Water Temperature of San Juan Bay in San Juan, PR

Current Water Temperature

86.2°F

Measurement Time: Monday, August 25, 2025, 11:54 PM AST

Today's Tides

 Low: August 26, 4:56 AM, 0.39 ft
High: August 26, 11:11 AM, 1.47 ft
 Low: August 26, 5:23 PM, 0.49 ft
High: August 26, 11:12 PM, 1.31 ft

Temperature Locations

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Local Points of Interest

Bahia de San Juan; Old San Juan; Port of San Juan; Caribbean Sea

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San Juan Bay

Station Name: San Juan, La Puntilla, San Juan Bay
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 3 feet / 1 meters

Sensor Depth: -3.7 feet / -1.1 meters

Nearest Address:
La Puntilla
San Juan, PR 00901
San Juan County

GPS Coordinates: 18.459167, -66.116389

Nearby Water Temperatures

Atlantic Ocean, San Juan, PR (1.5 mi)
Unnamed Creek, Fort Buchanan, PR (2.7 mi)
Las Casas Lake, Fort Buchanan, PR (3.1 mi)
Unnamed Creek, Fort Buchanan, PR (3.6 mi)
Atlantic Ocean, Vieques, PR (44.9 mi)
Caribbean Sea, Esperanza, PR (49.3 mi)
Bahía de Sardinas, Culebra, PR (54.5 mi)
Bahía de Aguadilla, Aguadilla, PR (68.7 mi)
Caribbean Sea, La Parguera, PR (69.8 mi)
Bahía de Mayagüez, Mayagüez, PR (70.6 mi)
Long Bay, Charlotte Amalie (St. Thomas), VI (78.9 mi)
Caribbean Sea, St. John, VI (89.9 mi)
Lameshur Bay, Coral Harbour (St. John), VI (91.8 mi)
Limetree Bay, St. Croix, VI (103.9 mi)
Christiansted Harbor, Christiansted (St. Croix), VI (105.3 mi)

Weather for San Juan, Puerto Rico

Current Weather

82.8°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 79%
Feels Like: 93.3°F
Wind: E 12.1 mph
Wind Gusts: 18.2 mph
Pressure: 30.06 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Cloudy
Tue
H: 84°F
L: 80°F
Moderate rain
Wed
H: 88°F
L: 79°F
Sunny
Thu
H: 89°F
L: 80°F
Patchy rain nearby
Fri
H: 88°F
L: 79°F
Patchy rain nearby
Sat
H: 87°F
L: 78°F

Air Quality

PM2.5: 27.38 μg/m3
PM10: 58.09 μg/m3
Carbon Monoxide: 197.95 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 28 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:26 AM
Sunset: 6:44 PM
Daylight: 12 hrs 35 mins
Moonrise: 8:53 AM
Moon Transit: 2:53 PM
Moonset: 8:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

5:19 AM - 7:49 AM
2:23 PM - 4:53 PM

Minor Periods

8:20 PM - 9:50 PM
8:23 AM - 9:53 AM

Action Rating: 2 out of 5

High Surf Advisory issued August 25 at 4:48PM AST until August 26 at 6:00PM AST by NWS San Juan PR

Effective: Mon August 25, 2025, 4:48 PM
Expires: Tue August 26, 2025, 1:00 AM

* WHAT...Breaking waves between 10 to 15 feet, resulting in life- threatening rip currents, beach erosion, and minor coastal flooding. * WHERE...Beaches along the northern coast of Puerto Rico, from Aguadilla to Fajardo. The most vulnerable areas for high surf, beach erosion, and coastal flooding include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan. * WHEN...For the Coastal Flood Advisory, until 6 PM AST this evening. For the High Surf Advisory, until 6 AM AST Tuesday. For the High Rip Current Risk through late Tuesday night. * IMPACTS...For the Coastal Flood Advisory, shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. For the High Surf Advisory, high waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in localized beach/dune structure erosion and dangerous swimming conditions. For the High Rip Current Risk, rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. * ADDITIONAL DETAILS...Long-period northerly swells are forecast to peak today with seas building between 6 and 8 feet around 13-15 seconds. This will continue to produce large breaking waves and minor coastal flooding along the beaches from northwestern to northeastern Puerto Rico. The next high tides are expected as follows: In San Juan, 10:44 PM AST at 1.4 feet. In Fajardo, 10:29 PM AST at 1.4 feet. In Arecibo, 10:12 PM AST at 1.60 feet. In Aguadilla, 9:55 PM AST at 1.5 feet.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly. A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore.


Rip Current Statement issued August 25 at 4:48PM AST until August 27 at 6:00AM AST by NWS San Juan PR

Effective: Mon August 25, 2025, 4:48 PM
Expires: Tue August 26, 2025, 1:00 AM

* WHAT...Breaking waves between 10 to 15 feet, resulting in life- threatening rip currents, beach erosion, and minor coastal flooding. * WHERE...Beaches along the northern coast of Puerto Rico, from Aguadilla to Fajardo. The most vulnerable areas for high surf, beach erosion, and coastal flooding include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan. * WHEN...For the Coastal Flood Advisory, until 6 PM AST this evening. For the High Surf Advisory, until 6 AM AST Tuesday. For the High Rip Current Risk through late Tuesday night. * IMPACTS...For the Coastal Flood Advisory, shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. For the High Surf Advisory, high waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in localized beach/dune structure erosion and dangerous swimming conditions. For the High Rip Current Risk, rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. * ADDITIONAL DETAILS...Long-period northerly swells are forecast to peak today with seas building between 6 and 8 feet around 13-15 seconds. This will continue to produce large breaking waves and minor coastal flooding along the beaches from northwestern to northeastern Puerto Rico. The next high tides are expected as follows: In San Juan, 10:44 PM AST at 1.4 feet. In Fajardo, 10:29 PM AST at 1.4 feet. In Arecibo, 10:12 PM AST at 1.60 feet. In Aguadilla, 9:55 PM AST at 1.5 feet.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly. A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore.


High Surf Advisory issued August 25 at 4:48PM AST until August 26 at 6:00PM AST by NWS San Juan PR

Effective: Mon August 25, 2025, 4:48 PM
Expires: Tue August 26, 2025, 1:00 AM

* WHAT...Breaking waves between 10 to 15 feet, resulting in life- threatening rip currents, beach erosion, and minor coastal flooding. * WHERE...Beaches along the northern coast of Puerto Rico, from Aguadilla to Fajardo. The most vulnerable areas for high surf, beach erosion, and coastal flooding include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan. * WHEN...For the Coastal Flood Advisory, until 6 PM AST this evening. For the High Surf Advisory, until 6 AM AST Tuesday. For the High Rip Current Risk through late Tuesday night. * IMPACTS...For the Coastal Flood Advisory, shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. For the High Surf Advisory, high waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in localized beach/dune structure erosion and dangerous swimming conditions. For the High Rip Current Risk, rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. * ADDITIONAL DETAILS...Long-period northerly swells are forecast to peak today with seas building between 6 and 8 feet around 13-15 seconds. This will continue to produce large breaking waves and minor coastal flooding along the beaches from northwestern to northeastern Puerto Rico. The next high tides are expected as follows: In San Juan, 10:44 PM AST at 1.4 feet. In Fajardo, 10:29 PM AST at 1.4 feet. In Arecibo, 10:12 PM AST at 1.60 feet. In Aguadilla, 9:55 PM AST at 1.5 feet.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly. A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore.


Rip Current Statement issued August 25 at 4:48PM AST until August 27 at 6:00AM AST by NWS San Juan PR

Effective: Mon August 25, 2025, 4:48 PM
Expires: Tue August 26, 2025, 1:00 AM

* WHAT...Breaking waves between 10 to 15 feet, resulting in life- threatening rip currents, beach erosion, and minor coastal flooding. * WHERE...Beaches along the northern coast of Puerto Rico, from Aguadilla to Fajardo. The most vulnerable areas for high surf, beach erosion, and coastal flooding include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan. * WHEN...For the Coastal Flood Advisory, until 6 PM AST this evening. For the High Surf Advisory, until 6 AM AST Tuesday. For the High Rip Current Risk through late Tuesday night. * IMPACTS...For the Coastal Flood Advisory, shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. For the High Surf Advisory, high waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in localized beach/dune structure erosion and dangerous swimming conditions. For the High Rip Current Risk, rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. * ADDITIONAL DETAILS...Long-period northerly swells are forecast to peak today with seas building between 6 and 8 feet around 13-15 seconds. This will continue to produce large breaking waves and minor coastal flooding along the beaches from northwestern to northeastern Puerto Rico. The next high tides are expected as follows: In San Juan, 10:44 PM AST at 1.4 feet. In Fajardo, 10:29 PM AST at 1.4 feet. In Arecibo, 10:12 PM AST at 1.60 feet. In Aguadilla, 9:55 PM AST at 1.5 feet.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly. A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore.


High Surf Advisory issued August 25 at 4:48PM AST until August 26 at 6:00PM AST by NWS San Juan PR

Effective: Mon August 25, 2025, 4:48 PM
Expires: Tue August 26, 2025, 1:00 AM

* WHAT...Breaking waves between 10 to 15 feet, resulting in life- threatening rip currents, beach erosion, and minor coastal flooding. * WHERE...Beaches along the northern coast of Puerto Rico, from Aguadilla to Fajardo. The most vulnerable areas for high surf, beach erosion, and coastal flooding include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan. * WHEN...For the Coastal Flood Advisory, until 6 PM AST this evening. For the High Surf Advisory, until 6 AM AST Tuesday. For the High Rip Current Risk through late Tuesday night. * IMPACTS...For the Coastal Flood Advisory, shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. For the High Surf Advisory, high waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in localized beach/dune structure erosion and dangerous swimming conditions. For the High Rip Current Risk, rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety. * ADDITIONAL DETAILS...Long-period northerly swells are forecast to peak today with seas building between 6 and 8 feet around 13-15 seconds. This will continue to produce large breaking waves and minor coastal flooding along the beaches from northwestern to northeastern Puerto Rico. The next high tides are expected as follows: In San Juan, 10:44 PM AST at 1.4 feet. In Fajardo, 10:29 PM AST at 1.4 feet. In Arecibo, 10:12 PM AST at 1.60 feet. In Aguadilla, 9:55 PM AST at 1.5 feet.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly. A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore.


Tuesday, August 26, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 82.5°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 17 mph
UV Index: 2.7

Air Quality

AQI: 2 - Moderate
PM2.5: 22.26 μg/m3
PM10: 47.51 μg/m3
Carbon Monoxide: 196.91 μg/m3
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:26 AM
Sunset: 6:44 PM
Daylight: 12 hrs 35 mins
Moonrise: 8:53 AM
Moon Transit: 2:53 PM
Moonset: 8:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

5:19 AM - 7:49 AM
2:23 PM - 4:53 PM

Minor Periods

8:20 PM - 9:50 PM
8:23 AM - 9:53 AM

Action Rating: 2 out of 5

Wednesday, August 27, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 82.9°F
Average Humidity: 78%
Chance of Rain: 85%
Wind: 15.7 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 8.31 μg/m3
PM10: 15.79 μg/m3
Carbon Monoxide: 197.06 μg/m3
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 33.08 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:25 AM
Sunset: 6:43 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:42 AM
Moon Transit: 3:34 PM
Moonset: 9:24 PM
Moon Phase: Waxing Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

6:00 AM - 8:30 AM
3:04 PM - 5:34 PM

Minor Periods

8:54 PM - 10:24 PM
9:12 AM - 10:42 AM

Action Rating: 3 out of 5

Thursday, August 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 83.8°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 15.4 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 9.98 μg/m3
PM10: 13.76 μg/m3
Carbon Monoxide: 203.94 μg/m3
Nitrogen Dioxide: 1.12 μg/m3
Sulphur Dioxide: 4.48 μg/m3
Ozone: 40.88 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:25 AM
Sunset: 6:42 PM
Daylight: 12 hrs 33 mins
Moonrise: 10:32 AM
Moon Transit: 4:17 PM
Moonset: 10:00 PM
Moon Phase: Waxing Crescent
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

6:42 AM - 9:12 AM
3:47 PM - 6:17 PM

Minor Periods

9:30 PM - 11:00 PM
10:02 AM - 11:32 AM

Action Rating: 3 out of 5

Friday, August 29, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 82.5°F
Average Humidity: 74%
Chance of Rain: 89%
Wind: 17.4 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 14.4 μg/m3
PM10: 19.52 μg/m3
Carbon Monoxide: 210.76 μg/m3
Nitrogen Dioxide: 1.86 μg/m3
Sulphur Dioxide: 5.39 μg/m3
Ozone: 44.77 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 12:25 AM
Sunset: 6:41 PM
Daylight: 12 hrs 32 mins
Moonrise: 11:23 AM
Moon Transit: 5:02 PM
Moonset: 10:39 PM
Moon Phase: Waxing Crescent
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:26 AM - 9:56 AM
4:32 PM - 7:02 PM

Minor Periods

10:09 PM - 11:39 PM
10:53 AM - 12:23 AM

Action Rating: 3 out of 5

Saturday, August 30, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 81.1°F
Average Humidity: 76%
Chance of Rain: 81%
Wind: 17.2 mph
UV Index: 0.2

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 12:24 AM
Sunset: 6:40 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:16 AM
Moon Transit: 5:50 PM
Moonset: 11:22 PM
Moon Phase: First Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

8:13 AM - 10:43 AM
5:20 PM - 7:50 PM

Minor Periods

12:00 AM - 12:00 AM
11:46 AM - 1:16 PM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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