Water Temperature of San Juan Bay in San Juan, PR
Current Water Temperature
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 SeaSponsored Content
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

Humidity: 79%
Feels Like: 93.3°F
Wind: E 12.1 mph
Wind Gusts: 18.2 mph
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Tue
H: 84°F
L: 80°F

Wed
H: 88°F
L: 79°F

Thu
H: 89°F
L: 80°F

Fri
H: 88°F
L: 79°F

Sat
H: 87°F
L: 78°F
Air Quality
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 28 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 6:44 PM
Daylight: 12 hrs 35 mins
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 AM2:23 PM - 4:53 PM
Minor Periods
8:20 PM - 9:50 PM8:23 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.
Weather Forecast
Average Temperature: 82.5°F
Average Humidity: 81%
Wind: 17 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 33 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 6:44 PM
Daylight: 12 hrs 35 mins
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 AM2:23 PM - 4:53 PM
Minor Periods
8:20 PM - 9:50 PM8:23 AM - 9:53 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 82.9°F
Average Humidity: 78%
Wind: 15.7 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 33.08 μg/m3
Astronomical
Sun Transit: 12:25 AM
Sunset: 6:43 PM
Daylight: 12 hrs 34 mins
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 AM3:04 PM - 5:34 PM
Minor Periods
8:54 PM - 10:24 PM9:12 AM - 10:42 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 83.8°F
Average Humidity: 75%
Wind: 15.4 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 1.12 μg/m3
Sulphur Dioxide: 4.48 μg/m3
Ozone: 40.88 μg/m3
Astronomical
Sun Transit: 12:25 AM
Sunset: 6:42 PM
Daylight: 12 hrs 33 mins
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 AM3:47 PM - 6:17 PM
Minor Periods
9:30 PM - 11:00 PM10:02 AM - 11:32 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 82.5°F
Average Humidity: 74%
Wind: 17.4 mph
UV Index: 2.9
Air Quality
Nitrogen Dioxide: 1.86 μg/m3
Sulphur Dioxide: 5.39 μg/m3
Ozone: 44.77 μg/m3
Astronomical
Sun Transit: 12:25 AM
Sunset: 6:41 PM
Daylight: 12 hrs 32 mins
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 AM4:32 PM - 7:02 PM
Minor Periods
10:09 PM - 11:39 PM10:53 AM - 12:23 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 81.1°F
Average Humidity: 76%
Wind: 17.2 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:24 AM
Sunset: 6:40 PM
Daylight: 12 hrs 31 mins
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 AM5:20 PM - 7:50 PM
Minor Periods
12:00 AM - 12:00 AM11:46 AM - 1:16 PM
Action Rating: 2 out of 5