Water Temperature of San Juan Bay in San Juan, PR

Current Water Temperature

81.1°F

Measurement Time: Thursday, March 12, 2026, 4:48 PM AST

Today's Tides

 High: March 12, 4:11 AM, 1.2 ft
Low: March 12, 10:58 AM, 0.5 ft
 High: March 12, 2:36 PM, 0.7 ft
Low: March 12, 9:16 PM, 0.0 ft

Temperature Locations

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Local Points of Interest

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

San Juan Bay

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

Elevation Above Sea Level: 3 feet

Sensor Depth: -4 feet

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

78.4°F
Partly Cloudy
Partly Cloudy
82.2°F
82.2°F
75%
ENE 15.7 mph
20.8 mph
78.4°F
70°F
0 in
38%
5 mi
1014 mbar
2.8

Five Day Weather Forecast

Moderate rain
Thu
H: 80°F
L: 75°F
Patchy rain nearby
Fri
H: 84°F
L: 74°F
Moderate rain
Sat
H: 79°F
L: 75°F
Partly Cloudy
Sun
H: 83°F
L: 74°F
Patchy rain nearby
Mon
H: 81°F
L: 73°F

Air Quality

AQI: 1 - Good
PM2.5: 3.15 μg/m3
PM10: 4.15 μg/m3
Carbon Monoxide: 118.85 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:34 AM
Sunset: 6:34 PM
Daylight: 11 hrs 59 mins
Moonrise: 1:51 AM
Moon Transit: 7:20 AM
Moonset: 12:51 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
12:00 AM - 12:00 AM

Minor Periods

12:21 AM - 1:51 PM
1:21 AM - 2:51 AM

Action Rating: 3 out of 5

Flood Advisory issued March 12 at 2:15PM AST until March 12 at 5:15PM AST by NWS San Juan PR

Effective: Thu March 12, 2026, 2:15 PM
Expires: Thu March 12, 2026, 5:15 PM

* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...Bayamon, Guaynabo, San Juan, Toa Alta, Toa Baja and Trujillo Alto. * WHEN...Until 515 PM AST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 214 PM AST, Doppler radar indicated heavy rain. This will cause urban and small stream flooding. Up to 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 3 inches are expected over the area. This additional rain will result in minor flooding. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Thursday, March 12, 2026

Weather Forecast

Moderate rain
79.9°F
74.5°F
77.1°F
79%
0.46 in
82%
0%
15.7 mph
2.5


Air Quality

AQI: 1 - Good
PM2.5: 3.78 μg/m3
PM10: 5.4 μg/m3
Carbon Monoxide: 118.65 μg/m3
Nitrogen Dioxide: 1.49 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 71.28 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:34 AM
Sunset: 6:34 PM
Daylight: 11 hrs 59 mins
Moonrise: 1:51 AM
Moon Transit: 7:20 AM
Moonset: 12:51 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
12:00 AM - 12:00 AM

Minor Periods

12:21 AM - 1:51 PM
1:21 AM - 2:51 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Patchy rain nearby
83.8°F
73.6°F
78.1°F
81%
0.01 in
84%
0%
16.1 mph
2.6


Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 4.41 μg/m3
Carbon Monoxide: 119.49 μg/m3
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 81.04 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:00 AM
Sunset: 6:34 PM
Daylight: 12 hrs mins
Moonrise: 2:41 AM
Moon Transit: 8:12 AM
Moonset: 1:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

7:42 AM - 10:12 AM
12:00 AM - 12:00 AM

Minor Periods

1:15 PM - 2:45 PM
2:11 AM - 3:41 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Moderate rain
79.2°F
75.4°F
77.1°F
80%
0.26 in
82%
0%
16.8 mph
2.8


Air Quality

AQI: 1 - Good
PM2.5: 4.78 μg/m3
PM10: 7.04 μg/m3
Carbon Monoxide: 120.13 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 82.76 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:00 AM
Sunset: 6:34 PM
Daylight: 12 hrs 1 mins
Moonrise: 3:27 AM
Moon Transit: 9:02 AM
Moonset: 2:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
12:00 AM - 12:00 AM

Minor Periods

2:11 PM - 3:41 PM
2:57 AM - 4:27 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Partly Cloudy
82.8°F
74.3°F
78.1°F
81%
0 in
0%
0%
18.6 mph
2.7


Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 6.83 μg/m3
Carbon Monoxide: 112.56 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 71.8 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:00 AM
Sunset: 6:35 PM
Daylight: 12 hrs 2 mins
Moonrise: 4:10 AM
Moon Transit: 9:51 AM
Moonset: 3:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:21 AM - 11:51 AM

Minor Periods

3:07 PM - 4:37 PM
3:40 AM - 5:10 AM

Action Rating: 2 out of 5

Monday, March 16, 2026

Weather Forecast

Patchy rain nearby
81.1°F
73.2°F
76.5°F
75%
0.06 in
89%
0%
19.7 mph
2.7


Air Quality

AQI: 1 - Good
PM2.5: 5.94 μg/m3
PM10: 8.77 μg/m3
Carbon Monoxide: 118.59 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 81.23 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:00 AM
Sunset: 6:35 PM
Daylight: 12 hrs 3 mins
Moonrise: 4:51 AM
Moon Transit: 10:39 AM
Moonset: 4:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

1:03 AM - 3:33 AM
10:09 AM - 12:39 AM

Minor Periods

4:03 PM - 5:33 PM
4:21 AM - 5:51 AM

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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