Water Temperature of the Atlantic Ocean in San Juan, PR

Current Water Temperature

80.2°F

Measurement Time: Friday, March 20, 2026, 7:00 AM AST

Temperature Locations

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Local Points of Interest

Balneario del Escambrón; Peñon de San Jorge

Atlantic Ocean

Station Name: San Juan, PR
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
PR-25R
San Juan, PR 00901
San Juan County

GPS Coordinates: 18.474, -66.099

Nearby Water Temperatures

San Juan Bay, San Juan, PR (1.5 mi)
Unnamed Creek, Fort Buchanan, PR (3.9 mi)
Las Casas Lake, Fort Buchanan, PR (4.4 mi)
Unnamed Creek, Fort Buchanan, PR (4.8 mi)
Atlantic Ocean, Vieques, PR (44.2 mi)
Caribbean Sea, Esperanza, PR (48.8 mi)
Bahía de Sardinas, Culebra, PR (53.6 mi)
Bahía de Aguadilla, Aguadilla, PR (69.8 mi)
Caribbean Sea, La Parguera, PR (71.3 mi)
Bahía de Mayagüez, Mayagüez, PR (71.9 mi)
Long Bay, Charlotte Amalie (St. Thomas), VI (77.9 mi)
Caribbean Sea, St. John, VI (89 mi)
Lameshur Bay, Coral Harbour (St. John), VI (90.8 mi)
Limetree Bay, St. Croix, VI (103.5 mi)
Christiansted Harbor, Christiansted (St. Croix), VI (104.8 mi)

Weather for San Juan, Puerto Rico

Current Weather

88°F
Patchy rain nearby
Patchy rain nearby
95.7°F
96.1°F
61%
E 13.4 mph
15.4 mph
88°F
73.1°F
0 in
80%
6 mi
1016 mbar
9.9

Five Day Weather Forecast

Patchy rain nearby
Tue
H: 89°F
L: 78°F
Patchy rain nearby
Wed
H: 88°F
L: 79°F
Patchy rain nearby
Thu
H: 88°F
L: 80°F
Patchy rain nearby
Fri
H: 87°F
L: 79°F
Patchy rain nearby
Sat
H: 87°F
L: 77°F

Air Quality

AQI: 1 - Good
PM2.5: 7.2 μg/m3
PM10: 17.8 μg/m3
Carbon Monoxide: 90 μg/m3
Nitrogen Dioxide: 0.2 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 42 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:30 AM
Sunset: 7:01 PM
Daylight: 13 hrs mins
Moonrise: 6:36 PM
Moon Transit: 12:00 AM
Moonset: 4:59 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:36 PM - 5:06 PM

Minor Periods

6:06 PM - 7:36 PM
4:29 AM - 5:59 AM

Action Rating: 4 out of 5

Heat Advisory issued July 28 at 2:00AM AST until July 28 at 5:00PM AST by NWS San Juan PR

Effective: Tue July 28, 2026, 2:00 AM
Expires: Tue July 28, 2026, 11:30 AM

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. expected. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Tuesday, July 28, 2026

Weather Forecast

Patchy rain nearby
89.2°F
77.8°F
82.9°F
75%
0.02 in
40%
0%
18.3 mph
11.5


Air Quality

AQI: 1 - Good
PM2.5: 6.9 μg/m3
PM10: 16.14 μg/m3
Carbon Monoxide: 89.58 μg/m3
Nitrogen Dioxide: 0.52 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:30 AM
Sunset: 7:01 PM
Daylight: 13 hrs mins
Moonrise: 6:36 PM
Moon Transit: 12:00 AM
Moonset: 4:59 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:36 PM - 5:06 PM

Minor Periods

6:06 PM - 7:36 PM
4:29 AM - 5:59 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Patchy rain nearby
88.2°F
78.8°F
82.9°F
76%
0.02 in
38%
0%
17.9 mph
11.5


Air Quality

AQI: 1 - Good
PM2.5: 11.65 μg/m3
PM10: 26 μg/m3
Carbon Monoxide: 92.04 μg/m3
Nitrogen Dioxide: 0.45 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 40.71 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:30 AM
Sunset: 7:00 PM
Daylight: 12 hrs 59 mins
Moonrise: 7:16 PM
Moon Transit: 12:13 AM
Moonset: 5:53 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:24 PM - 5:54 PM

Minor Periods

6:46 PM - 8:16 PM
5:23 AM - 6:53 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Patchy rain nearby
87.6°F
80°F
82.7°F
73%
0.04 in
57%
0%
17.2 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 10.97 μg/m3
PM10: 26.02 μg/m3
Carbon Monoxide: 89.5 μg/m3
Nitrogen Dioxide: 0.41 μg/m3
Sulphur Dioxide: 0.29 μg/m3
Ozone: 43.71 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:30 AM
Sunset: 7:00 PM
Daylight: 12 hrs 58 mins
Moonrise: 7:54 PM
Moon Transit: 1:00 AM
Moonset: 6:47 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
4:09 PM - 6:39 PM

Minor Periods

7:24 PM - 8:54 PM
6:17 AM - 7:47 AM

Action Rating: 6 out of 5

Friday, July 31, 2026

Weather Forecast

Patchy rain nearby
87.2°F
78.6°F
82.2°F
71%
0.05 in
57%
0%
18.6 mph
11.5


Air Quality

AQI: 1 - Good
PM2.5: 12.12 μg/m3
PM10: 30.4 μg/m3
Carbon Monoxide: 90.83 μg/m3
Nitrogen Dioxide: 0.43 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 38.38 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:30 AM
Sunset: 7:00 PM
Daylight: 12 hrs 58 mins
Moonrise: 8:30 PM
Moon Transit: 1:44 AM
Moonset: 7:39 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:14 AM - 3:44 AM
4:53 PM - 7:23 PM

Minor Periods

8:00 PM - 9:30 PM
7:09 AM - 8:39 AM

Action Rating: 4 out of 5

Saturday, August 1, 2026

Weather Forecast

Patchy rain nearby
87.4°F
77.4°F
81.5°F
73%
0.06 in
57%
0%
18.3 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 4.44 μg/m3
PM10: 8.87 μg/m3
Carbon Monoxide: 123.67 μg/m3
Nitrogen Dioxide: 0.69 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 34 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:30 AM
Sunset: 6:59 PM
Daylight: 12 hrs 57 mins
Moonrise: 9:04 PM
Moon Transit: 2:27 AM
Moonset: 8:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

1:57 AM - 4:27 AM
12:00 AM - 12:00 AM

Minor Periods

8:34 PM - 10:04 PM
8:00 AM - 9:30 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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