Water Temperature of San Juan Bay in San Juan, PR

Current Water Temperature

85.3°F

Measurement Time: Wednesday, July 22, 2026, 6:18 AM AST

Today's Tides

 High: July 22, 2:20 AM, 1.0 ft
Low: July 22, 8:51 AM, 0.0 ft
 High: July 22, 4:25 PM, 1.5 ft
Low: July 22, 10:55 PM, 0.7 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

76.5°F
Partly Cloudy
Partly Cloudy
66°F
80.8°F
87%
SE 5.8 mph
9.3 mph
76.5°F
72.4°F
0 in
39%
6 mi
1013 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 88°F
L: 77°F
Patchy rain nearby
Thu
H: 88°F
L: 77°F
Patchy rain nearby
Fri
H: 86°F
L: 77°F
Patchy rain nearby
Sat
H: 87°F
L: 78°F
Patchy rain nearby
Sun
H: 87°F
L: 78°F

Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 7.3 μg/m3
Carbon Monoxide: 102 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 41 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:31 AM
Sunset: 7:03 PM
Daylight: 13 hrs 4 mins
Moonrise: 1:33 PM
Moon Transit: 7:13 PM
Moonset: 12:12 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:37 AM - 12:07 AM
6:43 PM - 9:13 PM

Minor Periods

1:03 PM - 2:33 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Heat Advisory issued July 22 at 3:56AM AST until July 22 at 4:00PM AST by NWS San Juan PR

Effective: Wed July 22, 2026, 3:56 AM
Expires: Wed July 22, 2026, 4:00 PM

* WHAT...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. expected. * WHERE...Urban and lower elevations areas of Puerto Rico and the U.S. Virgin Islands. * WHEN...From 10 AM this morning to 4 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

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.
Wednesday, July 22, 2026

Weather Forecast

Patchy rain nearby
87.9°F
76.5°F
81.7°F
73%
0.05 in
57%
0%
16.8 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 6.18 μg/m3
PM10: 8.58 μg/m3
Carbon Monoxide: 107.54 μg/m3
Nitrogen Dioxide: 0.59 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 46.38 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:31 AM
Sunset: 7:03 PM
Daylight: 13 hrs 4 mins
Moonrise: 1:33 PM
Moon Transit: 7:13 PM
Moonset: 12:12 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:37 AM - 12:07 AM
6:43 PM - 9:13 PM

Minor Periods

1:03 PM - 2:33 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, July 23, 2026

Weather Forecast

Patchy rain nearby
88.1°F
76.7°F
81.6°F
71%
0.02 in
36%
0%
17.9 mph
11.3


Air Quality

AQI: 1 - Good
PM2.5: 6.91 μg/m3
PM10: 11.89 μg/m3
Carbon Monoxide: 96.96 μg/m3
Nitrogen Dioxide: 0.54 μg/m3
Sulphur Dioxide: 2.49 μg/m3
Ozone: 45.88 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:31 AM
Sunset: 7:03 PM
Daylight: 13 hrs 3 mins
Moonrise: 2:26 PM
Moon Transit: 8:01 PM
Moonset: 12:52 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:24 AM - 12:54 AM
7:31 PM - 10:01 PM

Minor Periods

1:56 PM - 3:26 PM
12:22 AM - 1:52 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Patchy rain nearby
86°F
77.2°F
81.6°F
74%
0.04 in
57%
0%
18.3 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 14.45 μg/m3
PM10: 40.11 μg/m3
Carbon Monoxide: 95.71 μg/m3
Nitrogen Dioxide: 0.51 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 41.13 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:31 AM
Sunset: 7:02 PM
Daylight: 13 hrs 3 mins
Moonrise: 3:19 PM
Moon Transit: 8:51 PM
Moonset: 1:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

11:13 AM - 1:43 PM
8:21 PM - 10:51 PM

Minor Periods

2:49 PM - 4:19 PM
1:05 AM - 2:35 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Patchy rain nearby
87.4°F
78.2°F
82.3°F
75%
0.05 in
57%
0%
18.8 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 8.98 μg/m3
PM10: 23.33 μg/m3
Carbon Monoxide: 95.69 μg/m3
Nitrogen Dioxide: 0.5 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 41.42 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:31 AM
Sunset: 7:02 PM
Daylight: 13 hrs 2 mins
Moonrise: 4:13 PM
Moon Transit: 9:42 PM
Moonset: 2:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

12:04 AM - 2:34 PM
9:12 PM - 11:42 PM

Minor Periods

3:43 PM - 5:13 PM
1:52 AM - 3:22 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Patchy rain nearby
87.4°F
78.4°F
82.2°F
74%
0.04 in
57%
0%
17.7 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 13.7 μg/m3
Carbon Monoxide: 104.67 μg/m3
Nitrogen Dioxide: 0.72 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 34.78 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 12:31 AM
Sunset: 7:02 PM
Daylight: 13 hrs 1 mins
Moonrise: 5:04 PM
Moon Transit: 10:33 PM
Moonset: 3:12 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

12:56 AM - 3:26 PM
12:00 AM - 12:00 AM

Minor Periods

4:34 PM - 6:04 PM
2:42 AM - 4:12 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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