Water Temperature of the Caribbean Sea in St. John, VI

Current Water Temperature

82.6°F

Measurement Time: Monday, June 1, 2026, 2:00 PM AST

Temperature Locations

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Caribbean Sea

Station Name: South of St. John, VI
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
St. John, VI 00830

GPS Coordinates: 18.249, -64.763

Nearby Water Temperatures

Lameshur Bay, Coral Harbour (St. John), VI (5.4 mi)
Long Bay, Charlotte Amalie (St. Thomas), VI (11.9 mi)
Christiansted Harbor, Christiansted (St. Croix), VI (34.9 mi)
Bahía de Sardinas, Culebra, PR (35.6 mi)
Limetree Bay, St. Croix, VI (38.3 mi)
Atlantic Ocean, Vieques, PR (46 mi)
Caribbean Sea, Esperanza, PR (47.7 mi)
Atlantic Ocean, San Juan, PR (89 mi)
Unnamed Creek, Fort Buchanan, PR (89.5 mi)
Unnamed Creek, Fort Buchanan, PR (89.5 mi)
San Juan Bay, San Juan, PR (89.9 mi)
Las Casas Lake, Fort Buchanan, PR (90 mi)
Caribbean Sea, La Parguera, PR (151.2 mi)
Bahía de Mayagüez, Mayagüez, PR (157.5 mi)
Bahía de Aguadilla, Aguadilla, PR (158.1 mi)

Weather for St. John, US Virgin Islands

Current Weather

86.5°F
Partly cloudy
Partly cloudy
97.9°F
87.2°F
66%
ESE 17.7 mph
24.3 mph
81.7°F
72.5°F
0 in
75%
9 mi
1017 mbar
1.2

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 82°F
L: 81°F
Patchy rain nearby
Mon
H: 81°F
L: 80°F
Patchy rain nearby
Tue
H: 80°F
L: 80°F
Patchy rain nearby
Wed
H: 81°F
L: 79°F
Patchy rain nearby
Thu
H: 82°F
L: 80°F

Air Quality

AQI: 1 - Good
PM2.5: 10.6 μg/m3
PM10: 20.6 μg/m3
Carbon Monoxide: 99 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins
Moonrise: 12:46 AM
Moon Transit: 5:41 AM
Moonset: 11:40 AM
Moon Phase: Last Quarter
Moon Illumination: 42.6%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
9:01 PM - 11:31 PM

Minor Periods

11:10 AM - 12:40 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Heat Advisory issued June 7 at 9:50AM AST until June 7 at 5:00PM AST by NWS San Juan PR

Effective: Sun June 7, 2026, 9:50 AM
Expires: Sun June 7, 2026, 5:00 PM

* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...Portions of Puerto Rico and Virgin Islands. * WHEN...Until 5 PM AST this afternoon. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Cloudiness associated with the weak tropical wave will continue to diminish, leaving enough moisture to enhance warm-to-hot heat indices across the across most urban and coastal locations in PR and the USVI this afternoon. Thus, the Heat Advisory remains in effect.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


Sunday, June 7, 2026

Weather Forecast

Patchy rain nearby
81.9°F
81°F
81.4°F
74%
0.02 in
73%
0%
21.5 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 15.01 μg/m3
PM10: 35.83 μg/m3
Carbon Monoxide: 100.13 μg/m3
Nitrogen Dioxide: 0.41 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 48.17 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins
Moonrise: 12:46 AM
Moon Transit: 5:41 AM
Moonset: 11:40 AM
Moon Phase: Last Quarter
Moon Illumination: 42.6%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
9:01 PM - 11:31 PM

Minor Periods

11:10 AM - 12:40 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, June 8, 2026

Weather Forecast

Patchy rain nearby
81.3°F
79.9°F
80.8°F
76%
0.03 in
73%
0%
22.1 mph
11.2


Air Quality

AQI: 1 - Good
PM2.5: 9.31 μg/m3
PM10: 16.18 μg/m3
Carbon Monoxide: 97.33 μg/m3
Nitrogen Dioxide: 0.35 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 48.17 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins
Moonrise: 12:22 AM
Moon Transit: 6:24 AM
Moonset: 12:33 AM
Moon Phase: Last Quarter
Moon Illumination: 31.6%

Best Times for Fishing or Hunting

Major Periods

5:54 AM - 8:24 AM
12:00 AM - 12:00 AM

Minor Periods

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

Action Rating: 3 out of 5

Tuesday, June 9, 2026

Weather Forecast

Patchy rain nearby
80.4°F
79.6°F
80°F
75%
0.05 in
73%
0%
17.2 mph
11.5


Air Quality

AQI: 1 - Good
PM2.5: 9.68 μg/m3
PM10: 16.42 μg/m3
Carbon Monoxide: 97.21 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 59.21 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 12 mins
Moonrise: 12:57 AM
Moon Transit: 6:27 AM
Moonset: 1:26 PM
Moon Phase: Last Quarter
Moon Illumination: 21.6%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
5:57 AM - 8:27 AM

Minor Periods

12:56 AM - 2:26 PM
12:27 AM - 1:57 AM

Action Rating: 4 out of 5

Wednesday, June 10, 2026

Weather Forecast

Patchy rain nearby
80.6°F
79.4°F
80.1°F
76%
0.05 in
73%
0%
16.3 mph
12.2


Air Quality

AQI: 1 - Good
PM2.5: 9.89 μg/m3
PM10: 16.55 μg/m3
Carbon Monoxide: 96.38 μg/m3
Nitrogen Dioxide: 0.37 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 63.67 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 13 mins
Moonrise: 1:34 AM
Moon Transit: 12:00 AM
Moonset: 2:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

1:52 PM - 3:22 PM
1:04 AM - 2:34 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Patchy rain nearby
82°F
80°F
81.1°F
74%
0.02 in
73%
0%
17.7 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 10.16 μg/m3
PM10: 21.21 μg/m3
Carbon Monoxide: 96.11 μg/m3
Nitrogen Dioxide: 0.43 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 51.44 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 13 mins
Moonrise: 2:14 AM
Moon Transit: 8:45 AM
Moonset: 3:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

8:15 AM - 10:45 AM
12:00 AM - 12:00 AM

Minor Periods

2:52 PM - 4:22 PM
1:44 AM - 3:14 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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