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

84.9°F

Conditions: Partly cloudy

Feels Like: 95.8°F

Heat Index: 87.8°F

Humidity: 75%

Wind: ESE 17.2 mph

Wind Gusts: 23.4 mph

Wind Chill: 81.4°F

Dew Point: 74.2°F

Precipitation: 0 in

Cloud Cover: 75%

Visibility: 9 mi

Air Pressure: 1015 mbar

UV Index: 1.3

Five Day Weather Forecast

Sat
H: 82°F
L: 80°F

Sun
H: 82°F
L: 81°F

Mon
H: 81°F
L: 80°F

Tue
H: 81°F
L: 80°F

Wed
H: 81°F
L: 79°F

Air Quality

AQI: 1 - Good

PM2.5: 6.5 μg/m3

PM10: 12.7 μg/m3

Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 53 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:17 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins

Moonrise: 12:10 AM
Moon Transit: 4:58 AM
Moonset: 10:49 AM
Moon Phase: Last Quarter
Moon Illumination: 53.9%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
8:17 PM - 10:47 PM

Minor Periods

10:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Heat Advisory issued June 6 at 9:25AM AST until June 6 at 5:00PM AST by NWS San Juan PR

Effective: Sat June 6, 2026, 9:25 AM
Expires: Sat June 6, 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.

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. Take action when you see symptoms of heat exhaustion and heat stroke.

Saturday, June 6, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 81.5°F

Low Temperature: 80.2°F

Average Temperature: 80.9°F

Average Humidity: 80%

Precipitation: 0.03 in

Chance of Rain: 73%

Chance of Snow: 0%

Maximum Wind: 19 mph

UV Index: 11.7

Air Quality

AQI: 1 - Good

PM2.5: 7.86 μg/m3

PM10: 16.66 μg/m3

Carbon Monoxide: 103.83 μg/m3
Nitrogen Dioxide: 0.49 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 48.88 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:17 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins

Moonrise: 12:10 AM
Moon Transit: 4:58 AM
Moonset: 10:49 AM
Moon Phase: Last Quarter
Moon Illumination: 53.9%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
8:17 PM - 10:47 PM

Minor Periods

10:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, June 7, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 81.8°F

Low Temperature: 81°F

Average Temperature: 81.4°F

Average Humidity: 74%

Precipitation: 0.02 in

Chance of Rain: 73%

Chance of Snow: 0%

Maximum Wind: 21 mph

UV Index: 11

Air Quality

AQI: 1 - Good

PM2.5: 14.07 μg/m3

PM10: 34.25 μg/m3

Carbon Monoxide: 99.92 μg/m3
Nitrogen Dioxide: 0.42 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 47.5 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

Conditions: Patchy rain nearby

High Temperature: 81.1°F

Low Temperature: 80.3°F

Average Temperature: 80.8°F

Average Humidity: 77%

Precipitation: 0.06 in

Chance of Rain: 73%

Chance of Snow: 0%

Maximum Wind: 21.7 mph

UV Index: 11.2

Air Quality

AQI: 1 - Good

PM2.5: 9.37 μg/m3

PM10: 16.34 μg/m3

Carbon Monoxide: 97.46 μg/m3
Nitrogen Dioxide: 0.37 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 47.04 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

Conditions: Patchy rain nearby

High Temperature: 80.6°F

Low Temperature: 79.7°F

Average Temperature: 80.1°F

Average Humidity: 73%

Precipitation: 0.01 in

Chance of Rain: 73%

Chance of Snow: 0%

Maximum Wind: 17.9 mph

UV Index: 11.2

Air Quality

AQI: 1 - Good

PM2.5: 10.1 μg/m3

PM10: 17.18 μg/m3

Carbon Monoxide: 96.61 μg/m3
Nitrogen Dioxide: 0.41 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 54.58 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

Conditions: Patchy rain nearby

High Temperature: 80.7°F

Low Temperature: 79.4°F

Average Temperature: 80.2°F

Average Humidity: 74%

Precipitation: 0.02 in

Chance of Rain: 73%

Chance of Snow: 0%

Maximum Wind: 17.4 mph

UV Index: 2.1

Air Quality

AQI: 1 - Good

PM2.5: 11.71 μg/m3

PM10: 19.36 μg/m3

Carbon Monoxide: 95.22 μg/m3
Nitrogen Dioxide: 0.34 μg/m3
Sulphur Dioxide: 0.27 μg/m3
Ozone: 54.78 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

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

Current Water Temperature

Temperature Locations

Nearby Water Temperatures

Weather for St. John, US Virgin Islands

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Heat Advisory issued June 6 at 9:25AM AST until June 6 at 5:00PM AST by NWS San Juan PR

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

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Minor Periods

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Astronomical

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Astronomical

Best Times for Fishing or Hunting

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Astronomical

Best Times for Fishing or Hunting

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Webcams Near St. John, VI

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