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

Current Water Temperature

81.3°F

Measurement Time: Tuesday, April 21, 2026, 3:00 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

80.6°F
Patchy rain nearby
Patchy rain nearby
86.4°F
85.2°F
84%
SE 8.5 mph
11.4 mph
79.9°F
73.1°F
0 in
0%
9 mi
1013 mbar
0

Five Day Weather Forecast

Moderate rain
Mon
H: 81°F
L: 80°F
Moderate rain
Tue
H: 80°F
L: 79°F
Moderate rain
Wed
H: 81°F
L: 79°F
Patchy rain nearby
Thu
H: 81°F
L: 80°F
Partly Cloudy
Fri
H: 81°F
L: 80°F

Air Quality

AQI: 1 - Good
PM2.5: 5.95 μg/m3
PM10: 7.85 μg/m3
Carbon Monoxide: 113.85 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 53 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:16 AM
Sunset: 6:40 PM
Daylight: 12 hrs 45 mins
Moonrise: 3:25 PM
Moon Transit: 9:37 PM
Moonset: 3:12 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

12:14 AM - 2:44 PM
9:07 PM - 11:37 PM

Minor Periods

2:55 PM - 4:25 PM
2:42 AM - 4:12 AM

Action Rating: 2 out of 5

Monday, April 27, 2026

Weather Forecast

Moderate rain
80.5°F
79.7°F
80°F
79%
0.22 in
88%
0%
12.8 mph
10.9


Air Quality

AQI: 1 - Good
PM2.5: 5.7 μg/m3
PM10: 7.71 μg/m3
Carbon Monoxide: 114.89 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 54.64 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:16 AM
Sunset: 6:40 PM
Daylight: 12 hrs 45 mins
Moonrise: 3:25 PM
Moon Transit: 9:37 PM
Moonset: 3:12 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

12:14 AM - 2:44 PM
9:07 PM - 11:37 PM

Minor Periods

2:55 PM - 4:25 PM
2:42 AM - 4:12 AM

Action Rating: 2 out of 5

Tuesday, April 28, 2026

Weather Forecast

Moderate rain
80.2°F
78.9°F
79.5°F
78%
0.44 in
88%
0%
14.8 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 7.64 μg/m3
PM10: 10.59 μg/m3
Carbon Monoxide: 113.25 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 51.88 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 12:16 AM
Sunset: 6:40 PM
Daylight: 12 hrs 46 mins
Moonrise: 4:16 PM
Moon Transit: 10:19 PM
Moonset: 3:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:46 PM - 5:16 PM
3:16 AM - 4:46 AM

Action Rating: 2 out of 5

Wednesday, April 29, 2026

Weather Forecast

Moderate rain
80.7°F
78.5°F
79.4°F
78%
0.23 in
89%
0%
14.1 mph
11.6


Air Quality

AQI: 1 - Good
PM2.5: 6.74 μg/m3
PM10: 9.58 μg/m3
Carbon Monoxide: 116.13 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 52.76 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 12:16 AM
Sunset: 6:40 PM
Daylight: 12 hrs 47 mins
Moonrise: 5:06 PM
Moon Transit: 11:01 PM
Moonset: 4:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

1:38 PM - 4:08 PM
12:00 AM - 12:00 AM

Minor Periods

4:36 PM - 6:06 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Thursday, April 30, 2026

Weather Forecast

Patchy rain nearby
80.8°F
79.5°F
80.3°F
75%
0.01 in
83%
0%
14.3 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 7.92 μg/m3
PM10: 10.75 μg/m3
Carbon Monoxide: 117.13 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 2.87 μg/m3
Ozone: 66.84 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 12:16 AM
Sunset: 6:40 PM
Daylight: 12 hrs 48 mins
Moonrise: 5:57 PM
Moon Transit: 11:45 PM
Moonset: 4:54 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

2:21 PM - 4:51 PM
12:00 AM - 12:00 AM

Minor Periods

5:27 PM - 6:57 PM
4:24 AM - 5:54 AM

Action Rating: 5 out of 5

Friday, May 1, 2026

Weather Forecast

Partly Cloudy
81.1°F
80°F
80.6°F
72%
0 in
0%
0%
14.3 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 8.57 μg/m3
PM10: 11 μg/m3
Carbon Monoxide: 113.85 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 3.73 μg/m3
Ozone: 66.62 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 12:16 AM
Sunset: 6:41 PM
Daylight: 12 hrs 49 mins
Moonrise: 6:49 PM
Moon Transit: 12:00 AM
Moonset: 5:30 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:06 PM - 5:36 PM

Minor Periods

6:19 PM - 7:49 PM
5:00 AM - 6:30 AM

Action Rating: 4 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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