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

Current Water Temperature

80.2°F

Measurement Time: Tuesday, February 17, 2026, 12:00 AM 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

77.7°F
Partly Cloudy
Partly Cloudy
81.4°F
81.4°F
74%
E 17.9 mph
23.8 mph
77.8°F
70°F
0 in
0%
9 mi
1016 mbar
0

Five Day Weather Forecast

Partly Cloudy
Wed
H: 79°F
L: 77°F
Heavy rain
Thu
H: 80°F
L: 77°F
Moderate rain
Fri
H: 79°F
L: 78°F
Patchy rain nearby
Sat
H: 79°F
L: 77°F
Patchy rain nearby
Sun
H: 80°F
L: 78°F

Air Quality

AQI: 1 - Good
PM2.5: 8.65 μg/m3
PM10: 13.05 μg/m3
Carbon Monoxide: 100.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:32 AM
Sunset: 6:24 PM
Daylight: 11 hrs 43 mins
Moonrise: 12:43 AM
Moon Transit: 7:40 PM
Moonset: 1:35 AM
Moon Phase: First Quarter
Moon Illumination: 62.3%

Best Times for Fishing or Hunting

Major Periods

10:09 AM - 12:39 AM
7:10 PM - 9:40 PM

Minor Periods

12:13 AM - 1:43 PM
1:05 AM - 2:35 AM

Action Rating: 2 out of 5

Rip Current Statement issued February 25 at 1:54AM AST until February 27 at 6:00PM AST by NWS San Juan PR

Effective: Wed February 25, 2026, 1:54 AM
Expires: Wed February 25, 2026, 1:00 PM

* WHAT...Life-threatening rip currents. * WHERE...Beaches of west-southwest Puerto Rico, and the north- facing beaches of Culebra, Vieques, St. Thomas, and St. John. * WHEN...Through Friday afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly.


Rip Current Statement issued February 25 at 1:54AM AST until February 27 at 6:00PM AST by NWS San Juan PR

Effective: Wed February 25, 2026, 1:54 AM
Expires: Wed February 25, 2026, 1:00 PM

* WHAT...Life-threatening rip currents. * WHERE...North-facing beaches of St. Croix. * WHEN...From Thursday morning through Friday afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water, where it becomes difficult to return to safety.

There is a high risk of rip currents. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. If you become caught in a rip current, yell for help. Remain calm, do not exhaust yourself and stay afloat while waiting for help. If you have to swim out of a rip current, swim parallel to shore and back toward the beach when possible. Do not attempt to swim directly against a rip current as you will tire quickly.


Wednesday, February 25, 2026

Weather Forecast

Partly Cloudy
79.2°F
77.2°F
78°F
79%
0 in
0%
0%
20.6 mph
2.5


Air Quality

AQI: 1 - Good
PM2.5: 10.13 μg/m3
PM10: 14.63 μg/m3
Carbon Monoxide: 103.37 μg/m3
Nitrogen Dioxide: 1.37 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 74.4 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:32 AM
Sunset: 6:24 PM
Daylight: 11 hrs 43 mins
Moonrise: 12:43 AM
Moon Transit: 7:40 PM
Moonset: 1:35 AM
Moon Phase: First Quarter
Moon Illumination: 62.3%

Best Times for Fishing or Hunting

Major Periods

10:09 AM - 12:39 AM
7:10 PM - 9:40 PM

Minor Periods

12:13 AM - 1:43 PM
1:05 AM - 2:35 AM

Action Rating: 2 out of 5

Thursday, February 26, 2026

Weather Forecast

Heavy rain
79.7°F
76.6°F
78.4°F
81%
1.83 in
89%
0%
22.6 mph
2.5


Air Quality

AQI: 1 - Good
PM2.5: 9.77 μg/m3
PM10: 14.59 μg/m3
Carbon Monoxide: 107.81 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 71.68 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:31 AM
Sunset: 6:24 PM
Daylight: 11 hrs 44 mins
Moonrise: 1:46 PM
Moon Transit: 8:43 PM
Moonset: 2:39 AM
Moon Phase: First Quarter
Moon Illumination: 72.9%

Best Times for Fishing or Hunting

Major Periods

11:12 AM - 1:42 PM
8:13 PM - 10:43 PM

Minor Periods

1:16 PM - 2:46 PM
2:09 AM - 3:39 AM

Action Rating: 2 out of 5

Friday, February 27, 2026

Weather Forecast

Moderate rain
79.2°F
77.9°F
78.4°F
82%
0.7 in
86%
0%
23.7 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 9.92 μg/m3
PM10: 14.69 μg/m3
Carbon Monoxide: 108.41 μg/m3
Nitrogen Dioxide: 1.31 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 72.72 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:31 AM
Sunset: 6:25 PM
Daylight: 11 hrs 45 mins
Moonrise: 2:52 PM
Moon Transit: 9:42 PM
Moonset: 3:37 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

12:13 AM - 2:43 PM
9:12 PM - 11:42 PM

Minor Periods

2:22 PM - 3:52 PM
3:07 AM - 4:37 AM

Action Rating: 2 out of 5

Saturday, February 28, 2026

Weather Forecast

Patchy rain nearby
79.4°F
77°F
78.8°F
74%
0.07 in
89%
0%
23.9 mph
2.3


Air Quality

AQI: 1 - Good
PM2.5: 10.16 μg/m3
PM10: 14.58 μg/m3
Carbon Monoxide: 105.2 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 76.24 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:31 AM
Sunset: 6:25 PM
Daylight: 11 hrs 46 mins
Moonrise: 3:55 PM
Moon Transit: 10:38 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

1:10 PM - 3:40 PM
12:00 AM - 12:00 AM

Minor Periods

3:25 PM - 4:55 PM
4:01 AM - 5:31 AM

Action Rating: 2 out of 5

Sunday, March 1, 2026

Weather Forecast

Patchy rain nearby
79.6°F
78.2°F
79°F
72%
0.08 in
89%
0%
23 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 13.25 μg/m3
PM10: 19.25 μg/m3
Carbon Monoxide: 97.33 μg/m3
Nitrogen Dioxide: 1.41 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 73.08 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:31 AM
Sunset: 6:25 PM
Daylight: 11 hrs 47 mins
Moonrise: 4:55 PM
Moon Transit: 11:29 PM
Moonset: 5:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

2:03 PM - 4:33 PM
12:00 AM - 12:00 AM

Minor Periods

4:25 PM - 5:55 PM
4:47 AM - 6:17 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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