Water Temperature of the Caribbean Sea in St. John, VI
Current Water Temperature
Measurement Time: Monday, June 1, 2026, 2:00 PM AST
Temperature Locations
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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

Five Day Weather Forecast

Mon
H: 81°F
L: 80°F

Tue
H: 80°F
L: 80°F

Wed
H: 80°F
L: 79°F

Thu
H: 81°F
L: 80°F

Fri
H: 82°F
L: 81°F
Air Quality
Nitrogen Dioxide: 0.3 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 52 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins
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 AM12:00 AM - 12:00 AM
Minor Periods
12:03 AM - 1:33 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Special Weather Statement issued June 8 at 2:15PM AST by NWS San Juan PR
Effective: Mon June 8, 2026, 2:15 PM
Expires: Mon June 8, 2026, 4:15 PM
According to PTWC an earthquake of magnitude 6.4 occurred at 2.8 NORTH, longitude 85.3 WEST near Cuba at 206 PM AST June 8, 2026 AST. Given the reported intensity of the earthquake it is believed there is no tsunami threat for Puerto Rico or the Virgin Islands. Continue to monitor your favorite news source for more information. Updated information will be issued by emergency officials and the Puerto Rico Seismic Network.
Heat Advisory issued June 8 at 9:24AM AST until June 8 at 5:00PM AST by NWS San Juan PR
Effective: Mon June 8, 2026, 9:24 AM
Expires: Mon June 8, 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. 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.
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.34 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 49.92 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 6:54 PM
Daylight: 13 hrs 12 mins
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 AM12:00 AM - 12:00 AM
Minor Periods
12:03 AM - 1:33 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.38 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 60.46 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 12 mins
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 AM5:57 AM - 8:27 AM
Minor Periods
12:56 AM - 2:26 PM12:27 AM - 1:57 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.41 μg/m3
Sulphur Dioxide: 0.66 μg/m3
Ozone: 62.83 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 13 mins
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 AM12:00 AM - 12:00 AM
Minor Periods
1:52 PM - 3:22 PM1:04 AM - 2:34 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.48 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 46.08 μg/m3
Astronomical
Sun Transit: 12:18 AM
Sunset: 6:55 PM
Daylight: 13 hrs 13 mins
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 AM12:00 AM - 12:00 AM
Minor Periods
2:52 PM - 4:22 PM1:44 AM - 3:14 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 40.11 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 6:56 PM
Daylight: 13 hrs 13 mins
Moon Transit: 9:41 AM
Moonset: 4:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%
Best Times for Fishing or Hunting
Major Periods
12:12 AM - 2:42 AM9:11 AM - 11:41 AM
Minor Periods
3:58 PM - 5:28 PM2:29 AM - 3:59 AM
Action Rating: 2 out of 5
