Water Temperature of the Caribbean Sea in St. John, VI
Current Water Temperature
Measurement Time: Tuesday, February 3, 2026, 4:00 AM 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

Tue
H: 77°F
L: 76°F

Wed
H: 78°F
L: 76°F

Thu
H: 80°F
L: 78°F

Fri
H: 83°F
L: 77°F

Sat
H: 79°F
L: 77°F
Air Quality
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 95 μg/m3
Astronomical
Sun Transit: 12:32 AM
Sunset: 6:15 PM
Daylight: 11 hrs 23 mins
Moon Transit: 1:39 AM
Moonset: 8:05 AM
Moon Phase: Full
Moon Illumination: 96.3%
Best Times for Fishing or Hunting
Major Periods
1:09 AM - 3:39 AM5:01 PM - 7:31 PM
Minor Periods
7:36 PM - 9:06 PM7:35 AM - 9:05 AM
Action Rating: 3 out of 5
Coastal Flood Advisory issued February 3 at 10:18AM AST until February 4 at 6:00AM AST by NWS San Juan PR
Effective: Tue February 3, 2026, 10:18 AM
Expires: Tue February 3, 2026, 6:30 PM
* WHAT...For the Coastal Flood Advisory, moderate coastal flooding, particularly through this evening. For the High Surf Advisory, between 15 to 18 feet today. For the High Rip Current Risk, life- threatening rip currents. * WHERE....Beaches of western to northeastern Puerto Rico, Culebra, St. Thomas, and St. John. The most vulnerable areas for high surf and beach erosion include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan; and Barrio Espinal in Aguada. * WHEN...For the High Surf Advisory, through 6 AM AST Wednesday morning. For the Coastal Flood Advisory, through 6 AM AST Wednesday. For the High Rip Current Risk, through late Wednesday night. * IMPACTS...Rip currents that can sweep even the best swimmers away from shore into deeper water where it becomes difficult to return to safety. High waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in some beach erosion with only minor damage possible to dune structure. Shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. * The next high tides are expected as follows: In San Juan, 1.49 feet at 10:29 AM AST and 1.07 feet at 10:13 PM AST; in Carolina/Loiza, 1.36 feet at 10:33 AM AST and 0.97 feet at 10:36 PM AST; and 1.30 feet at 9:53 PM AST and 0.91 feet at 9:38 PM AST; in Mayaguez, 1.35 feet at 10:01 AM AST and 1.03 feet at 10:09 PM AST; in Botany Bay, St. Thomas, 1.32 feet at 10:16 AM AST and 1.03 feet at 10:18 PM AST.
A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. 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.
High Surf Advisory issued February 3 at 10:18AM AST until February 4 at 6:00AM AST by NWS San Juan PR
Effective: Tue February 3, 2026, 10:18 AM
Expires: Tue February 3, 2026, 6:30 PM
* WHAT...For the Coastal Flood Advisory, moderate coastal flooding, particularly through this evening. For the High Surf Advisory, between 15 to 18 feet today. For the High Rip Current Risk, life- threatening rip currents. * WHERE....Beaches of western to northeastern Puerto Rico, Culebra, St. Thomas, and St. John. The most vulnerable areas for high surf and beach erosion include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan; and Barrio Espinal in Aguada. * WHEN...For the High Surf Advisory, through 6 AM AST Wednesday morning. For the Coastal Flood Advisory, through 6 AM AST Wednesday. For the High Rip Current Risk, through late Wednesday night. * IMPACTS...Rip currents that can sweep even the best swimmers away from shore into deeper water where it becomes difficult to return to safety. High waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in some beach erosion with only minor damage possible to dune structure. Shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. * The next high tides are expected as follows: In San Juan, 1.49 feet at 10:29 AM AST and 1.07 feet at 10:13 PM AST; in Carolina/Loiza, 1.36 feet at 10:33 AM AST and 0.97 feet at 10:36 PM AST; and 1.30 feet at 9:53 PM AST and 0.91 feet at 9:38 PM AST; in Mayaguez, 1.35 feet at 10:01 AM AST and 1.03 feet at 10:09 PM AST; in Botany Bay, St. Thomas, 1.32 feet at 10:16 AM AST and 1.03 feet at 10:18 PM AST.
A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. 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 3 at 10:18AM AST until February 5 at 6:00AM AST by NWS San Juan PR
Effective: Tue February 3, 2026, 10:18 AM
Expires: Tue February 3, 2026, 6:30 PM
* WHAT...For the Coastal Flood Advisory, moderate coastal flooding, particularly through this evening. For the High Surf Advisory, between 15 to 18 feet today. For the High Rip Current Risk, life- threatening rip currents. * WHERE....Beaches of western to northeastern Puerto Rico, Culebra, St. Thomas, and St. John. The most vulnerable areas for high surf and beach erosion include Pinones along road 187, Parcelas Suarez, Villas del Mar, and Villa Cristiana in Loiza; Fortuna in Luquillo; Pueblo and Tamarindo in Aguadilla; Barrio Obrero, Pueblo and Jarealito in Arecibo; La Boca in Barceloneta; Machuca in Manati; Puerto Nuevo in Vega Baja; Ocean Park in San Juan; and Barrio Espinal in Aguada. * WHEN...For the High Surf Advisory, through 6 AM AST Wednesday morning. For the Coastal Flood Advisory, through 6 AM AST Wednesday. For the High Rip Current Risk, through late Wednesday night. * IMPACTS...Rip currents that can sweep even the best swimmers away from shore into deeper water where it becomes difficult to return to safety. High waves that can wash over jetties and sweep people and pets onto jagged rocks. Rough surf may also knock you down. Large breaking waves will result in some beach erosion with only minor damage possible to dune structure. Shallow flooding of vulnerable areas will result in a limited threat of property and structural damage near the waterfront and shoreline, with a higher threat near the time of high tide. Isolated road closures are possible. * The next high tides are expected as follows: In San Juan, 1.49 feet at 10:29 AM AST and 1.07 feet at 10:13 PM AST; in Carolina/Loiza, 1.36 feet at 10:33 AM AST and 0.97 feet at 10:36 PM AST; and 1.30 feet at 9:53 PM AST and 0.91 feet at 9:38 PM AST; in Mayaguez, 1.35 feet at 10:01 AM AST and 1.03 feet at 10:09 PM AST; in Botany Bay, St. Thomas, 1.32 feet at 10:16 AM AST and 1.03 feet at 10:18 PM AST.
A High Surf Advisory means that high surf will affect beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. 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 3 at 10:18AM AST until February 4 at 6:00PM AST by NWS San Juan PR
Effective: Tue February 3, 2026, 10:18 AM
Expires: Tue February 3, 2026, 6:30 PM
* WHAT...Life-threatening rip currents. * WHERE...Beaches of Vieques and St. Croix. * WHEN...From Tuesday morning through Wednesday 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.
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.43 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 91.04 μg/m3
Astronomical
Sun Transit: 12:32 AM
Sunset: 6:15 PM
Daylight: 11 hrs 23 mins
Moon Transit: 1:39 AM
Moonset: 8:05 AM
Moon Phase: Full
Moon Illumination: 96.3%
Best Times for Fishing or Hunting
Major Periods
1:09 AM - 3:39 AM5:01 PM - 7:31 PM
Minor Periods
7:36 PM - 9:06 PM7:35 AM - 9:05 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.28 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 90.72 μg/m3
Astronomical
Sun Transit: 12:32 AM
Sunset: 6:15 PM
Daylight: 11 hrs 24 mins
Moon Transit: 2:26 AM
Moonset: 8:42 AM
Moon Phase: Full
Moon Illumination: 90.9%
Best Times for Fishing or Hunting
Major Periods
1:56 AM - 4:26 AM5:46 PM - 8:16 PM
Minor Periods
8:29 PM - 9:59 PM8:12 AM - 9:42 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.36 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 78.8 μg/m3
Astronomical
Sun Transit: 12:33 AM
Sunset: 6:16 PM
Daylight: 11 hrs 25 mins
Moon Transit: 3:09 AM
Moonset: 9:16 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%
Best Times for Fishing or Hunting
Major Periods
2:39 AM - 5:09 AM6:28 PM - 8:58 PM
Minor Periods
9:20 PM - 10:50 PM8:46 AM - 10:16 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.54 μg/m3
Sulphur Dioxide: 3.49 μg/m3
Ozone: 65.52 μg/m3
Astronomical
Sun Transit: 12:33 AM
Sunset: 6:16 PM
Daylight: 11 hrs 25 mins
Moon Transit: 3:52 AM
Moonset: 9:50 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%
Best Times for Fishing or Hunting
Major Periods
3:22 AM - 5:52 AM7:11 PM - 9:41 PM
Minor Periods
10:11 PM - 11:41 PM9:20 AM - 10:50 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.92 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 66.69 μg/m3
Astronomical
Sun Transit: 12:33 AM
Sunset: 6:17 PM
Daylight: 11 hrs 26 mins
Moon Transit: 4:34 AM
Moonset: 10:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%
Best Times for Fishing or Hunting
Major Periods
4:04 AM - 6:34 AM7:53 PM - 10:23 PM
Minor Periods
12:00 AM - 12:00 AM9:55 AM - 11:25 AM
Action Rating: 3 out of 5
