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

Current Water Temperature

82.6°F 28.1°C
Warm Warm & Relaxing
82.6°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Water feels warm and inviting. Safe for extended immersion with virtually no thermal fatigue.

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)

Marine Weather for the Caribbean Sea in St. John, VI

Marine Weather

Coastal & Marine Conditions
Open-Meteo Marine
3.4ft 1.0 m
Moderate Chop Noticeable waves and spray. Small craft exercise standard caution.
Wave Period 5.6s
Wave Direction 133° SE
Swell Waves
3.1 ft
4.8s • 135° SE
Wind Waves / Chop
1.2 ft
2.5s • 141° SE
Ocean Current
0.3 mph
0.3 kn • 315° NW
Sea Surface Temp
85.1°F
Equivalent: 29.5°C

High & Low Tide Forecast

Rising (Flood)
Next Tide: Low 9:00 PM (+1.0 ft)
Sat, Nov 14 12 AM 6 AM 12 PM 6 PM 12 AM 6 AM Sun, Nov 15 Mon, Nov 16 ▼ Low 9:00 PM +1.0 ft ▲ High 10:00 AM +1.7 ft ▼ Low 9:00 PM +1.0 ft NOW
Low Tide Sat, Nov 14
9:00 PM
+1.0 ft (0.29 m)
High Tide Sun, Nov 15
10:00 AM
+1.7 ft (0.53 m)
Low Tide Sun, Nov 15
9:00 PM
+1.0 ft (0.32 m)
High Tide Mon, Nov 16
10:00 AM
+1.7 ft (0.53 m)
Open-Meteo Tidal Model (Mean Sea Level MSL datum) • Times in station local timezone.

5-Day Marine Wave Forecast

Today
Nov 15
3.9 ft
5.6s • SE
Mon
Nov 16
3.1 ft
5.7s • ESE
Tue
Nov 17
3.9 ft
5.1s • E
Wed
Nov 18
4.7 ft
5.6s • E
Thu
Nov 19
3.9 ft
5.6s • E

Weather for St. John, US Virgin Islands

Current Weather

84.2°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 71%
Feels Like: 89.6°F
Wind: SE 14.1 mph
Wind Gusts: 19 mph
Pressure: 30.07 in
Precipitation: 0 in
Cloud Cover: 69%
Visibility: 10.6 mi
UV Index: 5

Five-Day Weather Forecast

Overcast
Sun
H: 85°F
L: 83°F
Light Drizzle
Mon
H: 85°F
L: 82°F
Thunderstorm
Tue
H: 85°F
L: 80°F
Thunderstorm
Wed
H: 84°F
L: 78°F
Dense Drizzle
Thu
H: 84°F
L: 79°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
15.6 μg/m³
Moderate
PM10
24.7 μg/m³
Good
Ozone (O3)
57 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
4.2 μg/m³
Sulfur Dioxide
CO
109 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 16m daylight
Sunrise 6:26 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
Waxing Crescent • 31%
Moonrise 11:33 AM
Transit 5:13 PM
Moonset 10:57 PM

Best Times for Fishing or Hunting

Major Periods

4:20 AM - 6:50 AM
4:43 PM - 7:13 PM

Minor Periods

11:03 AM - 12:33 PM
10:27 PM - 11:57 PM
Action Rating:
Good Action 3/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 83.7°F
Average Humidity: 74%
Chance of Rain: 4%
Wind: 15 mph
UV Index: 5.1

Air Quality

EPA Index 2 • Moderate
PM2.5
15.2 μg/m³
Moderate
PM10
23.7 μg/m³
Good
Ozone (O3)
58.5 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
3.1 μg/m³
Sulfur Dioxide
CO
107.6 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 16m daylight
Sunrise 6:26 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
Waxing Crescent • 31%
Moonrise 11:33 AM
Transit 5:13 PM
Moonset 10:57 PM

Best Times for Fishing or Hunting

Major Periods

4:20 AM - 6:50 AM
4:43 PM - 7:13 PM

Minor Periods

11:03 AM - 12:33 PM
10:27 PM - 11:57 PM
Action Rating:
Good Action 3/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 83.5°F
Average Humidity: 73%
Chance of Rain: 47%
Wind: 15.6 mph
UV Index: 6.7

Air Quality

EPA Index 2 • Moderate
PM2.5
7.4 μg/m³
Good
PM10
12 μg/m³
Good
Ozone (O3)
43.7 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
101.9 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 15m daylight
Sunrise 6:26 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
First Quarter • 42%
Moonrise 12:12 PM
Transit 5:58 PM
Moonset 11:48 PM

Best Times for Fishing or Hunting

Major Periods

5:06 AM - 7:36 AM
5:28 PM - 7:58 PM

Minor Periods

11:42 AM - 1:12 PM
11:18 PM - 12:48 AM
Action Rating:
Good Action 3/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Thunderstorm
Average Temperature: 82.9°F
Average Humidity: 77%
Chance of Rain: 57%
Wind: 20.7 mph
UV Index: 6.9

Air Quality

EPA Index 1 • Good
PM2.5
5 μg/m³
Good
PM10
8.5 μg/m³
Good
Ozone (O3)
45.2 μg/m³
Photochemical
NO2
0.4 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
101.5 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 15m daylight
Sunrise 6:27 AM
Solar Noon 12:04 PM
Sunset 5:41 PM
Moon
First Quarter • 54%
Moonrise 12:48 PM
Transit 6:41 PM
Moonset 1:13 AM

Best Times for Fishing or Hunting

Major Periods

5:49 AM - 8:19 AM
6:11 PM - 8:41 PM

Minor Periods

12:43 AM - 2:13 AM
12:18 PM - 1:48 PM
Action Rating:
Good Action 3/5
Wednesday, November 18, 2026

Weather Forecast

Conditions: Thunderstorm
Average Temperature: 81.7°F
Average Humidity: 80%
Chance of Rain: 59%
Wind: 21 mph
UV Index: 6.8

Air Quality

EPA Index 1 • Good
PM2.5
4.8 μg/m³
Good
PM10
8.2 μg/m³
Good
Ozone (O3)
56.7 μg/m³
Photochemical
NO2
0.4 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
106.8 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 14m daylight
Sunrise 6:27 AM
Solar Noon 12:04 PM
Sunset 5:41 PM
Moon
First Quarter • 65%
Moonrise 1:22 PM
Transit 7:23 PM
Moonset 12:39 AM

Best Times for Fishing or Hunting

Major Periods

6:32 AM - 9:02 AM
6:53 PM - 9:23 PM

Minor Periods

12:09 AM - 1:39 AM
12:52 PM - 2:22 PM
Action Rating:
Good Action 3/5
Thursday, November 19, 2026

Weather Forecast

Conditions: Dense Drizzle
Average Temperature: 81.3°F
Average Humidity: 80%
Chance of Rain: 43%
Wind: 17.2 mph
UV Index: 6.9

Air Quality

EPA Index 1 • Good
PM2.5
7.6 μg/m³
Good
PM10
12.6 μg/m³
Good
Ozone (O3)
66.6 μg/m³
Photochemical
NO2
0.4 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
106.7 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 13m daylight
Sunrise 6:28 AM
Solar Noon 12:04 PM
Sunset 5:41 PM
Moon
Waxing Gibbous • 75%
Moonrise 1:57 PM
Transit 8:10 PM
Moonset 1:29 AM

Best Times for Fishing or Hunting

Major Periods

7:15 AM - 9:45 AM
7:40 PM - 10:10 PM

Minor Periods

12:59 AM - 2:29 AM
1:27 PM - 2:57 PM
Action Rating:
Fair Action 2/5
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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