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
3.9ft 1.2 m
Moderate Chop Noticeable waves and spray. Small craft exercise standard caution.
Wave Period 5.1s
Wave Direction 133° SE
Swell Waves
2.0 ft
5s • 168° SSE
Wind Waves / Chop
2.8 ft
3.7s • 137° SE
Ocean Current
0.4 mph
0.4 kn • 346° NNW
Sea Surface Temp
85.1°F
Equivalent: 29.5°C

High & Low Tide Forecast

Rising (Flood)
Next Tide: High 9:00 AM (+1.7 ft)
Thu, Nov 12 12 AM 6 AM 12 PM 6 PM 12 AM 6 AM Fri, Nov 13 Sat, Nov 14 ▼ Low 9:00 PM +0.8 ft ▲ High 9:00 AM +1.7 ft ▼ Low 8:00 PM +0.9 ft NOW
Low Tide Thu, Nov 12
9:00 PM
+0.8 ft (0.25 m)
High Tide Fri, Nov 13
9:00 AM
+1.7 ft (0.53 m)
Low Tide Fri, Nov 13
8:00 PM
+0.9 ft (0.27 m)
High Tide Sat, Nov 14
9:00 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 13
4.7 ft
5.4s • SE
Sat
Nov 14
5.1 ft
5.7s • SE
Sun
Nov 15
3.9 ft
5.8s • SE
Mon
Nov 16
2.8 ft
5.8s • ESE
Tue
Nov 17
3.5 ft
5.3s • E

Weather for St. John, US Virgin Islands

Current Weather

84°F
Mainly Sunny
Conditions: Mainly Sunny
Humidity: 76%
Feels Like: 87.3°F
Wind: SE 18.7 mph
Wind Gusts: 25 mph
Pressure: 29.95 in
Precipitation: 0 in
Cloud Cover: 36%
Visibility: 27.3 mi
UV Index: 0.4

Five-Day Weather Forecast

Light Drizzle
Fri
H: 86°F
L: 84°F
Light Drizzle
Sat
H: 85°F
L: 84°F
Light Drizzle
Sun
H: 84°F
L: 83°F
Moderate Drizzle
Mon
H: 83°F
L: 81°F
Light Drizzle
Tue
H: 84°F
L: 80°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
16.6 μg/m³
Moderate
PM10
27.5 μg/m³
Good
Ozone (O3)
47 μg/m³
Photochemical
NO2
0.8 μg/m³
Nitrogen Dioxide
SO2
2.9 μg/m³
Sulfur Dioxide
CO
124 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 18m daylight
Sunrise 6:24 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
Waxing Crescent • 13%
Moonrise 10:06 AM
Transit 3:38 PM
Moonset 9:12 PM

Best Times for Fishing or Hunting

Major Periods

2:43 AM - 5:13 AM
3:08 PM - 5:38 PM

Minor Periods

9:36 AM - 11:06 AM
8:42 PM - 10:12 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 84.6°F
Average Humidity: 76%
Chance of Rain: 33%
Wind: 20.5 mph
UV Index: 7

Air Quality

EPA Index 2 • Moderate
PM2.5
11.9 μg/m³
Good
PM10
19.6 μg/m³
Good
Ozone (O3)
51 μg/m³
Photochemical
NO2
0.6 μg/m³
Nitrogen Dioxide
SO2
1.9 μg/m³
Sulfur Dioxide
CO
118 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 18m daylight
Sunrise 6:24 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
Waxing Crescent • 13%
Moonrise 10:06 AM
Transit 3:38 PM
Moonset 9:12 PM

Best Times for Fishing or Hunting

Major Periods

2:43 AM - 5:13 AM
3:08 PM - 5:38 PM

Minor Periods

9:36 AM - 11:06 AM
8:42 PM - 10:12 PM
Action Rating:
Good Action 3/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 84°F
Average Humidity: 78%
Chance of Rain: 47%
Wind: 21.3 mph
UV Index: 6.7

Air Quality

EPA Index 2 • Moderate
PM2.5
13.6 μg/m³
Moderate
PM10
20.7 μg/m³
Good
Ozone (O3)
53 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
1.3 μg/m³
Sulfur Dioxide
CO
111.4 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 17m daylight
Sunrise 6:25 AM
Solar Noon 12:03 PM
Sunset 5:42 PM
Moon
Waxing Crescent • 21%
Moonrise 10:52 AM
Transit 4:27 PM
Moonset 10:05 PM

Best Times for Fishing or Hunting

Major Periods

3:33 AM - 6:03 AM
3:57 PM - 6:27 PM

Minor Periods

10:22 AM - 11:52 AM
9:35 PM - 11:05 PM
Action Rating:
Good Action 3/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 83.5°F
Average Humidity: 73%
Chance of Rain: 10%
Wind: 15.5 mph
UV Index: 6.9

Air Quality

EPA Index 2 • Moderate
PM2.5
15.6 μg/m³
Moderate
PM10
23.8 μg/m³
Good
Ozone (O3)
59.1 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
2.5 μg/m³
Sulfur Dioxide
CO
106.9 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: Moderate Drizzle
Average Temperature: 82.6°F
Average Humidity: 78%
Chance of Rain: 35%
Wind: 16.1 mph
UV Index: 7

Air Quality

EPA Index 2 • Moderate
PM2.5
6.7 μg/m³
Good
PM10
10.6 μg/m³
Good
Ozone (O3)
43.6 μg/m³
Photochemical
NO2
0.5 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
103.4 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: Light Drizzle
Average Temperature: 83.1°F
Average Humidity: 76%
Chance of Rain: 55%
Wind: 17.1 mph
UV Index: 6.9

Air Quality

EPA Index 1 • Good
PM2.5
5.7 μg/m³
Good
PM10
9.5 μg/m³
Good
Ozone (O3)
46.7 μg/m³
Photochemical
NO2
0.4 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
100 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
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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