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Charlotte Amalie, VI - St. Thomas Island Marine Weather Forecast

Station CHAV3 - 9751639 - Charlotte Amalie, VI

August 18, 2026 1:30 am ADT
Location: 18.335N 64.92W
Wind Direction: NE (40°)
Wind Speed: 8.9 knots
Wind Gust: 12.1 knots
Atmospheric Pressure: 30.00 in (1015.8 mb)
Air Temperature: 83.8°F (28.8°C)


Overnight - 81°F
Aug 18, 2026
16 mph ENE
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 81. East northeast wind around 16 mph.
Tuesday - 88°F
Aug 18, 2026
14 to 17 mph ENE
Scattered Rain Showers
Scattered rain showers. Mostly sunny, with a high near 88. East northeast wind 14 to 17 mph. Chance of precipitation is 30%.
Tuesday Night - 81°F
Aug 18, 2026
17 mph E
Chance Showers And Thunderstorms
Scattered rain showers before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 81. East wind around 17 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday - 88°F
Aug 19, 2026
12 to 16 mph SE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Southeast wind 12 to 16 mph. Chance of precipitation is 70%.
Wednesday Night - 81°F
Aug 19, 2026
14 to 22 mph ESE
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Mostly cloudy, with a low around 81. East southeast wind 14 to 22 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Thursday - 88°F
Aug 20, 2026
16 to 22 mph E
Sunny then Isolated Rain Showers
Isolated rain showers after noon. Sunny, with a high near 88. East wind 16 to 22 mph, with gusts as high as 28 mph.
Thursday Night - 81°F
Aug 20, 2026
20 mph E
Clear
Clear, with a low around 81. East wind around 20 mph, with gusts as high as 25 mph.
Friday - 88°F
Aug 21, 2026
17 to 21 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 88. East wind 17 to 21 mph, with gusts as high as 26 mph.
Friday Night - 81°F
Aug 21, 2026
21 mph E
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a low around 81. East wind around 21 mph. Chance of precipitation is 40%.
Saturday - 88°F
Aug 22, 2026
16 to 21 mph E
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 88.
Saturday Night - 81°F
Aug 22, 2026
16 to 21 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 81.
Sunday - 88°F
Aug 23, 2026
17 to 21 mph E
Scattered Rain Showers
Scattered rain showers. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Sunday Night - 82°F
Aug 23, 2026
21 mph E
Isolated Rain Showers
Isolated rain showers. Partly cloudy, with a low around 82.
Monday - 88°F
Aug 24, 2026
16 to 20 mph E
Isolated Rain Showers then Mostly Sunny
Isolated rain showers before noon. Mostly sunny, with a high near 88.

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