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Climate - United States Virgin Islands

Temperature, rainfall, prevailing weather conditions, when to go, what to pack

See also the US version (°F - inches - feet)

Flag - United States Virgin Islands

Map - United States Virgin Islands

The climate of the U.S. Virgin Islands is tropical, hot and humid all year round, with a relatively cooler period from December to April, with highs around 28/29 °C, and a more sultry period from May to November, with average highs around 31/32 °C. However, the heat is always tempered by the breezes. The U.S. Virgin Islands are a group of islands located east of Puerto Rico.
Here are the average temperatures of Charlotte Amalie, the capital.
Charlotte Amalie average temperatures
Charlotte Amalie J F M A M J J A S O N D
Min (°C) 22 22 23 23 25 25 26 26 25 25 24 23
Max (°C) 29 30 30 30 31 32 32 32 32 32 31 30

With regard to the rainfall, there is a rainy season from May to December, with a relative decrease in precipitation in June and July. The least rainy months are February and March. The rainfall hovers around 1,000/1,200 millimetres per year, and is generally slightly more abundant in the northern slopes of each island.
In the northern islands (Saint John and Saint Thomas, where the capital Charlotte Amalie is located), the relatively dry season runs from December to April, even though in some years there have been heavy rains even in December, from 200 to 400 mm, while in the island of Saint Croix, located more to the south, it runs from January to April.
Starting from May, precipitation increases, though often in June and July there is a new relative decrease, followed by a recovery from August to November. Generally, the wettest period runs from September to November.
Here is the average precipitation.
Average precipitation Charlotte Amalie
Charlotte Amalie J F M A M J J A S O N D Year
Prec. (mm) 50 35 35 70 80 70 65 95 140 155 140 70 1005
Days 10 8 7 8 10 8 9 12 13 14 13 12 124

From June to November, the U.S. Virgin Islands, as happens in general in the Antilles, can be affected by tropical cyclones, called hurricanes in this region. If we exclude these phenomena, which can bring strong winds and torrential rains, normally the weather is nice, interrupted only by brief showers and thunderstorms, which are more likely and more intense during the rainy season: so, the sun shines throughout the year.

Charlotte Amalie

For swimming, the sea is warm all year round: the water temperature is 26 °C from January to April, and 29 °C in September and October.
Sea temperature Charlotte Amalie
Charlotte Amalie J F M A M J J A S O N D
Sea (°C) 26 26 26 26 27 28 28 28 29 29 28 27

When to go

The best time to visit the U.S. Virgin Islands goes from December to April, characterized by a moderate heat and outside of the hurricane period; in particular January, February and March are the driest months. December can still be rainy, especially in the southern island of Saint Croix. In April, there is a certain increase in the heat, and in some years even in the intensity of thunderstorms, but overall it's still an acceptable month, and in many cases also good. In summer, June and July are generally less rainy than August and September, but as we said from June to November there is the risk of tropical storms and hurricanes, however, most likely between August and October, when the sea is warmer and has more energy to provide.

What to pack

From December to April: light clothes, possibly a scarf for the breeze and a sweatshirt for the evening.
From May to November: lightweight clothing, possibly a light sweatshirt and a light raincoat for thunderstorms; sweatshirt and pashmina for airconditioned places.

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