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Climate & Weather Guide in Us Virgin Islands

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

The US Virgin Islands feature a uniform tropical monsoon climate (Am in Köppen classification), characterized by warm temperatures year-round, high humidity, and a distinct wet season from May to November. Daytime highs consistently range from 28-31°C, with minimal seasonal variation, making it ideal for beach living but challenging due to frequent rain and hurricane risks during summer-fall. Annual rainfall averages 900-1300mm, concentrated in the wet season, while trade winds provide some relief from the oppressive heat. Sunshine is abundant at about 2800 hours yearly, appealing to expats seeking perpetual summer conditions, though high UV and humidity require adaptation.

Summer Average

27-31°C

Winter Average

23-28°C

Climate Types

Tropical monsoon

Annual Rainfall

900-1300 mm

Sunshine Hours

2,700-2,900 hours annually

Average Humidity

75-85%

Regional Climate Variations

St. Thomas and St. John

These northern islands experience consistent tropical warmth with highs of 28-29°C year-round and lows rarely below 23°C. The dry season (December-April) brings pleasant trade winds and lower rainfall around 70mm monthly, ideal for outdoor activities, while the wet season sees heavier showers but still abundant sunshine at 7-8 hours daily. High humidity persists, moderated by breezes, with sea temperatures always above 26°C for swimming.

Summer:27-30°C
Winter:23-28°C
Moderate rainfall

Warm, breezy paradise with reliable sunshine and refreshing ocean swims, though humid and rainy afternoons are common in summer.

St. Croix

The larger southern island has slightly warmer averages, peaking at 27.2°C annually, with a rain shadow effect creating marginally drier conditions than the northern islands. Expect 28°C highs in both winter and summer, with 14 rainy days monthly in peak wet season but less intense downpours. Consistent winds keep it comfortable for residents, supporting year-round agriculture and water sports.

Summer:27-31°C
Winter:24-28°C
Moderate rainfall

Steady tropical warmth with gentle trade winds, fewer intense storms, and a laid-back island vibe perfect for long-term living.

The US Virgin Islands offer a stable tropical climate with minimal temperature swings, appealing to expats desiring endless summer weather. Minor variations exist between St. Croix's slightly drier south and the northern islands' lush conditions, but all share high humidity and hurricane-season rains. Ideal for beach lovers prepared for wetter months.