The sea in the U.S. Virgin Islands is warm enough to swim in all year round: the water temperature is around 26 °C (79 °F) from January to April and around 29 °C (84 °F) in September and October. Average Weather in Saint Croix U.S. Virgin Islands. The climate in Saint Croix is hot, oppressive, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 72°F to 88°F and is rarely below 68°F or above 90°F.
Annual average weather for St Thomas, US Virgin Islands. Nearby Hotel Deals. The hottest month in St Thomas is July when the average maximum temperature is 32°, average temperature is 29° and average minimum temperature is 26°. St. Thomas, U.S. Virgin Islands: Annual Weather Averages January is the hottest month in St. Thomas with an average temperature of 30 °F (-1 °C) and the coldest is January at 30 °F (-1 °C).
CLIMATE: AVERAGE MONTHLY WEATHER IN Saint John, US Virgin Islands. Most rainfall (rainy season) is seen in May, June, July, August, September, October, November and December. On average, the warmest month is August. On average, the coolest month is January. May is the wettest month. This month should be avoided if you don't like too much rain. February is the driest month. Climate & Weather Averages in Virgin Islands of the United States, US Virgin Islands. Feels Like: 95 °F Forecast: 81 / 86 °F Wind: 16 mph ↑ from East Location: Cyril E. King International Airport.
Climate & Weather Averages in Christiansted, US Virgin Islands. Feels Like: 83 °F Forecast: 79 / 86 °F Wind: 7 mph ↑ from Northeast Location: Christiansted / Henry E. Rohlsen Airport - Saint Croix. Average Weather in Charlotte Amalie U.S. Virgin Islands. The climate in Charlotte Amalie is hot, oppressive, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 73°F to 89°F and is rarely below 71°F or above 92°F.