St. John U.S. Virgin Islands offers beautiful scenery and a unique climate system. The islands of St. John have some very humid months and above-average humidity throughout the year. The least humid month is March, with a relative 63% humidity. The most humid month is November, with a relative humidity of 73%. St. John has a moderate amount of wind. The windiest month is July with an average wind speed of 11 miles per hour, a gentle breeze, up to maximum sustained winds, considered to be a moderate breeze. June and August are also windy but not as windy as July.

St. John U.S. Virgin Islands is considered to have three seasons, they are:

High Season

Mid-December to April is considered to be the high season on St. John Island, and it is the most desirable time to visit. It is sometimes known as tourist season because it is the busiest time that tourists visit the island. It is also the time when temperatures are comfortable and there is less of a likelihood of rainfall. If you are looking for a time when there is the lowest possibility for rain, March, February, and June have less than .1 inch or more rain. The daily temperature during this time averages around 76 degrees Fahrenheit with approximately 2 to 3 inches of rainfall a month.

Low Season

Mid-April to Mid-December is considered to be the low season on St. John Island. The weather is comfortable with a daily temperature average of around 83 degrees Fahrenheit with approximately 3 to 4 inches of rainfall a month, with November the wettest month. The hottest and most humid months on St. John Island are August, July, and September. In early August, which is typically the warmest month, temperatures are regularly around 90°Fahrenheit. Some visitors can find St. John rentals are less expensive during the low season and can find great places to stay at reasonable prices.

Hurricane Season

September is hurricane season for St. John Island. While some consider this time to be beautiful, most businesses close for the month. If you are thinking about traveling to St. John Island during this time, you may want to consider getting travel insurance for your trip. 

With very few exceptions, you will find that the overall weather forecast in the Caribbean is for warm sunny days with a tropical climate breeze. 


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