September Averages Sort by: Alphabetical Hottest Most Popular View by: °C °F
September temperatures in St. Thomas still get quite high and summer-like. Therefore, the beautiful beaches of Lindquist Beach, Sapphire Beach, Honeymoon Beach, Magens Bay and many more, are all frequented regularly even this late in the season.
Scuba diving is at its peak in the summer and in autumn because underwater visibility is extremely high. Some places such as Pillsbury Bay can be explored year round, though. Divers can explore deep caves and old shipwrecks. In addition, nighttime dives can provide unique and breathtaking aquatic scenes as well.
For those who love to learn something new, even on vacation, some sail boat outfitters offer beginner sailing lessons. Island Sol and Fair Wind Sailing School are two companies who offer on-board, hands-on lessons. Island Sol also has a junior program for 7- to 14-year-olds.
September visitors should definitely pay a visit to the Coral World Ocean Park, which will have shortened hours this month due to the season. Eager visitors should call ahead to check their open hours.
Families will enjoy a visit to Blackbeard’s Castle. This could be the advantage of taking a self-guided walking tour. You can spend as much time at each venue as you’d like.
September would be a good time to visit one of the island’s four golf courses, including the difficult but beautiful Mahogany Run.
The average temperature is still high, despite it being later in the season.
The average low temperature is 77°F (25°C).
The average high temperature is 90°F (32°C).
The average sea temperature is extremely warm at the season-high 83°F (28.3°C).
There is an average of 5.34″ of precipitation during September.
There is an average of 11 days of precipitation per month.
There is an average of 9 hours of sunlight on any given day.