Normal weather for Saint Thomas in September
It's hot in September in Saint Thomas with an average temperature of 32°C. Temperatures this month range from a low of 32°C to a high of 32°C. At night, you can expect temperatures between 27°C and 28°C.
In September, there is an average of 69 mm of precipitation, spread over 10 days. The wind speed is around 5 Bft, mostly coming from the Southeast.
Saint Thomas in September |
New York | ||
|---|---|---|---|
 Average Temperature |
32°C | 27°C | |
 High Temp |
32°C | 31°C | |
| Low Temp |
32°C | 21°C | |
 Total Precipitation |
69 mm | 57 mm | |
| Rainy Days |
10 days | 9 days | |
Start of September
The month of September starts in Saint Thomas with hot temps, averaging around 32°C during the day and nights around 28°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps stay steady at around 32°C, with nights around 28°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of September
By the end of September, the average daytime temperature in Saint Thomas is around 32°C, while nighttime temps are about 28°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Find affordable vacations to Saint Thomas 
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Saint Thomas?
September is a good month to be in Saint Thomas for sunny weather. You’ll have high temperatures and not too much rain.
The hurricane season in Saint Thomas runs from June to November.
Temperature records for Saint Thomas in September
Check out the climate of Saint Thomas for all months and discover the best travel time
August
Plan your next vacation
Don’t miss the best vacation deals for Saint Thomas and see what our partners have for you.
Daily Temperature in September in Saint Thomas
This chart shows the average daily high and low temperatures in September for Saint Thomas, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Saint Thomas
The chart below shows the average daily precipitation in September for Saint Thomas, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 10 days of precipitation in Saint Thomas.
Daily UV Index in September in Saint Thomas
This chart shows the average daily UV index in September in Saint Thomas, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Saint Thomas Over the Years
This chart shows the average temperature in September in Saint Thomas, measured in degrees Celsius, over the past few years.
Total Precipitation in September in Saint Thomas Over the Years
This chart shows the average precipitation in September in Saint Thomas, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in September for Saint Thomas
Click on any day in September to get detailed info about the usual weather on that day in Saint Thomas. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Saint Thomas
Have you been to Saint Thomas in September?
Share your weather experience in September in Saint Thomas.
Average Weather in Saint Thomas by Month
Click on a month below to see detailed weather info for Saint Thomas. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Saint Thomas for all months at once
