Charlotte Amalie Weather in September
September in Charlotte Amalie averages 30°C (86°F) during the day and 27°C (81°F) at night. It is the wettest month of the year, with 148 mm (5.8 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Charlotte Amalie in September
Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. You can typically expect 18 days of rain this month, averaging around 148 mm (5.8 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Charlotte Amalie in September
In September, Charlotte Amalie gets high temperatures, with highs of 30°C (86°F). Nights cool to around 27°C (81°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights remain warm at around 27°C (81°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.September in Charlotte Amalie has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit US Virgin Islands, check out our Charlotte Amalie's climate page.
Charlotte Amalie Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
61%
Precipitation
148 mm (5.8 in)
Rainy days
18 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Charlotte Amalie typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Charlotte Amalie in September
Browse day-by-day weather records for Charlotte Amalie spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Charlotte Amalie historical weather extremes in September
Based on 49 years of weather observations in Charlotte Amalie between 1976 and 2025, these are the recorded extremes.
- Charlotte Amalie recorded its highest September temperature of 39°C (102°F) on September 7, 2007.
- On September 4, 1979, Charlotte Amalie saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The coldest night in September in Charlotte Amalie was on September 4, 1979, with a minimum of 18°C (64°F).
Best Places in US Virgin Islands in September
Find out more about the weather in US Virgin Islands and which places have the best travel conditions in this month. See all of US Virgin Islands in September →
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What to Wear in Charlotte Amalie in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Charlotte Amalie in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit US Virgin Islands, check out our Charlotte Amalie's climate page.
See the full Charlotte Amalie climate overview or explore weather in US Virgin Islands.
