Bolongo Weather in September
During September, Bolongo experiences high daytime temperatures of 30°C (86°F) and cooler nights around 27°C (81°F). As the wettest month of the year, expect frequent rainfall.
Rainfall in Bolongo in September
With frequent rain showers this month, having an umbrella on hand will keep you dry. The climate data from previous years indicates about 18 days of rain, averaging 148 mm (5.8 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Bolongo in September
In September, expect high temperatures in Bolongo, with highs of 30°C (86°F) and lows of 27°C (81°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.September in Bolongo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations 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 Bolongo's climate page.
Bolongo 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 Bolongo 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 Bolongo in September
Browse day-by-day weather records for Bolongo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bolongo historical weather extremes in September
Our historical data for Bolongo spans 1976 to 2025, revealing these weather extremes.
- The warmest day in September was on September 7, 2007, with a maximum of 39°C (102°F).
- On September 4, 1979, Bolongo saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The lowest overnight temperature recorded in September was 18°C (64°F) (September 4, 1979).
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 Bolongo in September
Warm but pleasant conditions in Bolongo in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Bolongo 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 Bolongo's climate page.
See the full Bolongo climate overview or explore weather in US Virgin Islands.
