The US Virgin Islands in September
sweet spot · one of the best months to go · the warmest month of the year
The year in The US Virgin Islands
Tap a month for its page
- JanJThe US Virgin Islands in January: good, busy
- FebFThe US Virgin Islands in February: good, busy
- MarMThe US Virgin Islands in March: good, busy
- AprAThe US Virgin Islands in April: sweet spot
- MayMThe US Virgin Islands in May: sweet spot
- JunJThe US Virgin Islands in June: sweet spot
- JulJThe US Virgin Islands in July: good, busy
- AugAThe US Virgin Islands in August: sweet spot
- SepSThe US Virgin Islands in September: sweet spot
- OctOThe US Virgin Islands in October: good
- NovNThe US Virgin Islands in November: good
- DecDThe US Virgin Islands in December: good, busy
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
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Flights
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Where to stay
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Luxury
Things to do
Car hire
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Travel insurance
Check whether your bank card or home insurance already covers this trip.
If the trip needs a visa, the travel agent or visa centre usually sells the cover it asks for.
Mobile data (eSIM)
Your own plan's EU roaming may already cover this.
Renting a pocket Wi-Fi is the other common way to stay connected.
These are sites people in book with. Each opens in a new tab, on the site's own pages.
The numbers
| Daily high | 29°C |
|---|---|
| Nightly low | 27°C |
| Feels like, afternoon | 33°C |
| Rainy days, 1 mm or more | 7 · 141 mm |
| Humidity | 78% |
| Sunshine | 10.8 h/day |
| Daylight | 12.2 h/day |
| Crowds | 100 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
Weather read at Charlotte Amalie, on St Thomas: ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.
How busy it gets
Public holidays in September
Holidays crowd a place out and push fares up around them; they count toward the crowd score above.
The US Virgin Islands in pictures
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Shocksingularity, CC0, via Wikimedia Commons
What to pack
- Summer clothes by day, highs around 29°C.
- A packable rain jacket for the 7 or so rainy days.
- Sun protection: about 11 hours of sunshine a day.
- Humidity averages 78%; breathable fabrics dry faster.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
| Cost of living | expensive — prices run about 89% of the United States' (World Bank, 2025) |
|---|---|
| Currency | United states dollar |
| Languages | English |
| Driving | On the left |
| Calling code | +1340 |
| Travel advice | No advice against travel — UK Foreign Office, updated 2026-08-18 Exercise normal security precautions — Global Affairs Canada, updated 2026-09-24 |
| Health | UK Foreign Office health advice |
Facts from Wikidata (CC0), the UK Foreign Office (Open Government Licence) and the World Bank, refreshed 2026-10-07. The advisory is written for British travellers; entry rules depend on your passport.Travel advice for American readers is the US State Department's (public domain), and for Canadian readers Global Affairs Canada's (Open Government Licence - Canada), each in its own words and written for its own citizens; entry rules depend on your passport.
On arrival in The US Virgin Islands: the apps, paying, getting around, tipping and the emergency numbers.
September elsewhere
In September from
The other months at The US Virgin Islands
- January good
- February good
- March good
- April sweet spot
- May sweet spot
- June sweet spot
- July good
- August sweet spot
- September
- October good
- November good
- December good
← August · All twelve months at The US Virgin Islands · October →
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