Charlotte Amalie Weather in September
U.S. Virgin Islands · September climate averages and travel tips
Charlotte Amalie in September sees daytime temperatures around 29°C (85°F), dropping to about 28°C (83°F) at night. The month is wet, with about 128 mm (5.0 in) of rain spread over 21 days, making it the second wettest month of the year. Humidity averages 78%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.1 hours of daylight and a mix of sun and cloud.
Is September a good time to visit Charlotte Amalie?
September is not the best time to visit Charlotte Amalie (4.2/10) mainly because of the rain. The weather is much better in January to April.
Visiting Charlotte Amalie in September
September weather
September feels hot, sticky and often cloudy in Charlotte Amalie. The high is 29°C and the low is 28°C, with 78% humidity. Rain falls on 21 days, though showers don't necessarily last all day. You'll get about 6.3 hours of sun each day.
That mix can interrupt beach time and leave the stone streets slick. Keep indoor stops like the St. Thomas Synagogue or Fort Christian in mind for rainy spells. The 99 Steps are steep; take care there when wet. September gets less rain than October, but more than August.
What to do
A passing shower can still leave time for a waterfront stroll or a meal of kallaloo, a leafy stew found in the islands. For a beach day, Magens Bay is a popular choice, but don't count on clear skies all day. Boat trips and snorkelling are more weather-dependent, so keep your plans flexible.
If you hate crowds, September can suit you: it's low season, unlike the busier winter months. You'll generally find fewer visitors and lower prices than during the January-to-April high season. Some tour operators may run less often, so check local options before setting out.
Events and local tips
Labor Day is observed in the U.S. Virgin Islands in September, though it isn't a major Charlotte Amalie festival. This is also hurricane season, so tropical weather can disrupt ferries or excursions. Watch local notices if a storm is approaching.
Travelling with kids? Try the Pirates of the Caribbean Museum near the waterfront for an indoor break. For a practical local tip, use the covered arcades along Main Street when a shower hits; you can duck between shops without leaving the historic shopping district.
September weather at a glance
| Average high | 29°C (85°F) |
|---|---|
| Average low | 28°C (83°F) |
| Daily mean | 29°C (84°F) |
| Rainfall | 128 mm (5.0 in) |
| Rainy days (1 mm+) | 21 |
| Humidity | 78% |
| Cloud cover | 53% |
| Daylight | 12.1 hours |
| Est. sunshine | 6.3 hours/day |
| Wind | 16.5 km/h |
| vs August | About as warm as August, with 19 mm more rain. |
What to pack for Charlotte Amalie in September
- light, breathable clothing
- sunscreen and a hat
- an umbrella or rain jacket
Charlotte Amalie weather in other months
← AugustBest time to visit Charlotte AmalieOctober →
Better weather in September nearby
- San Francisco, California24°C · 4 mm · Excellent
- Seattle, Washington21°C · 62 mm · Excellent
- Denver, Colorado29°C · 35 mm · Excellent
- Calgary20°C · 49 mm · Excellent
- Edmonton19°C · 41 mm · Excellent
- Toronto22°C · 62 mm · Excellent
Nearby in September
- Road Town29°C · 85 mm
- San Juan30°C · 157 mm
- Marigot29°C · 83 mm
- The Valley29°C · 83 mm
- Philipsburg29°C · 83 mm
- Gustavia29°C · 83 mm
Where else is good in September? See where to go in September.