September weather forecast and climate
Charlotte Amalie, VI

An aerial night view of the Charlotte Amalie Harbour within the United States Virgin Islands, USA
An aerial night view of the Charlotte Amalie Harbour within the United States Virgin Islands, USA

What is the temperature in September in Charlotte Amalie?

In September, in Charlotte Amalie, United States Virgin Islands, the average high-temperature is 90°F (32.2°C), and the average low-temperature is 78.1°F (25.6°C).

How many days does it rain in September in Charlotte Amalie?

In September, in Charlotte Amalie, the rain falls for 14.6 days. Throughout September, 4.8" (122.4mm) of precipitation is accumulated.
Average temperature in September - Charlotte Amalie, VI
  • Average high temperature in September: 32.2°C

The warmest month (with the highest average high temperature) is August (32.3°C).
Months with the lowest average high temperature are January and February (29.5°C).

  • Average low temperature in September: 25.6°C

Months with the highest average low temperature are July, August and September (25.6°C).
Coldest months (with the lowest average low temperature) are January and February (22.4°C).

Average rainfall in September - Charlotte Amalie, VI
  • Average rainfall in September: 122.4mm

The wettest month (with the highest rainfall) is November (152.4mm).
The driest month (with the lowest rainfall) is March (26.7mm).

Average rainfall days in September - Charlotte Amalie, VI
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is November (17.8 days).
The month with the lowest number of rainy days is March (8.1 days).

Average sea temperature in September - Charlotte Amalie, VI
  • Average sea temperature in September: 29.4°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is February (25.9°C).

Average daylight in September / Average sunshine in September - Charlotte Amalie, VI
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 8h

Months with most sunshine are March, April, July and August (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 7).

Average UV index in September - Charlotte Amalie, VI
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).

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