Charlotte Amalie climate — normals and trends
Charlotte Amalie (U.S. Virgin Islands) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 915 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (27.3 °C on average) and the coldest is February (24.7 °C). Rainfall peaks in October.
Charlotte Amalie averages 0 frost days, 0 hot days (≥ 30 °C) and 173 rainy days per year.
Charlotte Amalie has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.1 °C (on 13 October 2024) and the coldest 21.3 °C (on 30 January 1950).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Charlotte AmalieSaint Thomas Island
- coords
- 18.34°, -64.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
26.7°C
Average daily low
25.3°C
Annual rainfall
915mm
Sunshine / day
11.3h
Mean relative humidity
79%
Average peak wind
28.7km/h
Seasonal range
2.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
173 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.4 °C
Average feels-like low
26.6 °C
Average peak gust
39.5 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.39 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
30.1 °C
13 October 2024
Coldest day
21.3 °C
30 January 1950
Wettest day
248 mm
18 September 1989
Windiest day
114.5 km/h
18 September 1989
Strongest gust
180.0 km/h
18 September 1989
Hottest feels-like
37.5 °C
19 September 2024
Coldest feels-like
16.6 °C
18 September 1989
Sunniest day
12.9 h
22 July 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.4 °C | +1.0 °C | 40 mm | +7 mm |
| Feb | 26.1 °C | +0.9 °C | 29 mm | +1 mm |
| Mar | 26.2 °C | +0.9 °C | 33 mm | +8 mm |
| Apr | 26.3 °C | +0.5 °C | 109 mm | +63 mm |
| May | 27.4 °C | +0.7 °C | 81 mm | -8 mm |
| Jun | 27.8 °C | +0.3 °C | 20 mm | -47 mm |
| Jul | 28.1 °C | +0.4 °C | 49 mm | -35 mm |
| Aug | 28.7 °C | +0.7 °C | 122 mm | +15 mm |
| Sep | 28.8 °C | +0.8 °C | 161 mm | +28 mm |
| Oct | 28.5 °C | +0.8 °C | 127 mm | -11 mm |
| Nov | 27.7 °C | +0.7 °C | 77 mm | -38 mm |
| Dec | 26.8 °C | +0.7 °C | 30 mm | -20 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Charlotte Amalie?
Charlotte Amalie has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 915 mm of precipitation per year.
What is the hottest day ever recorded in Charlotte Amalie?
The hottest day measured in Charlotte Amalie between 1940 and 2025 was 13 October 2024, reaching 30.1 °C.
What is the coldest day in Charlotte Amalie?
The coldest day measured in Charlotte Amalie between 1940 and 2025 was 30 January 1950, at 21.3 °C.
Does it snow in Charlotte Amalie?
Almost never: Charlotte Amalie sees virtually no snow, with about 0 frost days per year.
Has the climate of Charlotte Amalie warmed?
Yes: Charlotte Amalie warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Charlotte Amalie?
The wettest day measured in Charlotte Amalie between 1940 and 2025 was 18 September 1989, with 248 mm of rain in 24 hours.
What was the windiest day in Charlotte Amalie?
The windiest day measured in Charlotte Amalie between 1940 and 2025 was 18 September 1989, with winds reaching 114.5 km/h.
What is the warmest month in Charlotte Amalie?
The warmest month in Charlotte Amalie is August (27.3 °C on average); the coldest is February (24.7 °C).
How much does it rain in Charlotte Amalie?
Charlotte Amalie receives on average 915 mm of precipitation per year, spread over about 173 rainy days.
Is it sunny in Charlotte Amalie?
Charlotte Amalie gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
Are there tropical nights in Charlotte Amalie?
Yes: Charlotte Amalie has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Charlotte Amalie?
In Charlotte Amalie, between 1940 and 2025, the highest apparent temperature reached 37.5 °C on 19 September 2024, and the lowest was 16.6 °C on 18 September 1989.
Compare Charlotte Amalie with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Charlotte Amalie