Ascensión Weather in December
What's the weather like in Ascensión (Santa Cruz) in December 2025?
The climate in Ascensión during December can be summarized as hot, humid and wet.
December is in the summer in Ascensión and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 31.7°C 89°F |
|---|---|
| Nightly temperature | 21.8°C 71.2°F |
| Average temperature | 26.7°C 80.1°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 155 mm 6.1 ins |
| Rainy days | 12 days |
| Sea temperature | 22.9°C 73.2°F |
| Humidity | 77% |
| Windspeed | 14.4kph 9 mph |
On average December is the 3rd wettest month of the year in Ascensión with around 155mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
December temperatures in Ascensión
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Ascensión in December 2025.
Other monthly averages
Best places to visit in December
Ascensión weather stats
| Hottest month: | October | 32.6°C 90.7°F |
|---|---|---|
| Driest month: | July | 30mm 1.2ins |
| Sunniest month: | August | 8.9hrs |
| Coldest month: | June | 27.1°C 80.8°F |
| Wettest month: | January | 188mm 7.4ins |
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