Ascension Island weather in January 2026

Q: How hot is it in Ascension Island in January?

Daytime temperatures usually reach 22°C in Ascension Island in January, falling to 18°C at night.

Q: How warm is the sea around Ascension Island in January?

The average sea temperature around Ascension Island in January is 23°C.

Q: Does it ever rain in Ascension Island in January?

There are usually 14 days with some rain in Ascension Island in January and the average monthly rainfall is 53mm.

Expect daytime maximum temperatures of 81°F in Ascension Island, St Helena & Islands in January based on long-term weather averages. There are 7 hours of sunshine per day on average.

81
81°F max day temperature
7
7 hours of sunshine per day
8
8 days with some rainfall
75
75°F min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
0.4
0.4 inches of monthly rainfall
11
11+ (Extreme) UV index
79
79°F sea temperature

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The January weather guide for St Helena & Islands (Ascension Island) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)

How hot is it in Ascension Island in January?

Daytime temperatures usually reach 72°F in Ascension Island in January, falling to 64°F at night.

How warm is the sea around Ascension Island in January?

The average sea temperature around Ascension Island in January is 73°F.

Does it ever rain in Ascension Island in January?

There are usually 14 days with some rain in Ascension Island in January and the average monthly rainfall is 2.1 inches.

Ascension Island January sunrise & sunset times

Browse the sunrise and sunset times for Ascension Island in January 2026. Select a month to view Ascension Island sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec