Ascension Island weather in August 2025

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

Daytime temperatures usually reach 26°C in Ascension Island in August with low heat and humidity, falling to 23°C at night.

Q: How sunny is it in Ascension Island in August?

There are normally 7 hours of bright sunshine each day in Ascension Island in August - that's 59% of daylight hours.

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

The average sea temperature around Ascension Island in August is 25°C.

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

There are usually 20 days with some rain in Ascension Island in August and the average monthly rainfall is 28mm.

Expect 79°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Ascension Island in August. Check more long-term weather averages for Ascension Island in August before you book your next holiday to St Helena & Islands in 2025/2026.

79
79°F max day temperature
7
7 hours of sunshine per day
20
20 days with some rainfall
73
73°F min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
1.1
1.1 inches of monthly rainfall
11
11 (Extreme) UV index
77
77°F sea temperature

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The August 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 August?

Daytime temperatures usually reach 79°F in Ascension Island in August with low heat and humidity, falling to 73°F at night.

How sunny is it in Ascension Island in August?

There are normally 7 hours of bright sunshine each day in Ascension Island in August - that's 59% of daylight hours.

How warm is the sea around Ascension Island in August?

The average sea temperature around Ascension Island in August is 77°F.

Does it ever rain in Ascension Island in August?

There are usually 20 days with some rain in Ascension Island in August and the average monthly rainfall is 1.1 inches.

Ascension Island August sunrise & sunset times

Browse the sunrise and sunset times for Ascension Island in August 2025. Select a month to view Ascension Island sunrise and sunset times for the next 12 months.

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