Brighton weather in August 2025

Q: How hot is it in Brighton in August?

Daytime temperatures usually reach 21°C in Brighton in August, falling to 12°C at night.

Q: How sunny is it in Brighton in August?

There are normally 7 hours of bright sunshine each day in Brighton in August - that's 46% of daylight hours.

Q: How warm is the sea around Brighton in August?

The average sea temperature around Brighton in August is 17°C.

Q: Does it rain in Brighton in August?

There are usually 12 days with some rain in Brighton in August and the average monthly rainfall is 66mm.

Expect daytime maximum temperatures of 21°C in Brighton, England in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 66 mm of rainfall in the month.

21
21°C max day temperature
7
7 hours of sunshine per day
12
12 days with some rainfall
12
12°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
66
66 mm of monthly rainfall
6
6 (High) UV index
17
17°C sea temperature

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The August weather guide for England (Brighton) 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 / mm) | Imperial (°F / inches)