Guernsey weather in August 2021

20
20°C max day temperature
7
7 hours of sunshine per day
11
11 days with some rainfall
14
14°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
45
45 mm of monthly rainfall
6
6 (High) UV index
17
17°C sea temperature

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The August weather guide for Guernsey 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.

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How hot is it in Guernsey in August?

Daytime temperatures usually reach 20°C in St Peter Port, Guernsey in August, falling to 14°C at night.

How sunny is it in Guernsey in August?

There are normally 7 hours of bright sunshine each day in St Peter Port, Guernsey in August - that's 52% of daylight hours.

How warm is the sea around Guernsey in August?

The average sea temperature around St Peter Port, Guernsey in August is 17°C.

Does it rain in Guernsey in August?

There are usually 11 days with some rain in St Peter Port, Guernsey in August and the average monthly rainfall is 45mm.

Metric (°C / mm) | Imperial (°F / inches)

Guernsey sunrise & sunset times for August 2021

Browse the sunrise & sunset times for Guernsey in August 2021. Select a month to view Guernsey sunrise & sunset times for the next twelve months. The Guernsey sunrise & sunset times shown below are for St Peter Port.

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