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St Helier weather in August 2021
- 2020°C max day temperature
- 1111 days with some rainfall
- 1414°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 5252 mm of monthly rainfall
- 66 (High) UV index
- 1818°C sea temperature
Recommended for Jersey
The August weather guide for St Helier, Jersey 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.
How hot is it in St Helier in August?
Daytime temperatures usually reach 20°C in St Helier in August, falling to 14°C at night.
How sunny is it in St Helier in August?
There are normally 8 hours of bright sunshine each day in St Helier in August - that's 52% of daylight hours.
How warm is the sea around St Helier in August?
The average sea temperature around St Helier in August is 18°C.
Does it rain in St Helier in August?
There are usually 11 days with some rain in St Helier in August and the average monthly rainfall is 52mm.
Metric (°C / mm) | Imperial (°F / inches)
St Helier sunrise & sunset times for August 2021
Browse the sunrise and sunset times for St Helier in August 2021. Select a month to view St Helier sunrise & sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Sunday, 1st August 2021||05:41||20:48|
|Monday, 16th August 2021||06:02||20:22|
|Tuesday, 31st August 2021||06:23||19:53|
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