St Helier weather in August 2019

  • 20°C maximum daytime temperature in August in St Helier20
    20°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in August in St Helier11
    11 days with some rainfall
  • 14°C minimum night-time temperature in August in St Helier14
    14°C min night temperature
  • 14 hours of daylight per day in August in St Helier14
    14 hours of daylight per day
  • No heat & humidity in August in St Helier0
    No heat & humidity
  • 52 mm monthly rainfall in August in St Helier52
    52 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in St Helier6
    6 (High) UV index
  • 18°C sea temperature in August in St Helier18
    18°C sea temperature
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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.

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

Guide to St Helier weather in August

The average maximum daytime temperature in St Helier in August is a comfortable 20°C (68°F). The average night-time temperature is usually a comfortable 14°C (57°F). There are usually 8 hours of bright sunshine each day, which represents 52% of the 14 hours of daylight.

Expect 52mm (2.0 inches) of rainfall across the whole of August with 11 days with some rain falling. Maximum UV levels will be high (6 UV index) at midday when the skies are clear.

The average sea temperature in and around St Helier in August is 18°C (64°F).

St Helier sunrise & sunset times for August 2019

Browse the sunrise & sunset times for St Helier in August 2019. Select a month to view St Helier sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 05:40 20:49
Friday, 16th August 2019 06:01 20:23
Saturday, 31st August 2019 06:23 19:54
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Expires at 23:59 on Saturday 31st Aug 2019 · View all Booking.com offers

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