Holyhead weather in August 2026

Expect daytime maximum temperatures of 19°C in Holyhead, Wales in August based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 77 mm of rainfall in the month.

  • 19°C maximum daytime temperature in August in Holyhead19
    19°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in August in Holyhead16
    16 days with some rainfall
  • 12°C minimum night-time temperature in August in Holyhead12
    12°C min night temperature
  • 15 hours of daylight per day in August in Holyhead15
    15 hours of daylight per day
  • No heat & humidity in August in Holyhead0
    No heat & humidity
  • 77 mm monthly rainfall in August in Holyhead77
    77 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Holyhead5
    5 (Moderate) UV index
  • 15°C sea temperature in August in Holyhead15
    15°C sea temperature

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The August weather guide for Wales (Holyhead) 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)

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More about Wales

How hot is it in Holyhead in August?

Daytime temperatures usually reach 20°C in Holyhead in August, falling to 12°C at night.

How sunny is it in Holyhead in August?

There are normally 6 hours of bright sunshine each day in Holyhead in August - that's 41% of daylight hours.

How warm is the sea around Holyhead in August?

The average sea temperature around Holyhead in August is 18°C.

Does it rain in Holyhead in August?

There are usually 15 days with some rain in Holyhead in August and the average monthly rainfall is 81mm.

Holyhead August sunrise & sunset times

Browse the sunrise and sunset times for Holyhead in August 2026. Select a month to view Holyhead sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 04:35 20:14
Sunday, 16th August 2026 05:00 19:44
Monday, 31st August 2026 05:26 19:10

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