Grimsby weather in August 2025

Expect 68°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Grimsby in August. Check more long-term weather averages for Grimsby in August before you book your next holiday to England in 2025/2026.

  • 68°F maximum daytime temperature in August in Grimsby68
    68°F max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in August in Grimsby13
    13 days with some rainfall
  • 54°F minimum night-time temperature in August in Grimsby54
    54°F min night temperature
  • 15 hours of daylight per day in August in Grimsby15
    15 hours of daylight per day
  • No heat & humidity in August in Grimsby0
    No heat & humidity
  • 2.4 inches monthly rainfall in August in Grimsby2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Grimsby5
    5 (Moderate) UV index
  • 59°F sea temperature in August in Grimsby59
    59°F sea temperature

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The August weather guide for England (Grimsby) 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)  |  Imperial (°F)

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More about England

How hot is it in Grimsby in August?

Daytime temperatures usually reach 68°F in Grimsby in August, falling to 54°F at night.

How sunny is it in Grimsby in August?

There are normally 6 hours of bright sunshine each day in Grimsby in August - that's 38% of daylight hours.

How warm is the sea around Grimsby in August?

The average sea temperature around Grimsby in August is 59°F.

Does it rain in Grimsby in August?

There are usually 13 days with some rain in Grimsby in August and the average monthly rainfall is 2.4 inches.

Grimsby August sunrise & sunset times

Browse the sunrise and sunset times for Grimsby in August 2025. Select a month to view Grimsby sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:16 19:56
Saturday, 16th August 2025 04:42 19:26
Sunday, 31st August 2025 05:08 18:52

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