Monmouth weather in August 2025

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

  • 68°F maximum daytime temperature in August in Monmouth68
    68°F max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in August in Monmouth14
    14 days with some rainfall
  • 52°F minimum night-time temperature in August in Monmouth52
    52°F min night temperature
  • 15 hours of daylight per day in August in Monmouth15
    15 hours of daylight per day
  • No heat & humidity in August in Monmouth0
    No heat & humidity
  • 2.7 inches monthly rainfall in August in Monmouth2.7
    2.7 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Monmouth5
    5 (Moderate) UV index

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The August weather guide for Wales (Monmouth) 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 Wales

How hot is it in Monmouth in August?

Daytime temperatures usually reach 68°F in Monmouth in August, falling to 52°F at night.

How sunny is it in Monmouth in August?

There are normally 6 hours of bright sunshine each day in Monmouth in August - that's 39% of daylight hours.

Does it rain in Monmouth in August?

There are usually 14 days with some rain in Monmouth in August and the average monthly rainfall is 2.7 inches.

Monmouth August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:34 20:00
Saturday, 16th August 2025 04:57 19:32
Sunday, 31st August 2025 05:22 19:00

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