Cornwall weather in July 2025

Expect 66°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cornwall in July. Check more long-term weather averages for Cornwall in July before you book your next holiday to Cornwall in 2025/2026.

  • 66°F maximum daytime temperature in July in Cornwall (Newquay)66
    66°F max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in July in Cornwall (Newquay)13
    13 days with some rainfall
  • 55°F minimum night-time temperature in July in Cornwall (Newquay)55
    55°F min night temperature
  • 16 hours of daylight per day in July in Cornwall (Newquay)16
    16 hours of daylight per day
  • No heat & humidity in July in Cornwall (Newquay)0
    No heat & humidity
  • 2.3 inches monthly rainfall in July in Cornwall (Newquay)2.3
    2.3 inches of monthly rainfall
  • UV (maximum) index 7 (High) in July in Cornwall (Newquay)7
    7 (High) UV index
  • 61°F sea temperature in July in Cornwall (Newquay)61
    61°F sea temperature

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The July weather guide for Cornwall (Newquay) 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.

Top Cornwall destinations

Below are average maximum temperatures at popular countries, regions and places in Cornwall in July. Select a holiday destination to see more weather parameters.

Metric (°C)  |  Imperial (°F)

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More about the UK

How hot is it in Cornwall in July?

Daytime temperatures usually reach 66°F in Newquay, Cornwall in July, falling to 55°F at night.

How sunny is it in Cornwall in July?

There are normally 7 hours of bright sunshine each day in Newquay, Cornwall in July - that's 42% of daylight hours.

How warm is the sea around Cornwall in July?

The average sea temperature around Newquay, Cornwall in July is 61°F.

Does it rain in Cornwall in July?

There are usually 13 days with some rain in Newquay, Cornwall in July and the average monthly rainfall is 2.3 inches.

Cornwall July sunrise & sunset times

Browse the sunrise and sunset times for Cornwall in July 2025. Select a month to view Cornwall sunrise and sunset times for the next 12 months. The Cornwall sunrise and sunset times shown below are for Newquay.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:13 20:35
Wednesday, 16th July 2025 04:27 20:25
Thursday, 31st July 2025 04:47 20:05

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