Cornwall weather in July 2025

Q: How hot is it in Cornwall in July?

Daytime temperatures usually reach 19°C in Newquay, Cornwall in July, falling to 13°C at night.

Q: 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.

Q: How warm is the sea around Cornwall in July?

The average sea temperature around Newquay, Cornwall in July is 16°C.

Q: 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 58mm.

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
66°F max day temperature
7
7 hours of sunshine per day
13
13 days with some rainfall
55
55°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
2.3
2.3 inches of monthly rainfall
7
7 (High) UV index
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)

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.

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