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 19°C 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.

19
19°C max day temperature
7
7 hours of sunshine per day
13
13 days with some rainfall
13
13°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
58
58 mm of monthly rainfall
7
7 (High) UV index
16
16°C 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 / mm) | Imperial (°F / inches)

More about the UK

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.

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 16°C.

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.

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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