Cornwall weather in May 2025

Q: How warm is it in Cornwall in May?

Daytime temperatures usually reach 14°C in Newquay, Cornwall in May, falling to 8°C at night.

Q: How sunny is it in Cornwall in May?

There are normally 7 hours of bright sunshine each day in Newquay, Cornwall in May - that's 44% of daylight hours.

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

The average sea temperature around Newquay, Cornwall in May is 12°C.

Q: Does it rain in Cornwall in May?

There are usually 15 days with some rain in Newquay, Cornwall in May and the average monthly rainfall is 60mm.

Expect 14°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cornwall in May. Check more long-term weather averages for Cornwall in May before you book your next holiday to Cornwall in 2025/2026.

14
14°C max day temperature
7
7 hours of sunshine per day
15
15 days with some rainfall
8
8°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
60
60 mm of monthly rainfall
6
6 (High) UV index
12
12°C sea temperature

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The May 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 May. Select a holiday destination to see more weather parameters.

Metric (°C / mm) | Imperial (°F / inches)

More about the UK

How warm is it in Cornwall in May?

Daytime temperatures usually reach 14°C in Newquay, Cornwall in May, falling to 8°C at night.

How sunny is it in Cornwall in May?

There are normally 7 hours of bright sunshine each day in Newquay, Cornwall in May - that's 44% of daylight hours.

How warm is the sea around Cornwall in May?

The average sea temperature around Newquay, Cornwall in May is 12°C.

Does it rain in Cornwall in May?

There are usually 15 days with some rain in Newquay, Cornwall in May and the average monthly rainfall is 60mm.

Cornwall May sunrise & sunset times

Browse the sunrise and sunset times for Cornwall in May 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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