Cornwall weather in March 2025

Q: How warm is it in Cornwall in March?

Daytime temperatures usually reach 10°C in Newquay, Cornwall in March, falling to 4°C at night.

Q: How sunny is it in Cornwall in March?

There are normally 4 hours of bright sunshine each day in Newquay, Cornwall in March - that's 34% of daylight hours.

Q: Is the sea cold around Cornwall in March?

The average sea temperature around Newquay, Cornwall in March is 9°C.

Q: Does it rain in Cornwall in March?

There are usually 18 days with some rain in Newquay, Cornwall in March and the average monthly rainfall is 88mm.

Expect 50°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Cornwall in March. Check more long-term weather averages for Cornwall in March before you book your next holiday to Cornwall in 2025/2026.

50
50°F max day temperature
4
4 hours of sunshine per day
18
18 days with some rainfall
39
39°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
3.5
3.5 inches of monthly rainfall
3
3 (Moderate) UV index
48
48°F sea temperature

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

Metric (°C) | Imperial (°F)

More about the UK

How warm is it in Cornwall in March?

Daytime temperatures usually reach 50°F in Newquay, Cornwall in March, falling to 39°F at night.

How sunny is it in Cornwall in March?

There are normally 4 hours of bright sunshine each day in Newquay, Cornwall in March - that's 34% of daylight hours.

How warm is the sea around Cornwall in March?

The average sea temperature around Newquay, Cornwall in March is 48°F.

Does it rain in Cornwall in March?

There are usually 18 days with some rain in Newquay, Cornwall in March and the average monthly rainfall is 3.5 inches.

Cornwall March sunrise & sunset times

Browse the sunrise and sunset times for Cornwall in March 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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