Cornwall weather in January 2026

Q: How warm is it in Cornwall in January?

Daytime temperatures usually reach 9°C in Newquay, Cornwall in January, falling to 4°C at night.

Q: How sunny is it in Cornwall in January?

There are normally 2 hours of bright sunshine each day in Newquay, Cornwall in January - that's 21% of daylight hours.

Q: Is the sea cold around Cornwall in January?

The average sea temperature around Newquay, Cornwall in January is 10°C.

Q: Does it rain in Cornwall in January?

There are usually 21 days with some rain in Newquay, Cornwall in January and the average monthly rainfall is 122mm.

Expect daytime maximum temperatures of 48°F in Cornwall, UK in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 21 days with some rainfall and typically 4.8 inches of rainfall in the month.

48
48°F max day temperature
2
2 hours of sunshine per day
21
21 days with some rainfall
39
39°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
4.8
4.8 inches of monthly rainfall
1
1 (Low) UV index
50
50°F sea temperature

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

Metric (°C) | Imperial (°F)

More about the UK

How warm is it in Cornwall in January?

Daytime temperatures usually reach 48°F in Newquay, Cornwall in January, falling to 39°F at night.

How sunny is it in Cornwall in January?

There are normally 2 hours of bright sunshine each day in Newquay, Cornwall in January - that's 21% of daylight hours.

How warm is the sea around Cornwall in January?

The average sea temperature around Newquay, Cornwall in January is 50°F.

Does it rain in Cornwall in January?

There are usually 21 days with some rain in Newquay, Cornwall in January and the average monthly rainfall is 4.8 inches.

Cornwall January sunrise & sunset times

Browse the sunrise and sunset times for Cornwall in January 2026. 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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