Cornwall weather in January 2025

Expect 9°C daytime maximum temperatures in the shade with on average 2 hours of sunshine per day in Cornwall in January. Check more long-term weather averages for Cornwall in January before you book your next holiday to Cornwall in 2025/2026.

  • 9°C maximum daytime temperature in January in Cornwall (Newquay)9
    9°C max day temperature
  • 2 hours of sunshine per day
  • 21 days with some rainfall in January in Cornwall (Newquay)21
    21 days with some rainfall
  • 4°C minimum night-time temperature in January in Cornwall (Newquay)4
    4°C min night temperature
  • 9 hours of daylight per day in January in Cornwall (Newquay)9
    9 hours of daylight per day
  • No heat & humidity in January in Cornwall (Newquay)0
    No heat & humidity
  • 122 mm monthly rainfall in January in Cornwall (Newquay)122
    122 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Cornwall (Newquay)1
    1 (Low) UV index
  • 10°C sea temperature in January in Cornwall (Newquay)10
    10°C sea temperature

More about Cornwall

Cornwall by month

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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 destinations in Cornwall in January. Select a destination to see more weather parameters.

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

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More about the UK

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.

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.

Is the sea cold around Cornwall in January?

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

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.

Cornwall January sunrise & sunset times

Browse the sunrise and sunset times for Cornwall in January 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.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 08:21 16:28
Thursday, 16th January 2025 08:14 16:47
Friday, 31st January 2025 07:56 17:12

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