Scilly Isles weather in December 2025

Q: How warm is it in Scilly Isles in December?

Daytime temperatures usually reach 10°C in Scilly Isles in December, falling to 5°C at night.

Q: How sunny is it in Scilly Isles in December?

There are normally 2 hours of bright sunshine each day in Scilly Isles in December - that's 20% of daylight hours.

Q: Is the sea cold around Scilly Isles in December?

The average sea temperature around Scilly Isles in December is 11°C.

Q: Does it rain in Scilly Isles in December?

There are usually 20 days with some rain in Scilly Isles in December and the average monthly rainfall is 142mm.

Expect daytime maximum temperatures of 10°C in Scilly Isles, England in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 142 mm of rainfall in the month.

10
10°C max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
5
5°C min night temperature
8
8 hours of daylight per day
0
No heat & humidity
142
142 mm of monthly rainfall
1
1 (Low) UV index
11
11°C sea temperature

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The December weather guide for England (Scilly Isles) 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.

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

More about England

How warm is it in Scilly Isles in December?

Daytime temperatures usually reach 10°C in Scilly Isles in December, falling to 5°C at night.

How sunny is it in Scilly Isles in December?

There are normally 2 hours of bright sunshine each day in Scilly Isles in December - that's 20% of daylight hours.

Is the sea cold around Scilly Isles in December?

The average sea temperature around Scilly Isles in December is 11°C.

Does it rain in Scilly Isles in December?

There are usually 20 days with some rain in Scilly Isles in December and the average monthly rainfall is 142mm.

Scilly Isles December sunrise & sunset times

Browse the sunrise and sunset times for Scilly Isles in December 2025. Select a month to view Scilly Isles sunrise and sunset times for the next 12 months.

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