Londonderry weather in December 2025

Q: How warm is it in Londonderry in December?

Daytime temperatures usually reach 8°C in Londonderry in December, falling to 2°C at night.

Q: How sunny is it in Londonderry in December?

There are normally 1 hour of bright sunshine each day in Londonderry in December - that's 18% of daylight hours.

Q: Is the sea cold around Londonderry in December?

The average sea temperature around Londonderry in December is 10°C.

Q: Does it rain in Londonderry in December?

There are usually 20 days with some rain in Londonderry in December and the average monthly rainfall is 94mm.

Expect daytime maximum temperatures of 45°F in Londonderry, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 4.9 inches of rainfall in the month.

45
45°F max day temperature
1
1 hour of sunshine per day
23
23 days with some rainfall
36
36°F min night temperature
7
7 hours of daylight per day
0
No heat & humidity
4.9
4.9 inches of monthly rainfall
0
No UV (Maximum) Index UV index

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The December weather guide for Northern Ireland (Londonderry) 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) | Imperial (°F)

More about the UK

How warm is it in Londonderry in December?

Daytime temperatures usually reach 46°F in Londonderry in December, falling to 36°F at night.

How sunny is it in Londonderry in December?

There are normally 1 hour of bright sunshine each day in Londonderry in December - that's 18% of daylight hours.

How warm is the sea around Londonderry in December?

The average sea temperature around Londonderry in December is 50°F.

Does it rain in Londonderry in December?

There are usually 20 days with some rain in Londonderry in December and the average monthly rainfall is 3.7 inches.

Londonderry December sunrise & sunset times

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

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