Ballycastle weather in December 2025

Q: How cold is it in Ballycastle in December?

Daytime temperatures usually reach 7°C in Ballycastle in December, falling to 2°C at night.

Q: How sunny is it in Ballycastle in December?

There are normally 1 hour of bright sunshine each day in Ballycastle in December - that's 14% of daylight hours.

Q: Is the sea cold around Ballycastle in December?

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

Q: Does it rain in Ballycastle in December?

There are usually 21 days with some rain in Ballycastle in December and the average monthly rainfall is 118mm.

Expect daytime maximum temperatures of 45°F in Ballycastle, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 21 days with some rainfall and typically 4.6 inches of rainfall in the month.

45
45°F max day temperature
1
1 hour of sunshine per day
21
21 days with some rainfall
36
36°F min night temperature
7
7 hours of daylight per day
0
No heat & humidity
4.6
4.6 inches of monthly rainfall
0
No UV (Maximum) Index UV index
50
50°F sea temperature

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The December weather guide for Northern Ireland (Ballycastle) 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 cold is it in Ballycastle in December?

Daytime temperatures usually reach 45°F in Ballycastle in December, falling to 36°F at night.

How sunny is it in Ballycastle in December?

There are normally 1 hour of bright sunshine each day in Ballycastle in December - that's 14% of daylight hours.

How warm is the sea around Ballycastle in December?

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

Does it rain in Ballycastle in December?

There are usually 21 days with some rain in Ballycastle in December and the average monthly rainfall is 4.6 inches.

Ballycastle December sunrise & sunset times

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

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