Belfast weather in December 2021

Get the latest coronavirus (Covid-19) updates for Northern Ireland with current travel advice and statistics on new cases per 100,000 and vaccine.

  • 8°C maximum daytime temperature in December in Belfast8
    8°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Belfast20
    20 days with some rainfall
  • 2°C minimum night-time temperature in December in Belfast2
    2°C min night temperature
  • 7 hours of daylight per day in December in Belfast7
    7 hours of daylight per day
  • No heat & humidity in December in Belfast0
    No heat & humidity
  • 94 mm monthly rainfall in December in Belfast94
    94 mm of monthly rainfall
  • No UV (maximum) index in December in Belfast0
    No UV (Maximum) Index UV index
  • 10°C sea temperature in December in Belfast10
    10°C sea temperature

Recommended for Northern Ireland

  • Top deals & discounts
  • Belfast weather overview
  • Belfast climate averages by month
  • More destinations
  • Best time to go to Belfast
  • Belfast 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The December weather guide for Belfast, Northern Ireland 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.

  • Book holiday cottages up to 2 years in advance
  • Pay just 30% deposit today to secure property
  • Over 15,000 holiday cottages across the UK & Ireland

How warm is it in Belfast in December?

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

How sunny is it in Belfast in December?

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

Is the sea cold around Belfast in December?

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

Does it rain in Belfast in December?

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

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

Back to top

Belfast sunrise & sunset times for December 2021

Browse the sunrise and sunset times for Belfast in December 2021. Select a month to view Belfast sunrise & sunset times for the next 12 months.


Date Sunrise times Sunset times
Wednesday, 1st December 2021 08:23 16:03
Thursday, 16th December 2021 08:41 15:58
Friday, 31st December 2021 08:46 16:08
  • Explore cottages in the UK for groups
  • Enjoy a range of facilities & activities
  • Filter search by selecting holiday preferences

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.