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Weather in Northern Ireland for December 2025

Your guide to Northern Ireland weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Yellow Rain Warning - See hour by hour.

    • Temperatures

  • So far, December 2025 in Northern Ireland is slightly warmer than the historical average by 0.7 °C.

  • The forecast for the next days in Northern Ireland predicts temperatures to be around 9 °C, close to the historical average.

  • In general, the average temperature in Northern Ireland at the beginning of December is 8.1 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 8.3 °C by the end of December.

    • Rain 🌧️

  • Northern Ireland experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 288.6 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
10
Dry days
Average rainy days
21
Rainy days
Average snowy days
0
Snow days
Average temperatures
10°/2°
Temperatures
Average wind speed
31 km/h
Avg max wind
Average humidity
86 %
Avg humidity

Northern Ireland Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Cloudy
9°
2
Overcast
6°
3
Light rain shower
6°
4
Light rain shower
7°
5
Light rain shower
9°
6
Moderate rain
10°
7
Light rain shower
10°
8
Light rain
8°
9
Light rain shower
10°
10
Light rain
8°
11
Overcast
8°
12
Light rain shower
7°
13
Weather Alert Patchy rain possible
9°
14
Weather Alert Moderate rain
11°
15
Weather Alert Patchy rain possible
8°
16
Sunny
5°
17
Moderate rain
10°
18
Patchy rain possible
10°
19
Patchy rain possible
7°
20
Moderate rain
10°
21
Patchy rain possible
13°
22
Patchy rain possible
12°
23
Overcast
6°
24
Patchy rain possible
7°
25
Patchy rain possible
9°
26
Patchy rain possible
6°
27
Moderate or heavy rain shower
10°
28
Moderate or heavy rain shower
9°
29
Heavy rain at times
7°
30
Moderate or heavy rain shower
9°
31
Patchy rain possible
8°

What’s the Weather Like in Northern Ireland This December?

Discover the average temperatures and weather trends across Northern Ireland’s cities this December.
Patchy rain possibleBelfast10 °C / 2 °CPatchy rain possibleBangor9 °C / 6 °CPatchy rain possibleDerry10 °C / 2 °CPatchy rain possibleLisburn8 °C / 4 °CPatchy rain possibleNewtownabbey9 °C / 4 °CPatchy rain possibleCraigavon8 °C / 4 °CModerate or heavy rain showerPortrush10 °C / 6 °CPatchy rain possibleEnniskillen8 °C / 4 °CMore Locations

Temperatures trend during December in Northern Ireland

See the weather trend as well as the moving average line

December weather in Northern Ireland day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Cloudy
Cloudy
 9° /3° 5.1 mm 2
2 Dec. Overcast
Overcast
 6° /1° 0.3 mm 2
3 Dec. Light rain shower
Light rain shower
 6° /1° 3.9 mm 2
4 Dec. Light rain shower
Light rain shower
 7° /1° 3.5 mm 2
5 Dec. Light rain shower
Light rain shower
 9° /3° 9.5 mm 2
6 Dec. Moderate rain
Moderate rain
 10° /4° 14 mm 2
7 Dec. Light rain shower
Light rain shower
 10° /5° 15.3 mm 3
8 Dec. Light rain
Light rain
 8° /5° 3.2 mm 2
9 Dec. Light rain shower
Light rain shower
 10° /5° 8.2 mm 3
10 Dec. Light rain
Light rain
 8° /4° 1.7 mm 2
11 Dec. Overcast
Overcast
 8° /3° 4.9 mm 2
12 Dec. Light rain shower
Light rain shower
 7° /2° 3.9 mm 2
13 Dec. Patchy rain possible
Patchy rain possible
 9° /4° 2.1 mm 0
14 Dec. Moderate rain
Moderate rain
 11° /10° 11.1 mm 0
15 Dec. Patchy rain possible
Patchy rain possible
 8° /4° 0.5 mm 0.1
16 Dec. Sunny
Sunny
 5° /2° 0 mm 0.1
17 Dec. Moderate rain
Moderate rain
 10° /5° 6 mm 0
18 Dec. Patchy rain possible
Patchy rain possible
 10° /5° 2.3 mm 2
19 Dec. Patchy rain possible
Patchy rain possible
 7° /6° 0.3 mm 2
20 Dec. Moderate rain
Moderate rain
 10° /7° 7.3 mm 2
21 Dec. Patchy rain possible
Patchy rain possible
 13° /7° 4.6 mm 2
22 Dec. Patchy rain possible
Patchy rain possible
 12° /7° 3.2 mm 2
23 Dec. Overcast
Overcast
 6° /3° 0 mm 2
24 Dec. Patchy rain possible
Patchy rain possible
 7° /1° 0.5 mm 1
25 Dec. Patchy rain possible
Patchy rain possible
 9° /3° 2.8 mm 2
26 Dec. Patchy rain possible
Patchy rain possible
 6° /1° 0.2 mm 1
27 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /4° 13.6 mm 3
28 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /4° 2.9 mm 2
29 Dec. Heavy rain at times
Heavy rain at times
 7° /3° 1 mm 2
30 Dec. Moderate or heavy rain shower
Moderate or heavy rain shower
 9° /3° 10.3 mm 2
31 Dec. Patchy rain possible
Patchy rain possible
 8° /4° 3 mm 2
Next
Important Notice
Our weather forecast for Northern Ireland in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Northern Ireland forecast closer to your planned date for the most up-to-date weather information.
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Northern Ireland in December - FAQ

What are the expected maximum and minimum temperatures in Northern Ireland during December?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 2°.
How much rainfall should be expected in Northern Ireland during December?
Significant rainfall exceeding 288.6 mm is expected in Northern Ireland during December, occurring over more than 21 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Northern Ireland in December 2025?
Northern Ireland typically sees 0.3 cm of snowfall during December.
What are the typical wind conditions in Northern Ireland during December?
The average wind speed in Northern Ireland during December is 31 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Northern Ireland

Explore the daily rainfall trends and prepare for Northern Irelands December weather 💧
Typically, Northern Ireland has 21 rainy days in December with a total of 288.6 mm of rainfall.
Counties in Northern Ireland
Select a county for an accurate weather forecast
Antrim and NewtownabbeyArds and North DownArmagh City Banbridge and CraigavonCauseway Coast and GlensCity of BelfastDerry City and StrabaneFermanagh and OmaghLisburn and Castlereagh
Top locations in Northern Ireland
Select a location for an accurate weather forecast
BangorBelfastCraigavonDerryEnniskillenLisburnNewtownabbeyPortrush
More Locations

Quick links

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Location coordinates Where is Northern Ireland?

Get accurate weather forecasts for Northern Ireland, located at latitude 54.597 and longitude -5.925. Stay updated with localized weather information tailored for Northern Ireland.

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