Northern Ireland (Belfast)
December
Weather in Northern Ireland for December 2026
Your guide to Northern Ireland weather in December - trends and predictions
In general, the average temperature in Northern Ireland at the beginning of December is 7.8 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 7.6 °C by the end of December.
Northern Ireland in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 129.6 mm.
Is December a good time to visit Northern Ireland? check out the best time to travel to Northern Ireland page.
✨ Is December a good time to visit Northern Ireland? – Ask the AI Weatherman
Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
8°/4°
Temperatures
30 km/h
Avg max wind
86 %
Avg humidity
Northern Ireland Weather December
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What’s the Weather Like in Northern Ireland This December?
Discover the average temperatures and weather trends across Northern Ireland’s cities this December.
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
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain | 8° /3° | 5.1 mm | 0 cm | |
| 2 Dec. |  Overcast | 6° /1° | 0.3 mm | 0 cm | |
| 3 Dec. | Light rain | 6° /1° | 3.9 mm | 0 cm | |
| 4 Dec. | Light rain | 7° /1° | 3.5 mm | 0 cm | |
| 5 Dec. | Light rain | 8° /3° | 9.5 mm | 0 cm | |
| 6 Dec. |  Moderate rain | 9° /4° | 14 mm | 0 cm | |
| 7 Dec. | Moderate rain | 10° /6° | 15.3 mm | 0 cm | |
| 8 Dec. | Light rain | 8° /5° | 3.2 mm | 0 cm | |
| 9 Dec. | Light rain | 10° /6° | 8.2 mm | 0 cm | |
| 10 Dec. | Light rain | 8° /4° | 1.7 mm | 0 cm | |
| 11 Dec. | Light rain | 7° /3° | 4.9 mm | 0 cm | |
| 12 Dec. | Light rain | 7° /3° | 3.9 mm | 0 cm | |
| 13 Dec. |  Patchy rain possible | 6° /3° | 0.7 mm | 0 cm | |
| 14 Dec. | Light rain | 8° /5° | 3.6 mm | 0 cm | |
| 15 Dec. | Overcast | 9° /6° | 0 mm | 0 cm | |
| 16 Dec. |  Cloudy | 9° /5° | 0 mm | 0 cm | |
| 17 Dec. | Light rain | 11° /5° | 3.3 mm | 0 cm | |
| 18 Dec. | Light drizzle | 11° /5° | 1.9 mm | 0 cm | |
| 19 Dec. | Patchy rain possible | 7° /3° | 0.4 mm | 0 cm | |
| 20 Dec. | Light rain | 9° /4° | 5.4 mm | 0 cm | |
| 21 Dec. | Light rain | 10° /6° | 4.7 mm | 0 cm | |
| 22 Dec. | Light rain | 8° /5° | 4 mm | 0.1 cm | |
| 23 Dec. | Light rain | 10° /6° | 4.6 mm | 0 cm | |
| 24 Dec. | Patchy rain possible | 10° /6° | 1.2 mm | 0 cm | |
| 25 Dec. | Patchy rain possible | 8° /4° | 2.4 mm | 0 cm | |
| 26 Dec. | Patchy rain possible | 7° /3° | 0.7 mm | 0 cm | |
| 27 Dec. | Moderate rain | 9° /4° | 10.2 mm | 0 cm | |
| 28 Dec. | Patchy rain possible | 8° /3° | 2.2 mm | 0 cm | |
| 29 Dec. | Patchy rain possible | 6° /3° | 0.8 mm | 0 cm | |
| 30 Dec. |  Moderate or heavy rain shower | 8° /3° | 7.7 mm | 0 cm | |
| 31 Dec. | Patchy rain possible | 7° /4° | 2.2 mm | 0 cm | |
| 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 8° and colder nights, dipping below 4°.
How much rainfall should be expected in Northern Ireland during December?
Significant rainfall exceeding 129.6 mm is expected in Northern Ireland during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Northern Ireland in December 2026?
Northern Ireland typically sees 0.1 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 30 km/h, suggesting breezy to windy conditions, depending on your activities.
Northern Ireland snow forecast December 2026
Track daily snowfall levels and discover Northern Ireland’s snowy potential this December ❄️
December rainfall patterns in Northern Ireland
Explore the daily rainfall trends and prepare for Northern Irelands December weather 💧
Typically, Northern Ireland has 18 rainy days in December with a total of 129.6 mm of rainfall.
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