Lisburn and Castlereagh (Lisburn)
December
Weather in Lisburn and Castlereagh for December 2026
Your guide to Lisburn and Castlereagh weather in December - trends and predictions
In general, the average temperature in Lisburn and Castlereagh at the beginning of December is 7.3 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 7.3 °C by the end of December.
Lisburn and Castlereagh in December brings notable rainfall, with an average of 17 rainy days and a total precipitation of 120.1 mm.
Is December a good time to visit Lisburn and Castlereagh? check out the best time to travel to Lisburn and Castlereagh page.
✨ Is December a good time to visit Lisburn and Castlereagh? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
14
Dry days
17
Rainy days
0
Snow days
8°/4°
Temperatures
29 km/h
Avg max wind
87 %
Avg humidity
Lisburn and Castlereagh Weather December
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Temperatures trend during December in Lisburn and Castlereagh
See the weather trend as well as the moving average line
December weather in Lisburn and Castlereagh day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain | 8° /3° | 5.6 mm | 0.4 | |
| 2 Dec. |  Overcast | 5° /1° | 0.2 mm | 0.4 | |
| 3 Dec. | Light rain | 5° /1° | 3.5 mm | 0.3 | |
| 4 Dec. |  Light sleet | 7° /1° | 3.2 mm | 0.3 | |
| 5 Dec. | Light rain | 8° /2° | 8.7 mm | 0.3 | |
| 6 Dec. |  Moderate rain | 9° /4° | 14 mm | 0.3 | |
| 7 Dec. | Moderate rain | 10° /5° | 13.3 mm | 0.3 | |
| 8 Dec. | Light rain | 8° /5° | 2.3 mm | 0.3 | |
| 9 Dec. | Light rain | 10° /4° | 7.3 mm | 0.3 | |
| 10 Dec. | Light rain | 8° /3° | 1.9 mm | 0.3 | |
| 11 Dec. | Light rain | 7° /3° | 4.7 mm | 0.3 | |
| 12 Dec. | Light rain | 7° /3° | 3.6 mm | 0.3 | |
| 13 Dec. |  Patchy rain possible | 6° /3° | 0.6 mm | 0.3 | |
| 14 Dec. | Light rain | 8° /5° | 3.4 mm | 0.3 | |
| 15 Dec. | Patchy rain possible | 9° /6° | 0 mm | 0.3 | |
| 16 Dec. | Overcast | 9° /6° | 0 mm | 0.3 | |
| 17 Dec. | Light rain | 11° /6° | 3.1 mm | 0.3 | |
| 18 Dec. | Light drizzle | 11° /4° | 2 mm | 0.3 | |
| 19 Dec. | Patchy rain possible | 7° /3° | 0.4 mm | 0.3 | |
| 20 Dec. | Light rain | 9° /4° | 5.9 mm | 0.3 | |
| 21 Dec. | Light rain | 10° /5° | 5.1 mm | 0.3 | |
| 22 Dec. | Light rain | 8° /5° | 4.3 mm | 0.3 | |
| 23 Dec. | Light rain | 9° /5° | 3.4 mm | 0.3 | |
| 24 Dec. | Light drizzle | 10° /7° | 1.2 mm | 0.3 | |
| 25 Dec. | Light rain shower | 8° /5° | 1.1 mm | 0.3 | |
| 26 Dec. | Patchy rain possible | 7° /4° | 0.9 mm | 0.3 | |
| 27 Dec. | Moderate rain | 9° /5° | 11.5 mm | 0.3 | |
| 28 Dec. | Light rain shower | 7° /3° | 0.8 mm | 0.3 | |
| 29 Dec. | Light drizzle | 6° /2° | 0.3 mm | 0.3 | |
| 30 Dec. | Moderate rain | 8° /2° | 5.9 mm | 0.3 | |
| 31 Dec. | Light rain | 6° /2° | 1.7 mm | 0.3 | |
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Important Notice
Our weather forecast for Lisburn and Castlereagh 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 Lisburn and Castlereagh forecast closer to your planned date for the most up-to-date weather information.
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Lisburn and Castlereagh in December - FAQ
What are the expected maximum and minimum temperatures in Lisburn and Castlereagh during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 4°.
How much rainfall should be expected in Lisburn and Castlereagh during December?
Significant rainfall exceeding 120.1 mm is expected in Lisburn and Castlereagh during December, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Lisburn and Castlereagh in December 2026?
Lisburn and Castlereagh typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Lisburn and Castlereagh during December?
The average wind speed in Lisburn and Castlereagh during December is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Lisburn and Castlereagh
Explore the daily rainfall trends and prepare for Lisburn and Castlereaghs December weather 💧
Typically, Lisburn and Castlereagh has 17 rainy days in December with a total of 120.1 mm of rainfall.
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