Lisburn and Castlereagh (Lisburn)
December
Weather in Lisburn and Castlereagh for December 2025
Your guide to Lisburn and Castlereagh weather in December - trends and predictions
So far, December 2025 in Lisburn and Castlereagh is slightly warmer than the historical average by 0.7 °C.
Expect cooler weather in the next days in Lisburn and Castlereagh with the forecast suggesting a temperature of 6.7 °C, lower than the historical average.
In general, the average temperature in Lisburn and Castlereagh at the beginning of December is 7.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 5.7 °C by the end of December.
Lisburn and Castlereagh experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 114.1 mm.
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Temperatures
Rain 🌧️
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7
Dry days
24
Rainy days
0
Snow days
8°/4°
Temperatures
30 km/h
Avg max wind
86 %
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. |  Partly cloudy | 8° /3° | 5.6 mm | 2 | |
| 2 Dec. |  Overcast | 5° /1° | 0.2 mm | 2 | |
| 3 Dec. |  Light rain shower | 5° /1° | 3.5 mm | 2 | |
| 4 Dec. |  Light sleet | 7° /1° | 3.2 mm | 2 | |
| 5 Dec. | Light rain shower | 8° /2° | 8.7 mm | 2 | |
| 6 Dec. |  Moderate rain | 9° /3° | 14 mm | 2 | |
| 7 Dec. | Light rain shower | 10° /5° | 13.3 mm | 3 | |
| 8 Dec. |  Light rain | 8° /5° | 2.3 mm | 2 | |
| 9 Dec. | Light rain | 10° /4° | 7.3 mm | 3 | |
| 10 Dec. | Light rain | 8° /3° | 1.9 mm | 2 | |
| 11 Dec. |  Mist | 8° /3° | 4.7 mm | 2 | |
| 12 Dec. | Light rain shower | 7° /2° | 3.6 mm | 2 | |
| 13 Dec. | Patchy rain possible | 6° /2° | 0.6 mm | 2 | |
| 14 Dec. | Overcast | 9° /4° | 3.4 mm | 2 | |
| 15 Dec. | Patchy rain possible | 10° /6° | 0 mm | 3 | |
| 16 Dec. | Overcast | 9° /5° | 0 mm | 3 | |
| 17 Dec. | Moderate rain | 10° /2° | 7.3 mm | 0 | |
| 18 Dec. | Patchy rain possible | 9° /3° | 4 mm | 0 | |
| 19 Dec. | Patchy rain possible | 7° /5° | 0.2 mm | 0.1 | |
| 20 Dec. | Moderate rain | 9° /4° | 10.9 mm | 0 | |
| 21 Dec. | Moderate rain | 8° /3° | 7.2 mm | 0 | |
| 22 Dec. | Partly cloudy | 6° /2° | 0 mm | 2 | |
| 23 Dec. | Partly cloudy | 5° /2° | 0 mm | 2 | |
| 24 Dec. | Overcast | 8° /3° | 0 mm | 2 | |
| 25 Dec. | Partly cloudy | 6° /3° | 0 mm | 2 | |
| 26 Dec. | Patchy rain possible | 5° /1° | 0.1 mm | 1 | |
| 27 Dec. | Partly cloudy | 4° /1° | 0 mm | 2 | |
| 28 Dec. |  Sunny | 4° /0° | 0 mm | 2 | |
| 29 Dec. | Patchy rain possible | 6° /5° | 0.3 mm | 2 | |
| 30 Dec. | Patchy rain possible | 7° /5° | 0.3 mm | 2 | |
| 31 Dec. | Light rain | 8° /3° | 2.6 mm | 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 114.1 mm is expected in Lisburn and Castlereagh during December, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Lisburn and Castlereagh in December 2025?
Lisburn and Castlereagh typically sees 0.045 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 30 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 24 rainy days in December with a total of 114.1 mm of rainfall.
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