Average annual temperature is 10.4 °C
Absolute maximum temperature: 25.7 °C
Absolute minimum temperature: -3.9 °C
Number of sunny days: 76 days
Number of rainy days: 286 days
Number of snow days: 3 days
Look at detailed online map of Lisburn and Castlereagh
* Weather data for Lisburn and Castlereagh United Kingdom is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.6 | 12.2 | 14.9 | 16.1 | 21.0 | 24.9 | 21.0 | 22.2 | 25.7 | 21.1 | 13.5 | 12.5 |
| Average daytime temperature (°C) | 7.7 | 9.6 | 9.5 | 11.8 | 16.1 | 20.2 | 17.5 | 18.4 | 17.9 | 13.9 | 9.4 | 8.8 |
| Average temperature (°C) | 5.4 | 7.2 | 6.2 | 8.4 | 12.0 | 16.2 | 14.4 | 15.0 | 14.5 | 11.3 | 6.8 | 6.8 |
| Average night temperature (°C) | 3.3 | 4.4 | 3.2 | 4.8 | 7.6 | 12.0 | 11.4 | 11.9 | 11.1 | 8.9 | 3.9 | 4.9 |
| Absolute minimum temperature (°C) | -2.7 | -1.3 | -3.9 | -0.1 | 3.1 | 7.1 | 8.9 | 7.7 | 5.7 | 2.9 | -2.4 | -3.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 15.0 | 16.0 | 17.0 | 17.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 |
| Daylight mean duration (h) | 8.0 | 9.7 | 11.9 | 14.1 | 16.1 | 17.2 | 16.6 | 14.9 | 12.7 | 10.5 | 8.5 | 7.4 |
| Daylight minimum duration (h) | 7.0 | 8.0 | 10.0 | 13.0 | 15.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 |
| Sunshine mean duration (h) | 3.8 | 3.7 | 4.9 | 7.9 | 9.6 | 12.0 | 9.3 | 9.6 | 6.9 | 4.7 | 4.4 | 2.1 |
| Precipitation (mm) | 61 | 25 | 136 | 115 | 64 | 96 | 156 | 107 | 138 | 123 | 71 | 156 |
| Sunny days | 7 | 10 | 4 | 5 | 12 | 11 | 1 | 1 | 6 | 6 | 9 | 4 |
| Rainy days | 23 | 18 | 25 | 25 | 19 | 19 | 30 | 30 | 24 | 25 | 21 | 27 |
| Snow days | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Lisburn and Castlereagh during the most sunny months:
Months with the longest average daylight duration in Lisburn and Castlereagh:
The largest precipitation sum in Lisburn and Castlereagh is at