Belfast Climate: Weather by Month and Best Time to Visit
Best months for Belfast: August, September, May, April.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 24°C | 14°C | 140 mm | 17 | – | – | 6.6 |
| February | 24°C | 13°C | 102 mm | 13 | – | – | 7.3 |
| March | 23°C | 12°C | 97 mm | 12 | – | – | 7.5 |
| April | 21°C | 9°C | 47 mm | 7 | – | – | 8.1 |
| May | 19°C | 6°C | 13 mm | 2 | – | – | 8.3 |
| June | 17°C | 3°C | 5 mm | 1 | – | – | 8.1 |
| July | 17°C | 2°C | 6 mm | 1 | – | – | 8.1 |
| August | 20°C | 5°C | 11 mm | 2 | – | – | 8.5 |
| September | 23°C | 8°C | 22 mm | 4 | – | – | 8.5 |
| October | 23°C | 10°C | 77 mm | 12 | – | – | 7.5 |
| November | 23°C | 12°C | 122 mm | 15 | – | – | 6.8 |
| December | 24°C | 13°C | 155 mm | 18 | – | – | 6.3 |