Derry Climate: Weather by Month and Best Time to Visit
Best months for Derry: September, August, July, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 1°C | -8°C | 79 mm | 9 | – | – | 3.9 |
| February | 2°C | -7°C | 76 mm | 9 | – | – | 4.2 |
| March | 7°C | -3°C | 101 mm | 10 | – | – | 4.9 |
| April | 14°C | 3°C | 96 mm | 10 | – | – | 6.3 |
| May | 20°C | 9°C | 77 mm | 11 | – | – | 7.3 |
| June | 25°C | 14°C | 89 mm | 11 | – | – | 7.6 |
| July | 28°C | 18°C | 83 mm | 10 | – | – | 7.7 |
| August | 27°C | 17°C | 82 mm | 9 | – | – | 7.8 |
| September | 23°C | 13°C | 84 mm | 8 | – | – | 8.0 |
| October | 16°C | 6°C | 98 mm | 10 | – | – | 6.8 |
| November | 9°C | 1°C | 86 mm | 9 | – | – | 5.7 |
| December | 4°C | -4°C | 104 mm | 10 | – | – | 4.2 |