Derry Climate: Weather by Month and Best Time to Visit
Best months for Derry: September, June, July, August.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 7°C | 3°C | 87 mm | 17 | – | – | 4.5 |
| February | 8°C | 3°C | 76 mm | 15 | – | – | 4.7 |
| March | 9°C | 4°C | 75 mm | 16 | – | – | 4.9 |
| April | 11°C | 5°C | 74 mm | 15 | – | – | 5.3 |
| May | 14°C | 7°C | 78 mm | 15 | – | – | 5.8 |
| June | 16°C | 10°C | 87 mm | 16 | – | – | 6.0 |
| July | 17°C | 12°C | 93 mm | 17 | – | – | 6.0 |
| August | 17°C | 11°C | 94 mm | 17 | – | – | 6.0 |
| September | 16°C | 10°C | 75 mm | 14 | – | – | 6.2 |
| October | 13°C | 8°C | 88 mm | 16 | – | – | 5.4 |
| November | 10°C | 5°C | 90 mm | 17 | – | – | 4.8 |
| December | 7°C | 3°C | 90 mm | 16 | – | – | 4.6 |