United Kingdom
Derry sees feels-like daytime highs peak around 19.6°C in July and nighttime lows bottom out near 1.7°C in February. October is the wettest month (~92 mm), while April is the driest (~54 mm). For sunshine, May leads with about 44% clear skies.
Based on mild feels-like temperatures and low rain chances, the most comfortable months are July, August, and June — expect around 12.7–19.6°C with roughly 38% chance of rain on a given day in July.
| Month | Low / High °C | Rain % | Rainfall | Clear skies | Wind |
|---|---|---|---|---|---|
| January | 2.3° / 5.9° | 49% | 89 mm | 28% | 27.3 kph |
| February | 1.7° / 6.2° | 40% | 70 mm | 30% | 26.2 kph |
| March | 2.9° / 8.2° | 40% | 65 mm | 32% | 24.6 kph |
| April | 5.3° / 10.8° | 35% | 54 mm | 39% | 21.5 kph |
| May | 7.8° / 14.3° | 33% | 55 mm | 44% | 19.8 kph |
| June☀ | 10.4° / 17.1° | 34% | 57 mm | 43% | 18.9 kph |
| July☀ | 12.7° / 19.6° | 38% | 65 mm | 44% | 18.4 kph |
| August☀ | 12.7° / 18.6° | 41% | 76 mm | 44% | 19.3 kph |
| September | 11° / 15.8° | 39% | 77 mm | 42% | 21.6 kph |
| October | 7.6° / 12.1° | 45% | 92 mm | 36% | 23.4 kph |
| November | 4.7° / 8.5° | 46% | 91 mm | 31% | 24.7 kph |
| December | 2.7° / 6.3° | 49% | 91 mm | 29% | 26 kph |
Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).
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