Climate averages 1991–2020
Derry weather
in April.
A cool, moderately wet month: the 7th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Derry: daytime highs average 11.1°C and nights cool to about 5.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 74 mm of rain on roughly 15 days, which makes April a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 04 min on an average April day.
The nearest other city in this atlas is Lisburn (97 km away). In April its highs average 11.0°C, about as warm as Derry, with 65 mm of rain.
Among the 143 cities listed in the United Kingdom, Derry ranks joint 123rd of 143 for the warmest April highs and joint 138th of 143 for the driest April (rainfall, lowest first). The mean April high of those 143 cities is 12.2°C; Derry is 1.1°C cooler than that mean.
From April to May, average highs rise by 2.7°C to 13.8°C, and monthly rainfall rises from 74 mm to 78 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Derry climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C3.0°C | 3.0°C | 87 | 16.4 | 7.88 h |
| February | 7.5°C3.0°C | 3.0°C | 76 | 15.1 | 9.610 h |
| March | 9.0°C3.7°C | 3.7°C | 75 | 15.6 | 11.812 h |
| April, selected | 11.1°C5.1°C | 5.1°C | 74 | 15.4 | 14.114 h |
| May | 13.8°C7.6°C | 7.6°C | 78 | 15.1 | 16.116 h |
| June | 15.9°C10.2°C | 10.2°C | 87 | 15.5 | 17.317 h |
| July | 17.3°C11.9°C | 11.9°C | 93 | 16.8 | 16.817 h |
| August | 17.1°C11.9°C | 11.9°C | 94 | 16.7 | 15.015 h |
| September | 15.4°C10.4°C | 10.4°C | 75 | 14.2 | 12.813 h |
| October | 12.3°C8.0°C | 8.0°C | 88 | 15.5 | 10.511 h |
| November | 9.3°C5.4°C | 5.4°C | 90 | 16.6 | 8.58 h |
| December | 7.4°C3.4°C | 3.4°C | 90 | 15.8 | 7.37 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Lisburn in AprilUnited Kingdom · 97 kmHigh 11.0°C · Low 5.3°C · 65 mm rain
- Belfast in AprilUnited Kingdom · 99 kmHigh 10.9°C · Low 5.9°C · 65 mm rain
- Dublin in AprilIreland · 198 kmHigh 11.9°C · Low 5.6°C · 66 mm rain
- Tallaght in AprilIreland · 200 kmHigh 11.6°C · Low 5.2°C · 66 mm rain
- Paisley in AprilUnited Kingdom · 204 kmHigh 10.8°C · Low 3.9°C · 77 mm rain
- Douglas in AprilIsle of Man · 205 kmHigh 9.4°C · Low 7.1°C · 59 mm rain
- Glasgow in AprilUnited Kingdom · 215 kmHigh 10.7°C · Low 3.6°C · 74 mm rain
- East Kilbride in AprilUnited Kingdom · 215 kmHigh 10.1°C · Low 3.0°C · 74 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Derry) is explained once on the Derry year overview and on the Sources, method and limits page.