April is one of the cooler months of the year in Derry, with average highs near 10.2°C and lows around 4.7°C (mean 7.5°C). It is one of the drier months, averaging 78 mm of rainfall and 86% relative humidity across the period.
April is one of the cooler months of the year in Derry. Across 45 years of records, the warmest April in Derry was 2011 — when the month averaged 9.8°C — while the coldest was 1986 at 4.8°C. Typical April days reach 10.2°C with nights near 4.7°C. The long-term trend is warming, about 0.2°C per decade.
April is one of the drier months in Derry, averaging 78 mm of rainfall. The wettest April on record was 1991 with 129 mm, while the driest was 2020 at 26 mm.
Relative humidity in Derry during April averages 86%. The most humid April was 1993 at 89%, and the least humid was 1983 at 83%.
April receives about 3.6 kWh/m²/day of solar energy in Derry. The sunniest April was 2015 at 4.4 kWh/m²/day, and the cloudiest were 1987 and 1992 at 3.
Average wind speed in Derry during April is 4.3 m/s. The windiest April was 1991 at 5.4 m/s, while the calmest were 2007 and 2010 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.0°C | 7.4°C | 7.6°C | 7.5°C | 8.1°C | +1.1°C |
| Avg High | 9.8°C | 9.9°C | 10.2°C | 10.2°C | 11.1°C | +1.3°C |
| Avg Low | 4.2°C | 4.8°C | 4.9°C | 4.7°C | 5.2°C | +1°C |
| Avg Rain | 64 mm | 97 mm | 85 mm | 69 mm | 71 mm | +8 mm |
April temperatures in Derry have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -1.4°C (2013) to a record high of 19.6°C (2025).
Rainfall in April is one of the drier months, averaging 78 mm, with a wettest year of 129 mm.
A good time to visit Derry
April is a good time to visit Derry, with days averaging 10.2°C and nights around 4.7°C (mean 7.5°C, cooler than Derry's yearly average) and moderate rainfall. July and August are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 13.0°C | 9.5°C | 6.1°C | 19.6°C | 3.0°C | 90 mm | 85% | 3.7 m/s | 4.2 |
| 2024 | 10.6°C | 8.0°C | 5.5°C | 15.0°C | 3.1°C | 89 mm | 87% | 4.6 m/s | 3.5 |
| 2023 | 11.1°C | 8.2°C | 5.4°C | 15.3°C | 1.2°C | 99 mm | 87% | 4.2 m/s | 3.6 |
| 2022 | 10.9°C | 8.1°C | 5.2°C | 14.3°C | 1.0°C | 85 mm | 86% | 4.1 m/s | 3.8 |
| 2021 | 9.6°C | 6.6°C | 3.6°C | 14.7°C | 0.6°C | 39 mm | 84% | 3.6 m/s | 4.3 |
| 2020 | 11.5°C | 8.4°C | 5.2°C | 15.8°C | 1.3°C | 26 mm | 86% | 3.7 m/s | 4.3 |
| 2019 | 11.2°C | 8.4°C | 5.6°C | 17.8°C | 1.9°C | 77 mm | 88% | 4.6 m/s | 3.3 |
| 2018 | 9.8°C | 7.4°C | 5.0°C | 15.6°C | 0.2°C | 86 mm | 88% | 4.5 m/s | 3.3 |
| 2017 | 10.2°C | 7.8°C | 5.3°C | 13.4°C | 2.5°C | 44 mm | 86% | 4.4 m/s | 3.3 |
| 2016 | 8.2°C | 5.9°C | 3.5°C | 13.5°C | -0.1°C | 83 mm | 86% | 4.4 m/s | 3.7 |
| 2015 | 10.4°C | 7.3°C | 4.3°C | 14.9°C | 1.1°C | 75 mm | 86% | 3.6 m/s | 4.4 |
| 2014 | 11.8°C | 8.8°C | 5.9°C | 15.4°C | 2.1°C | 50 mm | 87% | 4 m/s | 3.8 |
| 2013 | 8.4°C | 5.8°C | 3.1°C | 13.5°C | -1.4°C | 87 mm | 84% | 5 m/s | 4 |
| 2012 | 8.4°C | 6.0°C | 3.6°C | 12.9°C | 1.0°C | 67 mm | 85% | 4 m/s | 3.7 |
| 2011 🔥 | 13.1°C | 9.8°C | 6.6°C | 16.8°C | 4.1°C | 58 mm | 86% | 3.9 m/s | 4.2 |
| 2010 | 10.6°C | 7.5°C | 4.5°C | 15.9°C | -0.1°C | 64 mm | 86% | 3.5 m/s | 3.9 |
| 2009 | 11.0°C | 8.3°C | 5.6°C | 14.3°C | 3.2°C | 110 mm | 88% | 4.2 m/s | 3.5 |
| 2008 | 9.2°C | 6.7°C | 4.2°C | 14.0°C | 0.9°C | 57 mm | 86% | 4.5 m/s | 3.9 |
| 2007 | 12.7°C | 9.6°C | 6.4°C | 17.0°C | 3.4°C | 44 mm | 87% | 3.5 m/s | 4.1 |
| 2006 | 9.2°C | 6.8°C | 4.3°C | 12.4°C | 0.3°C | 89 mm | 86% | 4.6 m/s | 3.8 |
| 2005 | 10.1°C | 7.6°C | 5.0°C | 13.6°C | 1.9°C | 109 mm | 87% | 4.8 m/s | 3.6 |
| 2004 | 10.3°C | 8.2°C | 6.0°C | 14.4°C | 2.9°C | 89 mm | 88% | 4.9 m/s | 3.5 |
| 2003 | 12.0°C | 8.8°C | 5.5°C | 17.7°C | 0.2°C | 52 mm | 87% | 3.8 m/s | 3.6 |
| 2002 | 10.4°C | 7.6°C | 4.9°C | 15.1°C | 1.3°C | 97 mm | 86% | 4.6 m/s | 3.6 |
| 2001 | 8.9°C | 6.4°C | 3.9°C | 10.9°C | 1.1°C | 81 mm | 88% | 4.2 m/s | 3.1 |
| 2000 | 8.4°C | 5.9°C | 3.5°C | 14.1°C | 0.1°C | 119 mm | 87% | 4.5 m/s | 3.2 |
| 1999 | 10.5°C | 8.0°C | 5.5°C | 14.7°C | 0.4°C | 101 mm | 88% | 5 m/s | 3.5 |
| 1998 | 8.6°C | 6.4°C | 4.2°C | 12.9°C | -1.1°C | 95 mm | 87% | 4.4 m/s | 3.5 |
| 1997 | 11.1°C | 8.4°C | 5.7°C | 15.5°C | 0.7°C | 56 mm | 89% | 3.8 m/s | 3.1 |
| 1996 | 10.3°C | 7.6°C | 4.8°C | 14.2°C | 0.8°C | 103 mm | 88% | 4.5 m/s | 3.2 |
| 1995 | 10.3°C | 7.7°C | 5.1°C | 14.8°C | 1.1°C | 48 mm | 88% | 4.6 m/s | 3.2 |
| 1994 | 9.1°C | 6.6°C | 4.1°C | 14.8°C | 1.4°C | 98 mm | 86% | 5.1 m/s | 3.6 |
| 1993 | 10.6°C | 8.1°C | 5.6°C | 15.3°C | 2.0°C | 126 mm | 89% | 4 m/s | 3.1 |
| 1992 | 9.3°C | 7.0°C | 4.7°C | 13.4°C | 1.0°C | 123 mm | 87% | 5.2 m/s | 3 |
| 1991 🌧️ | 9.4°C | 6.8°C | 4.3°C | 12.2°C | 0.4°C | 129 mm | 87% | 5.4 m/s | 3.4 |
| 1990 | 10.1°C | 7.2°C | 4.3°C | 18.2°C | 0.8°C | 87 mm | 85% | 4.7 m/s | 3.8 |
| 1989 | 7.9°C | 5.4°C | 2.9°C | 12.0°C | -0.7°C | 105 mm | 86% | 3.8 m/s | 3.3 |
| 1988 | 11.1°C | 8.3°C | 5.4°C | 14.5°C | 2.0°C | 43 mm | 86% | 3.7 m/s | 3.6 |
| 1987 | 11.4°C | 8.4°C | 5.5°C | 18.6°C | 0.5°C | 54 mm | 88% | 3.9 m/s | 3 |
| 1986 ❄️ | 7.2°C | 4.8°C | 2.4°C | 13.1°C | -0.1°C | 92 mm | 85% | 4.3 m/s | 3.5 |
| 1985 | 10.1°C | 7.3°C | 4.6°C | 14.8°C | 1.8°C | 92 mm | 87% | 4.9 m/s | 3.5 |
| 1984 | 11.0°C | 7.8°C | 4.6°C | 19.0°C | -0.3°C | 54 mm | 85% | 4.4 m/s | 3.9 |
| 1983 | 7.8°C | 5.3°C | 2.7°C | 10.7°C | -0.6°C | 61 mm | 83% | 3.6 m/s | — |
| 1982 | 11.0°C | 7.9°C | 4.8°C | 14.5°C | 1.5°C | 31 mm | 86% | 3.9 m/s | — |
| 1981 | 10.7°C | 7.6°C | 4.5°C | 15.1°C | 0.3°C | 43 mm | 85% | 3.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 10.2°C with lows near 4.7°C (mean 7.5°C), based on 45 years of NASA POWER data.
April averages 78 mm of rainfall in Derry, one of the drier months. The wettest on record was 129 mm in 1991.
The hottest April reached 19.6°C in 2025. The coldest dipped to -1.4°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.9°C. Daytime highs moved from 10.1°C to 11°C and overnight lows from 4.2°C to 5.2°C over the same span.
April is one of the cooler months of the year in Derry and one of the drier months, so plan for around 10.2°C daytime highs and 4.7°C at night.
Not quite — April is the 6th coolest month in Derry, averaging 7.5°C.
For April in Derry, pack warm layers and a jacket for chilly mornings, with typical highs of 10.2°C and lows of 4.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 86% — quite humid.
Average wind speed in April is 4.3 m/s. The windiest April on record averaged 5.4 m/s (1991).
The wettest April on record was 1991 with 129 mm. On average, April sees 78 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Derry behaves each April, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for April specifically, along with year-by-year records and how the month has changed over the decades.
