April is one of the cooler months of the year in Chesham, with average highs near 13.1°C and lows around 3.8°C (mean 8.5°C). It is one of the drier months, averaging 50 mm of rainfall and 83% relative humidity across the period.
April is one of the cooler months of the year in Chesham. Across 45 years of records, the warmest April in Chesham was 2011 — when the month averaged 11.8°C — while the coldest was 1986 at 5.3°C. Typical April days reach 13.1°C with nights near 3.8°C. The long-term trend is warming, about 0.4°C per decade.
April is one of the drier months in Chesham, averaging 50 mm of rainfall. The wettest April on record was 2000 with 134 mm, while the driest was 2007 at 3 mm.
Relative humidity in Chesham during April averages 83%. The most humid April was 1998 at 88%, and the least humid was 1997 at 77%.
April receives about 3.9 kWh/m²/day of solar energy in Chesham. The sunniest April was 2025 at 4.9 kWh/m²/day, and the cloudiest were 1993 and 1998 at 3.2.
Average wind speed in Chesham during April is 3.2 m/s. The windiest April was 1994 at 4.1 m/s, while the calmest were 2009 and 2021 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.5°C | 8.2°C | 8.9°C | 8.8°C | 8.9°C | +1.4°C |
| Avg High | 12.0°C | 12.7°C | 13.5°C | 13.6°C | 14.0°C | +2°C |
| Avg Low | 2.9°C | 3.8°C | 4.4°C | 4.1°C | 3.8°C | +0.9°C |
| Avg Rain | 52 mm | 54 mm | 55 mm | 43 mm | 39 mm | -13 mm |
April temperatures in Chesham have risen by about 1.1°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -4.4°C (1996) to a record high of 24.6°C (2018).
Rainfall in April is one of the drier months, averaging 50 mm, with a wettest year of 134 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Chesham
April is a good time to visit Chesham, with days averaging 13.1°C and nights around 3.8°C (mean 8.5°C, cooler than Chesham'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 | 16.3°C | 10.6°C | 4.9°C | 23.2°C | 1.4°C | 31 mm | 79% | 2.8 m/s | 4.9 |
| 2024 | 13.2°C | 9.3°C | 5.3°C | 18.6°C | 0.8°C | 67 mm | 85% | 4 m/s | 3.8 |
| 2023 | 13.1°C | 8.4°C | 3.7°C | 17.7°C | -1.9°C | 66 mm | 84% | 3 m/s | 3.9 |
| 2022 | 14.4°C | 9.2°C | 4.1°C | 20.5°C | -3.1°C | 17 mm | 79% | 3.3 m/s | 4.3 |
| 2021 | 11.1°C | 5.8°C | 0.5°C | 15.4°C | -3.1°C | 11 mm | 79% | 2.6 m/s | 4.6 |
| 2020 | 15.7°C | 10.0°C | 4.2°C | 22.0°C | -1.8°C | 42 mm | 81% | 2.8 m/s | 4.8 |
| 2019 | 14.3°C | 9.0°C | 3.8°C | 21.7°C | -2.3°C | 22 mm | 81% | 2.9 m/s | 4 |
| 2018 | 13.6°C | 9.8°C | 6.0°C | 24.6°C | 0.4°C | 80 mm | 88% | 3.3 m/s | 3.3 |
| 2017 | 13.9°C | 8.9°C | 3.9°C | 20.6°C | -1.4°C | 15 mm | 80% | 2.7 m/s | 4.3 |
| 2016 | 11.5°C | 7.1°C | 2.7°C | 15.4°C | -1.2°C | 54 mm | 83% | 3 m/s | 4.1 |
| 2015 | 14.3°C | 9.0°C | 3.6°C | 21.1°C | 0.4°C | 25 mm | 81% | 2.9 m/s | 4.7 |
| 2014 | 14.7°C | 10.1°C | 5.5°C | 17.4°C | 0.4°C | 50 mm | 85% | 2.9 m/s | 3.8 |
| 2013 | 11.0°C | 6.7°C | 2.4°C | 18.9°C | -3.0°C | 38 mm | 84% | 3.7 m/s | 4.1 |
| 2012 | 11.6°C | 7.3°C | 3.1°C | 16.7°C | -3.3°C | 120 mm | 82% | 3.4 m/s | 3.6 |
| 2011 🔥 | 17.4°C | 11.8°C | 6.2°C | 24.0°C | 2.9°C | 7 mm | 80% | 2.8 m/s | 4.6 |
| 2010 | 13.8°C | 8.7°C | 3.7°C | 18.5°C | -0.5°C | 22 mm | 81% | 2.8 m/s | 4.5 |
| 2009 | 15.0°C | 10.1°C | 5.3°C | 19.3°C | 2.2°C | 41 mm | 83% | 2.6 m/s | 4.1 |
| 2008 | 12.1°C | 7.9°C | 3.7°C | 17.7°C | -2.2°C | 55 mm | 83% | 3.3 m/s | 3.9 |
| 2007 | 17.1°C | 11.4°C | 5.7°C | 22.3°C | 1.1°C | 3 mm | 81% | 2.7 m/s | 4.7 |
| 2006 | 12.7°C | 8.5°C | 4.4°C | 16.9°C | -2.9°C | 36 mm | 83% | 3.1 m/s | 3.7 |
| 2005 | 13.5°C | 9.0°C | 4.6°C | 20.1°C | -2.2°C | 47 mm | 83% | 3 m/s | 3.7 |
| 2004 | 13.5°C | 9.2°C | 4.8°C | 20.1°C | 0.4°C | 77 mm | 84% | 2.9 m/s | 3.6 |
| 2003 | 13.9°C | 8.8°C | 3.7°C | 23.1°C | -3.2°C | 35 mm | 83% | 3.3 m/s | 3.9 |
| 2002 | 14.0°C | 9.2°C | 4.3°C | 20.5°C | 0.6°C | 40 mm | 81% | 3.5 m/s | 4.3 |
| 2001 | 11.0°C | 7.2°C | 3.4°C | 16.8°C | -1.1°C | 81 mm | 87% | 3.5 m/s | 3.3 |
| 2000 🌧️ | 11.7°C | 7.8°C | 4.0°C | 16.6°C | -2.7°C | 134 mm | 87% | 3.4 m/s | 3.3 |
| 1999 | 13.1°C | 9.0°C | 4.8°C | 18.8°C | -0.9°C | 55 mm | 85% | 3.3 m/s | 3.6 |
| 1998 | 10.8°C | 7.6°C | 4.4°C | 18.4°C | -1.0°C | 109 mm | 88% | 3.4 m/s | 3.2 |
| 1997 | 14.3°C | 8.7°C | 3.1°C | 18.7°C | -1.8°C | 17 mm | 77% | 2.9 m/s | 4.2 |
| 1996 | 12.7°C | 7.9°C | 3.2°C | 18.5°C | -4.4°C | 32 mm | 83% | 2.7 m/s | 3.7 |
| 1995 | 13.6°C | 8.8°C | 4.0°C | 18.9°C | -2.4°C | 26 mm | 83% | 3.1 m/s | 3.9 |
| 1994 | 11.5°C | 7.3°C | 3.2°C | 20.4°C | 0.0°C | 63 mm | 85% | 4.1 m/s | 3.8 |
| 1993 | 13.3°C | 9.1°C | 4.9°C | 22.3°C | 1.0°C | 88 mm | 87% | 3.4 m/s | 3.2 |
| 1992 | 12.8°C | 8.4°C | 4.1°C | 18.6°C | -0.7°C | 53 mm | 81% | 3.7 m/s | 3.4 |
| 1991 | 12.3°C | 7.9°C | 3.5°C | 19.1°C | -1.5°C | 61 mm | 81% | 4 m/s | 3.7 |
| 1990 | 12.7°C | 7.7°C | 2.6°C | 21.2°C | -3.7°C | 38 mm | 80% | 3.5 m/s | 4.4 |
| 1989 | 10.4°C | 6.3°C | 2.2°C | 15.5°C | -2.2°C | 75 mm | 83% | 3.3 m/s | 3.3 |
| 1988 | 12.6°C | 7.7°C | 2.9°C | 18.5°C | -2.6°C | 36 mm | 84% | 3.1 m/s | 3.7 |
| 1987 | 14.6°C | 9.9°C | 5.2°C | 20.2°C | 0.7°C | 59 mm | 85% | 3 m/s | 3.6 |
| 1986 ❄️ | 9.2°C | 5.3°C | 1.4°C | 15.4°C | -2.1°C | 69 mm | 85% | 3.5 m/s | 3.4 |
| 1985 | 12.3°C | 7.9°C | 3.6°C | 18.4°C | -1.8°C | 48 mm | 84% | 4 m/s | 3.6 |
| 1984 | 13.0°C | 7.4°C | 1.9°C | 20.1°C | -3.8°C | 8 mm | 80% | 2.8 m/s | 4.5 |
| 1983 | 10.7°C | 6.6°C | 2.6°C | 15.9°C | -1.7°C | 97 mm | 86% | 3.4 m/s | — |
| 1982 | 13.0°C | 8.2°C | 3.4°C | 16.3°C | -2.5°C | 25 mm | 82% | 3 m/s | — |
| 1981 | 12.5°C | 7.9°C | 3.2°C | 19.3°C | -1.0°C | 51 mm | 83% | 3.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 13.1°C with lows near 3.8°C (mean 8.5°C), based on 45 years of NASA POWER data.
April averages 50 mm of rainfall in Chesham, one of the drier months. The wettest on record was 134 mm in 2000.
The hottest April reached 24.6°C in 2018. The coldest dipped to -4.4°C in 1996.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.1°C. Daytime highs moved from 12.3°C to 13.6°C and overnight lows from 2.9°C to 3.7°C over the same span.
April is one of the cooler months of the year in Chesham and one of the drier months, so plan for around 13.1°C daytime highs and 3.8°C at night.
Not quite — April is the 6th coolest month in Chesham, averaging 8.5°C.
For April in Chesham, pack warm layers and a jacket for chilly mornings, with typical highs of 13.1°C and lows of 3.8°C.
Relative humidity in April averages 83% — quite humid.
Average wind speed in April is 3.2 m/s. The windiest April on record averaged 4.1 m/s (1994).
The wettest April on record was 2000 with 134 mm. On average, April sees 50 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 Chesham 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.
