May is one of the warmer months of the year in Burnham-on-Sea, with average highs near 15.6°C and lows around 7.2°C (mean 11.4°C). It is one of the drier months, averaging 64 mm of rainfall and 83% relative humidity across the period.
May is one of the warmer months of the year in Burnham-on-Sea. Across 45 years of records, the warmest May in Burnham-on-Sea was 1989 — when the month averaged 13.3°C — while the coldest was 1996 at 8.7°C. Typical May days reach 15.6°C with nights near 7.2°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Burnham-on-Sea, averaging 64 mm of rainfall. The wettest May on record was 2021 with 132 mm, while the driest was 2020 at 10 mm.
Relative humidity in Burnham-on-Sea during May averages 83%. The most humid May was 1981 at 88%, and the least humid was 2020 at 78%.
May receives about 5 kWh/m²/day of solar energy in Burnham-on-Sea. The sunniest May was 2020 at 6.4 kWh/m²/day, and the cloudiest was 1993 at 4.2.
Average wind speed in Burnham-on-Sea during May is 3.2 m/s. The windiest Mays were 1986 and 2011 at 4.2 m/s, while the calmest was 2018 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.7°C | 11.4°C | 11.6°C | 11.4°C | 12.1°C | +1.4°C |
| Avg High | 14.8°C | 15.7°C | 15.7°C | 15.5°C | 16.5°C | +1.7°C |
| Avg Low | 6.7°C | 7.1°C | 7.6°C | 7.2°C | 7.7°C | +1°C |
| Avg Rain | 63 mm | 54 mm | 78 mm | 59 mm | 69 mm | +6 mm |
May temperatures in Burnham-on-Sea have risen by about 1.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 0.3°C (1982) to a record high of 24.7°C (1989).
Rainfall in May is one of the drier months, averaging 64 mm, with a wettest year of 132 mm.
A good time to visit Burnham-on-Sea
May is a good time to visit Burnham-on-Sea, with days averaging 15.6°C and nights around 7.2°C (mean 11.4°C, warmer than Burnham-on-Sea's yearly average) and moderate rainfall. July and August are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 17.8°C | 13.0°C | 8.1°C | 20.7°C | 2.2°C | 35 mm | 81% | 2.9 m/s | 5.8 |
| 2024 | 16.9°C | 13.0°C | 9.0°C | 21.9°C | 5.7°C | 109 mm | 86% | 2.7 m/s | 4.8 |
| 2023 | 17.1°C | 12.4°C | 7.8°C | 20.6°C | 4.2°C | 63 mm | 84% | 3 m/s | 5.8 |
| 2022 | 16.6°C | 12.4°C | 8.1°C | 19.7°C | 6.3°C | 66 mm | 84% | 2.8 m/s | 5 |
| 2021 🌧️ | 13.4°C | 9.9°C | 6.4°C | 20.3°C | 2.0°C | 132 mm | 83% | 3.7 m/s | 4.7 |
| 2020 | 17.2°C | 12.0°C | 6.8°C | 22.9°C | 0.5°C | 10 mm | 78% | 3.1 m/s | 6.4 |
| 2019 | 15.6°C | 11.1°C | 6.7°C | 19.4°C | 1.2°C | 37 mm | 82% | 2.8 m/s | 5.1 |
| 2018 | 17.3°C | 12.6°C | 7.9°C | 22.7°C | 2.0°C | 45 mm | 83% | 2.4 m/s | 5.4 |
| 2017 | 16.7°C | 12.4°C | 8.1°C | 22.5°C | 3.8°C | 65 mm | 84% | 3.2 m/s | 5 |
| 2016 | 16.2°C | 11.9°C | 7.5°C | 19.9°C | 2.6°C | 60 mm | 84% | 2.9 m/s | 5.2 |
| 2015 | 14.5°C | 10.8°C | 7.1°C | 19.0°C | 4.5°C | 86 mm | 83% | 3.9 m/s | 4.9 |
| 2014 | 15.3°C | 11.7°C | 8.1°C | 20.2°C | 4.1°C | 100 mm | 85% | 3.1 m/s | 4.6 |
| 2013 | 13.8°C | 9.8°C | 5.7°C | 18.8°C | 1.4°C | 64 mm | 83% | 3.7 m/s | 4.9 |
| 2012 | 15.8°C | 11.5°C | 7.3°C | 23.7°C | 2.9°C | 46 mm | 84% | 3 m/s | 5.1 |
| 2011 | 15.3°C | 11.4°C | 7.6°C | 18.6°C | 2.8°C | 49 mm | 82% | 4.2 m/s | 4.9 |
| 2010 | 14.9°C | 10.6°C | 6.2°C | 22.9°C | 1.2°C | 35 mm | 82% | 2.6 m/s | 5.1 |
| 2009 | 15.7°C | 11.6°C | 7.5°C | 21.7°C | 4.3°C | 44 mm | 83% | 3.8 m/s | 5.1 |
| 2008 | 17.2°C | 13.0°C | 8.7°C | 23.3°C | 3.9°C | 114 mm | 85% | 3 m/s | 4.6 |
| 2007 | 15.7°C | 11.8°C | 7.9°C | 21.5°C | 3.7°C | 120 mm | 84% | 3.8 m/s | 4.9 |
| 2006 | 15.3°C | 11.6°C | 8.0°C | 19.5°C | 4.3°C | 110 mm | 85% | 3.7 m/s | 4.6 |
| 2005 | 14.6°C | 10.6°C | 6.7°C | 21.4°C | 2.1°C | 42 mm | 83% | 3.7 m/s | 5.3 |
| 2004 | 16.3°C | 12.1°C | 7.9°C | 20.9°C | 3.3°C | 42 mm | 83% | 2.5 m/s | 5 |
| 2003 | 14.9°C | 11.1°C | 7.4°C | 22.8°C | 3.9°C | 70 mm | 84% | 3.6 m/s | 4.6 |
| 2002 | 14.9°C | 11.2°C | 7.6°C | 20.3°C | 3.7°C | 113 mm | 84% | 3.9 m/s | 4.5 |
| 2001 | 16.5°C | 11.8°C | 7.0°C | 21.6°C | 1.7°C | 31 mm | 83% | 2.9 m/s | 5.1 |
| 2000 | 15.6°C | 11.6°C | 7.7°C | 20.9°C | 4.7°C | 89 mm | 86% | 3.4 m/s | 4.8 |
| 1999 | 16.3°C | 12.4°C | 8.5°C | 20.6°C | 5.8°C | 63 mm | 85% | 3.4 m/s | 4.3 |
| 1998 | 17.2°C | 13.0°C | 8.8°C | 22.8°C | 2.7°C | 37 mm | 83% | 3 m/s | 6.2 |
| 1997 | 15.6°C | 11.1°C | 6.7°C | 21.3°C | 1.9°C | 67 mm | 83% | 3.3 m/s | 5 |
| 1996 ❄️ | 12.9°C | 8.7°C | 4.6°C | 17.5°C | 0.8°C | 83 mm | 81% | 3.8 m/s | 4.5 |
| 1995 | 15.1°C | 10.9°C | 6.6°C | 22.4°C | 1.6°C | 47 mm | 81% | 3.1 m/s | 5 |
| 1994 | 14.1°C | 10.3°C | 6.5°C | 18.4°C | 3.0°C | 101 mm | 84% | 3.1 m/s | 4.6 |
| 1993 | 15.1°C | 11.0°C | 6.9°C | 21.5°C | 1.7°C | 81 mm | 84% | 3.9 m/s | 4.2 |
| 1992 | 17.7°C | 12.7°C | 7.7°C | 23.8°C | 2.6°C | 27 mm | 80% | 3.1 m/s | 5.8 |
| 1991 | 15.6°C | 11.1°C | 6.6°C | 20.6°C | 1.7°C | 13 mm | 81% | 2.9 m/s | 4.6 |
| 1990 | 17.6°C | 12.6°C | 7.6°C | 23.6°C | 4.5°C | 19 mm | 79% | 2.6 m/s | 5.5 |
| 1989 🔥 | 18.3°C | 13.3°C | 8.3°C | 24.7°C | 4.8°C | 12 mm | 80% | 2.6 m/s | 5.6 |
| 1988 | 15.6°C | 11.5°C | 7.4°C | 21.0°C | 3.9°C | 61 mm | 83% | 3.2 m/s | 5 |
| 1987 | 14.4°C | 10.0°C | 5.7°C | 19.6°C | 1.8°C | 37 mm | 82% | 3.5 m/s | 4.5 |
| 1986 | 13.9°C | 10.2°C | 6.5°C | 17.5°C | 2.8°C | 86 mm | 84% | 4.2 m/s | 4.5 |
| 1985 | 14.8°C | 10.7°C | 6.6°C | 19.3°C | 2.2°C | 51 mm | 83% | 3.1 m/s | 4.6 |
| 1984 | 14.1°C | 9.9°C | 5.7°C | 20.3°C | 1.1°C | 66 mm | 81% | 3.1 m/s | 4.7 |
| 1983 | 13.0°C | 9.6°C | 6.2°C | 17.9°C | 4.2°C | 106 mm | 86% | 3.3 m/s | — |
| 1982 | 15.0°C | 10.7°C | 6.4°C | 21.6°C | 0.3°C | 33 mm | 82% | 3 m/s | — |
| 1981 | 13.9°C | 10.5°C | 7.1°C | 19.4°C | 2.1°C | 117 mm | 88% | 3.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.6°C with lows near 7.2°C (mean 11.4°C), based on 45 years of NASA POWER data.
May averages 64 mm of rainfall in Burnham-on-Sea, one of the drier months. The wettest on record was 132 mm in 2021.
The hottest May reached 24.7°C in 1989. The coldest dipped to 0.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.8°C. Daytime highs moved from 14.2°C to 16.4°C and overnight lows from 6.4°C to 7.9°C over the same span.
May is one of the warmer months of the year in Burnham-on-Sea and one of the drier months, so plan for around 15.6°C daytime highs and 7.2°C at night.
Not quite — May is the 8th coolest month in Burnham-on-Sea, averaging 11.4°C.
For May in Burnham-on-Sea, pack warm layers and a jacket for chilly mornings, with typical highs of 15.6°C and lows of 7.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 83% — quite humid.
Average wind speed in May is 3.2 m/s. The windiest May on record averaged 4.2 m/s (1986).
The wettest May on record was 2021 with 132 mm. On average, May sees 64 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 Burnham-on-Sea behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
