May is one of the warmer months of the year in Meriden, with average highs near 19.3°C and lows around 8.7°C (mean 14°C). It is about average for rainfall, averaging 97 mm of rainfall and 78% relative humidity across the period.
May is one of the warmer months of the year in Meriden. Across 45 years of records, the warmest May in Meriden was 2012 — when the month averaged 16.3°C — while the coldest was 2005 at 11.5°C. Typical May days reach 19.3°C with nights near 8.7°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Meriden, averaging 97 mm of rainfall. The wettest May on record was 1984 with 228 mm, while the driest was 2015 at 36 mm.
Relative humidity in Meriden during May averages 78%. The most humid May was 1983 at 84%, and the least humid was 2023 at 71%.
May receives about 5.5 kWh/m²/day of solar energy in Meriden. The sunniest May was 2023 at 6.8 kWh/m²/day, and the cloudiest was 1984 at 4.2.
Average wind speed in Meriden during May is 0.4 m/s. The windiest Mays were 2017, 2020 and 2023, among others at 0.5 m/s, while the calmest were 1982 and 2018 at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 13.4°C | 13.6°C | 14.9°C | 14.4°C | +0.7°C |
| Avg High | 19.0°C | 18.9°C | 18.9°C | 20.0°C | 19.6°C | +0.6°C |
| Avg Low | 8.3°C | 8.0°C | 8.4°C | 9.7°C | 9.2°C | +0.9°C |
| Avg Rain | 110 mm | 89 mm | 93 mm | 88 mm | 110 mm | +1 mm |
May temperatures in Meriden have risen by about 1.2°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -0.3°C (1992) to a record high of 31.9°C (2022).
Rainfall in May is about average for rainfall, averaging 97 mm, with a wettest year of 228 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Meriden
May is a good time to visit Meriden, with days averaging 19.3°C and nights around 8.7°C (mean 14°C, warmer than Meriden's yearly average) and higher rainfall. August and July 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 | 19.2°C | 14.6°C | 10.0°C | 24.9°C | 5.2°C | 192 mm | 82% | 0.4 m/s | 4.7 |
| 2024 | 20.5°C | 15.6°C | 10.7°C | 25.2°C | 4.3°C | 140 mm | 82% | 0.4 m/s | 5.4 |
| 2023 | 19.6°C | 13.9°C | 8.2°C | 26.3°C | 1.5°C | 64 mm | 71% | 0.5 m/s | 6.8 |
| 2022 | 20.5°C | 15.2°C | 9.8°C | 31.9°C | 2.5°C | 69 mm | 77% | 0.4 m/s | 5.8 |
| 2021 | 19.6°C | 14.3°C | 9.1°C | 28.1°C | 3.4°C | 138 mm | 74% | 0.4 m/s | 5.8 |
| 2020 | 18.3°C | 12.9°C | 7.5°C | 25.0°C | 0.9°C | 61 mm | 75% | 0.5 m/s | 6.3 |
| 2019 | 18.5°C | 13.8°C | 9.1°C | 26.8°C | 3.9°C | 123 mm | 81% | 0.4 m/s | 5.2 |
| 2018 | 21.3°C | 15.9°C | 10.5°C | 29.7°C | 4.4°C | 69 mm | 81% | 0.3 m/s | 5.3 |
| 2017 | 18.2°C | 13.4°C | 8.6°C | 29.0°C | 3.1°C | 134 mm | 79% | 0.5 m/s | 4.9 |
| 2016 | 19.2°C | 14.1°C | 9.0°C | 28.9°C | 3.2°C | 81 mm | 78% | 0.4 m/s | 5.2 |
| 2015 | 22.0°C | 16.1°C | 10.1°C | 27.1°C | 5.6°C | 36 mm | 75% | 0.4 m/s | 6.3 |
| 2014 | 19.1°C | 14.2°C | 9.4°C | 26.5°C | 4.0°C | 83 mm | 79% | 0.4 m/s | 5.4 |
| 2013 | 19.8°C | 14.2°C | 8.5°C | 30.2°C | 2.1°C | 87 mm | 78% | 0.4 m/s | 5.7 |
| 2012 🔥 | 21.1°C | 16.3°C | 11.5°C | 30.0°C | 5.5°C | 107 mm | 81% | 0.4 m/s | 4.9 |
| 2011 | 20.2°C | 15.2°C | 10.3°C | 28.1°C | 5.1°C | 92 mm | 82% | 0.4 m/s | 5 |
| 2010 | 20.8°C | 15.3°C | 9.8°C | 30.5°C | 1.7°C | 73 mm | 78% | 0.4 m/s | 6.2 |
| 2009 | 19.2°C | 14.2°C | 9.3°C | 25.2°C | 4.1°C | 98 mm | 79% | 0.4 m/s | 5 |
| 2008 | 18.1°C | 12.8°C | 7.5°C | 23.7°C | 0.8°C | 61 mm | 75% | 0.5 m/s | 5.6 |
| 2007 | 20.4°C | 14.5°C | 8.7°C | 30.1°C | 1.6°C | 52 mm | 76% | 0.4 m/s | 6.6 |
| 2006 | 18.5°C | 13.7°C | 9.0°C | 27.5°C | 3.9°C | 174 mm | 81% | 0.4 m/s | 5.1 |
| 2005 ❄️ | 16.3°C | 11.5°C | 6.7°C | 21.9°C | 1.4°C | 77 mm | 79% | 0.5 m/s | 5.5 |
| 2004 | 20.7°C | 15.1°C | 9.4°C | 27.5°C | 3.5°C | 80 mm | 81% | 0.4 m/s | 5.4 |
| 2003 | 17.8°C | 12.8°C | 7.8°C | 24.1°C | 1.7°C | 101 mm | 81% | 0.4 m/s | 4.6 |
| 2002 | 18.7°C | 13.1°C | 7.5°C | 25.3°C | 1.2°C | 105 mm | 73% | 0.5 m/s | 5.9 |
| 2001 | 20.3°C | 14.7°C | 9.1°C | 30.5°C | 1.5°C | 94 mm | 74% | 0.4 m/s | 5.7 |
| 2000 | 19.2°C | 13.9°C | 8.5°C | 28.6°C | 1.4°C | 87 mm | 80% | 0.4 m/s | 5.3 |
| 1999 | 20.6°C | 14.8°C | 9.0°C | 29.2°C | 2.7°C | 73 mm | 73% | 0.4 m/s | 5.8 |
| 1998 | 20.1°C | 14.9°C | 9.8°C | 27.2°C | 0.9°C | 150 mm | 82% | 0.4 m/s | 5.9 |
| 1997 | 16.8°C | 11.7°C | 6.6°C | 24.5°C | 1.7°C | 77 mm | 76% | 0.5 m/s | 5.6 |
| 1996 | 17.9°C | 12.5°C | 7.1°C | 27.4°C | 0.0°C | 77 mm | 79% | 0.4 m/s | 5.5 |
| 1995 | 17.9°C | 12.8°C | 7.8°C | 24.7°C | 1.9°C | 79 mm | 77% | 0.4 m/s | 5.1 |
| 1994 | 18.0°C | 12.4°C | 6.9°C | 27.7°C | 1.9°C | 74 mm | 78% | 0.4 m/s | 5.7 |
| 1993 | 19.9°C | 14.4°C | 8.9°C | 26.2°C | 6.7°C | 36 mm | 77% | 0.4 m/s | 5.7 |
| 1992 | 19.3°C | 12.9°C | 6.6°C | 30.5°C | -0.3°C | 66 mm | 74% | 0.4 m/s | 5.9 |
| 1991 | 21.8°C | 16.1°C | 10.5°C | 27.9°C | 5.1°C | 90 mm | 79% | 0.4 m/s | 6.2 |
| 1990 | 16.7°C | 11.9°C | 7.1°C | 21.2°C | 2.6°C | 167 mm | 80% | 0.5 m/s | 5.1 |
| 1989 | 18.7°C | 13.6°C | 8.6°C | 24.8°C | 3.7°C | 189 mm | 83% | 0.4 m/s | 5.1 |
| 1988 | 19.1°C | 13.9°C | 8.7°C | 26.8°C | 4.1°C | 82 mm | 82% | 0.4 m/s | 5.3 |
| 1987 | 18.9°C | 13.4°C | 8.0°C | 28.3°C | 1.5°C | 52 mm | 81% | 0.4 m/s | 5.6 |
| 1986 | 20.2°C | 14.6°C | 8.9°C | 27.6°C | -0.1°C | 38 mm | 76% | 0.4 m/s | 6.2 |
| 1985 | 19.7°C | 14.1°C | 8.6°C | 26.2°C | 1.3°C | 126 mm | 76% | 0.4 m/s | 6 |
| 1984 🌧️ | 17.1°C | 12.3°C | 7.6°C | 23.2°C | 2.2°C | 228 mm | 83% | 0.4 m/s | 4.2 |
| 1983 | 17.1°C | 12.3°C | 7.5°C | 22.8°C | 0.4°C | 124 mm | 84% | 0.4 m/s | — |
| 1982 | 20.0°C | 14.5°C | 8.9°C | 26.3°C | 4.6°C | 70 mm | 78% | 0.3 m/s | — |
| 1981 | 20.1°C | 14.2°C | 8.3°C | 27.1°C | 1.3°C | 81 mm | 74% | 0.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 19.3°C with lows near 8.7°C (mean 14°C), based on 45 years of NASA POWER data.
May averages 97 mm of rainfall in Meriden, about average for rainfall. The wettest on record was 228 mm in 1984.
The hottest May reached 31.9°C in 2022. The coldest dipped to -0.3°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.2°C. Daytime highs moved from 18.8°C to 19.9°C and overnight lows from 8.2°C to 9.6°C over the same span.
May is one of the warmer months of the year in Meriden and about average for rainfall, so plan for around 19.3°C daytime highs and 8.7°C at night.
Not quite — May is the 8th coolest month in Meriden, averaging 14°C.
For May in Meriden, pack light layers you can adjust through the day, with typical highs of 19.3°C and lows of 8.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 78% — quite humid.
Average wind speed in May is 0.4 m/s. The windiest May on record averaged 0.5 m/s (1990).
The wettest May on record was 1984 with 228 mm. On average, May sees 97 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 Meriden 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.
