May is one of the warmer months of the year in Stratford, with average highs near 11.6°C and lows around 4.5°C (mean 8.1°C). It is about average for rainfall, averaging 74 mm of rainfall and 83% relative humidity across the period.
May is one of the warmer months of the year in Stratford. Across 45 years of records, the warmest May in Stratford was 2012 — when the month averaged 10.4°C — while the coldest was 2019 at 6°C. Typical May days reach 11.6°C with nights near 4.5°C. The long-term trend is warming, about 0.3°C per decade.
May is about average for rainfall in Stratford, averaging 74 mm of rainfall. The wettest May on record was 1990 with 148 mm, while the driest was 1992 at 32 mm.
Relative humidity in Stratford during May averages 83%. The most humid May was 2011 at 89%, and the least humid was 1987 at 75%.
May receives about 5.2 kWh/m²/day of solar energy in Stratford. The sunniest May was 1999 at 6.3 kWh/m²/day, and the cloudiest was 1984 at 4.
Average wind speed in Stratford during May is 2.6 m/s. The windiest May was 2023 at 3.3 m/s, while the calmest were 2003 and 2006 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.3°C | 7.3°C | 7.6°C | 8.6°C | 8.7°C | +0.4°C |
| Avg High | 12.0°C | 11.1°C | 11.1°C | 12.0°C | 12.1°C | +0.1°C |
| Avg Low | 4.5°C | 3.5°C | 4.1°C | 5.3°C | 5.3°C | +0.8°C |
| Avg Rain | 77 mm | 67 mm | 81 mm | 74 mm | 64 mm | -13 mm |
May temperatures in Stratford have risen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -2°C (1993) to a record high of 22.6°C (1986).
Rainfall in May is about average for rainfall, averaging 74 mm, with a wettest year of 148 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Stratford
May is a good time to visit Stratford, with days averaging 11.6°C and nights around 4.5°C (mean 8.1°C, warmer than Stratford's yearly average) and moderate 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 | 12.5°C | 9.1°C | 5.6°C | 21.3°C | 2.0°C | 84 mm | 83% | 2.9 m/s | 5 |
| 2024 | 12.8°C | 9.7°C | 6.6°C | 20.4°C | 1.7°C | 59 mm | 86% | 2.4 m/s | 5.5 |
| 2023 | 11.3°C | 8.0°C | 4.7°C | 21.4°C | 1.5°C | 56 mm | 81% | 3.3 m/s | 5.6 |
| 2022 | 12.8°C | 9.1°C | 5.5°C | 20.3°C | -1.4°C | 44 mm | 80% | 2.5 m/s | 6 |
| 2021 | 12.0°C | 8.6°C | 5.2°C | 20.4°C | 1.1°C | 83 mm | 81% | 3 m/s | 5.5 |
| 2020 | 11.4°C | 7.9°C | 4.4°C | 21.1°C | 0.4°C | 61 mm | 80% | 3.1 m/s | 5.5 |
| 2019 ❄️ | 8.9°C | 6.0°C | 3.0°C | 15.7°C | -1.0°C | 90 mm | 85% | 2.5 m/s | 5 |
| 2018 | 12.4°C | 8.3°C | 4.2°C | 20.2°C | 0.4°C | 83 mm | 80% | 2.7 m/s | 6 |
| 2017 | 11.3°C | 8.0°C | 4.7°C | 21.2°C | 0.9°C | 120 mm | 86% | 2.7 m/s | 5 |
| 2016 | 12.5°C | 9.2°C | 5.8°C | 20.4°C | 1.5°C | 68 mm | 84% | 2.6 m/s | 4.9 |
| 2015 | 13.1°C | 9.3°C | 5.5°C | 22.4°C | -0.5°C | 53 mm | 81% | 2.6 m/s | 5.5 |
| 2014 | 10.8°C | 7.5°C | 4.3°C | 19.2°C | 0.3°C | 56 mm | 84% | 2.4 m/s | 5.1 |
| 2013 | 12.9°C | 9.6°C | 6.3°C | 20.7°C | 1.6°C | 62 mm | 85% | 2.8 m/s | 5 |
| 2012 🔥 | 13.8°C | 10.4°C | 6.9°C | 18.5°C | 1.2°C | 61 mm | 82% | 2.3 m/s | 5.3 |
| 2011 | 11.8°C | 8.9°C | 6.0°C | 20.3°C | 2.1°C | 103 mm | 89% | 3 m/s | 4.2 |
| 2010 | 12.1°C | 9.0°C | 6.0°C | 20.5°C | 2.7°C | 46 mm | 82% | 3.2 m/s | 5.5 |
| 2009 | 12.9°C | 9.4°C | 5.9°C | 18.7°C | 3.0°C | 85 mm | 83% | 2.6 m/s | 5.2 |
| 2008 | 11.1°C | 8.0°C | 4.9°C | 18.0°C | 1.1°C | 121 mm | 85% | 3 m/s | 4.8 |
| 2007 | 10.7°C | 7.5°C | 4.4°C | 19.5°C | 1.1°C | 85 mm | 83% | 2.8 m/s | 4.9 |
| 2006 | 12.7°C | 8.6°C | 4.6°C | 18.6°C | -0.2°C | 59 mm | 84% | 2 m/s | 5.5 |
| 2005 | 9.7°C | 6.9°C | 4.2°C | 17.4°C | 0.4°C | 114 mm | 85% | 2.9 m/s | 4.6 |
| 2004 | 11.2°C | 7.3°C | 3.4°C | 17.7°C | -0.3°C | 36 mm | 80% | 2.6 m/s | 4.8 |
| 2003 | 9.9°C | 6.5°C | 3.0°C | 19.2°C | -0.8°C | 74 mm | 85% | 2 m/s | 4.6 |
| 2002 | 11.0°C | 7.3°C | 3.5°C | 18.4°C | -0.9°C | 61 mm | 80% | 2.7 m/s | 5.9 |
| 2001 | 11.6°C | 7.7°C | 3.8°C | 19.0°C | -0.8°C | 100 mm | 84% | 2.2 m/s | 5.5 |
| 2000 | 10.1°C | 6.8°C | 3.5°C | 16.2°C | 0.3°C | 78 mm | 82% | 2.6 m/s | 4.8 |
| 1999 | 14.3°C | 9.7°C | 5.1°C | 21.3°C | 0.3°C | 33 mm | 80% | 2.2 m/s | 6.3 |
| 1998 | 14.0°C | 10.2°C | 6.3°C | 19.1°C | 1.1°C | 60 mm | 84% | 2.2 m/s | 5.5 |
| 1997 | 9.7°C | 6.4°C | 3.2°C | 15.2°C | 0.1°C | 76 mm | 83% | 2.7 m/s | 4.9 |
| 1996 | 9.8°C | 6.4°C | 3.0°C | 16.4°C | -1.1°C | 75 mm | 81% | 2.4 m/s | 4.8 |
| 1995 | 9.9°C | 6.1°C | 2.4°C | 16.2°C | -0.9°C | 49 mm | 83% | 2.1 m/s | 5.4 |
| 1994 | 10.0°C | 6.6°C | 3.3°C | 18.5°C | 0.5°C | 74 mm | 85% | 2.6 m/s | 4.8 |
| 1993 | 10.5°C | 6.8°C | 3.1°C | 17.9°C | -2.0°C | 57 mm | 85% | 2.4 m/s | 5.3 |
| 1992 | 11.4°C | 6.8°C | 2.2°C | 20.4°C | -1.8°C | 32 mm | 81% | 2.2 m/s | 5.2 |
| 1991 | 11.8°C | 7.7°C | 3.7°C | 18.1°C | -1.8°C | 69 mm | 80% | 2.7 m/s | 5.1 |
| 1990 🌧️ | 9.4°C | 6.2°C | 3.0°C | 18.0°C | 0.5°C | 148 mm | 84% | 2.8 m/s | 4.3 |
| 1989 | 14.5°C | 10.3°C | 6.1°C | 19.7°C | 2.8°C | 86 mm | 86% | 2.2 m/s | 4.6 |
| 1988 | 12.0°C | 8.1°C | 4.3°C | 17.3°C | -0.4°C | 64 mm | 86% | 2.5 m/s | 4.8 |
| 1987 | 12.3°C | 8.2°C | 4.0°C | 18.1°C | -0.9°C | 37 mm | 75% | 2.5 m/s | 5.7 |
| 1986 | 12.4°C | 8.6°C | 4.8°C | 22.6°C | -0.7°C | 48 mm | 82% | 2.6 m/s | 6.2 |
| 1985 | 10.5°C | 6.8°C | 3.0°C | 17.9°C | -0.1°C | 98 mm | 83% | 2.4 m/s | 5.4 |
| 1984 | 11.0°C | 7.6°C | 4.1°C | 16.0°C | 0.3°C | 89 mm | 88% | 2.5 m/s | 4 |
| 1983 | 11.4°C | 8.1°C | 4.8°C | 15.9°C | 1.2°C | 127 mm | 86% | 2.5 m/s | — |
| 1982 | 10.7°C | 7.3°C | 3.9°C | 18.4°C | 0.4°C | 62 mm | 84% | 2.5 m/s | — |
| 1981 | 13.2°C | 9.5°C | 5.7°C | 19.2°C | 0.8°C | 86 mm | 85% | 2.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 11.6°C with lows near 4.5°C (mean 8.1°C), based on 45 years of NASA POWER data.
May averages 74 mm of rainfall in Stratford, about average for rainfall. The wettest on record was 148 mm in 1990.
The hottest May reached 22.6°C in 1986. The coldest dipped to -2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1°C. Daytime highs moved from 11.4°C to 12.3°C and overnight lows from 4.3°C to 5.5°C over the same span.
May is one of the warmer months of the year in Stratford and about average for rainfall, so plan for around 11.6°C daytime highs and 4.5°C at night.
Not quite — May is the 7th coolest month in Stratford, averaging 8.1°C.
For May in Stratford, pack warm layers and a jacket for chilly mornings, with typical highs of 11.6°C and lows of 4.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 83% — quite humid.
Average wind speed in May is 2.6 m/s. The windiest May on record averaged 3.3 m/s (2023).
The wettest May on record was 1990 with 148 mm. On average, May sees 74 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 Stratford 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.
