May is one of the warmer months of the year in Milton, with average highs near 27.2°C and lows around 20°C (mean 23.6°C). It is one of the drier months, averaging 105 mm of rainfall and 78% relative humidity across the period.
May is one of the warmer months of the year in Milton. Across 45 years of records, the warmest May in Milton was 2000 — when the month averaged 25.7°C — while the coldest were 1993 and 1997 at 22°C. Typical May days reach 27.2°C with nights near 20°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Milton, averaging 105 mm of rainfall. The wettest May on record was 1991 with 290 mm, while the driest was 1988 at 13 mm.
Relative humidity in Milton during May averages 78%. The most humid May was 1991 at 89%, and the least humid was 2007 at 65%.
May receives about 6.6 kWh/m²/day of solar energy in Milton. The sunniest May was 2011 at 7.4 kWh/m²/day, and the cloudiest was 1991 at 5.1.
Average wind speed in Milton during May is 2.6 m/s. The windiest Mays were 2000 and 2009 at 3.1 m/s, while the calmest was 1996 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.0°C | 23.2°C | 23.9°C | 23.8°C | 24.3°C | +1.3°C |
| Avg High | 26.6°C | 26.6°C | 27.7°C | 27.5°C | 27.8°C | +1.2°C |
| Avg Low | 19.3°C | 19.8°C | 20.1°C | 20.2°C | 20.7°C | +1.4°C |
| Avg Rain | 104 mm | 125 mm | 77 mm | 102 mm | 130 mm | +26 mm |
May temperatures in Milton have risen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 9.9°C (1992) to a record high of 34.8°C (2012).
Rainfall in May is one of the drier months, averaging 105 mm, with a wettest year of 290 mm.
One of the best times to visit Milton
May is one of the best times to visit Milton. Expect days averaging 27.2°C and nights around 20°C (mean 23.6°C) — warmer than Milton's yearly average — with higher rainfall (105 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.0°C | 24.9°C | 21.8°C | 32.0°C | 15.8°C | 169 mm | 79% | 2.6 m/s | 6.2 |
| 2024 | 28.4°C | 25.2°C | 22.0°C | 32.4°C | 19.3°C | 166 mm | 82% | 2.5 m/s | 6.4 |
| 2023 | 27.9°C | 24.0°C | 20.0°C | 32.0°C | 14.4°C | 94 mm | 76% | 2.2 m/s | 6.5 |
| 2022 | 28.8°C | 25.2°C | 21.7°C | 31.5°C | 17.4°C | 168 mm | 77% | 2.6 m/s | 6.5 |
| 2021 | 26.0°C | 22.6°C | 19.2°C | 28.5°C | 14.1°C | 111 mm | 80% | 2.8 m/s | 6.5 |
| 2020 | 27.8°C | 23.7°C | 19.6°C | 32.2°C | 12.7°C | 69 mm | 71% | 3 m/s | 6.9 |
| 2019 | 28.0°C | 24.6°C | 21.3°C | 31.8°C | 16.5°C | 73 mm | 80% | 2.3 m/s | 7 |
| 2018 | 28.2°C | 24.7°C | 21.3°C | 32.4°C | 17.1°C | 121 mm | 78% | 2.4 m/s | 6.7 |
| 2017 | 26.6°C | 23.0°C | 19.4°C | 29.1°C | 11.0°C | 198 mm | 79% | 2.8 m/s | 6.4 |
| 2016 | 26.4°C | 23.1°C | 19.8°C | 29.9°C | 12.1°C | 71 mm | 80% | 2.4 m/s | 6.6 |
| 2015 | 27.4°C | 24.1°C | 20.8°C | 29.7°C | 13.3°C | 83 mm | 80% | 2.3 m/s | 6.7 |
| 2014 | 25.8°C | 22.7°C | 19.7°C | 29.8°C | 12.8°C | 157 mm | 83% | 2.5 m/s | 6.6 |
| 2013 | 26.1°C | 22.3°C | 18.6°C | 31.0°C | 10.3°C | 41 mm | 76% | 3 m/s | 6.5 |
| 2012 | 29.5°C | 25.4°C | 21.3°C | 34.8°C | 16.7°C | 91 mm | 71% | 2.2 m/s | 6.9 |
| 2011 | 29.1°C | 24.1°C | 19.1°C | 34.5°C | 12.0°C | 32 mm | 68% | 2.9 m/s | 7.4 |
| 2010 | 27.4°C | 24.2°C | 20.9°C | 31.4°C | 14.4°C | 150 mm | 84% | 2.5 m/s | 6.5 |
| 2009 | 25.9°C | 23.3°C | 20.7°C | 29.7°C | 13.6°C | 176 mm | 86% | 3.1 m/s | 6.1 |
| 2008 | 26.5°C | 23.1°C | 19.7°C | 29.9°C | 14.1°C | 76 mm | 81% | 2.9 m/s | 6.6 |
| 2007 | 28.7°C | 24.1°C | 19.5°C | 32.1°C | 14.5°C | 15 mm | 65% | 2.7 m/s | 6.8 |
| 2006 | 28.5°C | 24.2°C | 19.9°C | 33.4°C | 14.4°C | 81 mm | 73% | 2.8 m/s | 7.1 |
| 2005 | 25.8°C | 22.4°C | 19.0°C | 30.2°C | 11.5°C | 73 mm | 80% | 2.4 m/s | 7 |
| 2004 | 27.7°C | 23.9°C | 20.1°C | 31.3°C | 11.2°C | 43 mm | 78% | 2.7 m/s | 6.9 |
| 2003 | 27.1°C | 24.2°C | 21.4°C | 28.9°C | 16.1°C | 160 mm | 85% | 2.7 m/s | 6.2 |
| 2002 | 28.9°C | 24.4°C | 20.0°C | 31.9°C | 12.5°C | 71 mm | 70% | 3 m/s | 7 |
| 2001 | 27.5°C | 23.3°C | 19.2°C | 30.5°C | 15.1°C | 58 mm | 74% | 2.6 m/s | 7 |
| 2000 🔥 | 30.0°C | 25.7°C | 21.4°C | 33.2°C | 16.6°C | 14 mm | 70% | 3.1 m/s | 7.1 |
| 1999 | 27.4°C | 23.4°C | 19.4°C | 30.6°C | 11.3°C | 144 mm | 73% | 2.5 m/s | 6.6 |
| 1998 | 28.2°C | 24.5°C | 20.8°C | 31.2°C | 14.0°C | 43 mm | 81% | 2.4 m/s | 7.1 |
| 1997 | 24.9°C | 22.0°C | 19.0°C | 28.5°C | 11.7°C | 176 mm | 84% | 2.4 m/s | 6.1 |
| 1996 | 27.5°C | 24.1°C | 20.6°C | 32.0°C | 11.9°C | 55 mm | 80% | 2.1 m/s | 7 |
| 1995 | 26.9°C | 23.7°C | 20.6°C | 29.5°C | 13.0°C | 203 mm | 84% | 2.5 m/s | 6.3 |
| 1994 | 26.5°C | 23.1°C | 19.6°C | 29.0°C | 15.2°C | 79 mm | 78% | 2.4 m/s | 6.4 |
| 1993 ❄️ | 25.4°C | 22.0°C | 18.6°C | 29.0°C | 13.3°C | 54 mm | 81% | 2.6 m/s | 6.4 |
| 1992 | 26.5°C | 22.2°C | 17.9°C | 31.1°C | 9.9°C | 56 mm | 74% | 2.5 m/s | 7 |
| 1991 🌧️ | 26.4°C | 24.3°C | 22.1°C | 29.1°C | 17.7°C | 290 mm | 89% | 2.7 m/s | 5.1 |
| 1990 | 26.0°C | 22.6°C | 19.2°C | 28.5°C | 13.6°C | 149 mm | 83% | 2.6 m/s | 6.6 |
| 1989 | 26.4°C | 22.8°C | 19.3°C | 30.6°C | 12.8°C | 173 mm | 78% | 2.7 m/s | 6.6 |
| 1988 | 27.1°C | 22.6°C | 18.2°C | 30.6°C | 13.2°C | 13 mm | 69% | 2.7 m/s | 6.8 |
| 1987 | 26.3°C | 23.5°C | 20.8°C | 28.7°C | 18.2°C | 188 mm | 83% | 2.2 m/s | 5.7 |
| 1986 | 26.2°C | 22.7°C | 19.1°C | 29.5°C | 12.8°C | 88 mm | 79% | 2.4 m/s | 6.5 |
| 1985 | 27.8°C | 23.9°C | 20.0°C | 31.5°C | 15.5°C | 107 mm | 73% | 2.6 m/s | 6.6 |
| 1984 | 26.0°C | 22.5°C | 19.0°C | 28.9°C | 12.2°C | 73 mm | 79% | 2.6 m/s | 6.2 |
| 1983 | 25.4°C | 22.2°C | 19.0°C | 28.1°C | 12.9°C | 80 mm | 83% | 2.9 m/s | — |
| 1982 | 26.9°C | 23.5°C | 20.0°C | 30.2°C | 14.3°C | 66 mm | 77% | 2.2 m/s | — |
| 1981 | 27.4°C | 22.9°C | 18.4°C | 30.3°C | 13.1°C | 147 mm | 69% | 3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 27.2°C with lows near 20°C (mean 23.6°C), based on 45 years of NASA POWER data.
May averages 105 mm of rainfall in Milton, one of the drier months. The wettest on record was 290 mm in 1991.
The hottest May reached 34.8°C in 2012. The coldest dipped to 9.9°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.4°C. Daytime highs moved from 26.7°C to 27.8°C and overnight lows from 19.3°C to 20.9°C over the same span.
May is one of the warmer months of the year in Milton and one of the drier months, so plan for around 27.2°C daytime highs and 20°C at night.
Not quite — May is the 8th coolest month in Milton, averaging 23.6°C.
For May in Milton, pack light layers you can adjust through the day, with typical highs of 27.2°C and lows of 20°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 78% — quite humid.
Average wind speed in May is 2.6 m/s. The windiest May on record averaged 3.1 m/s (2000).
The wettest May on record was 1991 with 290 mm. On average, May sees 105 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 Milton 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.
