May is one of the warmer months of the year in Alma, with average highs near 15.2°C and lows around 4.8°C (mean 10°C). It is about average for rainfall, averaging 84 mm of rainfall and 77% relative humidity across the period.
May is one of the warmer months of the year in Alma. Across 45 years of records, the warmest May in Alma was 1999 — when the month averaged 13.3°C — while the coldest was 1997 at 7°C. Typical May days reach 15.2°C with nights near 4.8°C. The long-term trend is warming, about 0.4°C per decade.
May is about average for rainfall in Alma, averaging 84 mm of rainfall. The wettest May on record was 1983 with 180 mm, while the driest was 2007 at 26 mm.
Relative humidity in Alma during May averages 77%. The most humid Mays were 1983 and 1989 at 82%, and the least humid was 2023 at 72%.
May receives about 5.2 kWh/m²/day of solar energy in Alma. The sunniest May was 1992 at 6.3 kWh/m²/day, and the cloudiest was 1993 at 3.9.
Average wind speed in Alma during May is 2.5 m/s. The windiest Mays were 2002 and 2023 at 2.9 m/s, while the calmest was 2003 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.5°C | 9.8°C | 9.7°C | 10.6°C | 10.8°C | +1.3°C |
| Avg High | 14.6°C | 14.9°C | 14.8°C | 15.9°C | 16.1°C | +1.5°C |
| Avg Low | 4.4°C | 4.7°C | 4.5°C | 5.4°C | 5.4°C | +1°C |
| Avg Rain | 103 mm | 73 mm | 66 mm | 96 mm | 86 mm | -17 mm |
May temperatures in Alma have risen by about 2.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.3°C (2019) to a record high of 28.5°C (2023).
Rainfall in May is about average for rainfall, averaging 84 mm, with a wettest year of 180 mm.
A good time to visit Alma
May is a good time to visit Alma, with days averaging 15.2°C and nights around 4.8°C (mean 10°C, warmer than Alma's yearly average) and higher 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 | 16.0°C | 10.8°C | 5.7°C | 24.4°C | -1.4°C | 114 mm | 78% | 2.5 m/s | 4.7 |
| 2024 | 18.1°C | 12.9°C | 7.8°C | 26.0°C | -0.2°C | 54 mm | 74% | 2.5 m/s | 5.2 |
| 2023 | 15.5°C | 9.9°C | 4.2°C | 28.5°C | -1.9°C | 49 mm | 72% | 2.9 m/s | 5.7 |
| 2022 | 17.1°C | 11.7°C | 6.2°C | 25.4°C | -2.7°C | 145 mm | 75% | 2.4 m/s | 5.5 |
| 2021 | 15.4°C | 10.3°C | 5.1°C | 25.0°C | -2.6°C | 83 mm | 73% | 2.5 m/s | 5.6 |
| 2020 | 14.2°C | 8.9°C | 3.6°C | 28.2°C | -3.8°C | 72 mm | 76% | 2.6 m/s | 5.9 |
| 2019 | 13.4°C | 8.5°C | 3.6°C | 19.5°C | -5.3°C | 111 mm | 76% | 2.3 m/s | 5.5 |
| 2018 | 15.4°C | 9.5°C | 3.7°C | 27.6°C | -3.5°C | 75 mm | 75% | 2.7 m/s | 5.8 |
| 2017 | 15.2°C | 10.7°C | 6.2°C | 23.3°C | -0.2°C | 128 mm | 82% | 2.6 m/s | 4.6 |
| 2016 | 16.5°C | 10.9°C | 5.2°C | 25.8°C | -1.1°C | 75 mm | 79% | 2.4 m/s | 5.2 |
| 2015 | 16.6°C | 11.0°C | 5.4°C | 23.8°C | 0.2°C | 88 mm | 77% | 2.8 m/s | 5.3 |
| 2014 | 15.6°C | 10.8°C | 6.1°C | 23.5°C | 0.7°C | 85 mm | 80% | 2.3 m/s | 4.7 |
| 2013 | 17.2°C | 11.9°C | 6.6°C | 25.4°C | -0.6°C | 136 mm | 78% | 2.3 m/s | 4.9 |
| 2012 | 17.4°C | 11.6°C | 5.9°C | 27.1°C | 0.1°C | 84 mm | 76% | 2.4 m/s | 5.5 |
| 2011 | 15.2°C | 10.1°C | 5.0°C | 23.2°C | -0.3°C | 109 mm | 80% | 2.4 m/s | 4.8 |
| 2010 | 16.8°C | 11.4°C | 6.0°C | 28.0°C | -1.7°C | 68 mm | 74% | 2.4 m/s | 5.8 |
| 2009 | 13.3°C | 8.2°C | 3.0°C | 24.0°C | -1.5°C | 76 mm | 75% | 2.7 m/s | 5 |
| 2008 | 14.1°C | 9.1°C | 4.2°C | 21.4°C | -2.9°C | 52 mm | 74% | 2.4 m/s | 5.4 |
| 2007 | 15.8°C | 10.3°C | 4.7°C | 27.5°C | -1.9°C | 26 mm | 73% | 2.7 m/s | 6.1 |
| 2006 | 17.0°C | 11.9°C | 6.9°C | 27.4°C | -2.0°C | 86 mm | 79% | 2.6 m/s | 4.6 |
| 2005 | 14.3°C | 9.3°C | 4.3°C | 22.2°C | -3.6°C | 33 mm | 78% | 2.3 m/s | 4.8 |
| 2004 | 12.7°C | 7.7°C | 2.7°C | 21.6°C | -3.5°C | 89 mm | 78% | 2.8 m/s | 4.7 |
| 2003 | 15.5°C | 10.3°C | 5.2°C | 26.0°C | -2.5°C | 44 mm | 76% | 2 m/s | 5.4 |
| 2002 | 12.7°C | 7.7°C | 2.7°C | 23.3°C | -2.7°C | 104 mm | 78% | 2.9 m/s | 4.8 |
| 2001 | 18.6°C | 12.9°C | 7.2°C | 25.2°C | 1.2°C | 58 mm | 76% | 2.3 m/s | 5.6 |
| 2000 | 14.1°C | 9.2°C | 4.3°C | 22.6°C | -2.7°C | 97 mm | 79% | 2.6 m/s | 4.9 |
| 1999 🔥 | 19.3°C | 13.3°C | 7.3°C | 27.5°C | -1.5°C | 43 mm | 74% | 2.5 m/s | 6 |
| 1998 | 18.0°C | 12.7°C | 7.5°C | 24.8°C | 3.0°C | 61 mm | 77% | 2.5 m/s | 5.4 |
| 1997 ❄️ | 11.4°C | 7.0°C | 2.6°C | 20.5°C | -4.1°C | 114 mm | 80% | 2.7 m/s | 4.7 |
| 1996 | 13.2°C | 8.2°C | 3.2°C | 20.1°C | -1.9°C | 63 mm | 75% | 2.5 m/s | 5.3 |
| 1995 | 14.0°C | 9.3°C | 4.5°C | 21.6°C | -3.2°C | 103 mm | 80% | 2.2 m/s | 4.6 |
| 1994 | 14.1°C | 8.6°C | 3.2°C | 22.6°C | -3.1°C | 57 mm | 75% | 2.3 m/s | 5.5 |
| 1993 | 14.6°C | 10.1°C | 5.6°C | 20.3°C | 2.0°C | 82 mm | 78% | 2.5 m/s | 3.9 |
| 1992 | 15.4°C | 9.7°C | 4.0°C | 26.7°C | -3.3°C | 56 mm | 74% | 2.6 m/s | 6.3 |
| 1991 | 15.1°C | 10.2°C | 5.3°C | 24.7°C | -1.7°C | 82 mm | 77% | 2.6 m/s | 5.2 |
| 1990 | 13.8°C | 8.6°C | 3.3°C | 21.9°C | -2.6°C | 65 mm | 74% | 2.5 m/s | 5.4 |
| 1989 | 16.5°C | 11.7°C | 6.9°C | 26.2°C | -1.8°C | 126 mm | 82% | 2.2 m/s | 4.4 |
| 1988 | 16.4°C | 10.9°C | 5.4°C | 23.1°C | -1.7°C | 49 mm | 75% | 2.5 m/s | 5.3 |
| 1987 | 14.6°C | 9.1°C | 3.6°C | 22.9°C | -4.4°C | 84 mm | 74% | 2.5 m/s | 4.6 |
| 1986 | 16.2°C | 10.9°C | 5.6°C | 24.6°C | -4.6°C | 122 mm | 77% | 2.6 m/s | 5.1 |
| 1985 | 12.8°C | 7.8°C | 2.8°C | 20.8°C | -2.9°C | 113 mm | 75% | 2.4 m/s | 5.3 |
| 1984 | 12.9°C | 8.3°C | 3.6°C | 21.6°C | -0.9°C | 96 mm | 78% | 2.7 m/s | 4 |
| 1983 🌧️ | 11.6°C | 7.4°C | 3.2°C | 19.9°C | -3.9°C | 180 mm | 82% | 2.6 m/s | — |
| 1982 | 16.2°C | 10.6°C | 5.1°C | 26.5°C | -0.9°C | 46 mm | 78% | 2.2 m/s | — |
| 1981 | 14.2°C | 9.0°C | 3.8°C | 23.0°C | -3.3°C | 115 mm | 79% | 2.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.2°C with lows near 4.8°C (mean 10°C), based on 45 years of NASA POWER data.
May averages 84 mm of rainfall in Alma, about average for rainfall. The wettest on record was 180 mm in 1983.
The hottest May reached 28.5°C in 2023. The coldest dipped to -5.3°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 2.5°C. Daytime highs moved from 13.5°C to 16.4°C and overnight lows from 3.7°C to 5.8°C over the same span.
May is one of the warmer months of the year in Alma and about average for rainfall, so plan for around 15.2°C daytime highs and 4.8°C at night.
Not quite — May is the 8th coolest month in Alma, averaging 10°C.
For May in Alma, pack warm layers and a jacket for chilly mornings, with typical highs of 15.2°C and lows of 4.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 77% — quite humid.
Average wind speed in May is 2.5 m/s. The windiest May on record averaged 2.9 m/s (2002).
The wettest May on record was 1983 with 180 mm. On average, May sees 84 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 Alma 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.
