May is one of the cooler months of the year in Stawell, with average highs near 16.3°C and lows around 6.3°C (mean 11.3°C). It is about average for rainfall, averaging 49 mm of rainfall and 79% relative humidity across the period.
May is one of the cooler months of the year in Stawell. Across 45 years of records, the warmest May in Stawell was 1988 — when the month averaged 13°C — while the coldest were 2006 and 2011 at 9.8°C. Typical May days reach 16.3°C with nights near 6.3°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Stawell, averaging 49 mm of rainfall. The wettest May on record was 1987 with 108 mm, while the driest was 1991 at 7 mm.
Relative humidity in Stawell during May averages 79%. The most humid May was 1983 at 85%, and the least humid was 2025 at 70%.
May receives about 2.4 kWh/m²/day of solar energy in Stawell. The sunniest May was 2025 at 2.9 kWh/m²/day, and the cloudiest were 1997, 2011 and 2018, among others at 2.1.
Average wind speed in Stawell during May is 2.1 m/s. The windiest Mays were 1994, 2015 and 2016 at 2.8 m/s, while the calmest were 2001, 2008 and 2024, among others at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.4°C | 11.2°C | 11.5°C | 11.3°C | 11.0°C | -0.4°C |
| Avg High | 16.3°C | 16.2°C | 16.6°C | 16.2°C | 16.2°C | -0.1°C |
| Avg Low | 6.5°C | 6.1°C | 6.4°C | 6.6°C | 5.9°C | -0.6°C |
| Avg Rain | 70 mm | 38 mm | 41 mm | 58 mm | 38 mm | -31 mm |
May temperatures in Stawell have stayed relatively stable across the record.
May has ranged from a record low of -0.3°C (2021) to a record high of 25.9°C (2002).
Rainfall in May is about average for rainfall, averaging 49 mm, with a wettest year of 108 mm.
A good time to visit Stawell
May is a good time to visit Stawell, with days averaging 16.3°C and nights around 6.3°C (mean 11.3°C, cooler than Stawell's yearly average) and moderate rainfall. February and January 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 | 18.1°C | 12.1°C | 6.1°C | 23.8°C | 1.2°C | 13 mm | 70% | 2.1 m/s | 2.9 |
| 2024 | 17.7°C | 11.9°C | 6.1°C | 20.3°C | 3.0°C | 25 mm | 76% | 1.7 m/s | 2.7 |
| 2023 | 15.2°C | 10.4°C | 5.6°C | 20.4°C | 2.2°C | 46 mm | 81% | 2.1 m/s | 2.3 |
| 2022 | 15.8°C | 11.1°C | 6.4°C | 20.4°C | 3.7°C | 40 mm | 82% | 2 m/s | 2.3 |
| 2021 | 16.0°C | 10.9°C | 5.7°C | 23.5°C | -0.3°C | 61 mm | 78% | 2.3 m/s | 2.4 |
| 2020 | 14.6°C | 9.9°C | 5.2°C | 19.9°C | 1.2°C | 44 mm | 81% | 2.5 m/s | 2.5 |
| 2019 | 16.5°C | 11.5°C | 6.6°C | 22.6°C | 3.1°C | 97 mm | 79% | 2.5 m/s | 2.4 |
| 2018 | 15.9°C | 11.4°C | 6.8°C | 22.2°C | 2.6°C | 78 mm | 79% | 2.5 m/s | 2.1 |
| 2017 | 15.6°C | 10.8°C | 6.0°C | 19.8°C | 1.6°C | 61 mm | 80% | 2 m/s | 2.3 |
| 2016 | 16.9°C | 12.2°C | 7.6°C | 24.7°C | 0.9°C | 62 mm | 77% | 2.8 m/s | 2.3 |
| 2015 | 15.8°C | 11.0°C | 6.3°C | 21.9°C | 2.3°C | 57 mm | 80% | 2.8 m/s | 2.4 |
| 2014 | 17.3°C | 12.5°C | 7.7°C | 22.9°C | 2.4°C | 50 mm | 81% | 2.1 m/s | 2.3 |
| 2013 | 16.6°C | 11.5°C | 6.3°C | 24.3°C | 2.8°C | 50 mm | 77% | 2.1 m/s | 2.4 |
| 2012 | 16.2°C | 11.2°C | 6.2°C | 22.6°C | 1.8°C | 42 mm | 78% | 2.2 m/s | 2.4 |
| 2011 | 14.4°C | 9.8°C | 5.3°C | 21.3°C | 2.3°C | 40 mm | 82% | 1.9 m/s | 2.1 |
| 2010 | 16.3°C | 11.5°C | 6.7°C | 21.9°C | 0.9°C | 37 mm | 80% | 1.9 m/s | 2.4 |
| 2009 | 16.8°C | 11.9°C | 7.0°C | 20.1°C | 4.6°C | 45 mm | 82% | 2 m/s | 2.2 |
| 2008 | 16.4°C | 11.1°C | 5.9°C | 20.5°C | 2.5°C | 44 mm | 79% | 1.7 m/s | 2.3 |
| 2007 | 17.3°C | 12.7°C | 8.2°C | 22.2°C | 3.6°C | 95 mm | 81% | 2.7 m/s | 2.3 |
| 2006 ❄️ | 14.8°C | 9.8°C | 4.9°C | 18.7°C | 1.5°C | 34 mm | 83% | 2 m/s | 2.2 |
| 2005 | 17.7°C | 12.0°C | 6.4°C | 25.2°C | 2.4°C | 12 mm | 71% | 1.9 m/s | 2.5 |
| 2004 | 15.8°C | 10.5°C | 5.2°C | 20.1°C | 2.1°C | 30 mm | 79% | 2.3 m/s | 2.4 |
| 2003 | 17.4°C | 12.0°C | 6.7°C | 22.5°C | 1.9°C | 42 mm | 76% | 1.9 m/s | 2.5 |
| 2002 | 17.5°C | 12.3°C | 7.0°C | 25.9°C | 4.6°C | 37 mm | 73% | 2 m/s | 2.5 |
| 2001 | 16.5°C | 11.5°C | 6.5°C | 23.0°C | 4.3°C | 18 mm | 79% | 1.7 m/s | 2.4 |
| 2000 | 15.5°C | 10.8°C | 6.2°C | 20.3°C | 2.2°C | 52 mm | 80% | 2.5 m/s | 2.3 |
| 1999 | 17.1°C | 11.8°C | 6.5°C | 23.5°C | 0.8°C | 64 mm | 74% | 2.4 m/s | 2.3 |
| 1998 | 16.3°C | 11.1°C | 6.0°C | 21.9°C | 2.0°C | 22 mm | 80% | 2 m/s | 2.3 |
| 1997 | 15.7°C | 11.0°C | 6.3°C | 22.2°C | 1.3°C | 66 mm | 81% | 1.9 m/s | 2.1 |
| 1996 | 16.9°C | 11.4°C | 5.9°C | 23.4°C | 2.2°C | 11 mm | 79% | 1.7 m/s | 2.2 |
| 1995 | 14.9°C | 10.5°C | 6.1°C | 20.9°C | 3.1°C | 41 mm | 83% | 2.1 m/s | 2.3 |
| 1994 | 15.9°C | 11.0°C | 6.1°C | 22.3°C | 1.7°C | 43 mm | 74% | 2.8 m/s | 2.4 |
| 1993 | 16.9°C | 11.7°C | 6.4°C | 24.9°C | 2.6°C | 34 mm | 76% | 1.9 m/s | 2.5 |
| 1992 | 14.9°C | 10.3°C | 5.7°C | 21.9°C | 1.5°C | 78 mm | 83% | 1.8 m/s | 2.3 |
| 1991 | 16.9°C | 11.5°C | 6.2°C | 20.4°C | 3.3°C | 7 mm | 78% | 1.7 m/s | 2.4 |
| 1990 | 16.8°C | 11.5°C | 6.2°C | 25.3°C | 1.3°C | 16 mm | 76% | 2.2 m/s | 2.5 |
| 1989 | 16.5°C | 12.0°C | 7.4°C | 21.4°C | 2.3°C | 71 mm | 82% | 2.3 m/s | 2.2 |
| 1988 🔥 | 17.5°C | 13.0°C | 8.4°C | 25.7°C | 4.2°C | 108 mm | 82% | 1.9 m/s | 2.2 |
| 1987 🌧️ | 15.4°C | 10.9°C | 6.4°C | 21.6°C | 2.3°C | 108 mm | 82% | 2.5 m/s | 2.1 |
| 1986 | 15.9°C | 11.1°C | 6.3°C | 21.3°C | 3.5°C | 75 mm | 83% | 2 m/s | 2.3 |
| 1985 | 16.7°C | 11.6°C | 6.5°C | 25.5°C | 0.8°C | 42 mm | 75% | 2.2 m/s | 2.5 |
| 1984 | 16.7°C | 11.2°C | 5.7°C | 22.7°C | 3.3°C | 26 mm | 76% | 2 m/s | 2.6 |
| 1983 | 15.8°C | 11.2°C | 6.6°C | 19.2°C | 1.3°C | 90 mm | 85% | 2.3 m/s | — |
| 1982 | 15.7°C | 10.5°C | 5.4°C | 21.3°C | 1.4°C | 37 mm | 75% | 2.3 m/s | — |
| 1981 | 16.3°C | 11.1°C | 5.8°C | 25.1°C | 1.5°C | 69 mm | 75% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16.3°C with lows near 6.3°C (mean 11.3°C), based on 45 years of NASA POWER data.
May averages 49 mm of rainfall in Stawell, about average for rainfall. The wettest on record was 108 mm in 1987.
The hottest May reached 25.9°C in 2002. The coldest dipped to -0.3°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.2°C. Daytime highs moved from 16.2°C to 16.6°C and overnight lows from 6°C to 6°C over the same span.
May is one of the cooler months of the year in Stawell and about average for rainfall, so plan for around 16.3°C daytime highs and 6.3°C at night.
Not quite — May is the 5th coolest month in Stawell, averaging 11.3°C.
For May in Stawell, pack warm layers and a jacket for chilly mornings, with typical highs of 16.3°C and lows of 6.3°C.
Relative humidity in May averages 79% — quite humid.
Average wind speed in May is 2.1 m/s. The windiest May on record averaged 2.8 m/s (1994).
The wettest May on record was 1987 with 108 mm. On average, May sees 49 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 Stawell 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.
