May is one of the cooler months of the year in Manjimup, with average highs near 18.8°C and lows around 9.1°C (mean 14°C). It is a relatively wet time of year, averaging 94 mm of rainfall and 77% relative humidity across the period.
May is one of the cooler months of the year in Manjimup. Across 45 years of records, the warmest May in Manjimup was 2024 — when the month averaged 16.4°C — while the coldest was 2015 at 12.4°C. Typical May days reach 18.8°C with nights near 9.1°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Manjimup, averaging 94 mm of rainfall. The wettest May on record was 1988 with 190 mm, while the driest was 2019 at 24 mm.
Relative humidity in Manjimup during May averages 77%. The most humid May was 2008 at 85%, and the least humid was 2018 at 64%.
May receives about 2.7 kWh/m²/day of solar energy in Manjimup. The sunniest May was 2009 at 3.1 kWh/m²/day, and the cloudiest was 2014 at 2.2.
Average wind speed in Manjimup during May is 2.9 m/s. The windiest May was 1984 at 3.6 m/s, while the calmest was 2000 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.6°C | 13.9°C | 14.2°C | 13.9°C | 14.5°C | +0.9°C |
| Avg High | 18.3°C | 18.5°C | 19.0°C | 18.9°C | 19.7°C | +1.4°C |
| Avg Low | 8.9°C | 9.1°C | 9.4°C | 8.8°C | 9.4°C | +0.5°C |
| Avg Rain | 96 mm | 112 mm | 94 mm | 82 mm | 80 mm | -16 mm |
May temperatures in Manjimup have risen by about 1.2°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 2.7°C (2006) to a record high of 30.3°C (2025).
Rainfall in May is a relatively wet time of year, averaging 94 mm, with a wettest year of 190 mm.
A good time to visit Manjimup
May is a good time to visit Manjimup, with days averaging 18.8°C and nights around 9.1°C (mean 14°C, cooler than Manjimup's yearly average) and higher rainfall. January and February 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 | 21.1°C | 15.3°C | 9.4°C | 30.3°C | 5.8°C | 46 mm | 72% | 3 m/s | 3 |
| 2024 🔥 | 21.8°C | 16.4°C | 11.1°C | 27.0°C | 8.2°C | 83 mm | 71% | 3 m/s | 2.7 |
| 2023 | 19.2°C | 14.0°C | 8.8°C | 24.1°C | 4.3°C | 35 mm | 76% | 2.7 m/s | 2.8 |
| 2022 | 19.1°C | 14.1°C | 9.1°C | 23.8°C | 5.5°C | 84 mm | 77% | 2.7 m/s | 2.9 |
| 2021 | 18.7°C | 14.3°C | 9.9°C | 24.8°C | 5.8°C | 86 mm | 79% | 2.7 m/s | 2.4 |
| 2020 | 18.0°C | 13.1°C | 8.2°C | 26.6°C | 4.1°C | 144 mm | 77% | 3.3 m/s | 2.7 |
| 2019 | 19.5°C | 13.8°C | 8.0°C | 24.8°C | 3.6°C | 24 mm | 71% | 2.7 m/s | 3 |
| 2018 | 21.3°C | 15.3°C | 9.3°C | 29.7°C | 4.8°C | 60 mm | 64% | 3.2 m/s | 3 |
| 2017 | 19.5°C | 14.4°C | 9.3°C | 27.9°C | 5.9°C | 50 mm | 77% | 2.8 m/s | 2.7 |
| 2016 | 17.8°C | 13.0°C | 8.2°C | 22.4°C | 3.7°C | 68 mm | 80% | 3 m/s | 2.7 |
| 2015 ❄️ | 17.3°C | 12.4°C | 7.5°C | 22.4°C | 3.3°C | 70 mm | 80% | 2.5 m/s | 2.7 |
| 2014 | 18.0°C | 14.3°C | 10.6°C | 22.6°C | 5.0°C | 161 mm | 85% | 3.1 m/s | 2.2 |
| 2013 | 17.7°C | 13.2°C | 8.7°C | 22.4°C | 4.9°C | 157 mm | 83% | 2.7 m/s | 2.7 |
| 2012 | 19.5°C | 14.4°C | 9.3°C | 25.2°C | 4.5°C | 86 mm | 76% | 2.5 m/s | 2.7 |
| 2011 | 19.4°C | 14.3°C | 9.2°C | 24.8°C | 5.9°C | 71 mm | 78% | 2.7 m/s | 2.8 |
| 2010 | 19.0°C | 13.6°C | 8.3°C | 25.4°C | 4.9°C | 74 mm | 77% | 2.5 m/s | 2.7 |
| 2009 | 20.8°C | 14.7°C | 8.5°C | 26.7°C | 5.8°C | 90 mm | 67% | 2.7 m/s | 3.1 |
| 2008 | 18.5°C | 14.3°C | 10.1°C | 23.5°C | 7.5°C | 145 mm | 85% | 2.6 m/s | 2.5 |
| 2007 | 17.3°C | 13.5°C | 9.7°C | 24.8°C | 6.1°C | 51 mm | 80% | 3 m/s | 2.4 |
| 2006 | 18.7°C | 13.3°C | 7.9°C | 26.1°C | 2.7°C | 42 mm | 74% | 2.5 m/s | 2.8 |
| 2005 | 19.6°C | 15.4°C | 11.3°C | 24.3°C | 6.8°C | 151 mm | 85% | 3.2 m/s | 2.6 |
| 2004 | 18.4°C | 13.6°C | 8.8°C | 28.1°C | 3.9°C | 105 mm | 76% | 3.2 m/s | 2.6 |
| 2003 | 20.3°C | 15.3°C | 10.4°C | 29.2°C | 5.8°C | 105 mm | 73% | 3.1 m/s | 2.9 |
| 2002 | 19.0°C | 14.2°C | 9.4°C | 27.9°C | 5.3°C | 77 mm | 79% | 3.1 m/s | 2.9 |
| 2001 | 18.9°C | 14.2°C | 9.5°C | 26.2°C | 5.6°C | 125 mm | 80% | 2.7 m/s | 2.7 |
| 2000 | 18.7°C | 13.6°C | 8.5°C | 24.1°C | 5.6°C | 49 mm | 75% | 2.4 m/s | 2.8 |
| 1999 | 18.8°C | 14.7°C | 10.6°C | 25.7°C | 4.4°C | 165 mm | 80% | 3.1 m/s | 2.3 |
| 1998 | 20.0°C | 14.6°C | 9.2°C | 26.8°C | 4.7°C | 75 mm | 75% | 2.9 m/s | 2.8 |
| 1997 | 18.4°C | 14.0°C | 9.5°C | 24.7°C | 4.3°C | 109 mm | 77% | 3.3 m/s | 2.6 |
| 1996 | 20.4°C | 14.7°C | 9.0°C | 26.9°C | 4.6°C | 69 mm | 71% | 2.7 m/s | 2.8 |
| 1995 | 17.8°C | 12.9°C | 8.0°C | 26.3°C | 2.8°C | 128 mm | 76% | 3.1 m/s | 3 |
| 1994 | 19.2°C | 14.3°C | 9.4°C | 27.4°C | 6.0°C | 158 mm | 79% | 3.1 m/s | 2.7 |
| 1993 | 17.8°C | 13.1°C | 8.4°C | 23.8°C | 5.6°C | 85 mm | 81% | 2.8 m/s | 2.5 |
| 1992 | 16.8°C | 12.6°C | 8.4°C | 20.5°C | 3.8°C | 112 mm | 82% | 2.9 m/s | 2.6 |
| 1991 | 18.5°C | 14.2°C | 9.8°C | 25.4°C | 5.9°C | 139 mm | 77% | 3.2 m/s | 2.6 |
| 1990 | 17.7°C | 13.4°C | 9.0°C | 22.7°C | 3.8°C | 79 mm | 83% | 2.6 m/s | 2.7 |
| 1989 | 19.2°C | 14.2°C | 9.3°C | 24.6°C | 3.6°C | 86 mm | 77% | 2.6 m/s | 2.7 |
| 1988 🌧️ | 17.8°C | 13.9°C | 10.0°C | 23.7°C | 5.8°C | 190 mm | 84% | 3.5 m/s | 2.3 |
| 1987 | 17.7°C | 12.8°C | 7.9°C | 22.7°C | 4.5°C | 52 mm | 76% | 2.5 m/s | 2.7 |
| 1986 | 18.5°C | 13.9°C | 9.2°C | 24.4°C | 6.1°C | 90 mm | 77% | 3.1 m/s | 2.6 |
| 1985 | 18.4°C | 13.0°C | 7.7°C | 24.2°C | 3.7°C | 66 mm | 70% | 2.7 m/s | 2.7 |
| 1984 | 17.0°C | 13.1°C | 9.3°C | 20.8°C | 5.0°C | 155 mm | 82% | 3.6 m/s | 2.6 |
| 1983 | 19.9°C | 14.9°C | 9.8°C | 26.0°C | 4.5°C | 64 mm | 75% | 3 m/s | — |
| 1982 | 18.3°C | 13.5°C | 8.7°C | 22.4°C | 3.4°C | 48 mm | 76% | 2.6 m/s | — |
| 1981 | 18.1°C | 13.3°C | 8.4°C | 23.9°C | 4.9°C | 107 mm | 74% | 3.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 18.8°C with lows near 9.1°C (mean 14°C), based on 45 years of NASA POWER data.
May averages 94 mm of rainfall in Manjimup, a relatively wet time of year. The wettest on record was 190 mm in 1988.
The hottest May reached 30.3°C in 2025. The coldest dipped to 2.7°C in 2006.
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 18.3°C to 20°C and overnight lows from 8.8°C to 9.7°C over the same span.
May is one of the cooler months of the year in Manjimup and a relatively wet time of year, so plan for around 18.8°C daytime highs and 9.1°C at night.
Not quite — May is the 6th coolest month in Manjimup, averaging 14°C.
For May in Manjimup, pack light layers you can adjust through the day, with typical highs of 18.8°C and lows of 9.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 77% — quite humid.
Average wind speed in May is 2.9 m/s. The windiest May on record averaged 3.6 m/s (1984).
The wettest May on record was 1988 with 190 mm. On average, May sees 94 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 Manjimup 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.
