May is one of the cooler months of the year in Penola, with average highs near 16.8°C and lows around 8.2°C (mean 12.5°C). It is about average for rainfall, averaging 62 mm of rainfall and 78% relative humidity across the period.
May is one of the cooler months of the year in Penola. Across 45 years of records, the warmest May in Penola was 2007 — when the month averaged 14.2°C — while the coldest was 2006 at 10.9°C. Typical May days reach 16.8°C with nights near 8.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Penola, averaging 62 mm of rainfall. The wettest May on record was 1987 with 145 mm, while the driest was 1996 at 12 mm.
Relative humidity in Penola during May averages 78%. The most humid May was 1983 at 84%, and the least humid was 2025 at 70%.
May receives about 2.4 kWh/m²/day of solar energy in Penola. The sunniest May was 2024 at 2.8 kWh/m²/day, and the cloudiest was 1997 at 2.
Average wind speed in Penola during May is 1.3 m/s. The windiest May was 1994 at 1.9 m/s, while the calmest were 2001, 2008 and 2024, among others at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.4°C | 12.4°C | 12.6°C | 12.6°C | 12.6°C | +0.2°C |
| Avg High | 16.7°C | 16.8°C | 17.0°C | 16.7°C | 17.1°C | +0.4°C |
| Avg Low | 8.1°C | 8.0°C | 8.2°C | 8.5°C | 8.0°C | -0.1°C |
| Avg Rain | 85 mm | 51 mm | 63 mm | 60 mm | 44 mm | -41 mm |
May temperatures in Penola have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 1.2°C (2021) to a record high of 28.1°C (2005).
Rainfall in May is about average for rainfall, averaging 62 mm, with a wettest year of 145 mm.
A good time to visit Penola
May is a good time to visit Penola, with days averaging 16.8°C and nights around 8.2°C (mean 12.5°C, cooler than Penola'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 | 19.1°C | 13.6°C | 8.1°C | 26.7°C | 1.6°C | 23 mm | 70% | 1.4 m/s | 2.7 |
| 2024 | 18.6°C | 13.0°C | 7.4°C | 22.0°C | 3.5°C | 15 mm | 73% | 1.1 m/s | 2.8 |
| 2023 | 16.2°C | 12.5°C | 8.8°C | 20.9°C | 5.2°C | 49 mm | 77% | 1.4 m/s | 2.4 |
| 2022 | 16.8°C | 12.8°C | 8.7°C | 22.2°C | 4.2°C | 56 mm | 78% | 1.4 m/s | 2.4 |
| 2021 | 17.0°C | 12.5°C | 8.0°C | 21.9°C | 1.2°C | 35 mm | 73% | 1.5 m/s | 2.4 |
| 2020 | 15.1°C | 11.1°C | 7.0°C | 19.9°C | 1.4°C | 88 mm | 79% | 1.5 m/s | 2.4 |
| 2019 | 17.2°C | 13.1°C | 9.0°C | 25.5°C | 5.3°C | 58 mm | 77% | 1.6 m/s | 2.3 |
| 2018 | 16.7°C | 13.1°C | 9.4°C | 23.9°C | 4.7°C | 57 mm | 74% | 1.6 m/s | 2.1 |
| 2017 | 16.4°C | 12.2°C | 8.1°C | 21.5°C | 4.3°C | 38 mm | 77% | 1.2 m/s | 2.3 |
| 2016 | 17.1°C | 13.3°C | 9.6°C | 22.2°C | 3.1°C | 66 mm | 77% | 1.8 m/s | 2.3 |
| 2015 | 16.3°C | 12.3°C | 8.3°C | 24.3°C | 3.9°C | 59 mm | 77% | 1.7 m/s | 2.4 |
| 2014 | 17.5°C | 13.3°C | 9.1°C | 22.9°C | 2.8°C | 80 mm | 82% | 1.2 m/s | 2.3 |
| 2013 | 17.3°C | 12.8°C | 8.2°C | 27.0°C | 3.9°C | 72 mm | 76% | 1.3 m/s | 2.4 |
| 2012 | 16.1°C | 12.2°C | 8.3°C | 24.4°C | 4.0°C | 74 mm | 79% | 1.3 m/s | 2.3 |
| 2011 | 14.9°C | 11.3°C | 7.8°C | 18.4°C | 4.4°C | 54 mm | 79% | 1.2 m/s | 2.2 |
| 2010 | 17.3°C | 12.4°C | 7.6°C | 23.9°C | 2.5°C | 43 mm | 80% | 1.2 m/s | 2.4 |
| 2009 | 17.2°C | 13.1°C | 9.0°C | 21.5°C | 5.1°C | 23 mm | 81% | 1.2 m/s | 2.3 |
| 2008 | 17.1°C | 12.5°C | 8.0°C | 22.5°C | 4.0°C | 51 mm | 80% | 1.1 m/s | 2.4 |
| 2007 🔥 | 18.2°C | 14.2°C | 10.2°C | 23.6°C | 5.8°C | 133 mm | 79% | 1.7 m/s | 2.3 |
| 2006 ❄️ | 14.7°C | 10.9°C | 7.0°C | 18.6°C | 3.4°C | 58 mm | 83% | 1.2 m/s | 2.2 |
| 2005 | 17.9°C | 13.1°C | 8.2°C | 28.1°C | 5.4°C | 14 mm | 76% | 1.2 m/s | 2.4 |
| 2004 | 15.9°C | 11.9°C | 7.9°C | 20.1°C | 4.2°C | 57 mm | 80% | 1.4 m/s | 2.3 |
| 2003 | 17.5°C | 12.6°C | 7.6°C | 22.6°C | 2.4°C | 37 mm | 78% | 1.2 m/s | 2.4 |
| 2002 | 18.4°C | 13.3°C | 8.1°C | 26.7°C | 2.6°C | 56 mm | 73% | 1.2 m/s | 2.6 |
| 2001 | 16.8°C | 12.4°C | 7.9°C | 23.3°C | 6.1°C | 65 mm | 80% | 1.1 m/s | 2.2 |
| 2000 | 15.8°C | 12.0°C | 8.3°C | 21.6°C | 2.7°C | 134 mm | 82% | 1.5 m/s | 2.3 |
| 1999 | 17.7°C | 13.2°C | 8.8°C | 24.5°C | 3.3°C | 82 mm | 77% | 1.6 m/s | 2.2 |
| 1998 | 16.9°C | 12.5°C | 8.1°C | 24.0°C | 5.4°C | 43 mm | 78% | 1.3 m/s | 2.2 |
| 1997 | 16.1°C | 12.0°C | 7.9°C | 22.2°C | 3.6°C | 102 mm | 83% | 1.2 m/s | 2 |
| 1996 | 17.9°C | 13.1°C | 8.3°C | 24.8°C | 4.0°C | 12 mm | 78% | 1.1 m/s | 2.2 |
| 1995 | 15.7°C | 11.7°C | 7.7°C | 20.2°C | 4.0°C | 44 mm | 81% | 1.3 m/s | 2.4 |
| 1994 | 16.5°C | 12.3°C | 8.0°C | 23.9°C | 3.2°C | 76 mm | 75% | 1.9 m/s | 2.4 |
| 1993 | 17.5°C | 12.5°C | 7.6°C | 24.4°C | 4.4°C | 44 mm | 77% | 1.2 m/s | 2.5 |
| 1992 | 15.4°C | 11.4°C | 7.3°C | 22.4°C | 2.6°C | 72 mm | 84% | 1.1 m/s | 2.3 |
| 1991 | 17.5°C | 12.7°C | 7.9°C | 21.8°C | 5.8°C | 13 mm | 76% | 1.1 m/s | 2.4 |
| 1990 | 17.2°C | 12.8°C | 8.3°C | 25.3°C | 2.6°C | 21 mm | 73% | 1.4 m/s | 2.5 |
| 1989 | 16.9°C | 12.9°C | 8.9°C | 20.7°C | 4.6°C | 80 mm | 82% | 1.3 m/s | 2.3 |
| 1988 | 18.6°C | 14.1°C | 9.6°C | 27.4°C | 6.2°C | 99 mm | 80% | 1.2 m/s | 2.3 |
| 1987 🌧️ | 16.4°C | 12.6°C | 8.8°C | 24.5°C | 4.3°C | 145 mm | 80% | 1.5 m/s | 2.3 |
| 1986 | 16.0°C | 12.0°C | 8.0°C | 20.9°C | 5.3°C | 69 mm | 83% | 1.2 m/s | 2.3 |
| 1985 | 16.4°C | 12.0°C | 7.6°C | 25.3°C | 2.6°C | 83 mm | 78% | 1.3 m/s | 2.5 |
| 1984 | 17.4°C | 12.6°C | 7.9°C | 23.0°C | 3.7°C | 57 mm | 75% | 1.3 m/s | 2.5 |
| 1983 | 16.2°C | 11.7°C | 7.3°C | 19.0°C | 1.7°C | 86 mm | 84% | 1.3 m/s | — |
| 1982 | 15.8°C | 11.7°C | 7.6°C | 21.7°C | 1.8°C | 73 mm | 76% | 1.5 m/s | — |
| 1981 | 17.0°C | 12.3°C | 7.5°C | 24.4°C | 2.7°C | 77 mm | 74% | 1.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16.8°C with lows near 8.2°C (mean 12.5°C), based on 45 years of NASA POWER data.
May averages 62 mm of rainfall in Penola, about average for rainfall. The wettest on record was 145 mm in 1987.
The hottest May reached 28.1°C in 2005. The coldest dipped to 1.2°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 16.6°C to 17.5°C and overnight lows from 7.6°C to 8.2°C over the same span.
May is one of the cooler months of the year in Penola and about average for rainfall, so plan for around 16.8°C daytime highs and 8.2°C at night.
Not quite — May is the 5th coolest month in Penola, averaging 12.5°C.
For May in Penola, pack light layers you can adjust through the day, with typical highs of 16.8°C and lows of 8.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 78% — quite humid.
Average wind speed in May is 1.3 m/s. The windiest May on record averaged 1.9 m/s (1994).
The wettest May on record was 1987 with 145 mm. On average, May sees 62 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 Penola 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.
