May is one of the cooler months of the year in Pakenham, with average highs near 15.6°C and lows around 8°C (mean 11.8°C). It is about average for rainfall, averaging 76 mm of rainfall and 81% relative humidity across the period.
May is one of the cooler months of the year in Pakenham. Across 45 years of records, the warmest May in Pakenham was 2007 — when the month averaged 14.1°C — while the coldest was 2011 at 10.1°C. Typical May days reach 15.6°C with nights near 8°C. The long-term trend is warming, about 0.2°C per decade.
May is about average for rainfall in Pakenham, averaging 76 mm of rainfall. The wettest May on record was 2000 with 157 mm, while the driest was 2025 at 21 mm.
Relative humidity in Pakenham during May averages 81%. The most humid May was 1995 at 89%, and the least humid was 2025 at 70%.
May receives about 2.2 kWh/m²/day of solar energy in Pakenham. The sunniest Mays were 2003, 2024 and 2025, among others at 2.6 kWh/m²/day, and the cloudiest was 1997 at 1.9.
Average wind speed in Pakenham during May is 0.2 m/s. The windiest Mays were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.7°C | 11.5°C | 11.9°C | 12.0°C | 11.8°C | +0.1°C |
| Avg High | 15.4°C | 15.2°C | 15.8°C | 15.7°C | 15.9°C | +0.5°C |
| Avg Low | 8.0°C | 7.7°C | 8.1°C | 8.4°C | 7.7°C | -0.3°C |
| Avg Rain | 101 mm | 70 mm | 71 mm | 82 mm | 45 mm | -56 mm |
May temperatures in Pakenham have risen by about 0.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 0.9°C (2021) to a record high of 25.6°C (1988).
Rainfall in May is about average for rainfall, averaging 76 mm, with a wettest year of 157 mm.
A good time to visit Pakenham
May is a good time to visit Pakenham, with days averaging 15.6°C and nights around 8°C (mean 11.8°C, cooler than Pakenham'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 | 17.9°C | 13.1°C | 8.4°C | 24.4°C | 1.2°C | 21 mm | 70% | 0.2 m/s | 2.6 |
| 2024 | 16.9°C | 12.1°C | 7.2°C | 20.9°C | 2.8°C | 31 mm | 79% | 0.2 m/s | 2.6 |
| 2023 | 14.4°C | 11.0°C | 7.5°C | 19.5°C | 3.7°C | 66 mm | 80% | 0.2 m/s | 2.3 |
| 2022 | 16.0°C | 12.0°C | 8.0°C | 21.1°C | 3.4°C | 33 mm | 80% | 0.2 m/s | 2.2 |
| 2021 | 16.3°C | 12.0°C | 7.8°C | 23.2°C | 0.9°C | 61 mm | 76% | 0.2 m/s | 2.4 |
| 2020 | 13.6°C | 10.4°C | 7.2°C | 17.9°C | 3.8°C | 60 mm | 84% | 0.2 m/s | 2.3 |
| 2019 | 16.4°C | 12.7°C | 9.1°C | 22.2°C | 5.3°C | 82 mm | 76% | 0.2 m/s | 2.2 |
| 2018 | 16.2°C | 12.6°C | 9.0°C | 24.7°C | 4.9°C | 64 mm | 75% | 0.2 m/s | 2.1 |
| 2017 | 16.3°C | 12.1°C | 8.0°C | 20.9°C | 4.8°C | 35 mm | 77% | 0.2 m/s | 2.4 |
| 2016 | 16.8°C | 13.3°C | 9.7°C | 24.3°C | 4.0°C | 66 mm | 72% | 0.2 m/s | 2.2 |
| 2015 | 15.3°C | 11.6°C | 7.9°C | 22.0°C | 2.2°C | 95 mm | 79% | 0.2 m/s | 2.2 |
| 2014 | 16.9°C | 13.2°C | 9.5°C | 22.2°C | 2.4°C | 72 mm | 81% | 0.2 m/s | 2.2 |
| 2013 | 15.9°C | 12.0°C | 8.2°C | 24.9°C | 2.9°C | 86 mm | 78% | 0.2 m/s | 2.2 |
| 2012 | 13.8°C | 10.8°C | 7.8°C | 19.6°C | 3.4°C | 151 mm | 84% | 0.2 m/s | 2.2 |
| 2011 ❄️ | 13.1°C | 10.1°C | 7.2°C | 18.1°C | 1.8°C | 100 mm | 88% | 0.2 m/s | 2 |
| 2010 | 16.0°C | 11.9°C | 7.9°C | 21.4°C | 2.9°C | 72 mm | 84% | 0.2 m/s | 2.4 |
| 2009 | 16.0°C | 11.9°C | 7.7°C | 21.6°C | 4.7°C | 30 mm | 82% | 0.2 m/s | 2.3 |
| 2008 | 15.7°C | 11.6°C | 7.5°C | 20.6°C | 2.4°C | 60 mm | 81% | 0.2 m/s | 2.2 |
| 2007 🔥 | 17.6°C | 14.1°C | 10.5°C | 22.8°C | 6.8°C | 97 mm | 74% | 0.2 m/s | 2.1 |
| 2006 | 14.0°C | 10.6°C | 7.2°C | 18.1°C | 3.8°C | 85 mm | 87% | 0.2 m/s | 2.2 |
| 2005 | 16.8°C | 12.5°C | 8.2°C | 23.1°C | 4.7°C | 29 mm | 75% | 0.2 m/s | 2.3 |
| 2004 | 14.6°C | 11.1°C | 7.5°C | 19.0°C | 4.0°C | 74 mm | 81% | 0.2 m/s | 2.1 |
| 2003 | 17.0°C | 12.4°C | 7.8°C | 21.8°C | 2.9°C | 54 mm | 79% | 0.2 m/s | 2.6 |
| 2002 | 16.8°C | 12.6°C | 8.4°C | 24.1°C | 3.8°C | 91 mm | 77% | 0.2 m/s | 2.3 |
| 2001 | 14.8°C | 11.3°C | 7.9°C | 21.0°C | 5.2°C | 33 mm | 87% | 0.2 m/s | 2.3 |
| 2000 🌧️ | 14.4°C | 11.2°C | 7.9°C | 20.2°C | 3.3°C | 157 mm | 82% | 0.2 m/s | 2.1 |
| 1999 | 16.4°C | 12.5°C | 8.5°C | 21.6°C | 2.6°C | 90 mm | 74% | 0.2 m/s | 2.1 |
| 1998 | 15.7°C | 12.0°C | 8.2°C | 21.6°C | 3.7°C | 76 mm | 80% | 0.2 m/s | 2.1 |
| 1997 | 15.7°C | 11.8°C | 7.8°C | 25.3°C | 2.7°C | 99 mm | 80% | 0.2 m/s | 1.9 |
| 1996 | 14.6°C | 11.0°C | 7.4°C | 21.0°C | 3.3°C | 39 mm | 85% | 0.2 m/s | 2 |
| 1995 | 14.0°C | 10.5°C | 7.1°C | 19.3°C | 2.7°C | 98 mm | 89% | 0.2 m/s | 2.2 |
| 1994 | 14.7°C | 11.3°C | 7.8°C | 20.9°C | 2.9°C | 71 mm | 75% | 0.2 m/s | 2.2 |
| 1993 | 15.8°C | 11.6°C | 7.3°C | 23.0°C | 2.8°C | 53 mm | 79% | 0.2 m/s | 2.2 |
| 1992 | 14.6°C | 11.1°C | 7.6°C | 22.5°C | 2.6°C | 87 mm | 86% | 0.2 m/s | 2.3 |
| 1991 | 15.9°C | 11.7°C | 7.5°C | 21.2°C | 5.0°C | 36 mm | 81% | 0.2 m/s | 2.2 |
| 1990 | 15.0°C | 11.3°C | 7.6°C | 20.7°C | 4.0°C | 45 mm | 81% | 0.2 m/s | 2.4 |
| 1989 | 16.1°C | 12.4°C | 8.7°C | 21.1°C | 3.2°C | 97 mm | 87% | 0.2 m/s | 2.2 |
| 1988 | 16.6°C | 13.1°C | 9.6°C | 25.6°C | 5.2°C | 106 mm | 85% | 0.2 m/s | 2 |
| 1987 | 15.1°C | 11.5°C | 7.9°C | 22.2°C | 3.5°C | 112 mm | 83% | 0.2 m/s | 2.1 |
| 1986 | 14.6°C | 11.0°C | 7.4°C | 20.1°C | 4.1°C | 111 mm | 86% | 0.2 m/s | 2.2 |
| 1985 | 15.6°C | 11.7°C | 7.9°C | 22.9°C | 2.4°C | 90 mm | 82% | 0.2 m/s | 2.4 |
| 1984 | 15.7°C | 11.5°C | 7.3°C | 20.4°C | 3.6°C | 36 mm | 78% | 0.2 m/s | 2.6 |
| 1983 | 15.0°C | 11.5°C | 8.0°C | 19.3°C | 1.8°C | 130 mm | 88% | 0.2 m/s | — |
| 1982 | 14.5°C | 11.0°C | 7.5°C | 19.5°C | 4.0°C | 108 mm | 79% | 0.2 m/s | — |
| 1981 | 15.4°C | 11.4°C | 7.4°C | 22.5°C | 1.2°C | 123 mm | 80% | 0.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.6°C with lows near 8°C (mean 11.8°C), based on 45 years of NASA POWER data.
May averages 76 mm of rainfall in Pakenham, about average for rainfall. The wettest on record was 157 mm in 2000.
The hottest May reached 25.6°C in 1988. The coldest dipped to 0.9°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.6°C. Daytime highs moved from 15.2°C to 16.3°C and overnight lows from 7.6°C to 7.8°C over the same span.
May is one of the cooler months of the year in Pakenham and about average for rainfall, so plan for around 15.6°C daytime highs and 8°C at night.
Not quite — May is the 5th coolest month in Pakenham, averaging 11.8°C.
For May in Pakenham, pack light layers you can adjust through the day, with typical highs of 15.6°C and lows of 8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 81% — quite humid.
Average wind speed in May is 0.2 m/s. The windiest May on record averaged 0.2 m/s (1981).
The wettest May on record was 2000 with 157 mm. On average, May sees 76 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 Pakenham 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.
