May is one of the cooler months of the year in Oatlands, with average highs near 12.7°C and lows around 4.5°C (mean 8.6°C). It is about average for rainfall, averaging 45 mm of rainfall and 86% relative humidity across the period.
May is one of the cooler months of the year in Oatlands. Across 45 years of records, the warmest May in Oatlands was 2007 — when the month averaged 10.6°C — while the coldest was 2006 at 7°C. Typical May days reach 12.7°C with nights near 4.5°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Oatlands, averaging 45 mm of rainfall. The wettest May on record was 1986 with 114 mm, while the driest was 1991 at 9 mm.
Relative humidity in Oatlands during May averages 86%. The most humid May was 1986 at 90%, and the least humid was 2025 at 82%.
May receives about 1.9 kWh/m²/day of solar energy in Oatlands. The sunniest May was 2025 at 2.2 kWh/m²/day, and the cloudiest were 2004, 2012 and 2017, among others at 1.7.
Average wind speed in Oatlands during May is 1.5 m/s. The windiest May was 2016 at 2.1 m/s, while the calmest were 1991 and 2001 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.5°C | 8.4°C | 8.7°C | 8.6°C | 8.6°C | +0.1°C |
| Avg High | 12.6°C | 12.6°C | 12.8°C | 12.7°C | 12.8°C | +0.2°C |
| Avg Low | 4.4°C | 4.3°C | 4.8°C | 4.5°C | 4.4°C | 0°C |
| Avg Rain | 62 mm | 32 mm | 41 mm | 50 mm | 38 mm | -24 mm |
May temperatures in Oatlands have stayed relatively stable across the record.
May has ranged from a record low of -2.6°C (1994) to a record high of 22.7°C (2002).
Rainfall in May is about average for rainfall, averaging 45 mm, with a wettest year of 114 mm.
A good time to visit Oatlands
May is a good time to visit Oatlands, with days averaging 12.7°C and nights around 4.5°C (mean 8.6°C, cooler than Oatlands'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 | 14.4°C | 9.6°C | 4.8°C | 21.0°C | 0.5°C | 23 mm | 82% | 1.6 m/s | 2.2 |
| 2024 | 12.9°C | 8.9°C | 4.9°C | 16.6°C | 0.4°C | 50 mm | 86% | 1.3 m/s | 1.8 |
| 2023 | 12.1°C | 7.9°C | 3.7°C | 16.6°C | -0.8°C | 29 mm | 84% | 1.7 m/s | 2 |
| 2022 | 12.5°C | 8.9°C | 5.2°C | 18.2°C | 1.9°C | 89 mm | 89% | 1.4 m/s | 1.9 |
| 2021 | 12.8°C | 8.2°C | 3.7°C | 20.5°C | -0.5°C | 23 mm | 84% | 1.6 m/s | 1.9 |
| 2020 | 12.2°C | 8.2°C | 4.2°C | 15.4°C | 0.1°C | 13 mm | 89% | 1.5 m/s | 1.9 |
| 2019 | 13.8°C | 9.3°C | 4.8°C | 19.2°C | 1.0°C | 27 mm | 83% | 1.5 m/s | 1.8 |
| 2018 | 13.2°C | 9.1°C | 4.9°C | 22.5°C | 0.2°C | 58 mm | 82% | 1.9 m/s | 1.8 |
| 2017 | 12.5°C | 8.6°C | 4.7°C | 17.9°C | 1.9°C | 42 mm | 86% | 1.4 m/s | 1.7 |
| 2016 | 12.9°C | 9.1°C | 5.2°C | 17.2°C | 0.2°C | 65 mm | 83% | 2.1 m/s | 1.8 |
| 2015 | 11.7°C | 7.7°C | 3.8°C | 16.7°C | -0.2°C | 41 mm | 85% | 2 m/s | 2 |
| 2014 | 13.2°C | 9.0°C | 4.8°C | 18.8°C | -0.1°C | 44 mm | 87% | 1.5 m/s | 1.8 |
| 2013 | 13.2°C | 8.7°C | 4.1°C | 21.2°C | -0.6°C | 35 mm | 85% | 1.4 m/s | 2.1 |
| 2012 | 12.1°C | 8.4°C | 4.8°C | 16.7°C | 2.8°C | 105 mm | 90% | 1.6 m/s | 1.7 |
| 2011 | 11.4°C | 7.7°C | 3.9°C | 17.0°C | -0.5°C | 35 mm | 89% | 1.4 m/s | 1.9 |
| 2010 | 12.7°C | 8.5°C | 4.2°C | 18.5°C | -0.4°C | 47 mm | 85% | 1.4 m/s | 2 |
| 2009 | 12.8°C | 8.8°C | 4.8°C | 16.4°C | 2.3°C | 34 mm | 85% | 1.7 m/s | 2 |
| 2008 | 13.4°C | 9.1°C | 4.8°C | 17.3°C | -1.3°C | 20 mm | 87% | 1.3 m/s | 1.8 |
| 2007 🔥 | 14.8°C | 10.6°C | 6.4°C | 20.2°C | 2.7°C | 46 mm | 83% | 1.9 m/s | 1.9 |
| 2006 ❄️ | 11.0°C | 7.0°C | 3.0°C | 15.3°C | -0.4°C | 38 mm | 87% | 1.6 m/s | 1.9 |
| 2005 | 12.6°C | 8.6°C | 4.6°C | 19.1°C | 1.3°C | 31 mm | 83% | 1.8 m/s | 1.9 |
| 2004 | 11.4°C | 7.9°C | 4.4°C | 16.4°C | 0.6°C | 47 mm | 88% | 1.9 m/s | 1.7 |
| 2003 | 13.4°C | 9.4°C | 5.4°C | 19.0°C | 0.0°C | 69 mm | 89% | 1.3 m/s | 1.8 |
| 2002 | 14.0°C | 9.5°C | 5.1°C | 22.7°C | 1.3°C | 37 mm | 82% | 1.4 m/s | 1.8 |
| 2001 | 11.8°C | 8.1°C | 4.5°C | 15.8°C | -0.4°C | 37 mm | 89% | 1.1 m/s | 1.8 |
| 2000 | 12.5°C | 8.5°C | 4.6°C | 19.0°C | 0.9°C | 51 mm | 83% | 2 m/s | 1.9 |
| 1999 | 14.0°C | 9.9°C | 5.7°C | 19.0°C | 1.2°C | 38 mm | 88% | 1.5 m/s | 1.8 |
| 1998 | 12.8°C | 8.9°C | 4.9°C | 17.9°C | -0.5°C | 25 mm | 84% | 1.5 m/s | 1.9 |
| 1997 | 12.2°C | 8.1°C | 4.1°C | 21.9°C | 0.5°C | 40 mm | 88% | 1.4 m/s | 1.9 |
| 1996 | 12.3°C | 8.4°C | 4.4°C | 17.6°C | 0.9°C | 14 mm | 87% | 1.6 m/s | 2 |
| 1995 | 12.1°C | 7.9°C | 3.7°C | 17.5°C | 0.4°C | 19 mm | 87% | 1.4 m/s | 2 |
| 1994 | 11.4°C | 7.5°C | 3.6°C | 18.2°C | -2.6°C | 63 mm | 85% | 2 m/s | 1.9 |
| 1993 | 13.0°C | 8.7°C | 4.4°C | 18.6°C | 1.0°C | 31 mm | 86% | 1.6 m/s | 2 |
| 1992 | 12.2°C | 8.3°C | 4.5°C | 18.3°C | 1.0°C | 41 mm | 88% | 1.3 m/s | 1.9 |
| 1991 | 13.4°C | 8.7°C | 4.0°C | 15.9°C | 1.4°C | 9 mm | 85% | 1.1 m/s | 1.9 |
| 1990 | 12.2°C | 8.0°C | 3.8°C | 19.4°C | -0.9°C | 39 mm | 87% | 1.6 m/s | 2 |
| 1989 | 12.1°C | 7.8°C | 3.5°C | 17.2°C | -1.4°C | 39 mm | 87% | 1.3 m/s | 2 |
| 1988 | 12.9°C | 9.1°C | 5.3°C | 21.2°C | -0.1°C | 93 mm | 90% | 1.2 m/s | 1.7 |
| 1987 | 13.2°C | 8.8°C | 4.4°C | 19.5°C | -0.8°C | 63 mm | 84% | 1.6 m/s | 2 |
| 1986 🌧️ | 11.7°C | 7.7°C | 3.7°C | 17.0°C | -1.2°C | 114 mm | 90% | 1.3 m/s | 1.9 |
| 1985 | 12.8°C | 8.7°C | 4.6°C | 21.3°C | -0.9°C | 65 mm | 89% | 1.2 m/s | 2 |
| 1984 | 13.0°C | 8.7°C | 4.3°C | 20.0°C | 1.3°C | 27 mm | 87% | 1.3 m/s | 1.9 |
| 1983 | 12.4°C | 8.6°C | 4.8°C | 15.9°C | -0.3°C | 39 mm | 90% | 1.4 m/s | — |
| 1982 | 12.5°C | 8.4°C | 4.2°C | 17.5°C | 0.2°C | 59 mm | 87% | 1.7 m/s | — |
| 1981 | 12.6°C | 8.6°C | 4.6°C | 18.1°C | -0.8°C | 58 mm | 89% | 1.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 12.7°C with lows near 4.5°C (mean 8.6°C), based on 45 years of NASA POWER data.
May averages 45 mm of rainfall in Oatlands, about average for rainfall. The wettest on record was 114 mm in 1986.
The hottest May reached 22.7°C in 2002. The coldest dipped to -2.6°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.1°C. Daytime highs moved from 12.7°C to 12.9°C and overnight lows from 4.5°C to 4.5°C over the same span.
May is one of the cooler months of the year in Oatlands and about average for rainfall, so plan for around 12.7°C daytime highs and 4.5°C at night.
Not quite — May is the 5th coolest month in Oatlands, averaging 8.6°C.
For May in Oatlands, pack warm layers and a jacket for chilly mornings, with typical highs of 12.7°C and lows of 4.5°C.
Relative humidity in May averages 86% — quite humid.
Average wind speed in May is 1.5 m/s. The windiest May on record averaged 2.1 m/s (2016).
The wettest May on record was 1986 with 114 mm. On average, May sees 45 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 Oatlands 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.
