May is one of the cooler months of the year in Woomera, with average highs near 21.9°C and lows around 9.2°C (mean 15.6°C). It is about average for rainfall, averaging 13 mm of rainfall and 56% relative humidity across the period.
May is one of the cooler months of the year in Woomera. Across 45 years of records, the warmest May in Woomera was 2005 — when the month averaged 17.7°C — while the coldest was 2020 at 13.3°C. Typical May days reach 21.9°C with nights near 9.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Woomera, averaging 13 mm of rainfall. The wettest May on record was 1989 with 43 mm, while the driest was 1994 at 0 mm.
Relative humidity in Woomera during May averages 56%. The most humid May was 1989 at 75%, and the least humid was 2005 at 46%.
May receives about 3.5 kWh/m²/day of solar energy in Woomera. The sunniest May was 2025 at 3.9 kWh/m²/day, and the cloudiest was 2015 at 3.1.
Average wind speed in Woomera during May is 2.7 m/s. The windiest May was 2016 at 3.3 m/s, while the calmest was 2009 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.3°C | 15.9°C | 15.8°C | 15.6°C | 15.1°C | -0.2°C |
| Avg High | 21.6°C | 22.2°C | 22.3°C | 21.8°C | 21.6°C | 0°C |
| Avg Low | 9.1°C | 9.5°C | 9.3°C | 9.4°C | 8.6°C | -0.5°C |
| Avg Rain | 21 mm | 11 mm | 8 mm | 16 mm | 9 mm | -12 mm |
May temperatures in Woomera have stayed relatively stable across the record.
May has ranged from a record low of 2.6°C (1985) to a record high of 32.3°C (2013).
Rainfall in May is about average for rainfall, averaging 13 mm, with a wettest year of 43 mm.
A good time to visit Woomera
May is a good time to visit Woomera, with days averaging 21.9°C and nights around 9.2°C (mean 15.6°C, cooler than Woomera's yearly average) and low rainfall. November and April 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 | 23.0°C | 16.1°C | 9.3°C | 29.3°C | 4.1°C | 4 mm | 51% | 2.7 m/s | 3.9 |
| 2024 | 23.1°C | 16.2°C | 9.4°C | 26.1°C | 4.9°C | 2 mm | 49% | 2.4 m/s | 3.5 |
| 2023 | 21.0°C | 14.7°C | 8.3°C | 24.2°C | 4.8°C | 12 mm | 62% | 2.4 m/s | 3.6 |
| 2022 | 20.7°C | 14.7°C | 8.6°C | 24.1°C | 5.0°C | 23 mm | 63% | 2.7 m/s | 3.6 |
| 2021 | 21.9°C | 15.5°C | 9.0°C | 29.3°C | 3.8°C | 5 mm | 50% | 2.7 m/s | 3.5 |
| 2020 ❄️ | 19.8°C | 13.3°C | 6.9°C | 25.1°C | 3.6°C | 9 mm | 62% | 2.9 m/s | 3.7 |
| 2019 | 22.0°C | 15.5°C | 8.9°C | 29.2°C | 4.5°C | 10 mm | 56% | 2.9 m/s | 3.6 |
| 2018 | 21.8°C | 15.3°C | 8.8°C | 29.1°C | 4.1°C | 9 mm | 56% | 2.8 m/s | 3.5 |
| 2017 | 22.3°C | 15.8°C | 9.3°C | 26.9°C | 4.8°C | 4 mm | 49% | 2.6 m/s | 3.7 |
| 2016 | 23.1°C | 16.7°C | 10.4°C | 29.9°C | 6.7°C | 13 mm | 53% | 3.3 m/s | 3.4 |
| 2015 | 20.7°C | 14.8°C | 8.8°C | 29.7°C | 4.9°C | 12 mm | 64% | 2.8 m/s | 3.1 |
| 2014 | 22.7°C | 17.1°C | 11.4°C | 28.2°C | 6.9°C | 20 mm | 63% | 2.5 m/s | 3.2 |
| 2013 | 23.3°C | 17.4°C | 11.5°C | 32.3°C | 5.6°C | 39 mm | 55% | 3.2 m/s | 3.3 |
| 2012 | 21.7°C | 14.8°C | 8.0°C | 29.8°C | 3.8°C | 8 mm | 55% | 2.9 m/s | 3.6 |
| 2011 | 19.3°C | 13.8°C | 8.3°C | 25.7°C | 3.3°C | 23 mm | 66% | 2.7 m/s | 3.2 |
| 2010 | 20.6°C | 14.7°C | 8.8°C | 26.5°C | 3.6°C | 21 mm | 64% | 2.7 m/s | 3.4 |
| 2009 | 21.0°C | 14.9°C | 8.8°C | 25.0°C | 5.3°C | 8 mm | 61% | 2.3 m/s | 3.4 |
| 2008 | 22.8°C | 16.0°C | 9.2°C | 27.3°C | 6.9°C | 3 mm | 50% | 2.4 m/s | 3.7 |
| 2007 | 23.0°C | 16.7°C | 10.4°C | 27.4°C | 5.0°C | 18 mm | 58% | 2.9 m/s | 3.7 |
| 2006 | 20.7°C | 14.1°C | 7.5°C | 25.1°C | 3.0°C | 4 mm | 56% | 2.4 m/s | 3.7 |
| 2005 🔥 | 24.4°C | 17.7°C | 11.0°C | 30.8°C | 5.1°C | 2 mm | 46% | 2.5 m/s | 3.3 |
| 2004 | 21.4°C | 14.7°C | 8.1°C | 25.1°C | 4.3°C | 16 mm | 53% | 2.4 m/s | 3.5 |
| 2003 | 22.9°C | 16.2°C | 9.6°C | 27.3°C | 4.8°C | 2 mm | 52% | 2.9 m/s | 3.5 |
| 2002 | 23.8°C | 17.1°C | 10.4°C | 30.6°C | 5.1°C | 9 mm | 49% | 2.8 m/s | 3.4 |
| 2001 | 22.4°C | 15.9°C | 9.4°C | 28.9°C | 3.6°C | 9 mm | 50% | 2.8 m/s | 3.6 |
| 2000 | 20.9°C | 14.5°C | 8.2°C | 27.9°C | 5.2°C | 6 mm | 59% | 3 m/s | 3.6 |
| 1999 | 23.6°C | 17.2°C | 10.7°C | 29.8°C | 5.8°C | 10 mm | 47% | 2.8 m/s | 3.3 |
| 1998 | 23.0°C | 16.3°C | 9.7°C | 27.7°C | 5.5°C | 2 mm | 51% | 2.5 m/s | 3.6 |
| 1997 | 21.7°C | 15.9°C | 10.2°C | 30.9°C | 4.2°C | 10 mm | 55% | 2.6 m/s | 3.2 |
| 1996 | 22.6°C | 15.8°C | 9.1°C | 29.8°C | 4.4°C | 3 mm | 52% | 2.4 m/s | 3.5 |
| 1995 | 20.1°C | 14.1°C | 8.1°C | 29.9°C | 4.6°C | 8 mm | 63% | 3 m/s | 3.6 |
| 1994 | 23.3°C | 16.5°C | 9.6°C | 30.5°C | 5.9°C | 0 mm | 47% | 3.2 m/s | 3.8 |
| 1993 | 22.4°C | 16.1°C | 9.8°C | 28.9°C | 4.3°C | 12 mm | 54% | 2.6 m/s | 3.3 |
| 1992 | 20.6°C | 14.8°C | 9.0°C | 28.5°C | 4.6°C | 33 mm | 62% | 2.5 m/s | 3.5 |
| 1991 | 22.1°C | 15.3°C | 8.5°C | 25.1°C | 4.1°C | 3 mm | 52% | 2.5 m/s | 3.7 |
| 1990 | 22.5°C | 16.5°C | 10.5°C | 30.6°C | 4.5°C | 31 mm | 59% | 3 m/s | 3.5 |
| 1989 🌧️ | 19.7°C | 14.3°C | 8.9°C | 24.8°C | 6.2°C | 43 mm | 75% | 2.4 m/s | 3.3 |
| 1988 | 22.1°C | 16.3°C | 10.5°C | 28.3°C | 5.3°C | 31 mm | 64% | 2.9 m/s | 3.2 |
| 1987 | 20.5°C | 14.5°C | 8.5°C | 26.4°C | 2.6°C | 18 mm | 61% | 2.9 m/s | 3.4 |
| 1986 | 22.2°C | 15.6°C | 9.1°C | 27.7°C | 4.1°C | 18 mm | 56% | 2.9 m/s | 3.6 |
| 1985 | 21.5°C | 14.7°C | 8.0°C | 29.8°C | 2.6°C | 32 mm | 49% | 2.4 m/s | 3.6 |
| 1984 | 22.0°C | 15.6°C | 9.3°C | 27.8°C | 5.0°C | 12 mm | 54% | 2.6 m/s | 3.5 |
| 1983 | 22.5°C | 15.9°C | 9.3°C | 27.9°C | 6.8°C | 2 mm | 56% | 2.9 m/s | — |
| 1982 | 22.4°C | 15.7°C | 9.0°C | 27.2°C | 4.7°C | 2 mm | 51% | 2.7 m/s | — |
| 1981 | 21.7°C | 15.4°C | 9.2°C | 29.3°C | 6.0°C | 34 mm | 53% | 3.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 21.9°C with lows near 9.2°C (mean 15.6°C), based on 45 years of NASA POWER data.
May averages 13 mm of rainfall in Woomera, about average for rainfall. The wettest on record was 43 mm in 1989.
The hottest May reached 32.3°C in 2013. The coldest dipped to 2.6°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.1°C. Daytime highs moved from 22°C to 21.9°C and overnight lows from 9°C to 8.9°C over the same span.
May is one of the cooler months of the year in Woomera and about average for rainfall, so plan for around 21.9°C daytime highs and 9.2°C at night.
Not quite — May is the 4th coolest month in Woomera, averaging 15.6°C.
For May in Woomera, pack light layers you can adjust through the day, with typical highs of 21.9°C and lows of 9.2°C.
Relative humidity in May averages 56% — moderately humid.
Average wind speed in May is 2.7 m/s. The windiest May on record averaged 3.3 m/s (2016).
The wettest May on record was 1989 with 43 mm. On average, May sees 13 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 Woomera 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.
