May is one of the cooler months of the year in Roebourne, with average highs near 31.3°C and lows around 18.2°C (mean 24.8°C). It is about average for rainfall, averaging 28 mm of rainfall and 47% relative humidity across the period.
May is one of the cooler months of the year in Roebourne. Across 45 years of records, the warmest May in Roebourne was 1998 — when the month averaged 27.5°C — while the coldest was 2000 at 20.3°C. Typical May days reach 31.3°C with nights near 18.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Roebourne, averaging 28 mm of rainfall. The wettest May on record was 2022 with 149 mm, while the driest were 2017, 2019 and 2023, among others at 0 mm.
Relative humidity in Roebourne during May averages 47%. The most humid May was 1992 at 64%, and the least humid was 2019 at 32%.
May receives about 4.5 kWh/m²/day of solar energy in Roebourne. The sunniest Mays were 2017 and 2019 at 5.1 kWh/m²/day, and the cloudiest was 2022 at 3.5.
Average wind speed in Roebourne during May is 3.4 m/s. The windiest May was 2000 at 4.6 m/s, while the calmest was 1984 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.6°C | 25.0°C | 24.5°C | 24.6°C | 25.2°C | +0.6°C |
| Avg High | 31.1°C | 31.3°C | 31.3°C | 31.1°C | 31.6°C | +0.5°C |
| Avg Low | 18.1°C | 18.6°C | 17.8°C | 18.0°C | 18.8°C | +0.7°C |
| Avg Rain | 35 mm | 23 mm | 10 mm | 36 mm | 47 mm | +12 mm |
May temperatures in Roebourne have stayed relatively stable across the record.
May has ranged from a record low of 10.2°C (2015) to a record high of 39.3°C (1990).
Rainfall in May is about average for rainfall, averaging 28 mm, with a wettest year of 149 mm.
One of the best times to visit Roebourne
May is one of the best times to visit Roebourne. Expect days averaging 31.3°C and nights around 18.2°C (mean 24.8°C) — cooler than Roebourne's yearly average — with low rainfall (28 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 32.6°C | 25.7°C | 18.8°C | 37.3°C | 13.3°C | 1 mm | 35% | 3.8 m/s | 4.8 |
| 2024 | 32.6°C | 25.9°C | 19.3°C | 35.4°C | 15.5°C | 2 mm | 40% | 3.4 m/s | 4.9 |
| 2023 | 31.4°C | 24.6°C | 17.8°C | 35.3°C | 13.5°C | 0 mm | 32% | 3.6 m/s | 4.6 |
| 2022 🌧️ | 31.0°C | 25.7°C | 20.4°C | 36.2°C | 13.5°C | 149 mm | 56% | 3.3 m/s | 3.5 |
| 2021 | 30.6°C | 24.5°C | 18.4°C | 37.1°C | 13.6°C | 107 mm | 56% | 3.3 m/s | 4.2 |
| 2020 | 31.3°C | 24.5°C | 17.8°C | 35.8°C | 11.6°C | 20 mm | 36% | 3.7 m/s | 4.6 |
| 2019 | 33.3°C | 25.8°C | 18.2°C | 36.9°C | 13.8°C | 0 mm | 32% | 3.3 m/s | 5.1 |
| 2018 | 32.3°C | 25.4°C | 18.4°C | 36.9°C | 14.3°C | 1 mm | 35% | 4.1 m/s | 4.9 |
| 2017 | 32.9°C | 25.4°C | 18.0°C | 34.5°C | 15.7°C | 0 mm | 42% | 2.8 m/s | 5.1 |
| 2016 | 32.3°C | 26.0°C | 19.7°C | 36.1°C | 14.1°C | 12 mm | 50% | 3 m/s | 4.4 |
| 2015 | 28.0°C | 22.4°C | 16.8°C | 32.9°C | 10.2°C | 107 mm | 62% | 3.7 m/s | 4 |
| 2014 | 30.7°C | 24.9°C | 19.1°C | 35.2°C | 13.3°C | 101 mm | 59% | 2.8 m/s | 4.4 |
| 2013 | 30.2°C | 24.0°C | 17.9°C | 37.5°C | 12.8°C | 46 mm | 53% | 3.5 m/s | 4 |
| 2012 | 32.2°C | 24.9°C | 17.6°C | 36.2°C | 11.5°C | 0 mm | 39% | 3.6 m/s | 5 |
| 2011 | 27.6°C | 22.1°C | 16.5°C | 31.3°C | 12.1°C | 70 mm | 60% | 4.4 m/s | 4 |
| 2010 | 31.9°C | 24.9°C | 17.9°C | 37.7°C | 13.4°C | 18 mm | 43% | 3.4 m/s | 4.8 |
| 2009 | 30.6°C | 24.1°C | 17.6°C | 36.1°C | 13.0°C | 2 mm | 40% | 3.7 m/s | 4.4 |
| 2008 | 32.5°C | 24.6°C | 16.8°C | 35.5°C | 13.8°C | 0 mm | 43% | 2.8 m/s | 4.9 |
| 2007 | 33.1°C | 26.1°C | 19.1°C | 36.6°C | 16.0°C | 0 mm | 41% | 3.1 m/s | 4.7 |
| 2006 | 29.2°C | 22.3°C | 15.5°C | 30.6°C | 12.5°C | 4 mm | 57% | 3.5 m/s | 4.4 |
| 2005 | 32.2°C | 25.6°C | 18.9°C | 36.2°C | 13.5°C | 62 mm | 53% | 2.9 m/s | 4.3 |
| 2004 | 30.1°C | 23.5°C | 16.9°C | 34.0°C | 12.7°C | 3 mm | 47% | 3.9 m/s | 4.6 |
| 2003 | 32.7°C | 26.1°C | 19.6°C | 36.2°C | 13.6°C | 1 mm | 43% | 3.3 m/s | 4.7 |
| 2002 | 33.8°C | 27.1°C | 20.4°C | 37.7°C | 14.1°C | 9 mm | 51% | 3.1 m/s | 4.9 |
| 2001 | 32.0°C | 25.5°C | 19.0°C | 36.4°C | 14.4°C | 7 mm | 42% | 3.2 m/s | 4.5 |
| 2000 ❄️ | 26.9°C | 20.3°C | 13.8°C | 31.7°C | 10.6°C | 15 mm | 59% | 4.6 m/s | 4.6 |
| 1999 | 30.6°C | 24.1°C | 17.6°C | 33.6°C | 12.7°C | 48 mm | 62% | 3.1 m/s | 4.5 |
| 1998 🔥 | 33.2°C | 27.5°C | 21.8°C | 38.7°C | 16.2°C | 39 mm | 58% | 3.1 m/s | 4.1 |
| 1997 | 30.2°C | 24.8°C | 19.4°C | 35.5°C | 15.0°C | 8 mm | 57% | 3.4 m/s | 4.1 |
| 1996 | 31.7°C | 24.5°C | 17.4°C | 34.5°C | 12.8°C | 0 mm | 47% | 3.1 m/s | 4.9 |
| 1995 | 30.4°C | 24.0°C | 17.6°C | 33.2°C | 13.7°C | 2 mm | 48% | 4.1 m/s | 4.6 |
| 1994 | 32.9°C | 25.4°C | 18.0°C | 36.6°C | 14.6°C | 0 mm | 34% | 3.4 m/s | 5 |
| 1993 | 29.8°C | 24.5°C | 19.2°C | 33.8°C | 15.8°C | 23 mm | 56% | 3.5 m/s | 4.2 |
| 1992 | 28.8°C | 23.5°C | 18.1°C | 32.5°C | 12.3°C | 51 mm | 64% | 2.9 m/s | 3.7 |
| 1991 | 32.5°C | 25.8°C | 19.2°C | 37.3°C | 15.4°C | 56 mm | 47% | 3 m/s | 4.5 |
| 1990 | 32.8°C | 25.4°C | 18.1°C | 39.3°C | 13.0°C | 0 mm | 37% | 3.4 m/s | 4.8 |
| 1989 | 30.8°C | 24.2°C | 17.6°C | 33.5°C | 14.2°C | 4 mm | 52% | 3.1 m/s | 4.6 |
| 1988 | 28.7°C | 22.9°C | 17.2°C | 32.7°C | 13.0°C | 116 mm | 64% | 3.2 m/s | 3.8 |
| 1987 | 30.5°C | 24.3°C | 18.1°C | 36.3°C | 13.0°C | 16 mm | 37% | 3.9 m/s | 4.2 |
| 1986 | 31.6°C | 24.3°C | 17.0°C | 34.3°C | 12.9°C | 1 mm | 32% | 3.5 m/s | 4.8 |
| 1985 | 31.7°C | 24.6°C | 17.6°C | 35.5°C | 13.2°C | 5 mm | 38% | 3.2 m/s | 4.5 |
| 1984 | 31.5°C | 25.9°C | 20.2°C | 36.2°C | 14.9°C | 87 mm | 59% | 2.6 m/s | 4.2 |
| 1983 | 32.6°C | 25.5°C | 18.3°C | 35.3°C | 14.9°C | 0 mm | 40% | 2.9 m/s | — |
| 1982 | 31.4°C | 24.9°C | 18.4°C | 35.5°C | 10.6°C | 71 mm | 52% | 3.2 m/s | — |
| 1981 | 31.5°C | 25.0°C | 18.5°C | 37.0°C | 12.2°C | 12 mm | 42% | 3.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 31.3°C with lows near 18.2°C (mean 24.8°C), based on 45 years of NASA POWER data.
May averages 28 mm of rainfall in Roebourne, about average for rainfall. The wettest on record was 149 mm in 2022.
The hottest May reached 39.3°C in 1990. The coldest dipped to 10.2°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 18.6°C to 18.9°C while daytime highs eased from 31.7°C to 31.6°C, narrowing the gap between day and night.
May is one of the cooler months of the year in Roebourne and about average for rainfall, so plan for around 31.3°C daytime highs and 18.2°C at night.
Not quite — May is the 4th coolest month in Roebourne, averaging 24.8°C.
For May in Roebourne, pack light, breathable clothing and sun protection, with typical highs of 31.3°C and lows of 18.2°C.
Relative humidity in May averages 47% — relatively dry.
Average wind speed in May is 3.4 m/s. The windiest May on record averaged 4.6 m/s (2000).
The wettest May on record was 2022 with 149 mm. On average, May sees 28 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 Roebourne 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.
