May is close to Geraldton's year-round average, with average highs near 22.4°C and lows around 19.3°C (mean 20.9°C). It is a relatively wet time of year, averaging 61 mm of rainfall and 67% relative humidity across the period.
May is close to Geraldton's year-round average. Across 45 years of records, the warmest May in Geraldton was 2024 — when the month averaged 22.7°C — while the coldest was 1987 at 19.4°C. Typical May days reach 22.4°C with nights near 19.3°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Geraldton, averaging 61 mm of rainfall. The wettest May on record was 1999 with 252 mm, while the driest was 2019 at 2 mm.
Relative humidity in Geraldton during May averages 67%. The most humid May was 2005 at 75%, and the least humid was 2000 at 59%.
May receives about 3.7 kWh/m²/day of solar energy in Geraldton. The sunniest Mays were 2018, 2019 and 2025, among others at 4.1 kWh/m²/day, and the cloudiest was 1999 at 3.
Average wind speed in Geraldton during May is 5.4 m/s. The windiest May was 1981 at 6.2 m/s, while the calmest was 2008 at 4.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.6°C | 20.8°C | 21.0°C | 20.6°C | 21.6°C | +1°C |
| Avg High | 22.1°C | 22.3°C | 22.6°C | 22.2°C | 23.3°C | +1.2°C |
| Avg Low | 19.1°C | 19.4°C | 19.3°C | 18.9°C | 19.8°C | +0.7°C |
| Avg Rain | 76 mm | 75 mm | 64 mm | 46 mm | 38 mm | -38 mm |
May temperatures in Geraldton have risen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 14.5°C (2019) to a record high of 30°C (2025).
Rainfall in May is a relatively wet time of year, averaging 61 mm, with a wettest year of 252 mm.
A good time to visit Geraldton
May is a good time to visit Geraldton, with days averaging 22.4°C and nights around 19.3°C (mean 20.9°C, close to Geraldton's yearly average) and moderate rainfall. December 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 | 24.4°C | 22.3°C | 20.3°C | 30.0°C | 17.7°C | 38 mm | 65% | 5.4 m/s | 4.1 |
| 2024 🔥 | 24.4°C | 22.7°C | 21.0°C | 27.6°C | 18.5°C | 10 mm | 65% | 5 m/s | 3.9 |
| 2023 | 23.2°C | 21.2°C | 19.2°C | 26.2°C | 16.6°C | 43 mm | 62% | 5.6 m/s | 3.8 |
| 2022 | 22.4°C | 20.9°C | 19.5°C | 24.5°C | 15.7°C | 25 mm | 66% | 5.5 m/s | 3.8 |
| 2021 | 23.3°C | 21.7°C | 20.2°C | 27.2°C | 16.9°C | 75 mm | 68% | 5.5 m/s | 3.6 |
| 2020 | 22.2°C | 20.5°C | 18.7°C | 25.4°C | 16.2°C | 39 mm | 63% | 5.8 m/s | 3.7 |
| 2019 | 22.3°C | 20.2°C | 18.1°C | 24.9°C | 14.5°C | 2 mm | 65% | 5.5 m/s | 4.1 |
| 2018 | 23.4°C | 21.3°C | 19.2°C | 26.7°C | 17.0°C | 25 mm | 61% | 5.6 m/s | 4.1 |
| 2017 | 22.5°C | 20.9°C | 19.3°C | 26.5°C | 16.6°C | 18 mm | 67% | 4.9 m/s | 4.1 |
| 2016 | 20.9°C | 19.5°C | 18.0°C | 23.6°C | 16.3°C | 43 mm | 69% | 5.2 m/s | 3.9 |
| 2015 | 22.0°C | 20.3°C | 18.5°C | 25.1°C | 16.5°C | 27 mm | 66% | 5.9 m/s | 4 |
| 2014 | 21.2°C | 20.2°C | 19.1°C | 22.5°C | 17.0°C | 87 mm | 71% | 4.7 m/s | 3.4 |
| 2013 | 21.7°C | 20.4°C | 19.1°C | 24.3°C | 15.2°C | 89 mm | 68% | 5.6 m/s | 3.6 |
| 2012 | 23.2°C | 21.3°C | 19.4°C | 27.5°C | 16.1°C | 14 mm | 67% | 5.2 m/s | 3.9 |
| 2011 | 23.2°C | 21.5°C | 19.8°C | 26.2°C | 17.2°C | 99 mm | 64% | 5.6 m/s | 3.9 |
| 2010 | 21.7°C | 20.1°C | 18.6°C | 25.3°C | 15.7°C | 51 mm | 68% | 5.4 m/s | 4 |
| 2009 | 23.3°C | 21.2°C | 19.2°C | 25.7°C | 16.6°C | 52 mm | 62% | 5.1 m/s | 4.1 |
| 2008 | 22.8°C | 21.5°C | 20.2°C | 25.6°C | 17.6°C | 19 mm | 70% | 4.6 m/s | 3.8 |
| 2007 | 21.3°C | 19.9°C | 18.5°C | 26.8°C | 15.6°C | 20 mm | 69% | 5.3 m/s | 3.9 |
| 2006 | 22.6°C | 20.6°C | 18.5°C | 26.0°C | 16.6°C | 18 mm | 68% | 5.8 m/s | 3.8 |
| 2005 | 23.6°C | 21.8°C | 20.0°C | 26.5°C | 18.1°C | 114 mm | 75% | 5 m/s | 3.4 |
| 2004 | 21.8°C | 20.3°C | 18.9°C | 26.1°C | 14.9°C | 130 mm | 67% | 5.7 m/s | 3.7 |
| 2003 | 23.2°C | 21.6°C | 19.9°C | 27.5°C | 17.6°C | 83 mm | 69% | 5.4 m/s | 3.6 |
| 2002 | 22.7°C | 21.2°C | 19.8°C | 26.4°C | 17.1°C | 41 mm | 70% | 5 m/s | 3.6 |
| 2001 | 22.0°C | 20.8°C | 19.7°C | 24.8°C | 17.4°C | 127 mm | 70% | 5.2 m/s | 3.6 |
| 2000 | 22.7°C | 20.7°C | 18.7°C | 25.2°C | 16.2°C | 39 mm | 59% | 5.9 m/s | 4.1 |
| 1999 🌧️ | 23.8°C | 22.5°C | 21.2°C | 26.3°C | 18.3°C | 252 mm | 69% | 5.3 m/s | 3 |
| 1998 | 23.6°C | 22.1°C | 20.6°C | 27.9°C | 18.5°C | 78 mm | 71% | 4.8 m/s | 3.5 |
| 1997 | 21.6°C | 20.3°C | 19.1°C | 25.0°C | 16.4°C | 65 mm | 70% | 6 m/s | 3.2 |
| 1996 | 23.4°C | 21.6°C | 19.8°C | 26.7°C | 16.6°C | 45 mm | 63% | 5.3 m/s | 3.7 |
| 1995 | 21.7°C | 20.0°C | 18.4°C | 24.7°C | 16.7°C | 58 mm | 66% | 6.1 m/s | 3.9 |
| 1994 | 23.0°C | 21.5°C | 20.1°C | 27.1°C | 16.5°C | 58 mm | 69% | 5.2 m/s | 4 |
| 1993 | 21.3°C | 19.6°C | 18.0°C | 24.4°C | 16.2°C | 69 mm | 69% | 5.5 m/s | 3.8 |
| 1992 | 20.9°C | 19.7°C | 18.5°C | 22.6°C | 16.4°C | 12 mm | 66% | 5.3 m/s | 4 |
| 1991 | 22.4°C | 20.9°C | 19.4°C | 25.9°C | 17.6°C | 27 mm | 69% | 5 m/s | 3.4 |
| 1990 | 21.3°C | 19.9°C | 18.5°C | 24.6°C | 16.0°C | 83 mm | 71% | 5.5 m/s | 3.7 |
| 1989 | 23.3°C | 21.7°C | 20.1°C | 26.2°C | 17.4°C | 126 mm | 68% | 5.5 m/s | 3.7 |
| 1988 | 21.8°C | 20.6°C | 19.4°C | 26.6°C | 18.2°C | 110 mm | 71% | 5.5 m/s | 3.4 |
| 1987 ❄️ | 21.2°C | 19.4°C | 17.6°C | 24.7°C | 15.8°C | 50 mm | 66% | 5.4 m/s | 3.8 |
| 1986 | 20.9°C | 19.6°C | 18.2°C | 23.7°C | 15.2°C | 66 mm | 68% | 5.1 m/s | 3.6 |
| 1985 | 22.6°C | 20.7°C | 18.7°C | 25.3°C | 15.5°C | 23 mm | 64% | 5.3 m/s | 3.9 |
| 1984 | 22.1°C | 20.8°C | 19.5°C | 26.3°C | 17.5°C | 131 mm | 68% | 5.6 m/s | 3.3 |
| 1983 | 22.8°C | 21.1°C | 19.5°C | 25.5°C | 17.8°C | 12 mm | 67% | 5 m/s | — |
| 1982 | 21.4°C | 20.2°C | 19.0°C | 23.5°C | 16.2°C | 45 mm | 68% | 5.1 m/s | — |
| 1981 | 23.1°C | 21.3°C | 19.6°C | 26.7°C | 16.5°C | 121 mm | 65% | 6.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 22.4°C with lows near 19.3°C (mean 20.9°C), based on 45 years of NASA POWER data.
May averages 61 mm of rainfall in Geraldton, a relatively wet time of year. The wettest on record was 252 mm in 1999.
The hottest May reached 30°C in 2025. The coldest dipped to 14.5°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1°C. Daytime highs moved from 22.4°C to 23.5°C and overnight lows from 19.3°C to 20°C over the same span.
May is close to Geraldton's year-round average and a relatively wet time of year, so plan for around 22.4°C daytime highs and 19.3°C at night.
Not quite — May is the 7th coolest month in Geraldton, averaging 20.9°C.
For May in Geraldton, pack light layers you can adjust through the day, with typical highs of 22.4°C and lows of 19.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 67% — moderately humid.
Average wind speed in May is 5.4 m/s. The windiest May on record averaged 6.2 m/s (1981).
The wettest May on record was 1999 with 252 mm. On average, May sees 61 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 Geraldton 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.
