May is one of the cooler months of the year in Gladstone, with average highs near 24.9°C and lows around 16.1°C (mean 20.5°C). It is one of the drier months, averaging 49 mm of rainfall and 73% relative humidity across the period.
May is one of the cooler months of the year in Gladstone. Across 45 years of records, the warmest Mays in Gladstone were 2007 and 2016 — when the month averaged 22.5°C — while the coldest was 2011 at 17.9°C. Typical May days reach 24.9°C with nights near 16.1°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Gladstone, averaging 49 mm of rainfall. The wettest May on record was 1983 with 264 mm, while the driest was 1984 at 5 mm.
Relative humidity in Gladstone during May averages 73%. The most humid May was 1983 at 87%, and the least humid was 2001 at 60%.
May receives about 3.9 kWh/m²/day of solar energy in Gladstone. The sunniest May was 2001 at 4.6 kWh/m²/day, and the cloudiest were 1989 and 2022 at 3.3.
Average wind speed in Gladstone during May is 2.9 m/s. The windiest Mays were 1983 and 2000 at 3.5 m/s, while the calmest was 2001 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.4°C | 20.6°C | 20.8°C | 20.2°C | 20.7°C | +0.3°C |
| Avg High | 24.5°C | 24.7°C | 25.5°C | 24.7°C | 25.4°C | +0.9°C |
| Avg Low | 16.3°C | 16.5°C | 16.0°C | 15.6°C | 16.1°C | -0.2°C |
| Avg Rain | 83 mm | 61 mm | 26 mm | 31 mm | 43 mm | -40 mm |
May temperatures in Gladstone have risen by about 0.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 6.9°C (2000) to a record high of 31.1°C (2007).
Rainfall in May is one of the drier months, averaging 49 mm, with a wettest year of 264 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
One of the best times to visit Gladstone
May is one of the best times to visit Gladstone. Expect days averaging 24.9°C and nights around 16.1°C (mean 20.5°C) — cooler than Gladstone's yearly average — with moderate rainfall (49 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 | 25.6°C | 21.4°C | 17.3°C | 29.3°C | 13.6°C | 51 mm | 76% | 3 m/s | 3.6 |
| 2024 | 25.4°C | 21.1°C | 16.7°C | 27.8°C | 10.6°C | 18 mm | 75% | 3.2 m/s | 3.9 |
| 2023 | 25.3°C | 19.6°C | 13.9°C | 28.6°C | 8.8°C | 27 mm | 62% | 2.7 m/s | 4.4 |
| 2022 | 25.3°C | 21.9°C | 18.5°C | 29.0°C | 13.8°C | 136 mm | 83% | 3.1 m/s | 3.3 |
| 2021 | 25.8°C | 20.5°C | 15.2°C | 29.6°C | 11.5°C | 8 mm | 67% | 2.8 m/s | 4.3 |
| 2020 | 24.8°C | 19.9°C | 14.9°C | 29.2°C | 7.9°C | 19 mm | 65% | 2.9 m/s | 3.9 |
| 2019 | 25.6°C | 21.0°C | 16.4°C | 28.8°C | 11.2°C | 9 mm | 68% | 3.1 m/s | 4 |
| 2018 | 25.7°C | 20.8°C | 15.9°C | 29.4°C | 11.1°C | 16 mm | 67% | 3 m/s | 4.1 |
| 2017 | 24.9°C | 20.7°C | 16.6°C | 27.2°C | 13.9°C | 33 mm | 80% | 2.8 m/s | 3.9 |
| 2016 | 27.7°C | 22.5°C | 17.3°C | 30.8°C | 12.1°C | 9 mm | 67% | 2.3 m/s | 4.2 |
| 2015 | 25.4°C | 20.2°C | 15.1°C | 29.5°C | 8.9°C | 23 mm | 71% | 2.7 m/s | 4.4 |
| 2014 | 23.7°C | 20.1°C | 16.5°C | 26.3°C | 9.8°C | 30 mm | 77% | 2.8 m/s | 4 |
| 2013 | 22.8°C | 19.0°C | 15.2°C | 25.9°C | 9.8°C | 92 mm | 77% | 2.9 m/s | 3.8 |
| 2012 | 24.4°C | 19.6°C | 14.8°C | 28.6°C | 9.0°C | 40 mm | 72% | 3 m/s | 4 |
| 2011 ❄️ | 22.3°C | 17.9°C | 13.5°C | 25.0°C | 8.8°C | 40 mm | 76% | 2.6 m/s | 4.3 |
| 2010 | 24.7°C | 19.8°C | 14.9°C | 28.2°C | 10.2°C | 18 mm | 70% | 2.3 m/s | 4.1 |
| 2009 | 24.2°C | 19.9°C | 15.6°C | 26.5°C | 11.9°C | 21 mm | 72% | 2.9 m/s | 3.7 |
| 2008 | 24.4°C | 19.8°C | 15.1°C | 28.6°C | 9.9°C | 52 mm | 70% | 2.9 m/s | 4 |
| 2007 🔥 | 26.8°C | 22.5°C | 18.2°C | 31.1°C | 13.2°C | 26 mm | 72% | 2.9 m/s | 4.2 |
| 2006 | 25.7°C | 20.9°C | 16.0°C | 29.2°C | 8.6°C | 11 mm | 65% | 2.6 m/s | 4 |
| 2005 | 25.7°C | 20.6°C | 15.4°C | 29.6°C | 10.5°C | 30 mm | 65% | 2.8 m/s | 4.2 |
| 2004 | 26.1°C | 21.0°C | 15.9°C | 29.4°C | 10.5°C | 6 mm | 64% | 2.6 m/s | 4.1 |
| 2003 | 25.6°C | 20.7°C | 15.9°C | 30.6°C | 11.3°C | 19 mm | 70% | 3 m/s | 4 |
| 2002 | 26.1°C | 21.2°C | 16.3°C | 30.3°C | 8.9°C | 28 mm | 64% | 3 m/s | 4.1 |
| 2001 | 26.3°C | 20.7°C | 15.1°C | 29.0°C | 9.5°C | 20 mm | 60% | 2.2 m/s | 4.6 |
| 2000 | 24.2°C | 20.3°C | 16.4°C | 27.6°C | 6.9°C | 51 mm | 76% | 3.5 m/s | 3.7 |
| 1999 | 26.2°C | 21.6°C | 16.9°C | 29.3°C | 13.9°C | 21 mm | 73% | 3.4 m/s | 4 |
| 1998 | 25.4°C | 21.0°C | 16.7°C | 27.7°C | 9.2°C | 63 mm | 72% | 2.8 m/s | 3.9 |
| 1997 | 24.3°C | 20.1°C | 15.8°C | 26.9°C | 9.2°C | 77 mm | 75% | 2.7 m/s | 3.8 |
| 1996 | 23.8°C | 20.0°C | 16.1°C | 26.4°C | 10.9°C | 72 mm | 79% | 2.7 m/s | 3.7 |
| 1995 | 24.7°C | 21.0°C | 17.3°C | 28.2°C | 8.5°C | 60 mm | 74% | 2.9 m/s | 3.6 |
| 1994 | 25.2°C | 20.2°C | 15.2°C | 28.3°C | 10.5°C | 21 mm | 71% | 2.4 m/s | 4 |
| 1993 | 25.2°C | 21.1°C | 17.0°C | 28.7°C | 14.7°C | 29 mm | 73% | 3.1 m/s | 4 |
| 1992 | 23.6°C | 20.1°C | 16.5°C | 26.9°C | 9.5°C | 107 mm | 81% | 2.7 m/s | 3.5 |
| 1991 | 25.3°C | 21.3°C | 17.3°C | 28.7°C | 14.1°C | 43 mm | 74% | 3.1 m/s | 3.9 |
| 1990 | 22.9°C | 19.4°C | 16.0°C | 25.6°C | 12.2°C | 119 mm | 85% | 2.7 m/s | 3.7 |
| 1989 | 23.3°C | 20.5°C | 17.7°C | 25.7°C | 13.4°C | 150 mm | 86% | 3.4 m/s | 3.3 |
| 1988 | 25.0°C | 20.5°C | 16.0°C | 29.7°C | 10.9°C | 65 mm | 71% | 2.8 m/s | 3.9 |
| 1987 | 25.1°C | 20.8°C | 16.5°C | 27.7°C | 7.9°C | 32 mm | 75% | 2.9 m/s | 3.9 |
| 1986 | 24.5°C | 20.4°C | 16.3°C | 27.4°C | 9.8°C | 70 mm | 76% | 2.6 m/s | 3.9 |
| 1985 | 24.6°C | 20.3°C | 16.0°C | 28.8°C | 10.4°C | 19 mm | 74% | 3.4 m/s | 3.8 |
| 1984 | 25.2°C | 20.4°C | 15.7°C | 27.1°C | 10.5°C | 5 mm | 66% | 3 m/s | 4 |
| 1983 🌧️ | 22.6°C | 19.8°C | 17.1°C | 24.8°C | 10.5°C | 264 mm | 87% | 3.5 m/s | — |
| 1982 | 25.7°C | 20.9°C | 16.1°C | 28.4°C | 11.0°C | 34 mm | 66% | 2.5 m/s | — |
| 1981 | 24.3°C | 19.8°C | 15.2°C | 28.7°C | 10.4°C | 113 mm | 72% | 3.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 24.9°C with lows near 16.1°C (mean 20.5°C), based on 45 years of NASA POWER data.
May averages 49 mm of rainfall in Gladstone, one of the drier months. The wettest on record was 264 mm in 1983.
The hottest May reached 31.1°C in 2007. The coldest dipped to 6.9°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.7°C. Daytime highs moved from 24.5°C to 25.5°C and overnight lows from 16°C to 16.3°C over the same span.
May is one of the cooler months of the year in Gladstone and one of the drier months, so plan for around 24.9°C daytime highs and 16.1°C at night.
Not quite — May is the 4th coolest month in Gladstone, averaging 20.5°C.
For May in Gladstone, pack light layers you can adjust through the day, with typical highs of 24.9°C and lows of 16.1°C.
Relative humidity in May averages 73% — moderately humid.
Average wind speed in May is 2.9 m/s. The windiest May on record averaged 3.5 m/s (1983).
The wettest May on record was 1983 with 264 mm. On average, May sees 49 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 Gladstone 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.
