May is one of the cooler months of the year in Toowoomba, with average highs near 21.8°C and lows around 10°C (mean 15.9°C). It is about average for rainfall, averaging 50 mm of rainfall and 73% relative humidity across the period.
May is one of the cooler months of the year in Toowoomba. Across 45 years of records, the warmest Mays in Toowoomba were 2007 and 2016 — when the month averaged 18.5°C — while the coldest was 2011 at 13.9°C. Typical May days reach 21.8°C with nights near 10°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Toowoomba, averaging 50 mm of rainfall. The wettest May on record was 1996 with 272 mm, while the driest was 2006 at 7 mm.
Relative humidity in Toowoomba during May averages 73%. The most humid May was 1983 at 88%, and the least humid was 2016 at 56%.
May receives about 3.8 kWh/m²/day of solar energy in Toowoomba. The sunniest May was 2006 at 4.4 kWh/m²/day, and the cloudiest was 2022 at 2.7.
Average wind speed in Toowoomba during May is 2.1 m/s. The windiest May was 2000 at 2.7 m/s, while the calmest were 2006, 2012 and 2017 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.6°C | 16.0°C | 15.9°C | 15.9°C | 16.0°C | +0.4°C |
| Avg High | 21.0°C | 21.6°C | 22.3°C | 22.2°C | 21.8°C | +0.8°C |
| Avg Low | 10.2°C | 10.5°C | 9.6°C | 9.6°C | 10.2°C | 0°C |
| Avg Rain | 62 mm | 78 mm | 25 mm | 34 mm | 51 mm | -11 mm |
May temperatures in Toowoomba have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 0°C (1987) to a record high of 31.3°C (2007).
Rainfall in May is about average for rainfall, averaging 50 mm, with a wettest year of 272 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
A quieter season to visit Toowoomba
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Toowoomba. That said, May — with days averaging 21.8°C and nights around 10°C (mean 15.9°C) and moderate rainfall (50 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 22.4°C | 17.1°C | 11.9°C | 27.9°C | 7.0°C | 60 mm | 78% | 2.3 m/s | 3.5 |
| 2024 | 22.6°C | 16.7°C | 10.9°C | 24.9°C | 6.4°C | 17 mm | 77% | 2 m/s | 3.7 |
| 2023 | 21.7°C | 14.6°C | 7.4°C | 25.5°C | 1.4°C | 45 mm | 64% | 2.1 m/s | 4.3 |
| 2022 | 20.7°C | 16.9°C | 13.0°C | 25.7°C | 8.3°C | 132 mm | 86% | 2.6 m/s | 2.7 |
| 2021 | 21.7°C | 15.3°C | 9.0°C | 26.2°C | 2.4°C | 40 mm | 75% | 2 m/s | 4 |
| 2020 | 21.6°C | 15.4°C | 9.2°C | 25.5°C | 2.7°C | 14 mm | 68% | 2.3 m/s | 3.8 |
| 2019 | 22.8°C | 16.2°C | 9.7°C | 26.6°C | 0.8°C | 11 mm | 67% | 2.2 m/s | 3.8 |
| 2018 | 23.2°C | 16.4°C | 9.6°C | 27.2°C | 3.8°C | 14 mm | 64% | 2.2 m/s | 4.2 |
| 2017 | 23.0°C | 17.0°C | 11.0°C | 26.6°C | 4.7°C | 17 mm | 74% | 1.8 m/s | 3.8 |
| 2016 | 25.9°C | 18.5°C | 11.0°C | 29.3°C | 4.1°C | 10 mm | 56% | 1.9 m/s | 4.1 |
| 2015 | 21.5°C | 15.5°C | 9.5°C | 25.7°C | 1.9°C | 93 mm | 77% | 2.1 m/s | 3.8 |
| 2014 | 21.7°C | 16.0°C | 10.2°C | 26.1°C | 3.3°C | 25 mm | 75% | 2 m/s | 3.8 |
| 2013 | 20.4°C | 14.8°C | 9.2°C | 26.7°C | 3.7°C | 34 mm | 77% | 2.2 m/s | 3.6 |
| 2012 | 21.7°C | 15.1°C | 8.5°C | 26.0°C | 2.8°C | 27 mm | 72% | 1.8 m/s | 4 |
| 2011 ❄️ | 19.9°C | 13.9°C | 8.0°C | 24.6°C | 3.2°C | 69 mm | 76% | 2 m/s | 3.9 |
| 2010 | 21.4°C | 15.5°C | 9.5°C | 26.1°C | 4.6°C | 37 mm | 72% | 1.9 m/s | 3.6 |
| 2009 | 20.9°C | 15.6°C | 10.2°C | 23.7°C | 5.5°C | 71 mm | 77% | 2.1 m/s | 3.6 |
| 2008 | 22.4°C | 15.7°C | 8.9°C | 25.5°C | 4.1°C | 16 mm | 66% | 1.9 m/s | 4 |
| 2007 🔥 | 24.9°C | 18.5°C | 12.1°C | 31.3°C | 6.7°C | 14 mm | 68% | 1.9 m/s | 3.9 |
| 2006 | 22.5°C | 15.6°C | 8.6°C | 26.3°C | 2.7°C | 7 mm | 59% | 1.8 m/s | 4.4 |
| 2005 | 22.7°C | 16.1°C | 9.6°C | 29.2°C | 3.5°C | 25 mm | 66% | 2.1 m/s | 4 |
| 2004 | 22.4°C | 15.3°C | 8.2°C | 25.9°C | 2.4°C | 11 mm | 65% | 1.9 m/s | 4.1 |
| 2003 | 21.8°C | 15.8°C | 9.8°C | 29.4°C | 3.8°C | 28 mm | 72% | 2.2 m/s | 3.9 |
| 2002 | 22.3°C | 15.7°C | 9.1°C | 27.3°C | 3.2°C | 14 mm | 64% | 2.1 m/s | 4 |
| 2001 | 21.5°C | 15.2°C | 8.8°C | 25.8°C | 3.1°C | 26 mm | 69% | 2 m/s | 3.9 |
| 2000 | 21.9°C | 16.0°C | 10.2°C | 27.9°C | 0.3°C | 37 mm | 73% | 2.7 m/s | 3.8 |
| 1999 | 22.3°C | 16.8°C | 11.4°C | 27.0°C | 7.2°C | 37 mm | 78% | 2.4 m/s | 3.6 |
| 1998 | 21.3°C | 15.7°C | 10.1°C | 25.5°C | 3.4°C | 87 mm | 78% | 2.2 m/s | 3.7 |
| 1997 | 21.6°C | 16.1°C | 10.7°C | 24.8°C | 5.3°C | 67 mm | 77% | 2 m/s | 3.4 |
| 1996 🌧️ | 19.9°C | 15.4°C | 10.9°C | 24.7°C | 5.1°C | 272 mm | 85% | 2.3 m/s | 3.6 |
| 1995 | 21.4°C | 16.0°C | 10.5°C | 27.7°C | 3.7°C | 44 mm | 76% | 2.1 m/s | 3.6 |
| 1994 | 22.5°C | 15.5°C | 8.4°C | 26.0°C | 3.1°C | 16 mm | 62% | 1.9 m/s | 4.2 |
| 1993 | 22.5°C | 16.6°C | 10.7°C | 28.0°C | 6.8°C | 43 mm | 74% | 1.9 m/s | 3.9 |
| 1992 | 20.4°C | 15.2°C | 9.9°C | 25.9°C | 4.0°C | 65 mm | 80% | 2 m/s | 3.5 |
| 1991 | 22.6°C | 17.1°C | 11.6°C | 27.6°C | 7.8°C | 34 mm | 75% | 2.1 m/s | 3.7 |
| 1990 | 21.0°C | 15.8°C | 10.7°C | 24.9°C | 6.3°C | 115 mm | 82% | 2 m/s | 3.7 |
| 1989 | 20.4°C | 16.4°C | 12.5°C | 24.5°C | 5.7°C | 71 mm | 88% | 2.4 m/s | 3.3 |
| 1988 | 20.0°C | 14.9°C | 9.9°C | 23.9°C | 3.9°C | 22 mm | 83% | 2.1 m/s | 3.8 |
| 1987 | 21.5°C | 16.0°C | 10.5°C | 25.1°C | 0.0°C | 60 mm | 77% | 2.1 m/s | 3.6 |
| 1986 | 21.9°C | 16.3°C | 10.6°C | 25.6°C | 3.8°C | 77 mm | 76% | 2.1 m/s | 3.8 |
| 1985 | 21.2°C | 15.6°C | 10.0°C | 25.7°C | 4.1°C | 40 mm | 78% | 2.3 m/s | 3.8 |
| 1984 | 20.8°C | 14.7°C | 8.7°C | 23.8°C | 2.7°C | 16 mm | 75% | 1.9 m/s | 3.9 |
| 1983 | 19.5°C | 15.2°C | 10.9°C | 22.0°C | 4.5°C | 187 mm | 88% | 2.5 m/s | — |
| 1982 | 22.2°C | 15.8°C | 9.3°C | 25.7°C | 3.6°C | 31 mm | 68% | 1.9 m/s | — |
| 1981 | 21.2°C | 15.3°C | 9.3°C | 25.1°C | 4.7°C | 54 mm | 73% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 21.8°C with lows near 10°C (mean 15.9°C), based on 45 years of NASA POWER data.
May averages 50 mm of rainfall in Toowoomba, about average for rainfall. The wettest on record was 272 mm in 1996.
The hottest May reached 31.3°C in 2007. The coldest dipped to 0°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 21°C to 21.8°C and overnight lows from 9.6°C to 10.4°C over the same span.
May is one of the cooler months of the year in Toowoomba and about average for rainfall, so plan for around 21.8°C daytime highs and 10°C at night.
Not quite — May is the 4th coolest month in Toowoomba, averaging 15.9°C.
For May in Toowoomba, pack light layers you can adjust through the day, with typical highs of 21.8°C and lows of 10°C.
Relative humidity in May averages 73% — moderately humid.
Average wind speed in May is 2.1 m/s. The windiest May on record averaged 2.7 m/s (2000).
The wettest May on record was 1996 with 272 mm. On average, May sees 50 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 Toowoomba 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.
