May is one of the cooler months of the year in Dalby, with average highs near 23.1°C and lows around 10.3°C (mean 16.7°C). It is one of the drier months, averaging 38 mm of rainfall and 70% relative humidity across the period.
May is one of the cooler months of the year in Dalby. Across 45 years of records, the warmest May in Dalby was 2007 — when the month averaged 19.3°C — while the coldest was 2011 at 14.6°C. Typical May days reach 23.1°C with nights near 10.3°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Dalby, averaging 38 mm of rainfall. The wettest May on record was 1983 with 177 mm, while the driest was 2006 at 5 mm.
Relative humidity in Dalby during May averages 70%. The most humid May was 1983 at 87%, and the least humid was 2016 at 52%.
May receives about 3.8 kWh/m²/day of solar energy in Dalby. The sunniest May was 2006 at 4.4 kWh/m²/day, and the cloudiest was 2022 at 2.7.
Average wind speed in Dalby during May is 2.5 m/s. The windiest May was 2000 at 3.1 m/s, while the calmest were 2006, 2016 and 2017, among others at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.5°C | 16.9°C | 16.8°C | 16.6°C | 16.9°C | +0.4°C |
| Avg High | 22.5°C | 22.9°C | 23.6°C | 23.3°C | 23.2°C | +0.7°C |
| Avg Low | 10.5°C | 10.8°C | 10.0°C | 9.9°C | 10.5°C | 0°C |
| Avg Rain | 54 mm | 57 mm | 16 mm | 28 mm | 40 mm | -14 mm |
May temperatures in Dalby have risen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -0.1°C (2000) to a record high of 32.2°C (2007).
Rainfall in May is one of the drier months, averaging 38 mm, with a wettest year of 177 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 Dalby
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Dalby. That said, May — with days averaging 23.1°C and nights around 10.3°C (mean 16.7°C) and moderate rainfall (38 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 | 24.3°C | 18.3°C | 12.2°C | 29.1°C | 7.2°C | 44 mm | 72% | 2.7 m/s | 3.5 |
| 2024 | 23.8°C | 17.6°C | 11.3°C | 26.0°C | 4.6°C | 10 mm | 74% | 2.5 m/s | 3.7 |
| 2023 | 22.7°C | 15.1°C | 7.6°C | 26.6°C | 1.6°C | 38 mm | 62% | 2.4 m/s | 4.3 |
| 2022 | 22.5°C | 18.0°C | 13.4°C | 27.7°C | 9.0°C | 98 mm | 81% | 3 m/s | 2.7 |
| 2021 | 22.8°C | 16.0°C | 9.2°C | 27.2°C | 2.6°C | 33 mm | 72% | 2.3 m/s | 4 |
| 2020 | 22.8°C | 16.1°C | 9.5°C | 26.8°C | 2.0°C | 16 mm | 64% | 2.7 m/s | 3.8 |
| 2019 | 24.3°C | 17.1°C | 10.0°C | 28.5°C | 1.5°C | 9 mm | 63% | 2.6 m/s | 3.8 |
| 2018 | 24.1°C | 17.0°C | 9.9°C | 28.7°C | 4.0°C | 16 mm | 62% | 2.5 m/s | 4.2 |
| 2017 | 24.4°C | 17.9°C | 11.5°C | 27.7°C | 5.1°C | 14 mm | 70% | 2.2 m/s | 3.8 |
| 2016 | 26.9°C | 19.2°C | 11.6°C | 30.8°C | 4.3°C | 6 mm | 52% | 2.2 m/s | 4.1 |
| 2015 | 22.6°C | 16.2°C | 9.7°C | 27.2°C | 2.5°C | 67 mm | 74% | 2.4 m/s | 3.8 |
| 2014 | 22.9°C | 16.6°C | 10.4°C | 27.1°C | 3.2°C | 21 mm | 73% | 2.4 m/s | 3.8 |
| 2013 | 22.0°C | 15.8°C | 9.6°C | 28.6°C | 4.1°C | 37 mm | 73% | 2.6 m/s | 3.6 |
| 2012 | 22.8°C | 15.8°C | 8.7°C | 26.8°C | 3.3°C | 26 mm | 69% | 2.3 m/s | 4 |
| 2011 ❄️ | 20.9°C | 14.6°C | 8.2°C | 26.0°C | 2.4°C | 54 mm | 74% | 2.3 m/s | 3.9 |
| 2010 | 22.4°C | 16.0°C | 9.7°C | 27.3°C | 3.8°C | 26 mm | 70% | 2.3 m/s | 3.6 |
| 2009 | 22.8°C | 16.8°C | 10.8°C | 25.2°C | 6.5°C | 27 mm | 71% | 2.4 m/s | 3.6 |
| 2008 | 23.9°C | 16.7°C | 9.4°C | 26.8°C | 4.1°C | 15 mm | 58% | 2.4 m/s | 4 |
| 2007 🔥 | 26.1°C | 19.3°C | 12.4°C | 32.2°C | 6.2°C | 11 mm | 63% | 2.3 m/s | 3.9 |
| 2006 | 23.8°C | 16.4°C | 9.0°C | 27.3°C | 2.8°C | 5 mm | 54% | 2.2 m/s | 4.4 |
| 2005 | 23.7°C | 16.8°C | 9.8°C | 30.0°C | 3.0°C | 24 mm | 64% | 2.5 m/s | 4 |
| 2004 | 23.2°C | 16.1°C | 8.9°C | 26.6°C | 2.6°C | 8 mm | 63% | 2.2 m/s | 4.1 |
| 2003 | 22.8°C | 16.4°C | 10.0°C | 30.0°C | 4.0°C | 18 mm | 71% | 2.5 m/s | 3.9 |
| 2002 | 23.5°C | 16.7°C | 9.8°C | 28.4°C | 3.5°C | 11 mm | 58% | 2.4 m/s | 4 |
| 2001 | 22.8°C | 15.9°C | 9.0°C | 26.9°C | 3.0°C | 15 mm | 65% | 2.3 m/s | 3.9 |
| 2000 | 23.5°C | 17.1°C | 10.6°C | 30.0°C | -0.1°C | 25 mm | 69% | 3.1 m/s | 3.8 |
| 1999 | 24.2°C | 18.0°C | 11.7°C | 28.6°C | 8.6°C | 16 mm | 72% | 2.8 m/s | 3.6 |
| 1998 | 21.6°C | 15.8°C | 10.1°C | 25.2°C | 3.3°C | 89 mm | 78% | 2.4 m/s | 3.7 |
| 1997 | 22.6°C | 16.8°C | 10.9°C | 26.5°C | 4.9°C | 64 mm | 74% | 2.4 m/s | 3.4 |
| 1996 | 21.2°C | 16.1°C | 10.9°C | 25.4°C | 4.4°C | 156 mm | 82% | 2.5 m/s | 3.6 |
| 1995 | 22.7°C | 16.7°C | 10.8°C | 28.8°C | 2.1°C | 42 mm | 73% | 2.5 m/s | 3.6 |
| 1994 | 24.0°C | 16.4°C | 8.9°C | 27.3°C | 3.5°C | 10 mm | 56% | 2.2 m/s | 4.2 |
| 1993 | 24.1°C | 17.7°C | 11.3°C | 29.2°C | 6.8°C | 25 mm | 68% | 2.5 m/s | 3.9 |
| 1992 | 22.3°C | 16.3°C | 10.3°C | 27.5°C | 4.2°C | 53 mm | 75% | 2.4 m/s | 3.5 |
| 1991 | 24.4°C | 18.2°C | 12.0°C | 29.1°C | 8.7°C | 26 mm | 69% | 2.6 m/s | 3.7 |
| 1990 | 22.4°C | 16.6°C | 10.8°C | 26.0°C | 6.0°C | 83 mm | 79% | 2.2 m/s | 3.7 |
| 1989 | 22.3°C | 17.5°C | 12.6°C | 25.8°C | 4.3°C | 50 mm | 83% | 2.8 m/s | 3.3 |
| 1988 | 21.8°C | 15.9°C | 10.0°C | 25.3°C | 4.5°C | 27 mm | 78% | 2.5 m/s | 3.8 |
| 1987 | 22.9°C | 16.8°C | 10.7°C | 27.2°C | 0.3°C | 48 mm | 73% | 2.5 m/s | 3.6 |
| 1986 | 23.4°C | 17.3°C | 11.2°C | 26.8°C | 4.0°C | 57 mm | 72% | 2.5 m/s | 3.8 |
| 1985 | 23.1°C | 16.7°C | 10.3°C | 28.0°C | 3.8°C | 25 mm | 71% | 2.8 m/s | 3.8 |
| 1984 | 22.3°C | 15.8°C | 9.2°C | 25.6°C | 2.8°C | 12 mm | 71% | 2.3 m/s | 3.9 |
| 1983 🌧️ | 20.4°C | 15.7°C | 11.0°C | 22.6°C | 4.3°C | 177 mm | 87% | 2.9 m/s | — |
| 1982 | 23.6°C | 16.6°C | 9.5°C | 27.0°C | 3.5°C | 32 mm | 64% | 2.3 m/s | — |
| 1981 | 22.4°C | 16.0°C | 9.7°C | 26.2°C | 4.5°C | 58 mm | 70% | 2.9 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 23.1°C with lows near 10.3°C (mean 16.7°C), based on 45 years of NASA POWER data.
May averages 38 mm of rainfall in Dalby, one of the drier months. The wettest on record was 177 mm in 1983.
The hottest May reached 32.2°C in 2007. The coldest dipped to -0.1°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.8°C. Daytime highs moved from 22.4°C to 23.2°C and overnight lows from 9.9°C to 10.7°C over the same span.
May is one of the cooler months of the year in Dalby and one of the drier months, so plan for around 23.1°C daytime highs and 10.3°C at night.
Not quite — May is the 4th coolest month in Dalby, averaging 16.7°C.
For May in Dalby, pack light layers you can adjust through the day, with typical highs of 23.1°C and lows of 10.3°C.
Relative humidity in May averages 70% — moderately humid.
Average wind speed in May is 2.5 m/s. The windiest May on record averaged 3.1 m/s (2000).
The wettest May on record was 1983 with 177 mm. On average, May sees 38 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 Dalby 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.
