May is one of the cooler months of the year in Goulburn, with average highs near 15.8°C and lows around 6.6°C (mean 11.2°C). It is one of the drier months, averaging 61 mm of rainfall and 80% relative humidity across the period.
May is one of the cooler months of the year in Goulburn. Across 45 years of records, the warmest May in Goulburn was 2007 — when the month averaged 13.1°C — while the coldest was 2012 at 9.5°C. Typical May days reach 15.8°C with nights near 6.6°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Goulburn, averaging 61 mm of rainfall. The wettest May on record was 1983 with 167 mm, while the driest was 1982 at 7 mm.
Relative humidity in Goulburn during May averages 80%. The most humid May was 1989 at 92%, and the least humid was 1982 at 67%.
May receives about 2.9 kWh/m²/day of solar energy in Goulburn. The sunniest Mays were 2004 and 2012 at 3.3 kWh/m²/day, and the cloudiest was 1995 at 2.4.
Average wind speed in Goulburn during May is 1.1 m/s. The windiest May was 2016 at 1.7 m/s, while the calmest was 1991 at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.0°C | 11.3°C | 11.4°C | 11.2°C | 10.9°C | -0.1°C |
| Avg High | 15.3°C | 15.7°C | 16.3°C | 16.1°C | 15.2°C | -0.1°C |
| Avg Low | 6.7°C | 6.9°C | 6.6°C | 6.2°C | 6.6°C | -0.1°C |
| Avg Rain | 78 mm | 79 mm | 46 mm | 39 mm | 70 mm | -8 mm |
May temperatures in Goulburn have risen by about 0.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -1°C (1982) to a record high of 25°C (2019).
Rainfall in May is one of the drier months, averaging 61 mm, with a wettest year of 167 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows fell 0.1°C per decade, widening the gap between day and night.
A quieter season to visit Goulburn
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Goulburn. That said, May — with days averaging 15.8°C and nights around 6.6°C (mean 11.2°C) and moderate rainfall (61 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 | 16.6°C | 12.2°C | 7.9°C | 21.7°C | 4.3°C | 97 mm | 83% | 1.1 m/s | 2.8 |
| 2024 | 15.1°C | 11.2°C | 7.2°C | 18.2°C | 1.0°C | 100 mm | 87% | 0.9 m/s | 2.9 |
| 2023 | 14.5°C | 9.6°C | 4.8°C | 18.2°C | 1.1°C | 18 mm | 78% | 1.3 m/s | 3 |
| 2022 | 14.9°C | 11.1°C | 7.3°C | 20.8°C | 1.7°C | 77 mm | 87% | 1.1 m/s | 2.6 |
| 2021 | 15.2°C | 10.7°C | 6.2°C | 20.9°C | -0.6°C | 89 mm | 83% | 1.1 m/s | 3 |
| 2020 | 14.7°C | 10.3°C | 5.9°C | 21.0°C | 1.5°C | 38 mm | 81% | 1.2 m/s | 3 |
| 2019 | 17.5°C | 12.0°C | 6.5°C | 25.0°C | 1.3°C | 8 mm | 70% | 1.3 m/s | 3 |
| 2018 | 17.6°C | 11.9°C | 6.2°C | 24.1°C | 2.9°C | 10 mm | 67% | 1.2 m/s | 3.1 |
| 2017 | 16.3°C | 11.2°C | 6.0°C | 19.3°C | 1.5°C | 21 mm | 78% | 1 m/s | 3.2 |
| 2016 | 17.8°C | 12.4°C | 7.1°C | 24.4°C | 0.9°C | 42 mm | 68% | 1.7 m/s | 3 |
| 2015 | 14.8°C | 10.5°C | 6.3°C | 20.5°C | 1.3°C | 43 mm | 82% | 1.4 m/s | 2.8 |
| 2014 | 16.5°C | 11.8°C | 7.1°C | 21.6°C | 2.8°C | 28 mm | 79% | 1.1 m/s | 3.1 |
| 2013 | 15.9°C | 11.0°C | 6.1°C | 20.9°C | 2.3°C | 52 mm | 79% | 1.2 m/s | 3 |
| 2012 ❄️ | 14.4°C | 9.5°C | 4.6°C | 19.8°C | 1.5°C | 19 mm | 81% | 1.1 m/s | 3.3 |
| 2011 | 14.7°C | 9.9°C | 5.2°C | 19.9°C | -0.2°C | 52 mm | 78% | 1.1 m/s | 3 |
| 2010 | 15.9°C | 11.3°C | 6.6°C | 22.5°C | 2.3°C | 117 mm | 81% | 0.9 m/s | 3 |
| 2009 | 15.9°C | 11.5°C | 7.1°C | 19.4°C | 3.3°C | 42 mm | 80% | 1.2 m/s | 2.9 |
| 2008 | 17.4°C | 11.6°C | 5.9°C | 21.3°C | 3.2°C | 9 mm | 73% | 1 m/s | 3.2 |
| 2007 🔥 | 18.5°C | 13.1°C | 7.8°C | 22.7°C | 1.4°C | 28 mm | 73% | 1.3 m/s | 3 |
| 2006 | 15.8°C | 10.7°C | 5.7°C | 19.8°C | 1.6°C | 50 mm | 75% | 1.1 m/s | 3.1 |
| 2005 | 17.0°C | 12.0°C | 7.0°C | 22.7°C | 2.8°C | 42 mm | 76% | 1 m/s | 3.2 |
| 2004 | 16.6°C | 11.0°C | 5.4°C | 20.8°C | 0.4°C | 21 mm | 70% | 1.3 m/s | 3.3 |
| 2003 | 15.3°C | 11.6°C | 7.9°C | 20.4°C | 2.9°C | 147 mm | 85% | 1.1 m/s | 2.9 |
| 2002 | 15.6°C | 11.2°C | 6.8°C | 22.7°C | 2.1°C | 49 mm | 79% | 1.1 m/s | 2.7 |
| 2001 | 15.8°C | 11.0°C | 6.2°C | 20.7°C | 2.9°C | 29 mm | 79% | 1 m/s | 3 |
| 2000 | 15.4°C | 10.6°C | 5.8°C | 20.8°C | 0.8°C | 41 mm | 79% | 1.3 m/s | 2.7 |
| 1999 | 17.6°C | 12.3°C | 7.0°C | 21.5°C | -0.2°C | 21 mm | 76% | 1.1 m/s | 3.1 |
| 1998 | 15.1°C | 11.3°C | 7.4°C | 18.2°C | 1.4°C | 114 mm | 81% | 1.4 m/s | 2.7 |
| 1997 | 16.4°C | 11.9°C | 7.5°C | 24.0°C | -0.5°C | 68 mm | 79% | 1 m/s | 2.8 |
| 1996 | 15.6°C | 11.4°C | 7.2°C | 20.8°C | 1.2°C | 101 mm | 85% | 1.1 m/s | 2.8 |
| 1995 | 14.8°C | 11.2°C | 7.5°C | 22.1°C | 3.0°C | 167 mm | 86% | 1.2 m/s | 2.4 |
| 1994 | 14.8°C | 10.3°C | 5.7°C | 21.0°C | 1.6°C | 28 mm | 76% | 1.5 m/s | 3.1 |
| 1993 | 16.9°C | 11.5°C | 6.1°C | 21.9°C | 1.8°C | 29 mm | 74% | 1 m/s | 3.1 |
| 1992 | 15.0°C | 10.7°C | 6.4°C | 20.7°C | 0.4°C | 50 mm | 83% | 0.9 m/s | 3 |
| 1991 | 16.2°C | 11.5°C | 6.7°C | 21.9°C | 1.8°C | 58 mm | 79% | 0.8 m/s | 3 |
| 1990 | 15.1°C | 11.1°C | 7.1°C | 19.7°C | 1.8°C | 151 mm | 87% | 1 m/s | 2.9 |
| 1989 | 15.1°C | 11.8°C | 8.6°C | 19.0°C | 1.1°C | 99 mm | 92% | 1 m/s | 2.6 |
| 1988 | 15.2°C | 11.3°C | 7.4°C | 20.0°C | 2.9°C | 78 mm | 88% | 1 m/s | 2.6 |
| 1987 | 15.4°C | 10.9°C | 6.4°C | 21.1°C | -0.4°C | 63 mm | 80% | 1.2 m/s | 2.8 |
| 1986 | 16.0°C | 11.3°C | 6.6°C | 20.4°C | 2.2°C | 39 mm | 80% | 1 m/s | 3 |
| 1985 | 14.8°C | 10.7°C | 6.6°C | 21.4°C | 1.4°C | 89 mm | 86% | 1 m/s | 2.9 |
| 1984 | 14.5°C | 10.3°C | 6.1°C | 19.1°C | 2.0°C | 57 mm | 86% | 0.9 m/s | 3 |
| 1983 🌧️ | 14.8°C | 10.9°C | 7.0°C | 19.0°C | 0.7°C | 167 mm | 86% | 1.4 m/s | — |
| 1982 | 16.7°C | 10.9°C | 5.0°C | 20.8°C | -1.0°C | 7 mm | 67% | 1.2 m/s | — |
| 1981 | 15.4°C | 10.8°C | 6.3°C | 20.3°C | 1.1°C | 103 mm | 80% | 1.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.8°C with lows near 6.6°C (mean 11.2°C), based on 45 years of NASA POWER data.
May averages 61 mm of rainfall in Goulburn, one of the drier months. The wettest on record was 167 mm in 1983.
The hottest May reached 25°C in 2019. The coldest dipped to -1°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.3°C. Daytime highs moved from 15.2°C to 15.3°C and overnight lows from 6.2°C to 6.7°C over the same span.
May is one of the cooler months of the year in Goulburn and one of the drier months, so plan for around 15.8°C daytime highs and 6.6°C at night.
Not quite — May is the 5th coolest month in Goulburn, averaging 11.2°C.
For May in Goulburn, pack warm layers and a jacket for chilly mornings, with typical highs of 15.8°C and lows of 6.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 80% — quite humid.
Average wind speed in May is 1.1 m/s. The windiest May on record averaged 1.7 m/s (2016).
The wettest May on record was 1983 with 167 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 Goulburn 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.
