May is one of the cooler months of the year in Ouyen, with average highs near 19.4°C and lows around 7.9°C (mean 13.7°C). It is about average for rainfall, averaging 25 mm of rainfall and 67% relative humidity across the period.
May is one of the cooler months of the year in Ouyen. Across 45 years of records, the warmest May in Ouyen was 1988 — when the month averaged 15.6°C — while the coldest was 2006 at 11.9°C. Typical May days reach 19.4°C with nights near 7.9°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Ouyen, averaging 25 mm of rainfall. The wettest May on record was 1989 with 76 mm, while the driest was 1991 at 0 mm.
Relative humidity in Ouyen during May averages 67%. The most humid May was 1989 at 76%, and the least humid was 2005 at 57%.
May receives about 2.9 kWh/m²/day of solar energy in Ouyen. The sunniest May was 2025 at 3.4 kWh/m²/day, and the cloudiest were 1988, 1997 and 2014 at 2.6.
Average wind speed in Ouyen during May is 2.6 m/s. The windiest Mays were 1994 and 2016 at 3.2 m/s, while the calmest were 1992 and 2008 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.8°C | 13.6°C | 13.6°C | 13.8°C | 13.4°C | -0.4°C |
| Avg High | 19.5°C | 19.3°C | 19.5°C | 19.4°C | 19.3°C | -0.2°C |
| Avg Low | 8.0°C | 7.8°C | 7.8°C | 8.2°C | 7.5°C | -0.5°C |
| Avg Rain | 36 mm | 25 mm | 21 mm | 24 mm | 13 mm | -23 mm |
May temperatures in Ouyen have stayed relatively stable across the record.
May has ranged from a record low of 0.9°C (2021) to a record high of 30.9°C (1997).
Rainfall in May is about average for rainfall, averaging 25 mm, with a wettest year of 76 mm.
A quieter season to visit Ouyen
If your dates are flexible, the more temperate months of March and December tend to be the most comfortable for visiting Ouyen. That said, May — with days averaging 19.4°C and nights around 7.9°C (mean 13.7°C) and low rainfall (25 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 | 20.7°C | 14.2°C | 7.7°C | 27.1°C | 3.1°C | 2 mm | 61% | 2.6 m/s | 3.4 |
| 2024 | 20.1°C | 14.0°C | 7.9°C | 23.0°C | 3.1°C | 20 mm | 65% | 2.2 m/s | 3.1 |
| 2023 | 18.5°C | 12.7°C | 7.0°C | 23.5°C | 3.1°C | 11 mm | 68% | 2.6 m/s | 2.8 |
| 2022 | 18.7°C | 13.6°C | 8.5°C | 23.2°C | 4.3°C | 23 mm | 72% | 2.6 m/s | 2.7 |
| 2021 | 19.7°C | 13.6°C | 7.5°C | 28.3°C | 0.9°C | 12 mm | 63% | 2.8 m/s | 2.9 |
| 2020 | 17.8°C | 12.1°C | 6.3°C | 26.0°C | 2.8°C | 11 mm | 70% | 2.9 m/s | 3 |
| 2019 | 20.0°C | 14.1°C | 8.2°C | 26.2°C | 3.0°C | 35 mm | 66% | 3 m/s | 3 |
| 2018 | 19.7°C | 14.1°C | 8.4°C | 25.8°C | 3.8°C | 17 mm | 65% | 3.1 m/s | 2.7 |
| 2017 | 19.2°C | 13.1°C | 7.1°C | 23.5°C | 2.5°C | 20 mm | 66% | 2.3 m/s | 3 |
| 2016 | 20.4°C | 14.9°C | 9.4°C | 27.6°C | 3.4°C | 26 mm | 65% | 3.2 m/s | 2.8 |
| 2015 | 19.3°C | 13.7°C | 8.1°C | 24.7°C | 3.4°C | 21 mm | 70% | 3.1 m/s | 3 |
| 2014 | 20.7°C | 15.3°C | 10.0°C | 25.8°C | 3.1°C | 24 mm | 70% | 2.5 m/s | 2.6 |
| 2013 | 19.4°C | 13.8°C | 8.2°C | 27.1°C | 4.5°C | 33 mm | 67% | 2.6 m/s | 2.8 |
| 2012 | 19.1°C | 13.1°C | 7.1°C | 25.9°C | 3.8°C | 6 mm | 67% | 2.7 m/s | 3.1 |
| 2011 | 17.3°C | 12.0°C | 6.6°C | 23.8°C | 2.5°C | 21 mm | 72% | 2.5 m/s | 2.8 |
| 2010 | 19.3°C | 13.8°C | 8.4°C | 26.2°C | 3.7°C | 40 mm | 69% | 2.2 m/s | 2.8 |
| 2009 | 19.3°C | 13.9°C | 8.4°C | 22.2°C | 5.3°C | 26 mm | 72% | 2.6 m/s | 3 |
| 2008 | 19.8°C | 13.7°C | 7.6°C | 24.0°C | 3.4°C | 21 mm | 66% | 2.1 m/s | 2.9 |
| 2007 | 20.8°C | 15.3°C | 9.8°C | 26.3°C | 5.0°C | 49 mm | 69% | 3.1 m/s | 2.9 |
| 2006 ❄️ | 17.8°C | 11.9°C | 5.9°C | 22.4°C | 1.6°C | 12 mm | 70% | 2.4 m/s | 2.9 |
| 2005 | 21.4°C | 14.7°C | 8.0°C | 26.3°C | 2.8°C | 2 mm | 57% | 2.2 m/s | 3.2 |
| 2004 | 18.9°C | 12.6°C | 6.4°C | 23.9°C | 3.3°C | 12 mm | 65% | 2.6 m/s | 3 |
| 2003 | 19.9°C | 14.1°C | 8.4°C | 25.5°C | 3.2°C | 28 mm | 65% | 2.5 m/s | 2.8 |
| 2002 | 20.3°C | 14.2°C | 8.1°C | 28.2°C | 4.1°C | 20 mm | 60% | 2.4 m/s | 3 |
| 2001 | 19.2°C | 13.6°C | 8.1°C | 28.8°C | 3.4°C | 14 mm | 65% | 2.3 m/s | 2.9 |
| 2000 | 17.8°C | 12.3°C | 6.9°C | 23.1°C | 2.8°C | 24 mm | 71% | 2.9 m/s | 3 |
| 1999 | 20.3°C | 14.3°C | 8.4°C | 25.7°C | 1.8°C | 37 mm | 58% | 2.6 m/s | 3 |
| 1998 | 19.2°C | 13.4°C | 7.7°C | 25.2°C | 3.1°C | 9 mm | 66% | 2.4 m/s | 2.9 |
| 1997 | 19.2°C | 13.6°C | 8.0°C | 30.9°C | 1.4°C | 24 mm | 67% | 2.4 m/s | 2.6 |
| 1996 | 19.8°C | 13.8°C | 7.7°C | 25.6°C | 3.5°C | 7 mm | 68% | 2.3 m/s | 3 |
| 1995 | 18.1°C | 12.9°C | 7.7°C | 25.8°C | 3.9°C | 50 mm | 73% | 2.6 m/s | 2.8 |
| 1994 | 19.8°C | 13.7°C | 7.7°C | 26.7°C | 3.0°C | 7 mm | 61% | 3.2 m/s | 3.1 |
| 1993 | 19.9°C | 14.0°C | 8.0°C | 27.5°C | 2.8°C | 13 mm | 64% | 2.2 m/s | 2.9 |
| 1992 | 18.0°C | 12.8°C | 7.6°C | 26.6°C | 3.5°C | 74 mm | 73% | 2.1 m/s | 2.7 |
| 1991 | 19.7°C | 13.5°C | 7.3°C | 24.4°C | 3.9°C | 0 mm | 66% | 2.3 m/s | 3.1 |
| 1990 | 19.1°C | 13.5°C | 8.0°C | 27.1°C | 3.1°C | 34 mm | 68% | 2.7 m/s | 2.9 |
| 1989 🌧️ | 19.1°C | 13.7°C | 8.4°C | 24.0°C | 3.6°C | 76 mm | 76% | 2.6 m/s | 2.8 |
| 1988 🔥 | 21.0°C | 15.6°C | 10.3°C | 28.3°C | 5.0°C | 51 mm | 70% | 2.6 m/s | 2.6 |
| 1987 | 18.6°C | 13.1°C | 7.5°C | 24.8°C | 2.9°C | 42 mm | 70% | 2.9 m/s | 2.8 |
| 1986 | 19.3°C | 13.4°C | 7.6°C | 25.1°C | 3.5°C | 48 mm | 69% | 2.6 m/s | 2.8 |
| 1985 | 19.7°C | 13.9°C | 8.0°C | 29.4°C | 2.8°C | 23 mm | 64% | 2.7 m/s | 3 |
| 1984 | 20.0°C | 13.7°C | 7.5°C | 25.9°C | 3.0°C | 6 mm | 61% | 2.3 m/s | 3.1 |
| 1983 | 19.3°C | 13.7°C | 8.1°C | 24.0°C | 3.0°C | 25 mm | 73% | 2.8 m/s | — |
| 1982 | 19.2°C | 13.3°C | 7.3°C | 25.2°C | 2.1°C | 9 mm | 59% | 2.6 m/s | — |
| 1981 | 19.2°C | 13.4°C | 7.5°C | 27.4°C | 2.3°C | 46 mm | 65% | 3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 19.4°C with lows near 7.9°C (mean 13.7°C), based on 45 years of NASA POWER data.
May averages 25 mm of rainfall in Ouyen, about average for rainfall. The wettest on record was 76 mm in 1989.
The hottest May reached 30.9°C in 1997. The coldest dipped to 0.9°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have held steady by about 0°C. Daytime highs moved from 19.5°C to 19.5°C and overnight lows from 7.7°C to 7.7°C over the same span.
May is one of the cooler months of the year in Ouyen and about average for rainfall, so plan for around 19.4°C daytime highs and 7.9°C at night.
Not quite — May is the 4th coolest month in Ouyen, averaging 13.7°C.
For May in Ouyen, pack warm layers and a jacket for chilly mornings, with typical highs of 19.4°C and lows of 7.9°C.
Relative humidity in May averages 67% — moderately humid.
Average wind speed in May is 2.6 m/s. The windiest May on record averaged 3.2 m/s (1994).
The wettest May on record was 1989 with 76 mm. On average, May sees 25 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 Ouyen 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.
