May is one of the cooler months of the year in Ballina, with average highs near 21.7°C and lows around 19.5°C (mean 20.6°C). It is a relatively wet time of year, averaging 117 mm of rainfall and 72% relative humidity across the period.
May is one of the cooler months of the year in Ballina. Across 45 years of records, the warmest May in Ballina was 2016 — when the month averaged 22°C — while the coldest were 1984 and 2011 at 19.6°C. Typical May days reach 21.7°C with nights near 19.5°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Ballina, averaging 117 mm of rainfall. The wettest May on record was 1996 with 543 mm, while the driest was 2016 at 18 mm.
Relative humidity in Ballina during May averages 72%. The most humid May was 2022 at 77%, and the least humid was 2004 at 66%.
May receives about 3.3 kWh/m²/day of solar energy in Ballina. The sunniest May was 2006 at 3.9 kWh/m²/day, and the cloudiest was 2022 at 2.4.
Average wind speed in Ballina during May is 5.1 m/s. The windiest May was 1996 at 6.7 m/s, while the calmest was 1982 at 4 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 | 20.6°C | 20.8°C | 20.7°C | +0.3°C |
| Avg High | 21.5°C | 21.6°C | 21.7°C | 22.0°C | 21.8°C | +0.3°C |
| Avg Low | 19.4°C | 19.5°C | 19.4°C | 19.5°C | 19.6°C | +0.2°C |
| Avg Rain | 151 mm | 180 mm | 96 mm | 65 mm | 84 mm | -67 mm |
May temperatures in Ballina have risen by about 0.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 12.2°C (1987) to a record high of 26.7°C (2016).
Rainfall in May is a relatively wet time of year, averaging 117 mm, with a wettest year of 543 mm.
A good time to visit Ballina
May is a good time to visit Ballina, with days averaging 21.7°C and nights around 19.5°C (mean 20.6°C, close to Ballina's yearly average) and higher rainfall. November and October are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 22.5°C | 21.5°C | 20.5°C | 25.3°C | 16.8°C | 131 mm | 76% | 5.4 m/s | 3.2 |
| 2024 | 22.2°C | 21.2°C | 20.3°C | 24.0°C | 17.2°C | 92 mm | 74% | 5.2 m/s | 3.1 |
| 2023 | 21.2°C | 19.7°C | 18.2°C | 24.0°C | 13.3°C | 52 mm | 67% | 5.1 m/s | 3.8 |
| 2022 | 22.2°C | 21.3°C | 20.5°C | 24.9°C | 16.2°C | 116 mm | 77% | 5.6 m/s | 2.4 |
| 2021 | 21.4°C | 20.3°C | 19.2°C | 24.0°C | 16.4°C | 65 mm | 73% | 4.5 m/s | 3.4 |
| 2020 | 21.4°C | 20.2°C | 19.1°C | 24.1°C | 15.0°C | 47 mm | 70% | 5.7 m/s | 3.3 |
| 2019 | 22.6°C | 21.2°C | 19.7°C | 25.1°C | 15.3°C | 25 mm | 68% | 4.6 m/s | 3.6 |
| 2018 | 22.3°C | 21.0°C | 19.7°C | 25.6°C | 15.6°C | 21 mm | 68% | 4.9 m/s | 3.7 |
| 2017 | 21.8°C | 20.7°C | 19.7°C | 23.8°C | 16.5°C | 52 mm | 74% | 4.2 m/s | 3.3 |
| 2016 🔥 | 23.6°C | 22.0°C | 20.4°C | 26.7°C | 15.4°C | 18 mm | 67% | 4.1 m/s | 3.8 |
| 2015 | 22.1°C | 20.8°C | 19.5°C | 24.8°C | 15.3°C | 123 mm | 72% | 4.9 m/s | 3.5 |
| 2014 | 22.3°C | 21.2°C | 20.0°C | 25.2°C | 14.6°C | 49 mm | 69% | 4.3 m/s | 3.3 |
| 2013 | 21.2°C | 20.2°C | 19.2°C | 24.2°C | 15.5°C | 140 mm | 71% | 5.2 m/s | 3.2 |
| 2012 | 21.4°C | 20.2°C | 18.9°C | 25.0°C | 16.1°C | 62 mm | 69% | 4.3 m/s | 3.7 |
| 2011 | 20.8°C | 19.6°C | 18.3°C | 22.4°C | 15.1°C | 68 mm | 72% | 5.5 m/s | 3.5 |
| 2010 | 22.0°C | 20.9°C | 19.7°C | 25.3°C | 15.9°C | 91 mm | 71% | 5.3 m/s | 3.3 |
| 2009 | 21.3°C | 20.5°C | 19.7°C | 22.2°C | 17.8°C | 285 mm | 71% | 5.7 m/s | 3.1 |
| 2008 | 21.2°C | 20.0°C | 18.8°C | 23.4°C | 13.9°C | 59 mm | 71% | 4.8 m/s | 3.7 |
| 2007 | 23.0°C | 21.9°C | 20.9°C | 26.0°C | 18.6°C | 31 mm | 71% | 4.2 m/s | 3.5 |
| 2006 | 21.1°C | 19.9°C | 18.7°C | 24.2°C | 15.9°C | 38 mm | 67% | 4.2 m/s | 3.9 |
| 2005 | 21.9°C | 20.8°C | 19.7°C | 26.3°C | 17.5°C | 128 mm | 72% | 6.2 m/s | 3.3 |
| 2004 | 21.9°C | 20.5°C | 19.1°C | 23.9°C | 16.1°C | 20 mm | 66% | 4.4 m/s | 3.8 |
| 2003 | 21.8°C | 20.7°C | 19.5°C | 25.6°C | 17.1°C | 147 mm | 71% | 5.4 m/s | 3.3 |
| 2002 | 21.9°C | 20.7°C | 19.5°C | 25.2°C | 16.2°C | 62 mm | 69% | 5.2 m/s | 3.5 |
| 2001 | 21.5°C | 20.4°C | 19.3°C | 24.8°C | 15.6°C | 131 mm | 72% | 5.4 m/s | 3.5 |
| 2000 | 21.6°C | 20.4°C | 19.2°C | 25.0°C | 12.4°C | 65 mm | 73% | 5.7 m/s | 3.3 |
| 1999 | 21.7°C | 20.8°C | 19.8°C | 24.4°C | 18.2°C | 144 mm | 76% | 5.6 m/s | 3 |
| 1998 | 22.9°C | 21.5°C | 20.1°C | 25.2°C | 16.8°C | 110 mm | 71% | 4.6 m/s | 3.4 |
| 1997 | 21.6°C | 20.5°C | 19.4°C | 24.0°C | 15.8°C | 156 mm | 77% | 6.1 m/s | 3 |
| 1996 🌧️ | 21.6°C | 20.7°C | 19.8°C | 24.2°C | 16.9°C | 543 mm | 75% | 6.7 m/s | 2.9 |
| 1995 | 21.7°C | 20.7°C | 19.6°C | 24.9°C | 16.4°C | 137 mm | 75% | 5.4 m/s | 3.1 |
| 1994 | 21.2°C | 19.9°C | 18.6°C | 24.2°C | 15.7°C | 126 mm | 69% | 4.7 m/s | 3.7 |
| 1993 | 21.6°C | 20.7°C | 19.8°C | 24.3°C | 18.0°C | 57 mm | 73% | 5 m/s | 3.3 |
| 1992 | 20.9°C | 20.0°C | 19.0°C | 23.2°C | 16.0°C | 108 mm | 76% | 4.7 m/s | 3 |
| 1991 | 21.1°C | 20.3°C | 19.4°C | 25.0°C | 16.6°C | 175 mm | 76% | 5.3 m/s | 3.1 |
| 1990 | 21.7°C | 20.6°C | 19.4°C | 24.1°C | 15.2°C | 246 mm | 77% | 4.7 m/s | 3.3 |
| 1989 | 22.0°C | 21.2°C | 20.5°C | 23.7°C | 17.2°C | 151 mm | 75% | 5.1 m/s | 2.9 |
| 1988 | 21.6°C | 20.5°C | 19.4°C | 23.5°C | 16.0°C | 27 mm | 73% | 5.1 m/s | 3.3 |
| 1987 | 21.5°C | 20.2°C | 19.0°C | 23.5°C | 12.2°C | 271 mm | 75% | 5.1 m/s | 3 |
| 1986 | 21.8°C | 20.7°C | 19.6°C | 24.8°C | 16.4°C | 151 mm | 74% | 5.7 m/s | 3.2 |
| 1985 | 21.3°C | 20.3°C | 19.4°C | 25.0°C | 15.1°C | 220 mm | 75% | 6.1 m/s | 3.2 |
| 1984 ❄️ | 20.7°C | 19.6°C | 18.6°C | 22.3°C | 15.8°C | 92 mm | 69% | 4.1 m/s | 3.5 |
| 1983 | 21.7°C | 20.6°C | 19.5°C | 23.3°C | 15.7°C | 219 mm | 72% | 4.7 m/s | — |
| 1982 | 22.0°C | 20.8°C | 19.7°C | 24.1°C | 17.0°C | 96 mm | 67% | 4 m/s | — |
| 1981 | 21.3°C | 20.0°C | 18.7°C | 24.8°C | 16.0°C | 135 mm | 71% | 5.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 21.7°C with lows near 19.5°C (mean 20.6°C), based on 45 years of NASA POWER data.
May averages 117 mm of rainfall in Ballina, a relatively wet time of year. The wettest on record was 543 mm in 1996.
The hottest May reached 26.7°C in 2016. The coldest dipped to 12.2°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.5°C. Daytime highs moved from 21.4°C to 21.9°C and overnight lows from 19.2°C to 19.7°C over the same span.
May is one of the cooler months of the year in Ballina and a relatively wet time of year, so plan for around 21.7°C daytime highs and 19.5°C at night.
Not quite — May is the 5th coolest month in Ballina, averaging 20.6°C.
For May in Ballina, pack light layers you can adjust through the day, with typical highs of 21.7°C and lows of 19.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 72% — moderately humid.
Average wind speed in May is 5.1 m/s. The windiest May on record averaged 6.7 m/s (1996).
The wettest May on record was 1996 with 543 mm. On average, May sees 117 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 Ballina 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.
