May is one of the cooler months of the year in Smithton, with average highs near 13.7°C and lows around 8.9°C (mean 11.3°C). It is a relatively wet time of year, averaging 117 mm of rainfall and 86% relative humidity across the period.
May is one of the cooler months of the year in Smithton. Across 45 years of records, the warmest May in Smithton was 2007 — when the month averaged 12.9°C — while the coldest was 2006 at 9.8°C. Typical May days reach 13.7°C with nights near 8.9°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Smithton, averaging 117 mm of rainfall. The wettest May on record was 2007 with 243 mm, while the driest was 2025 at 40 mm.
Relative humidity in Smithton during May averages 86%. The most humid May was 1995 at 89%, and the least humid was 2025 at 79%.
May receives about 2 kWh/m²/day of solar energy in Smithton. The sunniest Mays were 2009 and 2025 at 2.3 kWh/m²/day, and the cloudiest was 1988 at 1.7.
Average wind speed in Smithton during May is 2.6 m/s. The windiest May was 2016 at 3.5 m/s, while the calmest was 1991 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.5°C | 10.9°C | 11.4°C | 11.3°C | 11.6°C | +0.1°C |
| Avg High | 13.9°C | 13.2°C | 13.8°C | 13.6°C | 14.1°C | +0.2°C |
| Avg Low | 9.2°C | 8.7°C | 8.9°C | 9.0°C | 9.1°C | -0.1°C |
| Avg Rain | 139 mm | 124 mm | 117 mm | 121 mm | 66 mm | -73 mm |
May temperatures in Smithton have risen by about 0.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 2.9°C (1981) to a record high of 21.9°C (2002).
Rainfall in May is a relatively wet time of year, averaging 117 mm, with a wettest year of 243 mm.
A good time to visit Smithton
May is a good time to visit Smithton, with days averaging 13.7°C and nights around 8.9°C (mean 11.3°C, close to Smithton's yearly average) and higher rainfall. February and January 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 | 15.0°C | 12.3°C | 9.6°C | 20.0°C | 4.8°C | 40 mm | 79% | 2.5 m/s | 2.3 |
| 2024 | 14.9°C | 12.0°C | 9.0°C | 17.4°C | 4.0°C | 47 mm | 83% | 2.4 m/s | 2.2 |
| 2023 | 13.4°C | 11.2°C | 9.0°C | 16.1°C | 3.9°C | 92 mm | 82% | 3 m/s | 2.1 |
| 2022 | 14.3°C | 12.0°C | 9.8°C | 18.3°C | 6.3°C | 90 mm | 83% | 2.6 m/s | 2 |
| 2021 | 13.9°C | 11.2°C | 8.4°C | 18.7°C | 4.0°C | 61 mm | 82% | 2.8 m/s | 2.1 |
| 2020 | 12.9°C | 10.8°C | 8.7°C | 15.7°C | 5.5°C | 66 mm | 87% | 2.7 m/s | 2 |
| 2019 | 14.0°C | 11.8°C | 9.6°C | 18.1°C | 6.2°C | 101 mm | 85% | 2.9 m/s | 1.9 |
| 2018 | 13.9°C | 11.5°C | 9.1°C | 18.2°C | 4.6°C | 73 mm | 83% | 3 m/s | 1.9 |
| 2017 | 13.9°C | 11.4°C | 8.8°C | 17.2°C | 5.6°C | 98 mm | 84% | 2.5 m/s | 1.9 |
| 2016 | 14.1°C | 11.8°C | 9.6°C | 17.2°C | 4.9°C | 139 mm | 84% | 3.5 m/s | 1.9 |
| 2015 | 12.9°C | 10.7°C | 8.5°C | 17.2°C | 5.3°C | 193 mm | 86% | 3.4 m/s | 2 |
| 2014 | 14.1°C | 11.8°C | 9.6°C | 17.0°C | 4.9°C | 132 mm | 88% | 2.4 m/s | 1.9 |
| 2013 | 13.8°C | 11.4°C | 9.0°C | 20.1°C | 5.6°C | 126 mm | 86% | 2.4 m/s | 2.1 |
| 2012 | 13.0°C | 11.1°C | 9.1°C | 17.3°C | 5.5°C | 174 mm | 88% | 2.8 m/s | 2 |
| 2011 | 12.6°C | 10.2°C | 7.8°C | 16.8°C | 5.1°C | 80 mm | 86% | 2.3 m/s | 2.1 |
| 2010 | 13.7°C | 11.2°C | 8.6°C | 17.6°C | 4.0°C | 98 mm | 85% | 2.4 m/s | 2.1 |
| 2009 | 13.5°C | 11.2°C | 8.8°C | 16.4°C | 4.1°C | 109 mm | 87% | 2.8 m/s | 2.3 |
| 2008 | 13.7°C | 11.4°C | 9.0°C | 16.0°C | 4.5°C | 108 mm | 87% | 2.3 m/s | 1.8 |
| 2007 🔥 🌧️ | 15.1°C | 12.9°C | 10.6°C | 17.8°C | 6.7°C | 243 mm | 86% | 3.2 m/s | 1.8 |
| 2006 ❄️ | 12.5°C | 9.8°C | 7.1°C | 14.5°C | 3.6°C | 113 mm | 86% | 2.5 m/s | 2.1 |
| 2005 | 13.5°C | 11.3°C | 9.0°C | 18.1°C | 6.3°C | 76 mm | 84% | 2.8 m/s | 2 |
| 2004 | 13.1°C | 10.5°C | 8.0°C | 15.7°C | 3.3°C | 136 mm | 86% | 2.9 m/s | 2.1 |
| 2003 | 14.6°C | 11.9°C | 9.3°C | 17.6°C | 3.7°C | 74 mm | 87% | 2.2 m/s | 2.1 |
| 2002 | 14.8°C | 11.9°C | 8.9°C | 21.9°C | 5.0°C | 88 mm | 83% | 2.1 m/s | 2.2 |
| 2001 | 14.0°C | 11.2°C | 8.4°C | 16.6°C | 4.2°C | 52 mm | 83% | 2 m/s | 2.2 |
| 2000 | 13.4°C | 11.4°C | 9.5°C | 18.1°C | 4.7°C | 170 mm | 84% | 3.3 m/s | 1.9 |
| 1999 | 14.3°C | 12.3°C | 10.4°C | 19.0°C | 5.9°C | 194 mm | 88% | 2.6 m/s | 1.8 |
| 1998 | 13.2°C | 10.8°C | 8.4°C | 15.7°C | 6.2°C | 114 mm | 87% | 2.6 m/s | 1.9 |
| 1997 | 13.1°C | 10.8°C | 8.5°C | 18.4°C | 5.6°C | 173 mm | 87% | 2.3 m/s | 1.9 |
| 1996 | 13.2°C | 11.0°C | 8.7°C | 17.2°C | 5.5°C | 62 mm | 87% | 2.5 m/s | 2 |
| 1995 | 12.4°C | 10.0°C | 7.7°C | 15.0°C | 4.1°C | 94 mm | 89% | 2.3 m/s | 2.1 |
| 1994 | 12.7°C | 10.4°C | 8.2°C | 16.1°C | 3.9°C | 203 mm | 84% | 3.4 m/s | 2 |
| 1993 | 13.3°C | 11.1°C | 8.9°C | 17.4°C | 4.5°C | 115 mm | 86% | 2.6 m/s | 2 |
| 1992 | 13.3°C | 11.1°C | 8.9°C | 18.4°C | 4.5°C | 147 mm | 88% | 2.3 m/s | 1.9 |
| 1991 | 13.8°C | 11.0°C | 8.2°C | 17.1°C | 5.4°C | 44 mm | 88% | 1.9 m/s | 2.1 |
| 1990 | 13.1°C | 10.9°C | 8.7°C | 17.6°C | 5.0°C | 97 mm | 86% | 2.7 m/s | 2.2 |
| 1989 | 14.2°C | 11.7°C | 9.2°C | 18.2°C | 4.2°C | 129 mm | 85% | 2.5 m/s | 2 |
| 1988 | 15.0°C | 12.8°C | 10.6°C | 20.5°C | 7.2°C | 188 mm | 88% | 2.4 m/s | 1.7 |
| 1987 | 13.6°C | 11.2°C | 8.7°C | 17.6°C | 4.3°C | 188 mm | 88% | 2.7 m/s | 1.9 |
| 1986 | 13.5°C | 11.0°C | 8.6°C | 18.7°C | 4.9°C | 131 mm | 87% | 2.3 m/s | 2 |
| 1985 | 14.1°C | 11.6°C | 9.2°C | 19.9°C | 4.6°C | 152 mm | 87% | 2.5 m/s | 2.2 |
| 1984 | 13.9°C | 11.6°C | 9.2°C | 17.5°C | 5.2°C | 99 mm | 88% | 2.4 m/s | 2.1 |
| 1983 | 13.8°C | 11.5°C | 9.2°C | 15.9°C | 4.3°C | 105 mm | 88% | 2.6 m/s | — |
| 1982 | 13.2°C | 11.1°C | 9.1°C | 16.9°C | 4.5°C | 163 mm | 84% | 3.1 m/s | — |
| 1981 | 13.8°C | 11.3°C | 8.8°C | 17.5°C | 2.9°C | 97 mm | 86% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 13.7°C with lows near 8.9°C (mean 11.3°C), based on 45 years of NASA POWER data.
May averages 117 mm of rainfall in Smithton, a relatively wet time of year. The wettest on record was 243 mm in 2007.
The hottest May reached 21.9°C in 2002. The coldest dipped to 2.9°C in 1981.
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 13.8°C to 14.3°C and overnight lows from 9.1°C to 9.2°C over the same span.
May is one of the cooler months of the year in Smithton and a relatively wet time of year, so plan for around 13.7°C daytime highs and 8.9°C at night.
Not quite — May is the 6th coolest month in Smithton, averaging 11.3°C.
For May in Smithton, pack light layers you can adjust through the day, with typical highs of 13.7°C and lows of 8.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 86% — quite humid.
Average wind speed in May is 2.6 m/s. The windiest May on record averaged 3.5 m/s (2016).
The wettest May on record was 2007 with 243 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 Smithton 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.
