May is one of the cooler months of the year in Forster, with average highs near 19.9°C and lows around 14.2°C (mean 17°C). It is about average for rainfall, averaging 99 mm of rainfall and 75% relative humidity across the period.
May is one of the cooler months of the year in Forster. Across 45 years of records, the warmest May in Forster was 2016 — when the month averaged 19°C — while the coldest was 1984 at 15.8°C. Typical May days reach 19.9°C with nights near 14.2°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in Forster, averaging 99 mm of rainfall. The wettest May on record was 1996 with 283 mm, while the driest was 2016 at 9 mm.
Relative humidity in Forster during May averages 75%. The most humid May was 1990 at 83%, and the least humid was 2016 at 63%.
May receives about 2.9 kWh/m²/day of solar energy in Forster. The sunniest Mays were 2004, 2007 and 2023 at 3.4 kWh/m²/day, and the cloudiest was 1997 at 2.5.
Average wind speed in Forster during May is 2.3 m/s. The windiest Mays were 1998, 2001 and 2011, among others at 2.6 m/s, while the calmest were 1984 and 2007 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.9°C | 17.2°C | 16.9°C | 17.3°C | 17.0°C | +0.1°C |
| Avg High | 19.7°C | 19.7°C | 19.7°C | 20.5°C | 19.6°C | -0.1°C |
| Avg Low | 14.1°C | 14.6°C | 14.1°C | 14.2°C | 14.4°C | +0.3°C |
| Avg Rain | 101 mm | 131 mm | 109 mm | 60 mm | 89 mm | -12 mm |
May temperatures in Forster have risen by about 0.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 7.2°C (2000) to a record high of 27°C (2007).
Rainfall in May is about average for rainfall, averaging 99 mm, with a wettest year of 283 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0°C per decade, widening the gap between day and night.
A quieter season to visit Forster
If your dates are flexible, the more temperate months of December and November tend to be the most comfortable for visiting Forster. That said, May — with days averaging 19.9°C and nights around 14.2°C (mean 17°C) and higher rainfall (99 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 | 20.3°C | 18.3°C | 16.2°C | 24.1°C | 12.0°C | 209 mm | 80% | 2.5 m/s | 2.6 |
| 2024 | 19.4°C | 17.1°C | 14.8°C | 21.5°C | 10.0°C | 124 mm | 82% | 2.2 m/s | 2.7 |
| 2023 | 19.9°C | 16.3°C | 12.6°C | 24.2°C | 9.1°C | 36 mm | 67% | 2.4 m/s | 3.4 |
| 2022 | 20.2°C | 17.6°C | 15.0°C | 24.8°C | 10.7°C | 62 mm | 77% | 2.2 m/s | 2.8 |
| 2021 | 19.2°C | 16.6°C | 14.0°C | 23.1°C | 8.4°C | 54 mm | 79% | 2.2 m/s | 3 |
| 2020 | 18.7°C | 16.1°C | 13.5°C | 22.7°C | 8.6°C | 48 mm | 77% | 2.5 m/s | 3 |
| 2019 | 22.1°C | 18.3°C | 14.5°C | 26.7°C | 7.3°C | 21 mm | 66% | 2.3 m/s | 3.2 |
| 2018 | 20.7°C | 17.4°C | 14.1°C | 24.9°C | 10.8°C | 12 mm | 68% | 2.3 m/s | 3.2 |
| 2017 | 20.2°C | 17.3°C | 14.4°C | 23.6°C | 8.6°C | 34 mm | 77% | 2 m/s | 3 |
| 2016 🔥 | 23.0°C | 19.0°C | 15.1°C | 27.0°C | 8.8°C | 9 mm | 63% | 2.2 m/s | 3.3 |
| 2015 | 19.3°C | 16.8°C | 14.2°C | 24.2°C | 9.2°C | 170 mm | 78% | 2.4 m/s | 2.8 |
| 2014 | 21.6°C | 18.2°C | 14.8°C | 25.5°C | 9.7°C | 21 mm | 70% | 2 m/s | 3.3 |
| 2013 | 19.3°C | 16.5°C | 13.7°C | 24.8°C | 9.8°C | 136 mm | 75% | 2.3 m/s | 3.1 |
| 2012 | 19.6°C | 16.3°C | 12.9°C | 24.3°C | 10.4°C | 30 mm | 73% | 2.2 m/s | 3.2 |
| 2011 | 18.7°C | 15.9°C | 13.2°C | 21.8°C | 9.4°C | 95 mm | 76% | 2.6 m/s | 2.9 |
| 2010 | 20.8°C | 17.7°C | 14.6°C | 26.3°C | 11.1°C | 69 mm | 73% | 2.3 m/s | 2.8 |
| 2009 | 19.0°C | 16.9°C | 14.8°C | 21.2°C | 11.4°C | 160 mm | 76% | 2.5 m/s | 2.9 |
| 2008 | 18.8°C | 16.0°C | 13.1°C | 22.0°C | 10.3°C | 35 mm | 77% | 2 m/s | 3.2 |
| 2007 | 22.0°C | 18.4°C | 14.8°C | 27.0°C | 10.1°C | 39 mm | 72% | 1.9 m/s | 3.4 |
| 2006 | 20.0°C | 16.6°C | 13.2°C | 25.1°C | 9.1°C | 43 mm | 67% | 2.2 m/s | 3.2 |
| 2005 | 19.5°C | 16.9°C | 14.3°C | 24.0°C | 10.1°C | 151 mm | 76% | 2.5 m/s | 2.8 |
| 2004 | 20.7°C | 16.9°C | 13.2°C | 24.0°C | 8.7°C | 19 mm | 65% | 2.4 m/s | 3.4 |
| 2003 | 19.5°C | 17.1°C | 14.8°C | 24.0°C | 10.2°C | 249 mm | 79% | 2.5 m/s | 2.8 |
| 2002 | 19.9°C | 17.2°C | 14.5°C | 23.2°C | 10.7°C | 84 mm | 73% | 2.4 m/s | 2.9 |
| 2001 | 18.3°C | 16.1°C | 14.0°C | 22.7°C | 10.1°C | 266 mm | 81% | 2.6 m/s | 2.7 |
| 2000 | 19.7°C | 16.8°C | 14.0°C | 23.9°C | 7.2°C | 47 mm | 76% | 2.4 m/s | 3 |
| 1999 | 20.1°C | 17.7°C | 15.2°C | 23.0°C | 10.9°C | 70 mm | 80% | 2 m/s | 2.8 |
| 1998 | 19.4°C | 16.8°C | 14.3°C | 22.1°C | 9.3°C | 156 mm | 77% | 2.6 m/s | 2.6 |
| 1997 | 19.8°C | 17.5°C | 15.2°C | 24.5°C | 12.2°C | 133 mm | 81% | 2.6 m/s | 2.5 |
| 1996 🌧️ | 19.4°C | 17.2°C | 15.0°C | 23.4°C | 10.4°C | 283 mm | 80% | 2.6 m/s | 2.6 |
| 1995 | 19.6°C | 17.0°C | 14.5°C | 24.8°C | 8.8°C | 178 mm | 79% | 2.5 m/s | 2.7 |
| 1994 | 20.2°C | 16.9°C | 13.5°C | 25.0°C | 9.5°C | 85 mm | 68% | 2.1 m/s | 3.2 |
| 1993 | 20.3°C | 17.4°C | 14.4°C | 25.2°C | 11.5°C | 35 mm | 74% | 2 m/s | 2.8 |
| 1992 | 18.7°C | 16.4°C | 14.1°C | 21.5°C | 10.5°C | 58 mm | 79% | 2.1 m/s | 2.8 |
| 1991 | 20.1°C | 17.7°C | 15.3°C | 26.8°C | 13.0°C | 141 mm | 79% | 2 m/s | 2.6 |
| 1990 | 19.6°C | 17.1°C | 14.5°C | 22.9°C | 11.2°C | 174 mm | 83% | 2.2 m/s | 2.9 |
| 1989 | 19.8°C | 17.7°C | 15.5°C | 22.5°C | 9.7°C | 124 mm | 83% | 2.1 m/s | 2.7 |
| 1988 | 19.6°C | 17.1°C | 14.6°C | 22.7°C | 11.4°C | 50 mm | 79% | 2.1 m/s | 2.8 |
| 1987 | 19.5°C | 16.6°C | 13.7°C | 24.2°C | 7.6°C | 147 mm | 77% | 2.3 m/s | 2.8 |
| 1986 | 20.5°C | 17.6°C | 14.7°C | 24.5°C | 11.5°C | 61 mm | 74% | 2.3 m/s | 2.9 |
| 1985 | 18.7°C | 16.4°C | 14.1°C | 22.7°C | 9.3°C | 210 mm | 82% | 2.4 m/s | 2.9 |
| 1984 ❄️ | 18.8°C | 15.8°C | 12.8°C | 23.4°C | 9.7°C | 59 mm | 77% | 1.9 m/s | 3.1 |
| 1983 | 19.5°C | 16.8°C | 14.1°C | 22.3°C | 10.3°C | 104 mm | 79% | 2 m/s | — |
| 1982 | 21.2°C | 17.2°C | 13.3°C | 24.9°C | 8.6°C | 22 mm | 67% | 2 m/s | — |
| 1981 | 19.3°C | 16.5°C | 13.8°C | 21.8°C | 10.1°C | 132 mm | 74% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 19.9°C with lows near 14.2°C (mean 17°C), based on 45 years of NASA POWER data.
May averages 99 mm of rainfall in Forster, about average for rainfall. The wettest on record was 283 mm in 1996.
The hottest May reached 27°C in 2007. The coldest dipped to 7.2°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.7°C. Daytime highs moved from 19.5°C to 19.8°C and overnight lows from 13.6°C to 14.5°C over the same span.
May is one of the cooler months of the year in Forster and about average for rainfall, so plan for around 19.9°C daytime highs and 14.2°C at night.
Not quite — May is the 5th coolest month in Forster, averaging 17°C.
For May in Forster, pack light layers you can adjust through the day, with typical highs of 19.9°C and lows of 14.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 75% — quite humid.
Average wind speed in May is 2.3 m/s. The windiest May on record averaged 2.6 m/s (1996).
The wettest May on record was 1996 with 283 mm. On average, May sees 99 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 Forster 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.
