June is one of the cooler months of the year in Whanganui, with average highs near 13.1°C and lows around 8.8°C (mean 11°C). It is a relatively wet time of year, averaging 104 mm of rainfall and 86% relative humidity across the period.
June is one of the cooler months of the year in Whanganui. Across 45 years of records, the warmest June in Whanganui was 2003 — when the month averaged 12.5°C — while the coldest was 2009 at 9.2°C. Typical June days reach 13.1°C with nights near 8.8°C. The long-term trend is warming, about 0.3°C per decade.
June is a relatively wet time of year in Whanganui, averaging 104 mm of rainfall. The wettest June on record was 2015 with 182 mm, while the driest was 1984 at 46 mm.
Relative humidity in Whanganui during June averages 86%. The most humid June was 2021 at 88%, and the least humid was 2007 at 83%.
June receives about 1.6 kWh/m²/day of solar energy in Whanganui. The sunniest Junes were 2017 and 2024 at 1.9 kWh/m²/day, and the cloudiest was 2002 at 1.3.
Average wind speed in Whanganui during June is 4.7 m/s. The windiest June was 1993 at 5.8 m/s, while the calmest was 2017 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.7°C | 10.3°C | 10.9°C | 11.1°C | 11.9°C | +1.2°C |
| Avg High | 13.0°C | 12.4°C | 13.1°C | 13.2°C | 14.0°C | +1°C |
| Avg Low | 8.5°C | 8.3°C | 8.8°C | 8.9°C | 9.8°C | +1.3°C |
| Avg Rain | 88 mm | 117 mm | 96 mm | 104 mm | 119 mm | +31 mm |
June temperatures in Whanganui have risen by about 1.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 3.2°C (2009) to a record high of 18.7°C (2001).
Rainfall in June is a relatively wet time of year, averaging 104 mm, with a wettest year of 182 mm.
A quieter season to visit Whanganui
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Whanganui. That said, June — with days averaging 13.1°C and nights around 8.8°C (mean 11°C) and higher rainfall (104 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 | 13.9°C | 11.7°C | 9.6°C | 18.4°C | 6.1°C | 134 mm | 86% | 4.8 m/s | 1.7 |
| 2024 | 13.8°C | 11.4°C | 9.1°C | 16.2°C | 6.4°C | 102 mm | 88% | 4.1 m/s | 1.9 |
| 2023 | 14.1°C | 12.0°C | 9.8°C | 16.4°C | 6.1°C | 49 mm | 87% | 4.4 m/s | 1.8 |
| 2022 | 14.0°C | 12.0°C | 10.1°C | 17.5°C | 5.1°C | 168 mm | 86% | 5.4 m/s | 1.6 |
| 2021 | 14.3°C | 12.2°C | 10.2°C | 16.5°C | 7.0°C | 123 mm | 88% | 4.6 m/s | 1.5 |
| 2020 | 13.8°C | 11.8°C | 9.7°C | 16.3°C | 5.8°C | 140 mm | 88% | 4.7 m/s | 1.6 |
| 2019 | 13.0°C | 10.8°C | 8.7°C | 16.3°C | 5.6°C | 88 mm | 84% | 4.3 m/s | 1.8 |
| 2018 | 12.6°C | 10.6°C | 8.5°C | 15.9°C | 4.9°C | 107 mm | 88% | 4.5 m/s | 1.6 |
| 2017 | 12.9°C | 10.6°C | 8.3°C | 15.1°C | 6.1°C | 48 mm | 86% | 3.5 m/s | 1.9 |
| 2016 | 14.3°C | 12.1°C | 9.8°C | 17.5°C | 5.8°C | 100 mm | 85% | 4.7 m/s | 1.6 |
| 2015 🌧️ | 13.0°C | 11.0°C | 9.0°C | 17.4°C | 4.1°C | 182 mm | 85% | 5.7 m/s | 1.5 |
| 2014 | 14.4°C | 12.1°C | 9.8°C | 16.8°C | 5.1°C | 83 mm | 86% | 5 m/s | 1.7 |
| 2013 | 12.9°C | 10.9°C | 8.9°C | 15.8°C | 4.9°C | 123 mm | 87% | 4.5 m/s | 1.6 |
| 2012 | 12.5°C | 10.4°C | 8.3°C | 16.8°C | 4.8°C | 78 mm | 83% | 5.2 m/s | 1.7 |
| 2011 | 13.7°C | 11.6°C | 9.5°C | 17.6°C | 6.0°C | 77 mm | 87% | 4.2 m/s | 1.5 |
| 2010 | 12.8°C | 10.7°C | 8.5°C | 17.0°C | 6.5°C | 155 mm | 86% | 4.8 m/s | 1.5 |
| 2009 ❄️ | 11.6°C | 9.2°C | 6.9°C | 16.1°C | 3.2°C | 76 mm | 84% | 4.2 m/s | 1.6 |
| 2008 | 13.2°C | 10.9°C | 8.6°C | 17.6°C | 5.7°C | 127 mm | 85% | 5.1 m/s | 1.7 |
| 2007 | 12.6°C | 10.7°C | 8.8°C | 16.7°C | 4.3°C | 100 mm | 83% | 5.5 m/s | 1.6 |
| 2006 | 11.8°C | 9.5°C | 7.2°C | 16.8°C | 4.5°C | 107 mm | 85% | 4.8 m/s | 1.7 |
| 2005 | 12.6°C | 10.6°C | 8.6°C | 15.2°C | 5.7°C | 79 mm | 84% | 4.8 m/s | 1.6 |
| 2004 | 13.4°C | 11.5°C | 9.6°C | 15.6°C | 6.2°C | 119 mm | 85% | 5.1 m/s | 1.6 |
| 2003 🔥 | 14.5°C | 12.5°C | 10.5°C | 18.1°C | 4.7°C | 121 mm | 84% | 5.5 m/s | 1.6 |
| 2002 | 14.0°C | 12.2°C | 10.3°C | 16.1°C | 5.5°C | 100 mm | 86% | 5.7 m/s | 1.3 |
| 2001 | 13.4°C | 10.8°C | 8.3°C | 18.7°C | 4.4°C | 62 mm | 85% | 4.3 m/s | 1.8 |
| 2000 | 13.5°C | 11.4°C | 9.3°C | 16.1°C | 5.9°C | 71 mm | 84% | 4.9 m/s | 1.6 |
| 1999 | 13.8°C | 11.4°C | 9.0°C | 17.1°C | 5.8°C | 64 mm | 85% | 4.2 m/s | 1.7 |
| 1998 | 13.7°C | 11.3°C | 8.8°C | 18.3°C | 6.4°C | 106 mm | 85% | 4.3 m/s | 1.5 |
| 1997 | 12.4°C | 10.2°C | 7.9°C | 14.9°C | 5.2°C | 62 mm | 86% | 4.2 m/s | 1.6 |
| 1996 | 11.8°C | 9.7°C | 7.6°C | 13.8°C | 4.3°C | 154 mm | 85% | 4.5 m/s | 1.6 |
| 1995 | 12.1°C | 10.2°C | 8.3°C | 15.3°C | 5.3°C | 150 mm | 87% | 4.7 m/s | 1.6 |
| 1994 | 11.7°C | 9.8°C | 8.0°C | 15.5°C | 4.0°C | 154 mm | 86% | 4.5 m/s | 1.6 |
| 1993 | 13.0°C | 11.2°C | 9.4°C | 15.2°C | 4.9°C | 118 mm | 87% | 5.8 m/s | 1.5 |
| 1992 | 11.3°C | 9.4°C | 7.4°C | 16.3°C | 3.8°C | 92 mm | 86% | 4.4 m/s | 1.7 |
| 1991 | 11.7°C | 9.6°C | 7.5°C | 14.9°C | 4.4°C | 110 mm | 85% | 4.8 m/s | 1.6 |
| 1990 | 12.6°C | 10.6°C | 8.6°C | 16.2°C | 5.6°C | 159 mm | 88% | 4.4 m/s | 1.6 |
| 1989 | 12.7°C | 10.5°C | 8.3°C | 17.0°C | 5.3°C | 101 mm | 86% | 4.5 m/s | 1.7 |
| 1988 | 13.2°C | 10.8°C | 8.5°C | 17.1°C | 3.9°C | 104 mm | 86% | 4.9 m/s | 1.6 |
| 1987 | 12.7°C | 10.4°C | 8.2°C | 15.4°C | 4.6°C | 76 mm | 85% | 3.9 m/s | 1.6 |
| 1986 | 12.8°C | 10.5°C | 8.2°C | 16.9°C | 3.9°C | 87 mm | 84% | 4.6 m/s | 1.7 |
| 1985 | 14.2°C | 11.9°C | 9.6°C | 16.8°C | 5.9°C | 109 mm | 87% | 4.2 m/s | 1.7 |
| 1984 | 13.5°C | 11.4°C | 9.3°C | 15.8°C | 3.9°C | 46 mm | 87% | 4.6 m/s | 1.7 |
| 1983 | 12.5°C | 10.2°C | 7.9°C | 15.7°C | 5.0°C | 70 mm | 86% | 4.4 m/s | — |
| 1982 | 11.7°C | 9.3°C | 6.9°C | 15.7°C | 4.4°C | 74 mm | 86% | 3.8 m/s | — |
| 1981 | 13.4°C | 11.4°C | 9.5°C | 17.7°C | 4.1°C | 127 mm | 87% | 5 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 13.1°C with lows near 8.8°C (mean 11°C), based on 45 years of NASA POWER data.
June averages 104 mm of rainfall in Whanganui, a relatively wet time of year. The wettest on record was 182 mm in 2015.
The hottest June reached 18.7°C in 2001. The coldest dipped to 3.2°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.1°C. Daytime highs moved from 13.1°C to 14°C and overnight lows from 8.6°C to 9.8°C over the same span.
June is one of the cooler months of the year in Whanganui and a relatively wet time of year, so plan for around 13.1°C daytime highs and 8.8°C at night.
Not quite — June is the 3rd coolest month in Whanganui, averaging 11°C.
For June in Whanganui, pack light layers you can adjust through the day, with typical highs of 13.1°C and lows of 8.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 86% — quite humid.
Average wind speed in June is 4.7 m/s. The windiest June on record averaged 5.8 m/s (1993).
The wettest June on record was 2015 with 182 mm. On average, June sees 104 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 Whanganui behaves each June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
