June is one of the cooler months of the year in Port Denison, with average highs near 20.4°C and lows around 13.1°C (mean 16.8°C). It is a relatively wet time of year, averaging 82 mm of rainfall and 69% relative humidity across the period.
June is one of the cooler months of the year in Port Denison. Across 45 years of records, the warmest June in Port Denison was 2020 — when the month averaged 18.5°C — while the coldest was 1990 at 14.6°C. Typical June days reach 20.4°C with nights near 13.1°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Port Denison, averaging 82 mm of rainfall. The wettest June on record was 1983 with 163 mm, while the driest was 2006 at 15 mm.
Relative humidity in Port Denison during June averages 69%. The most humid June was 1999 at 76%, and the least humid was 2006 at 60%.
June receives about 3 kWh/m²/day of solar energy in Port Denison. The sunniest June was 2006 at 3.5 kWh/m²/day, and the cloudiest were 1987 and 2005 at 2.7.
Average wind speed in Port Denison during June is 3.9 m/s. The windiest June was 1992 at 4.8 m/s, while the calmest was 2001 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.6°C | 16.4°C | 16.9°C | 16.8°C | 17.3°C | +0.7°C |
| Avg High | 20.2°C | 19.8°C | 20.7°C | 20.7°C | 21.0°C | +0.8°C |
| Avg Low | 13.1°C | 13.1°C | 13.1°C | 12.9°C | 13.6°C | +0.5°C |
| Avg Rain | 102 mm | 103 mm | 69 mm | 70 mm | 55 mm | -47 mm |
June temperatures in Port Denison have risen by about 0.4°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 6.2°C (1990) to a record high of 27.4°C (2020).
Rainfall in June is a relatively wet time of year, averaging 82 mm, with a wettest year of 163 mm.
A quieter season to visit Port Denison
If your dates are flexible, the more temperate months of November and April tend to be the most comfortable for visiting Port Denison. That said, June — with days averaging 20.4°C and nights around 13.1°C (mean 16.8°C) and higher rainfall (82 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 | 21.8°C | 18.1°C | 14.4°C | 24.5°C | 9.5°C | 73 mm | 66% | 3.8 m/s | 3.1 |
| 2024 | 21.3°C | 17.9°C | 14.6°C | 25.8°C | 9.9°C | 79 mm | 70% | 3.6 m/s | 2.9 |
| 2023 | 19.0°C | 15.7°C | 12.4°C | 21.4°C | 7.2°C | 47 mm | 68% | 3.7 m/s | 3.1 |
| 2022 | 21.6°C | 17.5°C | 13.5°C | 24.7°C | 9.3°C | 63 mm | 70% | 3.9 m/s | 3.2 |
| 2021 | 19.6°C | 15.8°C | 12.1°C | 21.7°C | 8.0°C | 44 mm | 71% | 3.9 m/s | 3 |
| 2020 🔥 | 22.6°C | 18.5°C | 14.4°C | 27.4°C | 9.3°C | 24 mm | 61% | 3.8 m/s | 3.1 |
| 2019 | 20.2°C | 16.6°C | 13.1°C | 25.3°C | 9.1°C | 134 mm | 64% | 4.2 m/s | 2.9 |
| 2018 | 20.4°C | 16.7°C | 13.1°C | 25.0°C | 9.3°C | 98 mm | 69% | 3.4 m/s | 3.1 |
| 2017 | 22.5°C | 17.8°C | 13.2°C | 25.8°C | 8.9°C | 30 mm | 61% | 3.9 m/s | 3.4 |
| 2016 | 19.1°C | 15.6°C | 12.1°C | 24.1°C | 8.7°C | 84 mm | 74% | 3.6 m/s | 2.9 |
| 2015 | 21.9°C | 17.7°C | 13.6°C | 25.6°C | 8.8°C | 65 mm | 69% | 4 m/s | 3.1 |
| 2014 | 20.5°C | 16.2°C | 11.8°C | 25.1°C | 7.7°C | 38 mm | 67% | 4 m/s | 3 |
| 2013 | 20.6°C | 16.3°C | 12.0°C | 22.3°C | 8.3°C | 23 mm | 69% | 3.3 m/s | 3.2 |
| 2012 | 20.6°C | 17.2°C | 13.9°C | 25.3°C | 8.2°C | 119 mm | 68% | 4.4 m/s | 2.8 |
| 2011 | 20.9°C | 17.2°C | 13.5°C | 23.9°C | 10.3°C | 80 mm | 71% | 4.1 m/s | 2.9 |
| 2010 | 20.3°C | 16.3°C | 12.3°C | 24.5°C | 6.9°C | 29 mm | 66% | 3.7 m/s | 3.1 |
| 2009 | 20.0°C | 16.8°C | 13.5°C | 23.8°C | 9.9°C | 102 mm | 70% | 4.2 m/s | 3 |
| 2008 | 21.4°C | 17.5°C | 13.5°C | 26.7°C | 10.2°C | 75 mm | 65% | 4.2 m/s | 3.2 |
| 2007 | 21.4°C | 17.2°C | 13.0°C | 25.2°C | 9.7°C | 47 mm | 62% | 4.4 m/s | 3 |
| 2006 | 21.7°C | 16.8°C | 11.8°C | 24.4°C | 8.9°C | 15 mm | 60% | 3.7 m/s | 3.5 |
| 2005 | 19.1°C | 16.2°C | 13.4°C | 24.6°C | 8.8°C | 132 mm | 73% | 4.2 m/s | 2.7 |
| 2004 | 20.6°C | 17.4°C | 14.1°C | 24.4°C | 8.3°C | 68 mm | 74% | 4.1 m/s | 2.8 |
| 2003 | 20.6°C | 16.8°C | 13.0°C | 23.3°C | 8.4°C | 86 mm | 67% | 4.6 m/s | 3 |
| 2002 | 20.9°C | 17.2°C | 13.6°C | 24.5°C | 9.6°C | 82 mm | 69% | 4 m/s | 2.8 |
| 2001 | 20.6°C | 16.3°C | 12.0°C | 23.9°C | 8.0°C | 26 mm | 69% | 3.1 m/s | 3.4 |
| 2000 | 21.0°C | 17.1°C | 13.2°C | 25.2°C | 9.5°C | 58 mm | 64% | 4.2 m/s | 3 |
| 1999 | 19.6°C | 16.2°C | 12.9°C | 22.0°C | 8.0°C | 113 mm | 76% | 3.7 m/s | 3.1 |
| 1998 | 19.7°C | 16.7°C | 13.7°C | 25.9°C | 7.9°C | 156 mm | 72% | 4.3 m/s | 2.8 |
| 1997 | 21.0°C | 17.5°C | 13.9°C | 24.9°C | 9.4°C | 51 mm | 68% | 3.4 m/s | 3 |
| 1996 | 21.3°C | 18.3°C | 15.3°C | 24.2°C | 12.0°C | 124 mm | 68% | 4 m/s | 2.8 |
| 1995 | 18.8°C | 15.5°C | 12.2°C | 24.9°C | 8.0°C | 98 mm | 72% | 4.5 m/s | 3 |
| 1994 | 20.0°C | 16.3°C | 12.7°C | 24.1°C | 9.1°C | 107 mm | 70% | 3.6 m/s | 2.9 |
| 1993 | 18.8°C | 15.1°C | 11.5°C | 21.2°C | 9.1°C | 68 mm | 72% | 4.5 m/s | 2.9 |
| 1992 | 19.9°C | 16.9°C | 13.9°C | 22.7°C | 10.0°C | 110 mm | 73% | 4.8 m/s | 2.9 |
| 1991 | 19.9°C | 17.1°C | 14.4°C | 23.7°C | 10.7°C | 139 mm | 72% | 3.7 m/s | 2.8 |
| 1990 ❄️ | 18.8°C | 14.6°C | 10.3°C | 24.2°C | 6.2°C | 63 mm | 68% | 3.8 m/s | 3.1 |
| 1989 | 19.4°C | 15.6°C | 11.8°C | 23.7°C | 8.5°C | 68 mm | 72% | 3.8 m/s | 3 |
| 1988 | 20.3°C | 17.4°C | 14.6°C | 24.2°C | 7.9°C | 104 mm | 74% | 4.2 m/s | 2.8 |
| 1987 | 20.5°C | 17.3°C | 14.1°C | 24.7°C | 10.3°C | 102 mm | 70% | 3.5 m/s | 2.7 |
| 1986 | 20.3°C | 16.6°C | 13.0°C | 24.3°C | 10.4°C | 141 mm | 74% | 4.4 m/s | 2.9 |
| 1985 | 21.9°C | 17.8°C | 13.7°C | 25.6°C | 7.9°C | 50 mm | 68% | 3.4 m/s | 3 |
| 1984 | 20.5°C | 16.2°C | 12.0°C | 25.2°C | 7.6°C | 35 mm | 72% | 3.5 m/s | 3 |
| 1983 🌧️ | 21.7°C | 18.3°C | 14.8°C | 24.6°C | 11.5°C | 163 mm | 68% | 4 m/s | — |
| 1982 | 19.4°C | 15.8°C | 12.1°C | 24.9°C | 6.4°C | 142 mm | 68% | 3.9 m/s | — |
| 1981 | 17.9°C | 14.8°C | 11.6°C | 23.3°C | 6.3°C | 113 mm | 73% | 4.2 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 20.4°C with lows near 13.1°C (mean 16.8°C), based on 45 years of NASA POWER data.
June averages 82 mm of rainfall in Port Denison, a relatively wet time of year. The wettest on record was 163 mm in 1983.
The hottest June reached 27.4°C in 2020. The coldest dipped to 6.2°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.4°C. Daytime highs moved from 20.3°C to 20.7°C and overnight lows from 12.8°C to 13.4°C over the same span.
June is one of the cooler months of the year in Port Denison and a relatively wet time of year, so plan for around 20.4°C daytime highs and 13.1°C at night.
Not quite — June is the 3rd coolest month in Port Denison, averaging 16.8°C.
For June in Port Denison, pack light layers you can adjust through the day, with typical highs of 20.4°C and lows of 13.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 69% — moderately humid.
Average wind speed in June is 3.9 m/s. The windiest June on record averaged 4.8 m/s (1992).
The wettest June on record was 1983 with 163 mm. On average, June sees 82 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 Port Denison 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.
