June is one of the cooler months of the year in Byron Bay, with average highs near 19.8°C and lows around 17.1°C (mean 18.5°C). It is one of the drier months, averaging 92 mm of rainfall and 72% relative humidity across the period.
June is one of the cooler months of the year in Byron Bay. Across 45 years of records, the warmest June in Byron Bay was 2001 — when the month averaged 19.5°C — while the coldest was 1985 at 16.9°C. Typical June days reach 19.8°C with nights near 17.1°C. The long-term trend is warming, about 0.2°C per decade.
June is one of the drier months in Byron Bay, averaging 92 mm of rainfall. The wettest June on record was 1999 with 294 mm, while the driest was 2023 at 8 mm.
Relative humidity in Byron Bay during June averages 72%. The most humid June was 1989 at 76%, and the least humid was 2023 at 66%.
June receives about 3 kWh/m²/day of solar energy in Byron Bay. The sunniest Junes were 2004, 2022 and 2023, among others at 3.3 kWh/m²/day, and the cloudiest was 2005 at 2.5.
Average wind speed in Byron Bay during June is 5.3 m/s. The windiest June was 2017 at 6.4 m/s, while the calmest was 2023 at 3.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.8°C | 18.3°C | 18.7°C | 18.8°C | 18.6°C | +0.8°C |
| Avg High | 19.2°C | 19.6°C | 20.1°C | 20.1°C | 20.0°C | +0.8°C |
| Avg Low | 16.5°C | 17.0°C | 17.4°C | 17.5°C | 17.1°C | +0.6°C |
| Avg Rain | 103 mm | 87 mm | 105 mm | 113 mm | 28 mm | -75 mm |
June temperatures in Byron Bay have risen by about 0.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 10.5°C (1990) to a record high of 24.5°C (2016).
Rainfall in June is one of the drier months, averaging 92 mm, with a wettest year of 294 mm.
A good time to visit Byron Bay
June is a good time to visit Byron Bay, with days averaging 19.8°C and nights around 17.1°C (mean 18.5°C, cooler than Byron Bay's yearly average) and higher rainfall. November and October are marginally more temperate, but June still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 20.0°C | 18.7°C | 17.3°C | 22.6°C | 13.3°C | 48 mm | 73% | 5.4 m/s | 2.9 |
| 2024 | 20.4°C | 18.8°C | 17.3°C | 23.5°C | 13.9°C | 20 mm | 69% | 4.6 m/s | 3.2 |
| 2023 | 20.3°C | 18.8°C | 17.3°C | 23.3°C | 13.0°C | 8 mm | 66% | 3.9 m/s | 3.3 |
| 2022 | 19.5°C | 17.9°C | 16.3°C | 21.7°C | 12.5°C | 15 mm | 69% | 4.5 m/s | 3.3 |
| 2021 | 19.9°C | 18.3°C | 16.8°C | 21.9°C | 12.7°C | 18 mm | 72% | 5.1 m/s | 3 |
| 2020 | 20.0°C | 18.8°C | 17.7°C | 22.9°C | 13.5°C | 57 mm | 73% | 5.2 m/s | 2.9 |
| 2019 | 20.7°C | 19.4°C | 18.1°C | 22.8°C | 13.2°C | 99 mm | 73% | 5.1 m/s | 2.8 |
| 2018 | 20.4°C | 19.0°C | 17.5°C | 22.8°C | 13.0°C | 37 mm | 70% | 5.5 m/s | 3.1 |
| 2017 | 20.3°C | 19.3°C | 18.2°C | 21.9°C | 15.0°C | 171 mm | 76% | 6.4 m/s | 2.8 |
| 2016 | 20.5°C | 18.9°C | 17.3°C | 24.5°C | 11.6°C | 190 mm | 70% | 5.8 m/s | 2.8 |
| 2015 | 20.0°C | 18.8°C | 17.6°C | 22.0°C | 14.1°C | 47 mm | 72% | 4.9 m/s | 2.7 |
| 2014 | 20.8°C | 19.3°C | 17.9°C | 22.7°C | 13.8°C | 45 mm | 71% | 5 m/s | 3.1 |
| 2013 | 19.7°C | 18.5°C | 17.3°C | 22.0°C | 13.6°C | 164 mm | 74% | 5.4 m/s | 2.7 |
| 2012 | 19.3°C | 18.1°C | 17.0°C | 21.3°C | 13.2°C | 222 mm | 75% | 6.2 m/s | 2.7 |
| 2011 | 19.4°C | 18.0°C | 16.6°C | 21.4°C | 13.3°C | 90 mm | 69% | 5.1 m/s | 2.9 |
| 2010 | 19.5°C | 18.3°C | 17.0°C | 21.7°C | 14.1°C | 68 mm | 72% | 5 m/s | 2.9 |
| 2009 | 19.3°C | 17.9°C | 16.6°C | 21.4°C | 11.7°C | 150 mm | 74% | 5 m/s | 2.9 |
| 2008 | 20.6°C | 19.4°C | 18.2°C | 23.1°C | 14.2°C | 91 mm | 73% | 5.3 m/s | 3.1 |
| 2007 | 19.7°C | 17.9°C | 16.2°C | 22.2°C | 10.6°C | 87 mm | 73% | 5.7 m/s | 2.9 |
| 2006 | 19.9°C | 18.7°C | 17.5°C | 22.2°C | 14.4°C | 136 mm | 70% | 5.4 m/s | 2.9 |
| 2005 | 20.3°C | 19.2°C | 18.0°C | 22.7°C | 12.6°C | 282 mm | 74% | 5.4 m/s | 2.5 |
| 2004 | 20.5°C | 18.9°C | 17.4°C | 24.0°C | 12.6°C | 16 mm | 67% | 4.9 m/s | 3.3 |
| 2003 | 20.4°C | 19.0°C | 17.6°C | 23.9°C | 14.4°C | 89 mm | 72% | 5 m/s | 2.9 |
| 2002 | 20.7°C | 19.1°C | 17.5°C | 24.1°C | 12.6°C | 93 mm | 68% | 6 m/s | 2.9 |
| 2001 🔥 | 20.6°C | 19.5°C | 18.4°C | 23.8°C | 14.2°C | 26 mm | 72% | 4.5 m/s | 3 |
| 2000 | 19.2°C | 17.7°C | 16.2°C | 22.6°C | 11.8°C | 82 mm | 72% | 5.6 m/s | 3 |
| 1999 🌧️ | 19.4°C | 18.3°C | 17.1°C | 21.5°C | 12.5°C | 294 mm | 73% | 6.2 m/s | 2.9 |
| 1998 | 20.6°C | 18.9°C | 17.3°C | 23.5°C | 12.0°C | 34 mm | 74% | 5.2 m/s | 2.8 |
| 1997 | 19.8°C | 18.7°C | 17.5°C | 21.8°C | 12.8°C | 60 mm | 73% | 5.4 m/s | 2.9 |
| 1996 | 20.0°C | 18.8°C | 17.7°C | 22.1°C | 13.8°C | 85 mm | 74% | 5.1 m/s | 2.8 |
| 1995 | 19.3°C | 17.9°C | 16.5°C | 22.2°C | 11.2°C | 49 mm | 73% | 5.7 m/s | 2.9 |
| 1994 | 19.2°C | 17.9°C | 16.5°C | 21.9°C | 13.7°C | 35 mm | 70% | 4.8 m/s | 3.3 |
| 1993 | 19.6°C | 18.3°C | 17.0°C | 23.3°C | 13.0°C | 34 mm | 71% | 5.2 m/s | 3.1 |
| 1992 | 18.7°C | 17.4°C | 16.1°C | 20.7°C | 12.8°C | 36 mm | 72% | 4.8 m/s | 3.3 |
| 1991 | 20.7°C | 19.3°C | 17.8°C | 23.1°C | 13.6°C | 128 mm | 73% | 4.7 m/s | 3.1 |
| 1990 | 18.6°C | 17.5°C | 16.3°C | 20.6°C | 10.5°C | 112 mm | 73% | 5.9 m/s | 3 |
| 1989 | 19.1°C | 17.7°C | 16.3°C | 22.4°C | 11.3°C | 111 mm | 76% | 5.6 m/s | 2.8 |
| 1988 | 19.8°C | 18.4°C | 17.0°C | 23.5°C | 14.1°C | 137 mm | 71% | 5.6 m/s | 3.1 |
| 1987 | 19.5°C | 18.4°C | 17.3°C | 21.3°C | 12.2°C | 101 mm | 74% | 5.1 m/s | 2.9 |
| 1986 | 19.3°C | 17.9°C | 16.6°C | 23.1°C | 11.9°C | 51 mm | 69% | 4.3 m/s | 3.1 |
| 1985 ❄️ | 18.3°C | 16.9°C | 15.4°C | 22.7°C | 10.8°C | 47 mm | 72% | 4.8 m/s | 3.1 |
| 1984 | 19.7°C | 18.5°C | 17.4°C | 20.8°C | 11.7°C | 134 mm | 73% | 5.5 m/s | 2.9 |
| 1983 | 19.2°C | 18.0°C | 16.9°C | 22.1°C | 13.1°C | 281 mm | 72% | 6 m/s | — |
| 1982 | 18.5°C | 17.1°C | 15.6°C | 20.0°C | 11.5°C | 28 mm | 70% | 5.7 m/s | — |
| 1981 | 19.2°C | 17.4°C | 15.6°C | 22.0°C | 12.3°C | 38 mm | 70% | 5.5 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 19.8°C with lows near 17.1°C (mean 18.5°C), based on 45 years of NASA POWER data.
June averages 92 mm of rainfall in Byron Bay, one of the drier months. The wettest on record was 294 mm in 1999.
The hottest June reached 24.5°C in 2016. The coldest dipped to 10.5°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.9°C. Daytime highs moved from 19°C to 20°C and overnight lows from 16.2°C to 17°C over the same span.
June is one of the cooler months of the year in Byron Bay and one of the drier months, so plan for around 19.8°C daytime highs and 17.1°C at night.
Not quite — June is the 3rd coolest month in Byron Bay, averaging 18.5°C.
For June in Byron Bay, pack light layers you can adjust through the day, with typical highs of 19.8°C and lows of 17.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 72% — moderately humid.
Average wind speed in June is 5.3 m/s. The windiest June on record averaged 6.4 m/s (2017).
The wettest June on record was 1999 with 294 mm. On average, June sees 92 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 Byron Bay 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.
