June is one of the warmer months of the year in Sidney, with average highs near 17.5°C and lows around 11.2°C (mean 14.4°C). It is one of the drier months, averaging 42 mm of rainfall and 78% relative humidity across the period.
June is one of the warmer months of the year in Sidney. Across 45 years of records, the warmest June in Sidney was 2015 — when the month averaged 16.7°C — while the coldest was 2012 at 12.5°C. Typical June days reach 17.5°C with nights near 11.2°C. The long-term June temperature trend is broadly flat.
June is one of the drier months in Sidney, averaging 42 mm of rainfall. The wettest June on record was 1981 with 89 mm, while the driest was 2009 at 12 mm.
Relative humidity in Sidney during June averages 78%. The most humid June was 2025 at 84%, and the least humid was 1995 at 74%.
June receives about 6 kWh/m²/day of solar energy in Sidney. The sunniest June was 2015 at 7.3 kWh/m²/day, and the cloudiest was 2012 at 4.8.
Average wind speed in Sidney during June is 2 m/s. The windiest June was 1993 at 2.4 m/s, while the calmest was 2025 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.3°C | 14.4°C | 14.5°C | 14.2°C | 14.3°C | 0°C |
| Avg High | 17.6°C | 17.4°C | 17.7°C | 17.3°C | 17.4°C | -0.2°C |
| Avg Low | 11.0°C | 11.5°C | 11.3°C | 11.2°C | 11.1°C | +0.1°C |
| Avg Rain | 44 mm | 50 mm | 37 mm | 36 mm | 46 mm | +2 mm |
June temperatures in Sidney have risen by about 0.4°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 6.8°C (2008) to a record high of 35.2°C (2021).
Rainfall in June is one of the drier months, averaging 42 mm, with a wettest year of 89 mm.
One of the best times to visit Sidney
June is one of the best times to visit Sidney. Expect days averaging 17.5°C and nights around 11.2°C (mean 14.4°C) — warmer than Sidney's yearly average — with moderate rainfall (42 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 16.4°C | 13.4°C | 10.4°C | 24.2°C | 7.9°C | 34 mm | 84% | 1.5 m/s | 6.4 |
| 2024 | 16.2°C | 13.2°C | 10.1°C | 21.4°C | 7.5°C | 53 mm | 82% | 1.9 m/s | 6.1 |
| 2023 | 17.8°C | 14.4°C | 11.0°C | 23.8°C | 8.6°C | 31 mm | 79% | 2.3 m/s | 6.7 |
| 2022 | 17.2°C | 14.3°C | 11.3°C | 28.3°C | 9.0°C | 64 mm | 82% | 1.9 m/s | 5.6 |
| 2021 | 19.9°C | 16.4°C | 12.9°C | 35.2°C | 9.0°C | 32 mm | 74% | 1.8 m/s | 7 |
| 2020 | 16.8°C | 13.9°C | 11.0°C | 21.5°C | 8.4°C | 63 mm | 81% | 2 m/s | 5.7 |
| 2019 | 17.9°C | 14.7°C | 11.4°C | 23.3°C | 8.8°C | 30 mm | 77% | 2.3 m/s | 6.6 |
| 2018 | 17.1°C | 14.2°C | 11.2°C | 24.0°C | 8.6°C | 34 mm | 79% | 1.9 m/s | 5.7 |
| 2017 | 17.7°C | 14.5°C | 11.4°C | 25.5°C | 8.9°C | 39 mm | 79% | 1.9 m/s | 6.2 |
| 2016 | 17.8°C | 14.8°C | 11.7°C | 24.7°C | 9.6°C | 40 mm | 79% | 2 m/s | 6.1 |
| 2015 🔥 | 20.5°C | 16.7°C | 12.8°C | 26.8°C | 10.3°C | 14 mm | 74% | 2.2 m/s | 7.3 |
| 2014 | 17.5°C | 14.4°C | 11.3°C | 21.1°C | 9.2°C | 28 mm | 80% | 2 m/s | 6.2 |
| 2013 | 17.8°C | 14.6°C | 11.4°C | 25.6°C | 9.1°C | 38 mm | 81% | 1.7 m/s | 5.9 |
| 2012 ❄️ | 15.1°C | 12.5°C | 9.9°C | 19.9°C | 7.7°C | 70 mm | 82% | 1.9 m/s | 4.8 |
| 2011 | 15.8°C | 13.0°C | 10.3°C | 19.6°C | 8.5°C | 23 mm | 81% | 1.9 m/s | 5.5 |
| 2010 | 15.7°C | 12.9°C | 10.2°C | 20.4°C | 8.1°C | 46 mm | 81% | 2 m/s | 5.6 |
| 2009 | 18.8°C | 15.1°C | 11.5°C | 26.1°C | 9.4°C | 12 mm | 74% | 2 m/s | 6.6 |
| 2008 | 15.9°C | 12.8°C | 9.6°C | 26.3°C | 6.8°C | 46 mm | 79% | 2.1 m/s | 5.6 |
| 2007 | 16.4°C | 13.5°C | 10.7°C | 23.6°C | 9.0°C | 45 mm | 79% | 1.8 m/s | 5.4 |
| 2006 | 18.5°C | 15.1°C | 11.8°C | 27.2°C | 9.8°C | 27 mm | 78% | 1.8 m/s | 6.2 |
| 2005 | 16.7°C | 14.0°C | 11.4°C | 22.2°C | 9.4°C | 57 mm | 81% | 1.9 m/s | 5.2 |
| 2004 | 19.8°C | 16.2°C | 12.5°C | 27.8°C | 9.6°C | 25 mm | 74% | 1.7 m/s | 6.6 |
| 2003 | 18.9°C | 15.5°C | 12.0°C | 25.2°C | 8.9°C | 13 mm | 75% | 2 m/s | 6.5 |
| 2002 | 18.4°C | 15.0°C | 11.7°C | 28.7°C | 7.6°C | 30 mm | 77% | 2 m/s | 6.5 |
| 2001 | 15.9°C | 13.1°C | 10.3°C | 21.6°C | 7.8°C | 60 mm | 79% | 2 m/s | 5.9 |
| 2000 | 17.5°C | 14.5°C | 11.5°C | 24.9°C | 9.0°C | 52 mm | 78% | 2.1 m/s | 6.2 |
| 1999 | 15.6°C | 13.0°C | 10.4°C | 24.4°C | 7.5°C | 63 mm | 81% | 1.9 m/s | 5.9 |
| 1998 | 18.1°C | 15.0°C | 11.9°C | 21.9°C | 10.0°C | 36 mm | 80% | 2 m/s | 6.1 |
| 1997 | 17.4°C | 14.7°C | 12.0°C | 21.0°C | 10.3°C | 72 mm | 80% | 2 m/s | 5.9 |
| 1996 | 16.7°C | 13.7°C | 10.6°C | 20.5°C | 8.2°C | 18 mm | 78% | 2 m/s | 6.3 |
| 1995 | 19.0°C | 15.6°C | 12.2°C | 28.2°C | 9.9°C | 34 mm | 74% | 2.1 m/s | 6.2 |
| 1994 | 16.9°C | 14.1°C | 11.2°C | 21.1°C | 9.8°C | 48 mm | 76% | 1.8 m/s | 5.8 |
| 1993 | 17.3°C | 14.6°C | 11.9°C | 21.9°C | 9.7°C | 63 mm | 79% | 2.4 m/s | 5.5 |
| 1992 | 19.4°C | 16.0°C | 12.6°C | 26.6°C | 9.4°C | 55 mm | 77% | 2 m/s | 6.4 |
| 1991 | 16.0°C | 13.2°C | 10.4°C | 21.4°C | 7.6°C | 38 mm | 80% | 2.1 m/s | 5.5 |
| 1990 | 17.5°C | 14.5°C | 11.5°C | 24.1°C | 9.4°C | 71 mm | 79% | 2.1 m/s | 5.4 |
| 1989 | 19.3°C | 15.7°C | 12.1°C | 26.7°C | 9.3°C | 30 mm | 75% | 1.9 m/s | 6.2 |
| 1988 | 16.8°C | 13.5°C | 10.2°C | 25.0°C | 7.7°C | 35 mm | 76% | 1.9 m/s | 5.7 |
| 1987 | 18.7°C | 14.8°C | 10.9°C | 26.6°C | 8.0°C | 15 mm | 75% | 1.9 m/s | 6.7 |
| 1986 | 18.4°C | 15.0°C | 11.6°C | 26.1°C | 9.4°C | 33 mm | 75% | 1.6 m/s | 5.9 |
| 1985 | 17.0°C | 13.7°C | 10.5°C | 23.6°C | 8.4°C | 42 mm | 75% | 2.2 m/s | 6.1 |
| 1984 | 16.2°C | 13.0°C | 9.8°C | 22.2°C | 7.0°C | 58 mm | 80% | 2.2 m/s | 5.4 |
| 1983 | 16.8°C | 14.0°C | 11.2°C | 22.1°C | 9.6°C | 60 mm | 79% | 2 m/s | — |
| 1982 | 19.8°C | 15.8°C | 11.9°C | 30.1°C | 8.7°C | 33 mm | 74% | 1.8 m/s | — |
| 1981 🌧️ | 15.7°C | 13.1°C | 10.5°C | 19.3°C | 9.4°C | 89 mm | 81% | 1.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 17.5°C with lows near 11.2°C (mean 14.4°C), based on 45 years of NASA POWER data.
June averages 42 mm of rainfall in Sidney, one of the drier months. The wettest on record was 89 mm in 1981.
The hottest June reached 35.2°C in 2021. The coldest dipped to 6.8°C in 2008.
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 17.1°C to 17.5°C and overnight lows from 10.8°C to 11.1°C over the same span.
June is one of the warmer months of the year in Sidney and one of the drier months, so plan for around 17.5°C daytime highs and 11.2°C at night.
Not quite — June is the 9th coolest month in Sidney, averaging 14.4°C.
For June in Sidney, pack light layers you can adjust through the day, with typical highs of 17.5°C and lows of 11.2°C.
Relative humidity in June averages 78% — quite humid.
Average wind speed in June is 2 m/s. The windiest June on record averaged 2.4 m/s (1993).
The wettest June on record was 1981 with 89 mm. On average, June sees 42 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 Sidney 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.
