July is one of the cooler months of the year in Dandenong, with average highs near 12.6°C and lows around 6.4°C (mean 9.5°C). It is about average for rainfall, averaging 69 mm of rainfall and 85% relative humidity across the period.
July is one of the cooler months of the year in Dandenong. Across 45 years of records, the warmest July in Dandenong was 2023 — when the month averaged 10.7°C — while the coldest was 1982 at 7.8°C. Typical July days reach 12.6°C with nights near 6.4°C. The long-term trend is warming, about 0.3°C per decade.
July is about average for rainfall in Dandenong, averaging 69 mm of rainfall. The wettest July on record was 1996 with 119 mm, while the driest was 2023 at 28 mm.
Relative humidity in Dandenong during July averages 85%. The most humid July was 1986 at 90%, and the least humid was 2002 at 78%.
July receives about 1.9 kWh/m²/day of solar energy in Dandenong. The sunniest July was 1985 at 2.3 kWh/m²/day, and the cloudiest was 1984 at 1.3.
Average wind speed in Dandenong during July is 3.5 m/s. The windiest July was 2018 at 4.5 m/s, while the calmest was 1982 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.7°C | 9.4°C | 9.9°C | 9.8°C | 9.8°C | +1.1°C |
| Avg High | 11.8°C | 12.4°C | 13.0°C | 12.9°C | 12.8°C | +1°C |
| Avg Low | 5.6°C | 6.4°C | 6.7°C | 6.8°C | 6.7°C | +1.1°C |
| Avg Rain | 82 mm | 70 mm | 65 mm | 64 mm | 63 mm | -19 mm |
July temperatures in Dandenong have risen by about 1.4°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 0.4°C (1982) to a record high of 18.6°C (2013).
Rainfall in July is about average for rainfall, averaging 69 mm, with a wettest year of 119 mm.
A quieter season to visit Dandenong
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Dandenong. That said, July — with days averaging 12.6°C and nights around 6.4°C (mean 9.5°C) and moderate rainfall (69 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 | 13.1°C | 10.0°C | 6.8°C | 15.7°C | 4.5°C | 76 mm | 83% | 3.5 m/s | 1.9 |
| 2024 | 12.6°C | 9.6°C | 6.6°C | 15.8°C | 2.3°C | 103 mm | 85% | 3.4 m/s | 1.9 |
| 2023 🔥 | 13.8°C | 10.7°C | 7.5°C | 16.6°C | 4.4°C | 28 mm | 83% | 3.5 m/s | 2 |
| 2022 | 12.6°C | 9.4°C | 6.2°C | 15.8°C | 2.1°C | 49 mm | 85% | 3 m/s | 2.2 |
| 2021 | 12.3°C | 9.4°C | 6.5°C | 15.7°C | 3.9°C | 78 mm | 85% | 4 m/s | 1.8 |
| 2020 | 12.4°C | 9.5°C | 6.7°C | 14.7°C | 2.7°C | 44 mm | 89% | 2.7 m/s | 2.1 |
| 2019 | 13.4°C | 10.2°C | 7.0°C | 16.5°C | 5.5°C | 66 mm | 83% | 3.9 m/s | 1.9 |
| 2018 | 13.4°C | 10.0°C | 6.7°C | 17.3°C | 4.3°C | 53 mm | 79% | 4.5 m/s | 2.1 |
| 2017 | 13.2°C | 9.5°C | 5.7°C | 16.6°C | 1.1°C | 50 mm | 80% | 3.9 m/s | 2.1 |
| 2016 | 12.8°C | 10.1°C | 7.3°C | 16.4°C | 3.6°C | 68 mm | 86% | 4.1 m/s | 1.7 |
| 2015 | 12.1°C | 8.9°C | 5.7°C | 14.7°C | 1.4°C | 65 mm | 82% | 3.8 m/s | 1.8 |
| 2014 | 12.8°C | 10.0°C | 7.3°C | 16.0°C | 3.9°C | 76 mm | 87% | 4 m/s | 1.8 |
| 2013 | 13.4°C | 10.4°C | 7.4°C | 18.6°C | 3.9°C | 74 mm | 86% | 3.6 m/s | 1.9 |
| 2012 | 12.4°C | 9.7°C | 6.9°C | 14.6°C | 1.4°C | 72 mm | 89% | 3 m/s | 1.9 |
| 2011 | 12.5°C | 9.6°C | 6.7°C | 16.1°C | 2.5°C | 64 mm | 86% | 3.9 m/s | 1.9 |
| 2010 | 13.0°C | 9.9°C | 6.9°C | 15.6°C | 3.8°C | 51 mm | 87% | 2.7 m/s | 2 |
| 2009 | 13.4°C | 10.2°C | 7.1°C | 16.4°C | 2.3°C | 69 mm | 81% | 4.1 m/s | 1.9 |
| 2008 | 12.7°C | 9.4°C | 6.2°C | 16.3°C | 3.4°C | 70 mm | 82% | 3.6 m/s | 2 |
| 2007 | 11.8°C | 9.1°C | 6.3°C | 15.5°C | 2.7°C | 106 mm | 87% | 3.6 m/s | 2 |
| 2006 | 13.0°C | 9.8°C | 6.6°C | 15.2°C | 2.5°C | 54 mm | 84% | 3.2 m/s | 1.9 |
| 2005 | 13.8°C | 10.6°C | 7.3°C | 16.7°C | 3.6°C | 50 mm | 84% | 3.4 m/s | 1.8 |
| 2004 | 12.2°C | 9.3°C | 6.3°C | 14.3°C | 3.7°C | 57 mm | 83% | 3.8 m/s | 2 |
| 2003 | 13.4°C | 10.0°C | 6.6°C | 15.9°C | 3.9°C | 100 mm | 82% | 3.8 m/s | 2 |
| 2002 | 13.7°C | 10.1°C | 6.5°C | 16.4°C | 2.6°C | 51 mm | 78% | 4.3 m/s | 2 |
| 2001 | 13.3°C | 10.4°C | 7.5°C | 15.2°C | 4.0°C | 30 mm | 89% | 2.6 m/s | 1.9 |
| 2000 | 12.6°C | 9.6°C | 6.6°C | 15.1°C | 4.0°C | 68 mm | 85% | 3.6 m/s | 1.9 |
| 1999 | 13.6°C | 10.3°C | 7.0°C | 16.7°C | 2.9°C | 34 mm | 84% | 3.3 m/s | 1.9 |
| 1998 | 12.2°C | 9.2°C | 6.3°C | 14.6°C | 3.7°C | 67 mm | 84% | 3.2 m/s | 1.8 |
| 1997 | 12.3°C | 9.2°C | 6.0°C | 16.6°C | 2.4°C | 35 mm | 81% | 3 m/s | 2 |
| 1996 🌧️ | 11.4°C | 8.6°C | 5.8°C | 14.2°C | 2.5°C | 119 mm | 89% | 3.4 m/s | 1.7 |
| 1995 | 10.7°C | 8.3°C | 5.8°C | 13.3°C | 3.0°C | 89 mm | 89% | 3.9 m/s | 1.6 |
| 1994 | 13.5°C | 9.8°C | 6.1°C | 18.3°C | 1.3°C | 33 mm | 80% | 3.6 m/s | 2.1 |
| 1993 | 13.1°C | 10.0°C | 6.8°C | 16.0°C | 4.5°C | 75 mm | 84% | 3.4 m/s | 1.8 |
| 1992 | 12.3°C | 9.5°C | 6.7°C | 14.8°C | 3.3°C | 49 mm | 84% | 3.9 m/s | 2 |
| 1991 | 12.1°C | 9.5°C | 6.9°C | 15.1°C | 4.1°C | 93 mm | 87% | 3.4 m/s | 1.8 |
| 1990 | 12.5°C | 9.6°C | 6.8°C | 15.8°C | 3.7°C | 106 mm | 88% | 4.2 m/s | 1.7 |
| 1989 | 11.4°C | 8.5°C | 5.7°C | 14.5°C | 2.2°C | 87 mm | 88% | 3.3 m/s | 1.8 |
| 1988 | 13.3°C | 10.2°C | 7.1°C | 15.2°C | 4.6°C | 75 mm | 88% | 3.6 m/s | 1.8 |
| 1987 | 12.2°C | 8.9°C | 5.5°C | 15.2°C | 2.8°C | 91 mm | 87% | 3.4 m/s | 1.9 |
| 1986 | 11.3°C | 8.6°C | 6.0°C | 13.9°C | 2.2°C | 112 mm | 90% | 3.8 m/s | 1.7 |
| 1985 | 11.9°C | 8.9°C | 5.9°C | 17.4°C | 1.5°C | 79 mm | 84% | 3.7 m/s | 2.3 |
| 1984 | 11.3°C | 8.4°C | 5.4°C | 14.7°C | 0.4°C | 75 mm | 88% | 3.2 m/s | 1.3 |
| 1983 | 11.3°C | 8.3°C | 5.3°C | 13.6°C | 1.4°C | 76 mm | 89% | 3.1 m/s | — |
| 1982 ❄️ | 11.5°C | 7.8°C | 4.0°C | 14.7°C | 0.4°C | 32 mm | 84% | 2.5 m/s | — |
| 1981 | 11.7°C | 8.8°C | 5.8°C | 14.4°C | 2.9°C | 109 mm | 88% | 4.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 12.6°C with lows near 6.4°C (mean 9.5°C), based on 45 years of NASA POWER data.
July averages 69 mm of rainfall in Dandenong, about average for rainfall. The wettest on record was 119 mm in 1996.
The hottest July reached 18.6°C in 2013. The coldest dipped to 0.4°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.4°C. Daytime highs moved from 11.5°C to 12.9°C and overnight lows from 5.3°C to 6.7°C over the same span.
July is one of the cooler months of the year in Dandenong and about average for rainfall, so plan for around 12.6°C daytime highs and 6.4°C at night.
Yes — July is the coldest month of the year in Dandenong, averaging 9.5°C.
For July in Dandenong, pack warm layers and a jacket for chilly mornings, with typical highs of 12.6°C and lows of 6.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 85% — quite humid.
Average wind speed in July is 3.5 m/s. The windiest July on record averaged 4.5 m/s (2018).
The wettest July on record was 1996 with 119 mm. On average, July sees 69 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 Dandenong behaves each July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
