July is one of the cooler months of the year in Cairns, with average highs near 22.5°C and lows around 15.6°C (mean 19.1°C). It is one of the drier months, averaging 57 mm of rainfall and 82% relative humidity across the period.
July is one of the cooler months of the year in Cairns. Across 45 years of records, the warmest July in Cairns was 2025 — when the month averaged 21.8°C — while the coldest was 2007 at 16.8°C. Typical July days reach 22.5°C with nights near 15.6°C. The long-term trend is warming, about 0.5°C per decade.
July is one of the drier months in Cairns, averaging 57 mm of rainfall. The wettest July on record was 2005 with 159 mm, while the driest was 2025 at 13 mm.
Relative humidity in Cairns during July averages 82%. The most humid July was 1990 at 88%, and the least humid was 2020 at 76%.
July receives about 4.2 kWh/m²/day of solar energy in Cairns. The sunniest July was 2001 at 4.7 kWh/m²/day, and the cloudiest was 1984 at 3.1.
Average wind speed in Cairns during July is 1.7 m/s. The windiest Julys were 2003 and 2013 at 2.1 m/s, while the calmest was 2021 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.4°C | 18.7°C | 18.6°C | 19.6°C | 20.4°C | +2°C |
| Avg High | 21.7°C | 22.0°C | 22.1°C | 23.0°C | 24.1°C | +2.4°C |
| Avg Low | 15.1°C | 15.3°C | 15.1°C | 16.2°C | 16.6°C | +1.5°C |
| Avg Rain | 56 mm | 73 mm | 58 mm | 47 mm | 44 mm | -11 mm |
July temperatures in Cairns have risen by about 2.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.5°C (1983) to a record high of 29.8°C (2025).
Rainfall in July is one of the drier months, averaging 57 mm, with a wettest year of 159 mm.
A good time to visit Cairns
July is a good time to visit Cairns, with days averaging 22.5°C and nights around 15.6°C (mean 19.1°C, cooler than Cairns's yearly average) and moderate rainfall. September and August are marginally more temperate, but July still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🔥 | 26.0°C | 21.8°C | 17.7°C | 29.8°C | 11.9°C | 13 mm | 79% | 1.5 m/s | 4.2 |
| 2024 | 23.7°C | 19.9°C | 16.2°C | 25.3°C | 9.6°C | 32 mm | 78% | 1.8 m/s | 4.3 |
| 2023 | 24.3°C | 21.0°C | 17.6°C | 28.1°C | 11.6°C | 82 mm | 81% | 1.9 m/s | 3.9 |
| 2022 | 22.1°C | 18.5°C | 14.8°C | 25.2°C | 9.5°C | 84 mm | 83% | 1.7 m/s | 4.2 |
| 2021 | 24.7°C | 21.0°C | 17.3°C | 28.4°C | 14.6°C | 32 mm | 82% | 1.4 m/s | 4.3 |
| 2020 | 23.9°C | 19.9°C | 15.9°C | 27.4°C | 11.8°C | 24 mm | 76% | 1.9 m/s | 4.6 |
| 2019 | 23.3°C | 19.4°C | 15.5°C | 25.2°C | 12.1°C | 17 mm | 78% | 1.8 m/s | 4.3 |
| 2018 | 24.4°C | 20.4°C | 16.4°C | 27.2°C | 13.2°C | 34 mm | 79% | 1.6 m/s | 4.4 |
| 2017 | 24.7°C | 21.2°C | 17.7°C | 27.6°C | 16.3°C | 35 mm | 78% | 1.9 m/s | 4.1 |
| 2016 | 24.3°C | 20.8°C | 17.4°C | 26.9°C | 14.1°C | 45 mm | 83% | 1.7 m/s | 4 |
| 2015 | 23.5°C | 19.6°C | 15.7°C | 26.1°C | 9.9°C | 16 mm | 79% | 1.7 m/s | 4.3 |
| 2014 | 21.5°C | 18.0°C | 14.5°C | 23.4°C | 10.7°C | 33 mm | 82% | 1.7 m/s | 4.5 |
| 2013 | 22.0°C | 19.2°C | 16.4°C | 24.3°C | 11.1°C | 105 mm | 85% | 2.1 m/s | 4 |
| 2012 | 21.6°C | 18.5°C | 15.4°C | 25.1°C | 10.7°C | 77 mm | 85% | 1.7 m/s | 4 |
| 2011 | 21.6°C | 18.2°C | 14.7°C | 23.2°C | 9.9°C | 26 mm | 82% | 1.8 m/s | 4.3 |
| 2010 | 23.4°C | 21.0°C | 18.5°C | 24.8°C | 17.0°C | 83 mm | 87% | 2 m/s | 3.3 |
| 2009 | 23.4°C | 19.4°C | 15.3°C | 26.1°C | 11.2°C | 19 mm | 77% | 1.6 m/s | 4.5 |
| 2008 | 22.6°C | 18.7°C | 14.9°C | 24.5°C | 9.5°C | 74 mm | 81% | 1.6 m/s | 4.1 |
| 2007 ❄️ | 20.5°C | 16.8°C | 13.1°C | 22.7°C | 8.1°C | 39 mm | 82% | 1.8 m/s | 4.6 |
| 2006 | 21.3°C | 18.4°C | 15.4°C | 23.9°C | 11.6°C | 104 mm | 88% | 1.7 m/s | 4.1 |
| 2005 🌧️ | 22.2°C | 19.2°C | 16.1°C | 27.0°C | 11.5°C | 159 mm | 85% | 2 m/s | 4 |
| 2004 | 22.1°C | 18.8°C | 15.5°C | 24.0°C | 10.3°C | 63 mm | 84% | 1.7 m/s | 4.3 |
| 2003 | 22.2°C | 19.3°C | 16.4°C | 26.5°C | 12.8°C | 69 mm | 83% | 2.1 m/s | 4 |
| 2002 | 23.0°C | 19.1°C | 15.2°C | 25.3°C | 11.6°C | 24 mm | 77% | 1.8 m/s | 4.2 |
| 2001 | 22.7°C | 18.9°C | 15.0°C | 25.0°C | 10.7°C | 13 mm | 78% | 1.6 m/s | 4.7 |
| 2000 | 21.1°C | 17.6°C | 14.0°C | 24.2°C | 10.4°C | 17 mm | 81% | 1.6 m/s | 4.5 |
| 1999 | 21.5°C | 18.1°C | 14.8°C | 24.1°C | 12.3°C | 72 mm | 83% | 1.7 m/s | 4.3 |
| 1998 | 23.3°C | 20.2°C | 17.0°C | 26.0°C | 11.5°C | 66 mm | 84% | 1.8 m/s | 4.1 |
| 1997 | 21.4°C | 18.5°C | 15.6°C | 23.4°C | 13.1°C | 65 mm | 85% | 1.9 m/s | 4.1 |
| 1996 | 22.2°C | 18.2°C | 14.3°C | 27.3°C | 10.7°C | 75 mm | 79% | 1.5 m/s | 4.5 |
| 1995 | 22.9°C | 19.1°C | 15.2°C | 28.3°C | 11.8°C | 26 mm | 81% | 1.6 m/s | 4.5 |
| 1994 | 20.4°C | 17.5°C | 14.7°C | 22.9°C | 12.0°C | 149 mm | 86% | 1.9 m/s | 4 |
| 1993 | 22.3°C | 19.4°C | 16.4°C | 24.0°C | 14.0°C | 113 mm | 88% | 1.7 m/s | 4 |
| 1992 | 21.6°C | 18.4°C | 15.1°C | 24.3°C | 10.8°C | 73 mm | 83% | 1.9 m/s | 4 |
| 1991 | 22.8°C | 18.6°C | 14.4°C | 28.9°C | 11.5°C | 50 mm | 77% | 1.6 m/s | 4.4 |
| 1990 | 21.4°C | 18.5°C | 15.6°C | 23.7°C | 9.3°C | 41 mm | 88% | 1.6 m/s | 3.9 |
| 1989 | 21.6°C | 18.5°C | 15.4°C | 24.8°C | 10.1°C | 46 mm | 87% | 1.6 m/s | 4.2 |
| 1988 | 22.6°C | 19.6°C | 16.6°C | 25.0°C | 13.0°C | 88 mm | 86% | 1.9 m/s | 3.7 |
| 1987 | 20.6°C | 17.5°C | 14.4°C | 24.7°C | 11.6°C | 87 mm | 86% | 1.7 m/s | 4.3 |
| 1986 | 22.8°C | 19.9°C | 17.0°C | 24.6°C | 13.5°C | 35 mm | 86% | 1.6 m/s | 4.1 |
| 1985 | 20.6°C | 16.9°C | 13.3°C | 22.1°C | 9.3°C | 35 mm | 81% | 1.8 m/s | 4.1 |
| 1984 | 22.0°C | 18.3°C | 14.5°C | 24.4°C | 6.7°C | 56 mm | 81% | 1.6 m/s | 3.1 |
| 1983 | 20.8°C | 17.6°C | 14.4°C | 23.9°C | 6.5°C | 37 mm | 85% | 1.7 m/s | — |
| 1982 | 21.1°C | 17.0°C | 12.9°C | 25.0°C | 9.4°C | 18 mm | 78% | 1.6 m/s | — |
| 1981 | 22.8°C | 19.9°C | 17.1°C | 24.5°C | 13.2°C | 98 mm | 85% | 1.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 22.5°C with lows near 15.6°C (mean 19.1°C), based on 45 years of NASA POWER data.
July averages 57 mm of rainfall in Cairns, one of the drier months. The wettest on record was 159 mm in 2005.
The hottest July reached 29.8°C in 2025. The coldest dipped to 6.5°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.5°C. Daytime highs moved from 21.5°C to 24.2°C and overnight lows from 14.4°C to 16.7°C over the same span.
July is one of the cooler months of the year in Cairns and one of the drier months, so plan for around 22.5°C daytime highs and 15.6°C at night.
Yes — July is the coldest month of the year in Cairns, averaging 19.1°C.
For July in Cairns, pack light layers you can adjust through the day, with typical highs of 22.5°C and lows of 15.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 82% — quite humid.
Average wind speed in July is 1.7 m/s. The windiest July on record averaged 2.1 m/s (2003).
The wettest July on record was 2005 with 159 mm. On average, July sees 57 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 Cairns 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.
