July is one of the cooler months of the year in Port Douglas, with average highs near 23.8°C and lows around 19.4°C (mean 21.6°C). It is one of the drier months, averaging 44 mm of rainfall and 78% relative humidity across the period.
July is one of the cooler months of the year in Port Douglas. Across 45 years of records, the warmest July in Port Douglas was 2010 — when the month averaged 23.3°C — while the coldest were 1985 and 2007 at 20.1°C. Typical July days reach 23.8°C with nights near 19.4°C. The long-term trend is warming, about 0.3°C per decade.
July is one of the drier months in Port Douglas, averaging 44 mm of rainfall. The wettest July on record was 2005 with 120 mm, while the driest was 2000 at 11 mm.
Relative humidity in Port Douglas during July averages 78%. The most humid July was 1990 at 85%, and the least humid was 1982 at 71%.
July receives about 4.2 kWh/m²/day of solar energy in Port Douglas. The sunniest July was 2001 at 4.7 kWh/m²/day, and the cloudiest was 1984 at 3.1.
Average wind speed in Port Douglas during July is 2.9 m/s. The windiest July was 2003 at 3.5 m/s, while the calmest were 1996, 2021 and 2025 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.1°C | 21.4°C | 21.4°C | 21.9°C | 22.4°C | +1.3°C |
| Avg High | 23.2°C | 23.6°C | 23.6°C | 24.1°C | 24.6°C | +1.4°C |
| Avg Low | 19.0°C | 19.2°C | 19.2°C | 19.8°C | 20.2°C | +1.2°C |
| Avg Rain | 40 mm | 51 mm | 43 mm | 35 mm | 52 mm | +12 mm |
July temperatures in Port Douglas have risen by about 1.7°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 12.9°C (1983) to a record high of 29.4°C (1995).
Rainfall in July is one of the drier months, averaging 44 mm, with a wettest year of 120 mm.
One of the best times to visit Port Douglas
July is one of the best times to visit Port Douglas. Expect days averaging 23.8°C and nights around 19.4°C (mean 21.6°C) — cooler than Port Douglas's yearly average — with moderate rainfall (44 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 | 25.5°C | 23.2°C | 21.0°C | 28.0°C | 17.1°C | 18 mm | 80% | 2.4 m/s | 4.2 |
| 2024 | 24.5°C | 22.2°C | 20.0°C | 26.0°C | 16.2°C | 31 mm | 75% | 3 m/s | 4.3 |
| 2023 | 25.1°C | 23.1°C | 21.1°C | 27.3°C | 17.4°C | 102 mm | 79% | 3.1 m/s | 3.9 |
| 2022 | 23.0°C | 20.9°C | 18.7°C | 25.3°C | 15.5°C | 90 mm | 79% | 3 m/s | 4.2 |
| 2021 | 25.1°C | 22.9°C | 20.7°C | 27.3°C | 19.5°C | 43 mm | 80% | 2.4 m/s | 4.3 |
| 2020 | 24.3°C | 22.0°C | 19.7°C | 26.1°C | 16.8°C | 27 mm | 74% | 3.2 m/s | 4.6 |
| 2019 | 23.7°C | 21.4°C | 19.0°C | 25.0°C | 16.8°C | 20 mm | 77% | 2.9 m/s | 4.3 |
| 2018 | 24.5°C | 22.2°C | 19.9°C | 26.2°C | 18.1°C | 36 mm | 77% | 2.7 m/s | 4.4 |
| 2017 | 25.0°C | 22.9°C | 20.9°C | 26.6°C | 20.1°C | 46 mm | 77% | 3.1 m/s | 4.1 |
| 2016 | 24.9°C | 22.8°C | 20.8°C | 26.5°C | 17.7°C | 53 mm | 81% | 2.9 m/s | 4 |
| 2015 | 23.9°C | 21.6°C | 19.4°C | 25.6°C | 15.7°C | 15 mm | 77% | 2.9 m/s | 4.3 |
| 2014 | 23.4°C | 21.2°C | 18.9°C | 24.7°C | 16.7°C | 20 mm | 75% | 2.9 m/s | 4.5 |
| 2013 | 23.9°C | 22.0°C | 20.0°C | 25.3°C | 16.8°C | 62 mm | 79% | 3.4 m/s | 4 |
| 2012 | 23.0°C | 21.1°C | 19.1°C | 25.4°C | 16.4°C | 38 mm | 81% | 2.9 m/s | 4 |
| 2011 | 23.2°C | 20.9°C | 18.7°C | 24.1°C | 15.7°C | 16 mm | 75% | 3.1 m/s | 4.3 |
| 2010 🔥 | 25.0°C | 23.3°C | 21.6°C | 26.0°C | 20.4°C | 47 mm | 82% | 3.4 m/s | 3.3 |
| 2009 | 24.7°C | 22.3°C | 19.8°C | 26.4°C | 17.5°C | 14 mm | 72% | 2.8 m/s | 4.5 |
| 2008 | 23.6°C | 21.2°C | 18.8°C | 25.5°C | 15.1°C | 48 mm | 77% | 2.8 m/s | 4.1 |
| 2007 | 22.4°C | 20.1°C | 17.7°C | 24.0°C | 14.5°C | 21 mm | 75% | 3 m/s | 4.6 |
| 2006 | 22.7°C | 20.8°C | 18.9°C | 24.4°C | 16.9°C | 92 mm | 84% | 2.9 m/s | 4.1 |
| 2005 🌧️ | 23.9°C | 21.9°C | 19.9°C | 28.1°C | 17.3°C | 120 mm | 79% | 3.3 m/s | 4 |
| 2004 | 23.8°C | 21.5°C | 19.3°C | 25.2°C | 16.1°C | 48 mm | 77% | 2.9 m/s | 4.3 |
| 2003 | 24.1°C | 22.2°C | 20.3°C | 27.3°C | 18.3°C | 50 mm | 76% | 3.5 m/s | 4 |
| 2002 | 24.0°C | 21.8°C | 19.5°C | 25.6°C | 17.7°C | 19 mm | 72% | 3.1 m/s | 4.2 |
| 2001 | 24.3°C | 21.9°C | 19.4°C | 25.6°C | 16.6°C | 11 mm | 73% | 2.8 m/s | 4.7 |
| 2000 | 22.8°C | 20.5°C | 18.3°C | 24.9°C | 16.0°C | 11 mm | 75% | 2.8 m/s | 4.5 |
| 1999 | 23.2°C | 21.0°C | 18.8°C | 25.5°C | 17.2°C | 45 mm | 77% | 2.9 m/s | 4.3 |
| 1998 | 24.9°C | 22.8°C | 20.7°C | 26.9°C | 17.3°C | 41 mm | 79% | 3.1 m/s | 4.1 |
| 1997 | 23.2°C | 21.1°C | 19.1°C | 24.6°C | 17.9°C | 34 mm | 79% | 3.3 m/s | 4.1 |
| 1996 | 23.9°C | 21.5°C | 19.0°C | 27.5°C | 16.3°C | 63 mm | 73% | 2.4 m/s | 4.5 |
| 1995 | 24.3°C | 21.9°C | 19.5°C | 29.4°C | 17.6°C | 14 mm | 75% | 2.7 m/s | 4.5 |
| 1994 | 22.5°C | 20.5°C | 18.5°C | 24.6°C | 16.7°C | 108 mm | 79% | 3.2 m/s | 4 |
| 1993 | 23.9°C | 21.8°C | 19.7°C | 26.0°C | 18.4°C | 75 mm | 83% | 2.8 m/s | 4 |
| 1992 | 23.2°C | 21.2°C | 19.1°C | 24.6°C | 16.6°C | 43 mm | 78% | 3.2 m/s | 4 |
| 1991 | 23.9°C | 21.4°C | 18.9°C | 29.0°C | 17.0°C | 51 mm | 73% | 2.7 m/s | 4.4 |
| 1990 | 22.6°C | 20.8°C | 19.1°C | 24.3°C | 14.8°C | 30 mm | 85% | 2.8 m/s | 3.9 |
| 1989 | 22.8°C | 20.9°C | 19.0°C | 25.0°C | 15.8°C | 29 mm | 83% | 2.7 m/s | 4.2 |
| 1988 | 24.3°C | 22.2°C | 20.1°C | 25.9°C | 18.6°C | 69 mm | 80% | 3.2 m/s | 3.7 |
| 1987 | 22.3°C | 20.3°C | 18.4°C | 25.2°C | 16.5°C | 67 mm | 80% | 2.8 m/s | 4.3 |
| 1986 | 24.3°C | 22.3°C | 20.4°C | 25.6°C | 18.0°C | 30 mm | 80% | 2.7 m/s | 4.1 |
| 1985 ❄️ | 22.4°C | 20.1°C | 17.7°C | 23.8°C | 15.2°C | 24 mm | 74% | 3.1 m/s | 4.1 |
| 1984 | 23.1°C | 20.8°C | 18.4°C | 24.7°C | 13.0°C | 39 mm | 77% | 2.7 m/s | 3.1 |
| 1983 | 22.5°C | 20.4°C | 18.4°C | 24.9°C | 12.9°C | 20 mm | 79% | 3 m/s | — |
| 1982 | 22.9°C | 20.2°C | 17.5°C | 26.9°C | 15.7°C | 12 mm | 71% | 2.7 m/s | — |
| 1981 | 24.4°C | 22.6°C | 20.7°C | 25.7°C | 18.3°C | 73 mm | 79% | 3.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 23.8°C with lows near 19.4°C (mean 21.6°C), based on 45 years of NASA POWER data.
July averages 44 mm of rainfall in Port Douglas, one of the drier months. The wettest on record was 120 mm in 2005.
The hottest July reached 29.4°C in 1995. The coldest dipped to 12.9°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.7°C. Daytime highs moved from 23.1°C to 24.6°C and overnight lows from 18.5°C to 20.3°C over the same span.
July is one of the cooler months of the year in Port Douglas and one of the drier months, so plan for around 23.8°C daytime highs and 19.4°C at night.
Yes — July is the coldest month of the year in Port Douglas, averaging 21.6°C.
For July in Port Douglas, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 19.4°C.
Relative humidity in July averages 78% — quite humid.
Average wind speed in July is 2.9 m/s. The windiest July on record averaged 3.5 m/s (2003).
The wettest July on record was 2005 with 120 mm. On average, July sees 44 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 Douglas 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.
