July is one of the cooler months of the year in Mackay, with average highs near 21.3°C and lows around 18.6°C (mean 20°C). It is one of the drier months, averaging 36 mm of rainfall and 73% relative humidity across the period.
July is one of the cooler months of the year in Mackay. Across 45 years of records, the warmest July in Mackay was 2023 — when the month averaged 21.5°C — while the coldest was 2007 at 18.2°C. Typical July days reach 21.3°C with nights near 18.6°C. The long-term trend is warming, about 0.2°C per decade.
July is one of the drier months in Mackay, averaging 36 mm of rainfall. The wettest July on record was 1988 with 201 mm, while the driest was 2007 at 1 mm.
Relative humidity in Mackay during July averages 73%. The most humid Julys were 1990 and 2012 at 79%, and the least humid was 1991 at 65%.
July receives about 4.1 kWh/m²/day of solar energy in Mackay. The sunniest July was 2007 at 4.6 kWh/m²/day, and the cloudiest was 1984 at 3.3.
Average wind speed in Mackay during July is 3.9 m/s. The windiest Julys were 1997, 2003 and 2005 at 4.8 m/s, while the calmest was 2025 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.4°C | 20.1°C | 19.9°C | 20.3°C | 20.2°C | +0.8°C |
| Avg High | 20.7°C | 21.4°C | 21.3°C | 21.6°C | 21.7°C | +1°C |
| Avg Low | 18.0°C | 18.7°C | 18.6°C | 19.1°C | 18.8°C | +0.8°C |
| Avg Rain | 63 mm | 25 mm | 25 mm | 33 mm | 39 mm | -24 mm |
July temperatures in Mackay have risen by about 1.1°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 11.9°C (1983) to a record high of 26.5°C (1995).
Rainfall in July is one of the drier months, averaging 36 mm, with a wettest year of 201 mm.
One of the best times to visit Mackay
July is one of the best times to visit Mackay. Expect days averaging 21.3°C and nights around 18.6°C (mean 20°C) — cooler than Mackay's yearly average — with moderate rainfall (36 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 | 22.1°C | 20.7°C | 19.2°C | 24.4°C | 15.3°C | 19 mm | 73% | 3.2 m/s | 4.2 |
| 2024 | 21.6°C | 20.1°C | 18.7°C | 23.3°C | 14.3°C | 10 mm | 71% | 4.2 m/s | 4.3 |
| 2023 🔥 | 22.7°C | 21.5°C | 20.2°C | 24.7°C | 15.8°C | 63 mm | 74% | 4.6 m/s | 3.6 |
| 2022 | 19.8°C | 18.4°C | 17.0°C | 22.1°C | 13.4°C | 98 mm | 78% | 4.3 m/s | 4 |
| 2021 | 22.3°C | 20.7°C | 19.2°C | 25.9°C | 16.0°C | 8 mm | 73% | 3.5 m/s | 4.3 |
| 2020 | 21.4°C | 19.9°C | 18.4°C | 23.0°C | 15.3°C | 33 mm | 72% | 4.1 m/s | 4.1 |
| 2019 | 21.5°C | 20.2°C | 19.0°C | 22.3°C | 15.0°C | 29 mm | 75% | 4.1 m/s | 4.2 |
| 2018 | 21.8°C | 20.5°C | 19.2°C | 23.8°C | 15.8°C | 6 mm | 74% | 3.4 m/s | 4.4 |
| 2017 | 22.6°C | 21.4°C | 20.2°C | 24.6°C | 17.1°C | 5 mm | 74% | 3.5 m/s | 4.4 |
| 2016 | 22.5°C | 21.3°C | 20.1°C | 24.2°C | 16.4°C | 105 mm | 77% | 3.9 m/s | 3.9 |
| 2015 | 21.6°C | 20.3°C | 19.0°C | 23.5°C | 14.6°C | 11 mm | 73% | 3.9 m/s | 4.1 |
| 2014 | 20.9°C | 19.5°C | 18.2°C | 23.3°C | 14.8°C | 6 mm | 71% | 3.6 m/s | 4.4 |
| 2013 | 21.8°C | 20.7°C | 19.6°C | 22.8°C | 16.1°C | 25 mm | 79% | 4.7 m/s | 3.8 |
| 2012 | 20.1°C | 18.8°C | 17.5°C | 22.2°C | 14.1°C | 120 mm | 79% | 4.4 m/s | 3.6 |
| 2011 | 20.6°C | 19.2°C | 17.8°C | 22.4°C | 15.1°C | 10 mm | 72% | 3.8 m/s | 4.4 |
| 2010 | 22.3°C | 21.1°C | 20.0°C | 23.6°C | 17.3°C | 16 mm | 78% | 4.1 m/s | 3.8 |
| 2009 | 21.9°C | 20.5°C | 19.0°C | 25.7°C | 15.4°C | 1 mm | 69% | 3.9 m/s | 4.4 |
| 2008 | 21.0°C | 19.7°C | 18.4°C | 23.1°C | 12.9°C | 111 mm | 76% | 3.7 m/s | 3.7 |
| 2007 ❄️ | 19.7°C | 18.2°C | 16.8°C | 21.8°C | 13.0°C | 1 mm | 68% | 3.7 m/s | 4.6 |
| 2006 | 21.5°C | 20.3°C | 19.1°C | 23.2°C | 15.9°C | 36 mm | 77% | 4 m/s | 3.8 |
| 2005 | 22.0°C | 20.8°C | 19.6°C | 24.5°C | 15.0°C | 50 mm | 73% | 4.8 m/s | 3.8 |
| 2004 | 21.5°C | 20.3°C | 19.1°C | 23.8°C | 14.5°C | 9 mm | 73% | 3.9 m/s | 4.2 |
| 2003 | 21.6°C | 20.5°C | 19.4°C | 24.3°C | 15.1°C | 21 mm | 72% | 4.8 m/s | 4.1 |
| 2002 | 21.3°C | 19.9°C | 18.5°C | 23.3°C | 16.2°C | 3 mm | 68% | 3.8 m/s | 4.3 |
| 2001 | 21.8°C | 20.2°C | 18.7°C | 23.7°C | 15.8°C | 14 mm | 68% | 3.6 m/s | 4.4 |
| 2000 | 20.2°C | 18.6°C | 17.1°C | 22.1°C | 14.2°C | 6 mm | 72% | 3.4 m/s | 4.5 |
| 1999 | 20.9°C | 19.4°C | 17.9°C | 23.7°C | 15.0°C | 34 mm | 75% | 4.3 m/s | 3.9 |
| 1998 | 22.2°C | 20.9°C | 19.7°C | 24.9°C | 15.4°C | 27 mm | 77% | 3.9 m/s | 3.8 |
| 1997 | 20.9°C | 19.8°C | 18.6°C | 22.3°C | 16.1°C | 20 mm | 78% | 4.8 m/s | 3.8 |
| 1996 | 21.6°C | 19.9°C | 18.3°C | 25.7°C | 14.7°C | 44 mm | 67% | 3.8 m/s | 4.1 |
| 1995 | 22.2°C | 20.6°C | 18.9°C | 26.5°C | 17.0°C | 1 mm | 68% | 3.4 m/s | 4.5 |
| 1994 | 20.9°C | 19.7°C | 18.6°C | 22.3°C | 16.1°C | 33 mm | 70% | 4.5 m/s | 4.1 |
| 1993 | 22.2°C | 21.1°C | 20.0°C | 24.2°C | 17.3°C | 45 mm | 78% | 3.7 m/s | 3.8 |
| 1992 | 21.3°C | 20.0°C | 18.7°C | 23.3°C | 13.7°C | 10 mm | 70% | 4.1 m/s | 4.2 |
| 1991 | 21.5°C | 20.0°C | 18.5°C | 24.4°C | 16.3°C | 13 mm | 65% | 3.6 m/s | 4.3 |
| 1990 | 20.4°C | 19.1°C | 17.9°C | 22.1°C | 13.1°C | 20 mm | 79% | 3.3 m/s | 4.2 |
| 1989 | 19.7°C | 18.6°C | 17.4°C | 22.7°C | 13.1°C | 67 mm | 78% | 3.8 m/s | 3.6 |
| 1988 🌧️ | 21.1°C | 20.0°C | 18.9°C | 23.1°C | 15.8°C | 201 mm | 78% | 4.2 m/s | 3.6 |
| 1987 | 20.6°C | 19.2°C | 17.9°C | 22.0°C | 14.6°C | 59 mm | 71% | 3.7 m/s | 4.1 |
| 1986 | 21.7°C | 20.4°C | 19.1°C | 24.8°C | 14.0°C | 41 mm | 78% | 4 m/s | 3.8 |
| 1985 | 19.9°C | 18.6°C | 17.2°C | 21.2°C | 12.6°C | 58 mm | 73% | 4 m/s | 4.3 |
| 1984 | 20.9°C | 19.2°C | 17.5°C | 22.6°C | 12.0°C | 94 mm | 74% | 3.6 m/s | 3.3 |
| 1983 | 20.1°C | 18.7°C | 17.3°C | 23.0°C | 11.9°C | 14 mm | 77% | 4.2 m/s | — |
| 1982 | 20.5°C | 18.9°C | 17.4°C | 22.7°C | 14.2°C | 6 mm | 68% | 3.8 m/s | — |
| 1981 | 21.7°C | 20.6°C | 19.5°C | 24.2°C | 15.8°C | 25 mm | 75% | 3.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 21.3°C with lows near 18.6°C (mean 20°C), based on 45 years of NASA POWER data.
July averages 36 mm of rainfall in Mackay, one of the drier months. The wettest on record was 201 mm in 1988.
The hottest July reached 26.5°C in 1995. The coldest dipped to 11.9°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.1°C. Daytime highs moved from 20.6°C to 21.7°C and overnight lows from 17.8°C to 18.9°C over the same span.
July is one of the cooler months of the year in Mackay and one of the drier months, so plan for around 21.3°C daytime highs and 18.6°C at night.
Yes — July is the coldest month of the year in Mackay, averaging 20°C.
For July in Mackay, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 18.6°C.
Relative humidity in July averages 73% — moderately humid.
Average wind speed in July is 3.9 m/s. The windiest July on record averaged 4.8 m/s (1997).
The wettest July on record was 1988 with 201 mm. On average, July sees 36 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 Mackay 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.
