Weather in Mackay in July

Prime time. If you get to pick your dates, July is the one. Highs average 21.5 °C, lows 18.9 °C, and rain falls on 5 days — nothing in the month is working against you.

July ranks 3 of 12 in Mackay. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average July reaches 30 °C; the day barely swings — 2.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 25.7 °C and the coldest night fell to 12.9 °C, and the wettest single day dropped 50 mm — roughly 161% of the month's rain in one day.

This is the volatile part. July rainfall has ranged from 1 mm to 120 mm across the twenty years measured — a 119 mm spread around an average of 31 mm. The average is real but almost no individual July looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 14.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How July sits in the year

Temperatures hold steady either side: 22.3 °C in June, 21.5 here, 21.9 in August. Nothing about the timing within the month matters much.

Daylight in July

July sits at the dark end of Mackay's year — 11 hours of daylight against 13.4 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 23.3 °C in July — comfortable for a proper swim. The sea peaks at 28.5 °C in February and bottoms out at 23 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, November is the trade worth considering — 12 points weaker on weather, and materially quieter.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Mackay versus nearby

If Mackay is one option among several, the nearby comparison is worth making. Airlie Beach is close enough to be a coin toss — within a degree on temperature, 2 days less rain. Rockhampton is close enough to be a coin toss — 2 °C warmer, 1 day less rain.

So: July is effectively as good as it gets here — 4 points behind August, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Mackay

See all twelve months in Mackay, or where else to go in July.