Weather in Mackay in August

Prime time. If you get to pick your dates, August is the one. Highs average 21.9 °C, lows 19.2 °C, and rain falls on 3 days — nothing in the month is working against you.

August is the highest-scoring month of the twelve. The nearest rival is September, and the month at the other end of the year is February.

Rain falls on only 3 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 August reaches 30 °C; the day barely swings — 2.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 25.9 °C and the coldest night fell to 12.8 °C, and the wettest single day dropped 46 mm — roughly 230% of the month's rain in one day.

This is the volatile part. August rainfall has ranged from 1 mm to 69 mm across the twenty years measured — a 68 mm spread around an average of 20 mm. The average is real but almost no individual August looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 13.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 72%.

How August sits in the year

Temperatures hold steady either side: 21.5 °C in July, 21.9 here, 23.7 in September. Nothing about the timing within the month matters much.

Daylight in August

August sits at the dark end of Mackay's year — 11.4 hours of daylight against 13.4 at midsummer, gaining 0.5 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 23 °C in August — 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.

August 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 — 2.3 °C warmer, the same number of rain days. Rockhampton is close enough to be a coin toss — 3.4 °C warmer, the same number of rain days.

So: August is the answer for Mackay. If it is booked out or priced out, September is the next best thing at 0 points behind, and February is the month to keep off the shortlist.

Every month in Mackay

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