Weather in Mackay in May

Prime time. If you get to pick your dates, May is the one. Highs average 24.2 °C, lows 22 °C, and rain falls on 11 days — nothing in the month is working against you.

May ranks 7 of 12 in Mackay: past the worst of the year but short of August, which is the month to book if the dates are open.

Rain on 11 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. 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 May reaches 30 °C; the day barely swings — 2.2 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest May day reached 28.1 °C and the coldest night fell to 15.5 °C, and the wettest single day dropped 59 mm — roughly 109% of the month's rain in one day.

May is moderately variable: 11 mm in the driest year against 105 mm in the wettest, around an average of 54 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 15.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How May sits in the year

The month is on the way down: 1.9 °C cooler than April, with June dropping another 1.9 °C. The first week and the last are not the same trip.

Daylight in May

May sits at the dark end of Mackay's year — 11.1 hours of daylight against 13.4 at midsummer, losing 0.4 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 25.8 °C in May — warm enough to stay in as long as you like. 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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

May 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, 3 days less rain. Rockhampton is close enough to be a coin toss — 2 °C warmer, 5 days less rain.

So: May works, with August the better month by 14 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Mackay

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