Weather in Port Douglas in July

Prime time. If you get to pick your dates, July is the one. Highs average 24.7 °C, lows 20.4 °C, and rain falls on 9 days — nothing in the month is working against you.

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

Rain on 9 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 July reaches 30 °C; the day barely swings — 4.3 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 28.9 °C and the coldest night fell to 15.3 °C, and the wettest single day dropped 28 mm — roughly 70% of the month's rain in one day.

July is moderately variable: 11 mm in the driest year against 120 mm in the wettest, around an average of 40 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 10.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 77%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 25.1 °C in June, 24.7 here, 25.5 in August. Nothing about the timing within the month matters much.

Daylight in July

Port Douglas sits close enough to the equator that daylight barely moves all year — 11.2 hours in July, against a range of just 1.9 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 24.9 °C in July — warm enough to stay in as long as you like. The sea peaks at 29.2 °C in February and bottoms out at 24.7 °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.

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

July in Port Douglas versus nearby

If Port Douglas is one option among several, the nearby comparison is worth making. Cairns is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Townsville is a better bet in July — within a degree on temperature, 6 days less rain.

So: July is effectively as good as it gets here — 6 points behind August, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Port Douglas

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