Weather in Sydney in July

A good month. July works. It is not the peak, but nothing about it fights you. Highs average 16.4 °C, lows 11.5 °C, and rain falls on 7 days — nothing in the month is working against you.

Sydney barely has seasons. July scores 76 out of 100 against a best of 86 in September — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 7 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16.4 °C days and 11.5 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 22.8 °C and the coldest night fell to 5.8 °C, and the wettest single day dropped 70 mm — roughly 159% of the month's rain in one day.

July is moderately variable: 2 mm in the driest year against 122 mm in the wettest, around an average of 44 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 12 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 72%.

How July sits in the year

Temperatures hold steady either side: 17.1 °C in June, 16.4 here, 17.2 in August. Nothing about the timing within the month matters much.

Daylight in July

July sits at the dark end of Sydney's year — 10.1 hours of daylight against 14.4 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 19.1 °C in July — swimmable, but it takes a moment to commit. The sea peaks at 24.1 °C in February and bottoms out at 18.7 °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

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.

July in Sydney versus nearby

If Sydney is one option among several, the nearby comparison is worth making. Central Coast is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Katoomba is the weaker option in July — 6.1 °C cooler, the same number of rain days.

So: July works, with September the better month by 10 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Sydney

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