Weather in Sydney in July

A good month. July works. It is not the peak, but nothing about it fights you. Highs average 21.1 °C, lows 14.8 °C, and rain falls on 13 days — nothing in the month is working against you.

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

Rain on 13 days, 2 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. Across the twenty years measured, the hottest July day reached 28.5 °C and the coldest night fell to 9.4 °C, and the wettest single day dropped 32 mm — roughly 42% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 134 mm against 45 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 77 mm average is a reasonable planning figure, not a promise.

Wind sits around 17.6 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 84%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 15.5 °C in June, 21.1 here, 22.4 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Sydney's year: 15.4 hours of daylight, losing 0.8 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 14.7 °C in July — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. This is the warmest the water gets all year.

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 Sydney versus nearby

If Sydney is one option among several, the nearby comparison is worth making. Halifax is close enough to be a coin toss — within a degree on temperature, 2 days less rain. Moncton is close enough to be a coin toss — 3.4 °C warmer, 1 day more rain.

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

Every month in Sydney

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