Weather in Sydney in March

A good month. March works. It is not the peak, but nothing about it fights you. Highs average 24 °C, lows 19.7 °C, and rain falls on 13 days — nothing in the month is working against you.

Sydney barely has seasons. March scores 75 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. Worth keeping in perspective: March is the weakest month of Sydney's year and it is still a perfectly good one. The downside here is small.

Rain on 13 days, 3 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: the day barely swings — 4.3 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest March day reached 32.8 °C and the coldest night fell to 13.3 °C, and the wettest single day dropped 53 mm — roughly 51% of the month's rain in one day.

March is moderately variable: 36 mm in the driest year against 273 mm in the wettest, around an average of 104 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 11.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How March sits in the year

Temperatures hold steady either side: 25 °C in February, 24 here, 22.1 in April. Nothing about the timing within the month matters much.

Daylight in March

12.4 hours of daylight, losing 1.1 hours across the month. That is between Sydney's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 23.8 °C in March — comfortable for a proper swim. This is the warmest the water gets all year.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

March 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, 1 day more rain. Katoomba is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: March works, with September the better month by 11 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 March.