Sydney weather in March
Sydney averages 25°C by day and 18°C at night in March, with the sea at 23°C and 16 days with at least 1 mm of rain. It cools by about 2°C into April.
Day
25°C
Night
18°C
Sea
23°C
Rainy days
16
Flight from London
20½h
What March feels like
March is hot but wet in Sydney: rainy season, so pack for showers.
The sea is 23°C: fine for swimming without a wetsuit.
It is rainy season, with rain on about 16 days.
Of the 48 sun destinations we track, Sydney is the #25 warmest in March.
Want it warmer in March?
These are hotter than Sydney this month for at most an hour and a half more flying:
Sydney weather by month
March is highlighted. Compare with February and April, or see the full year in Sydney.
Sydney in March: quick answers
Is Sydney hot in March?
March is hot but wet in Sydney: rainy season, so pack for showers. Average highs are 25°C and lows 18°C.
Can you swim in Sydney in March?
The sea is 23°C: fine for swimming without a wetsuit.
Does it rain in Sydney in March?
It is rainy season, with rain on about 16 days.
What is the warmest month in Sydney?
January, at an average high of 27°C. The coolest is June at 17°C.
How long is the flight to Sydney from the UK?
About 20½h direct from London, estimated from the 17,016 km distance. Check your airline for exact times.
Still choosing? See where is hot in March for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in March from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. A rainy day has at least 1 mm of rain. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
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