Sydney weather by month
Sydney is warmest in January (27°C average high) and coolest in June (17°C). For warm, mostly dry weather, go October to December. The sea is warm enough for easy swimming December to May.
Warmest month
January
27°C
Coolest month
June
17°C
Wettest month
March
16 rainy days
Flight from London
20½h
direct, estimated
Sydney temperature by month
Tap a month for the detail and warmer alternatives.
When to go to Sydney
What is the best month to visit Sydney for sun?
For warm, mostly dry days, go October to December, going by our 10-year averages.
What is the hottest month in Sydney?
January averages 27°C. June is the coolest at 17°C.
When does it rain most in Sydney?
March, with about 16 wet days.
When is the sea warm enough to swim in Sydney?
December to May, when the sea averages 21°C or more.
Planning the trip? Start with our 3-day Sydney itinerary, and see the best time to visit Sydney for crowds and events.
How we measured this
Daily averages from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis); sea temperatures are 2023 to 2025 averages from the Open-Meteo marine archive. A rainy day has at least 1 mm of rain.
Going to Sydney?
Save the places you find on TikTok and Instagram for Sydney to one map, and Dream Trip will plan the days around them.
