Sydney weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Excellent
Best time to visit: April – May, July – February
What is the weather like in Sydney in October?
In October, Sydney is warm: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 19.4 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 53 mm. All in all, October is an excellent month for a holiday in Sydney.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 93 | 89 | 85 |
| Day | 20° | 21° | 22° |
| Night | 12° | 15° | 16° |
| Sea | 19° | 19° | 20° |
| Sun | 9 h | 8 h | 8 h |
| Rain days | 7 | 8 | 9 |
More details for October
- Daylight
- 12 h 53 min06:14 – 19:07
- UV index
- 9 · very highclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 48 %on average
- Hot days
- 1 day30 °C or more
- Time zone
- UTC+11Australia/Sydney
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %88 %
- Few rainy daysweight 30 %70 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Sydney in October: quick answers
Is Sydney hot in October?
Warm rather than hot: in October, daytime highs in Sydney average 21 °C and nights cool to about 15 °C.
Can you swim in Sydney in October?
Only if you don't mind cold water: in October the sea averages just 19.4 °C. Comfortable swimming is possible from November to May.
Does it rain much in Sydney in October?
Rain falls on about 8 days, adding up to 53 mm.
Sydney month by month
The whole year in SydneyAll destinations: Australia
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)