How warm is it in Sydney in October?

Daytime highs averaged 21.8 °C, night-time lows 15.9 °C. The highest value of the past 10 years was 31.9 °C (20 Oct 2025), the lowest 11.8 °C (9 Oct 2022).

How often does it rain in Sydney in October?

On average there were 9.7 rain days (at least 1 mm) with 67.0 mm of precipitation in total.

Holiday Weather Rewind

Destinations Method & data

Loading weather data…

We are fetching the daily values for every year. The first time, this takes a few seconds.

Sydney weather in October: temperature & rain

Photo: Diliff · CC BY-SA 3.0

🇦🇺 Weather in Sydney in October

This is what the weather in Sydney (New South Wales, Australia) was like in October over the years 2016–2025.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

21.8 °C

19.7 °C – 24.1 °C

Avg. night-time low

15.9 °C

14.8 °C – 16.8 °C

Avg. rain days in period

9.7

31 % of days · ≥ 1.0 mm

Avg. precipitation in period

67.0 mm

25.3 mm – 169 mm

Avg. cloud cover

58 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

–

Sea temperature unavailable for today (daily limit).

Extremes: Highest temperature 31.9 °C (20 Oct 2025) · Lowest temperature 11.8 °C (9 Oct 2022) · Avg. daily peak wind 22 km/h

Weather mix of all days

58Sunny
102Partly cloudy
53Cloudy
59Light rain
38Rain

Summary

On average 21.8 °C during the day and 15.9 °C at night.
On average 9.7 rain days (Rain day = at least 1.0 mm of precipitation) with 67.0 mm of precipitation in total.
Prevailing weather: Partly cloudy.
Warmest year: 2025 (avg. 24.1 °C), coolest: 2022 (avg. 19.7 °C).
Wettest year: 2022 (169 mm), driest: 2023 (25.3 mm).
Extremes: 31.9 °C on 20 Oct 2025 and 11.8 °C on 9 Oct 2022.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2025
Avg. max24.1°Avg. min16.8°
Rain days
8 Rain days
Precipitation
30.2 mm
Avg. cloud cover
57 % cloudy
Sea temperature
–
Max 31.9 °C · Min 14.1 °C
2024
Avg. max21.7°Avg. min16.0°
Rain days
6 Rain days
Precipitation
27.3 mm
Avg. cloud cover
60 % cloudy
Sea temperature
–
Max 26.5 °C · Min 13.9 °C
2023
Avg. max22.9°Avg. min16.0°
Rain days
7 Rain days
Precipitation
25.3 mm
Avg. cloud cover
42 % cloudy
Sea temperature
–
Max 29.4 °C · Min 13.7 °C
2022
Avg. max19.7°Avg. min15.8°
Rain days
17 Rain days
Precipitation
169 mm
Avg. cloud cover
74 % cloudy
Sea temperature
–
Max 23.7 °C · Min 11.8 °C
2021
Avg. max21.3°Avg. min15.3°
Rain days
13 Rain days
Precipitation
64.9 mm
Avg. cloud cover
54 % cloudy
Sea temperature
–
Max 28.4 °C · Min 13.2 °C
2020
Avg. max21.6°Avg. min15.9°
Rain days
13 Rain days
Precipitation
120 mm
Avg. cloud cover
57 % cloudy
Sea temperature
–
Max 27.7 °C · Min 12.5 °C
2019
Avg. max22.2°Avg. min15.6°
Rain days
4 Rain days
Precipitation
26.8 mm
Avg. cloud cover
50 % cloudy
Sea temperature
–
Max 29.8 °C · Min 12.8 °C
2018
Avg. max20.4°Avg. min16.1°
Rain days
15 Rain days
Precipitation
121 mm
Avg. cloud cover
71 % cloudy
Sea temperature
–
Max 25.4 °C · Min 14.3 °C
2017
Avg. max22.2°Avg. min16.6°
Rain days
8 Rain days
Precipitation
60.2 mm
Avg. cloud cover
63 % cloudy
Sea temperature
–
Max 29.0 °C · Min 13.1 °C
2016
Avg. max21.8°Avg. min14.8°
Rain days
6 Rain days
Precipitation
25.3 mm
Avg. cloud cover
57 % cloudy
Sea temperature
–
Max 28.3 °C · Min 12.1 °C

Frequently asked questions

How warm is it in Sydney in October?: Daytime highs averaged 21.8 °C, night-time lows 15.9 °C. The highest value of the past 10 years was 31.9 °C (20 Oct 2025), the lowest 11.8 °C (9 Oct 2022).
How often does it rain in Sydney in October?: On average there were 9.7 rain days (at least 1 mm) with 67.0 mm of precipitation in total.

Check your exact travel dates

Choose your travel period – we show the weather for exactly those days.

Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)