How warm is it in Sydney in July?

Daytime highs averaged 17.2 °C, night-time lows 12.2 °C. The highest value of the past 10 years was 23.0 °C (30 Jul 2017), the lowest 7.3 °C (16 Jul 2018).

How often does it rain in Sydney in July?

On average there were 5.5 rain days (at least 1 mm) with 51.5 mm of precipitation in total.

How warm is the sea in Sydney in July?

The sea temperature averaged 18.2 °C (open-sea point approx. 10 km from the town).

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Sydney weather in July: temperature & rain

Photo: Diliff · CC BY-SA 3.0

🇦🇺 Weather in Sydney in July

This is what the weather in Sydney (New South Wales, Australia) was like in July over the years 2017–2026.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

17.2 °C

15.9 °C – 18.6 °C

Avg. night-time low

12.2 °C

11.2 °C – 13.3 °C

Avg. rain days in period

5.5

18 % of days · ≥ 1.0 mm

Avg. precipitation in period

51.5 mm

2.4 mm – 236 mm

Avg. cloud cover

50 %

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

Avg. sea temperature

18.2 °C

Sea temperature available for 5 of 10 years.

Extremes: Highest temperature 23.0 °C (30 Jul 2017) · Lowest temperature 7.3 °C (16 Jul 2018) · Avg. daily peak wind 20 km/h

Weather mix of all days

98Sunny
108Partly cloudy
48Cloudy
35Light rain
20Rain

Summary

On average 17.2 °C during the day and 12.2 °C at night.
On average 5.5 rain days (Rain day = at least 1.0 mm of precipitation) with 51.5 mm of precipitation in total.
The sea averaged 18.2 °C.
Prevailing weather: Partly cloudy.
Warmest year: 2023 (avg. 18.6 °C), coolest: 2022 (avg. 15.9 °C).
Wettest year: 2022 (236 mm), driest: 2018 (2.4 mm).
Extremes: 23.0 °C on 30 Jul 2017 and 7.3 °C on 16 Jul 2018.

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

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max17.8°Avg. min13.3°
Rain days
7 Rain days
Precipitation
17.9 mm
Avg. cloud cover
–
Sea temperature
18.9 °C
Max 20.9 °C · Min 9.7 °C
2025
Avg. max16.2°Avg. min12.0°
Rain days
7 Rain days
Precipitation
75.4 mm
Avg. cloud cover
47 % cloudy
Sea temperature
18.2 °C
Max 18.8 °C · Min 9.4 °C
2024
Avg. max16.1°Avg. min11.9°
Rain days
8 Rain days
Precipitation
24.2 mm
Avg. cloud cover
56 % cloudy
Sea temperature
17.4 °C
Max 18.9 °C · Min 8.9 °C
2023
Avg. max18.6°Avg. min12.4°
Rain days
3 Rain days
Precipitation
8.4 mm
Avg. cloud cover
37 % cloudy
Sea temperature
18.0 °C
Max 22.5 °C · Min 9.5 °C
2022
Avg. max15.9°Avg. min12.8°
Rain days
16 Rain days
Precipitation
236 mm
Avg. cloud cover
63 % cloudy
Sea temperature
18.6 °C
Max 18.4 °C · Min 9.6 °C
2021
Avg. max16.5°Avg. min11.4°
Rain days
4 Rain days
Precipitation
18.8 mm
Avg. cloud cover
57 % cloudy
Sea temperature
–
Max 21.3 °C · Min 8.6 °C
2020
Avg. max16.7°Avg. min12.6°
Rain days
6 Rain days
Precipitation
107 mm
Avg. cloud cover
61 % cloudy
Sea temperature
–
Max 20.4 °C · Min 10.1 °C
2019
Avg. max18.0°Avg. min12.3°
Rain days
2 Rain days
Precipitation
14.8 mm
Avg. cloud cover
46 % cloudy
Sea temperature
–
Max 21.0 °C · Min 9.4 °C
2018
Avg. max18.0°Avg. min11.2°
Rain days
1 Rain days
Precipitation
2.4 mm
Avg. cloud cover
34 % cloudy
Sea temperature
–
Max 22.4 °C · Min 7.3 °C
2017
Avg. max17.7°Avg. min11.7°
Rain days
1 Rain days
Precipitation
10.6 mm
Avg. cloud cover
48 % cloudy
Sea temperature
–
Max 23.0 °C · Min 9.5 °C

Frequently asked questions

How warm is it in Sydney in July?: Daytime highs averaged 17.2 °C, night-time lows 12.2 °C. The highest value of the past 10 years was 23.0 °C (30 Jul 2017), the lowest 7.3 °C (16 Jul 2018).
How often does it rain in Sydney in July?: On average there were 5.5 rain days (at least 1 mm) with 51.5 mm of precipitation in total.
How warm is the sea in Sydney in July?: The sea temperature averaged 18.2 °C (open-sea point approx. 10 km from the town).

Check your exact travel dates

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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); Sea measuring point approx. 10 km from the location (-33.870, 151.320)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)