Sydney Weather in August
Australia · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Sydney sees average temperatures ranging from a low of 8.8°C (47.8°F) to a high of 18.7°C (65.7°F), with a mean of 13.3°C (55.9°F). Compared to the annual average of 17.3°C (63.1°F), this month is 4.0°C cooler than the yearly norm. Precipitation averages 57.8mm, making it approximately 42.0mm drier than the monthly average of 100.0mm. The city receives an average of 9.0 hours of sunshine per day during August, with relative humidity averaging 71.2%. Wind speeds reach an average maximum of 20.0 km/h. For travelers, this month offers a temperature experience in Sydney, with drier-than-average conditions compared to the rest of the year.
The numbers show something travelers often miss: Sydney's 'winter' (June-August) averages 17°C — warmer than London's summer. I spent a July there expecting cold and instead got perfect hiking weather. The real challenge is the UV index in summer (December-February). The data is clear: if you're planning beach days, March-April give you warmth without the extreme UV. Christmas on the beach still feels wrong to me, but the locals love it.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 12.1°C (53.8°F) | 13.3°C (55.9°F) | 15.7°C (60.3°F) |
| Rainfall | 102.6mm | 57.8mm | 50.9mm |
| Sunshine | 8.4 hrs | 9.0 hrs | 10.1 hrs |
| Humidity | 73.6% | 71.2% | 66.9% |
| Wind | 20.5 km/h | 20.0 km/h | 22.4 km/h |
| Rainy Days | 13.0 | 13.8 | 13.0 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Sydney in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Sydney in August?
The average temperature in Sydney during August ranges from 8.8°C (47.8°F) to 18.7°C (65.7°F), with a mean of 13.3°C (55.9°F).
How much does it rain in Sydney in August?
Sydney receives an average of 57.8mm of precipitation in August, spread across approximately 13.8 rainy days.
What should I pack for Sydney in August?
Based on August weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is August a good time to visit Sydney?
August is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Sydney
Cities with Similar August Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -33.87°, 151.21°. Timezone: Australia/Sydney. Last updated: 2026-07-30.