Sydney in September
Find out everything about the water temperature in Sydney in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:
59.8 °F
Average:
63.7 °F
Maximum:
67.4 °F
Sea water temperature in Sydney in September
In the city of Sydney, the month of September is somewhat too cool for swimming. The minimum recorded temperature during this month was 59.8°F on September 5, 2018, with an average temperature being 63.7°F and a maximum temperature reaching 67.4°F on September 29, 2016.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 63.1°F | 62.9°F | 62.5°F |
| Sep 2 | 62.9°F | 62.0°F | 63.1°F |
| Sep 3 | 63.0°F | 61.7°F | 63.2°F |
| Sep 4 | 62.9°F | 61.4°F | 62.7°F |
| Sep 5 | 63.1°F | 62.3°F | 63.3°F |
| Sep 6 | 63.1°F | 62.9°F | 62.9°F |
| Sep 7 | 63.4°F | 63.1°F | 61.9°F |
| Sep 8 | 63.4°F | 63.7°F | 62.2°F |
| Sep 9 | 63.4°F | 63.3°F | 62.5°F |
| Sep 10 | 63.1°F | 61.9°F | 62.2°F |
| Sep 11 | 63.2°F | 62.0°F | 62.4°F |
| Sep 12 | 63.4°F | 63.3°F | 62.0°F |
| Sep 13 | 63.4°F | 63.8°F | 62.0°F |
| Sep 14 | 63.3°F | 62.2°F | 62.1°F |
| Sep 15 | 63.5°F | 62.4°F | 62.4°F |
| Sep 16 | 63.9°F | 64.1°F | 63.0°F |
| Sep 17 | 64.0°F | 64.9°F | 64.0°F |
| Sep 18 | 64.0°F | 64.9°F | 64.4°F |
| Sep 19 | 63.9°F | 64.3°F | 65.4°F |
| Sep 20 | 64.0°F | 63.3°F | 65.3°F |
| Sep 21 | 64.0°F | 63.7°F | 64.5°F |
| Sep 22 | 64.1°F | 64.1°F | 64.7°F |
| Sep 23 | 64.0°F | 62.7°F | 64.4°F |
| Sep 24 | 64.0°F | 63.3°F | 64.2°F |
| Sep 25 | 64.1°F | 63.6°F | 64.2°F |
| Sep 26 | 64.3°F | 63.8°F | 63.8°F |
| Sep 27 | 64.3°F | 63.9°F | 64.3°F |
| Sep 28 | 64.6°F | 64.5°F | 64.6°F |
| Sep 29 | 64.9°F | 64.8°F | 64.4°F |
| Sep 30 | 65.0°F | 64.8°F | 65.4°F |
In Sydney, the months February through March offer comfortable swimming conditions, which amounts to 69 swimming days.
The warmest water in Sydney was recorded on February 2, 2020, reaching a 78.2°F. While the coldest temperature occurred on August 25, 2018, dipping to 59.4°F. The average readings by season are 72.7°F in Winter, 71.6°F in Spring, 64.9°F in Summer, and 66.0°F in Autumn.
The average temperature in September is slightly warmer than August's average of 63.4°F. And in October, the temperature is expected to rise further, potentially reaching an average of 66.0°F.