Sydney Weather in September
Average highs run from 20°C on September 1 to 23°C on September 30, and lows from 11°C to 12°C. Normal precipitation for the month is 58 mm over about 7 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 22°C
- Average low
- 12°C
- Precipitation
- 58 mm
- Record high
- 36°CSep 19, 2023
- Record low
- 2°CSep 1, 1967
- Daylight
- 11 h 23 min to 12 h 23 min
- Cloud cover
- 47%
- Humidity
- 69%
- Dew point
- 10°C
- Wind
- 14.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 20°C | 11°C | 28°C 2024 | 2°C 1967 | 28% |
| Sep 2 | 20°C | 11°C | 31°C 1982 | 4°C 1945 | 28% |
| Sep 3 | 22°C | 11°C | 32°C 2020 | 5°C 1963 | 28% |
| Sep 4 | 21°C | 11°C | 29°C 2019 | 5°C 1954 | 28% |
| Sep 5 | 21°C | 12°C | 32°C 2026 | 5°C 1940 | 27% |
| Sep 6 | 20°C | 11°C | 32°C 2024 | 4°C 1945 | 26% |
| Sep 7 | 20°C | 11°C | 32°C 2013 | 4°C 1955 | 26% |
| Sep 8 | 20°C | 11°C | 32°C 1953 | 4°C 1946 | 25% |
| Sep 9 | 20°C | 12°C | 30°C 1981 | 5°C 1962 | 24% |
| Sep 10 | 20°C | 11°C | 34°C 2013 | 4°C 1947 | 24% |
| Sep 11 | 21°C | 11°C | 31°C 1981 | 6°C 1952 | 23% |
| Sep 12 | 21°C | 11°C | 33°C 1946 | 4°C 1970 | 22% |
| Sep 13 | 22°C | 11°C | 35°C 2017 | 3°C 1939 | 23% |
| Sep 14 | 22°C | 12°C | 29°C 2007 | 5°C 1962 | 22% |
| Sep 15 | 23°C | 12°C | 33°C 2018 | 5°C 1943 | 21% |
| Sep 16 | 22°C | 12°C | 35°C 2023 | 7°C 1954 | 20% |
| Sep 17 | 22°C | 12°C | 33°C 2020 | 4°C 1944 | 20% |
| Sep 18 | 22°C | 12°C | 34°C 2023 | 4°C 1943 | 21% |
| Sep 19 | 23°C | 13°C | 36°C 2023 | 6°C 1972 | 22% |
| Sep 20 | 22°C | 13°C | 36°C 2023 | 5°C 1969 | 21% |
| Sep 21 | 22°C | 12°C | 32°C 1941 | 3°C 1943 | 22% |
| Sep 22 | 24°C | 13°C | 34°C 2003 | 5°C 1963 | 23% |
| Sep 23 | 23°C | 13°C | 34°C 2017 | 6°C 1962 | 22% |
| Sep 24 | 23°C | 13°C | 35°C 2006 | 5°C 1946 | 23% |
| Sep 25 | 22°C | 13°C | 35°C 1980 | 5°C 1969 | 23% |
| Sep 26 | 21°C | 13°C | 35°C 1965 | 6°C 1946 | 24% |
| Sep 27 | 22°C | 13°C | 32°C 1987 | 6°C 1946 | 25% |
| Sep 28 | 24°C | 13°C | 34°C 2008 | 6°C 1968 | 23% |
| Sep 29 | 24°C | 13°C | 36°C 2000 | 7°C 1948 | 24% |
| Sep 30 | 23°C | 12°C | 34°C 2014 | 6°C 1962 | 25% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+10).
- September 1
- sunrise 6:14 AM, sunset 5:37 PM
- September 30
- sunrise 5:34 AM, sunset 5:57 PM
Other months
Sources
Records: NOAA GHCN-Daily, station ASN00066037, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.