01Weather
Sydney weather in September
Afternoons in September average 22.5 °C (72 °F) and nights cool to 12.3 °C (54 °F). The month brings about 57 mm (2.2 in) of rain spread over roughly 7 days. Compared with August it is 2.9 °C warmer; October is 1.8 °C warmer again.
What the averages hide
| In a typical September | Value | What it means |
|---|---|---|
| Warm afternoons (90th percentile) | 29 °C / 83 °F | one day in ten is at least this warm |
| Cool afternoons (10th percentile) | 17 °C / 63 °F | one day in ten stays below this |
| Cold nights (10th percentile) | 9 °C / 48 °F | one night in ten is colder than this |
| Days above 30 °C (86 °F) | 1.8 | per month, average 2016–2025 |
| Nights at or below 0 °C (32 °F) | 0.0 | frost mornings per month |
| Chance of rain on any given day | 22 % | at least 1 mm |
| Hottest / coldest September day 2016–2025 | 35.9 °C / 6.3 °C | extremes in the ten-year record |
02Daylight
Sunrise, sunset and the length of the day
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 1 September | 06:13 | 17:37 | 11.4 h |
| 15 September | 05:54 | 17:46 | 11.9 h |
| 30 September | 05:33 | 17:57 | 12.4 h |
Daylight grows by about 60 minutes over the month. Times are local (Australia/Sydney).
03Crowds
How busy Sydney is in September
moderate The main sights are moderate in September. What drives it:
- spring blossoms
- spring school holidays late month
- Sydney Marathon
04Public holidays
Public holidays in September 2027
No public holidays in Australia fall in September, so shops and museums keep normal hours all month.
05Events
What's on in Sydney in September
Every year in September
| Event | When | Type |
|---|---|---|
| Sydney Marathon | September | sport |
07Packing
What to pack for Sydney in September
- layers: t-shirt plus a light jacket for evenings
- comfortable walking shoes
- a compact umbrella for occasional showers
08Editor's notes
What the numbers don't tell you
September is spring, with warming days around 20 °C, blossom in the Botanic Garden, the Sydney Running Festival over the Harbour Bridge on a Sunday in mid-September and the spring school holidays in the final week. Weather is changeable, with windy days and rain on about eight days. Beach season has not quite begun, so it is a good-value window. The lifesaver patrols resume at the end of September.
The Sydney Fringe fills the inner west, and the AFL and NRL finals draw crowds to the stadiums. Whale watching continues with mothers and calves close to shore. Sea temperatures around 19 °C. Daylight passes twelve hours at the equinox, and daylight saving starts on the first Sunday of October. For jacarandas, the Labour Day long weekend and Sculpture by the Sea, see October.
09Compare
Sydney month by month
| Month | High | Low | Rain days | Sun h | Crowds | Verdict |
|---|---|---|---|---|---|---|
| January | 28 °C | 20 °C | 8 | – | very busy | Good |
| February | 28 °C | 20 °C | 10 | – | busy | Good |
| March | 26 °C | 19 °C | 11 | – | busy | Good |
| April | 24 °C | 16 °C | 9 | – | busy | Good |
| May | 21 °C | 12 °C | 6 | – | moderate | Excellent |
| June | 18 °C | 10 °C | 10 | – | moderate | Excellent |
| July | 19 °C | 9 °C | 8 | – | moderate | Excellent |
| August | 20 °C | 10 °C | 6 | – | quiet | Excellent |
| September | 22 °C | 12 °C | 7 | – | moderate | Excellent |
| October | 24 °C | 15 °C | 8 | – | busy | Excellent |
| November | 26 °C | 17 °C | 8 | – | busy | Excellent |
| December | 28 °C | 19 °C | 8 | – | very busy | Good |
Not sure about September? See the best time to visit Sydney.
10Elsewhere
September in nearby cities
| City | High | Rain days |
|---|---|---|
| Melbourne in September | 18 °C | 10 |
| Singapore in September | 32 °C | 11 |
| Bangkok in September | 33 °C | 24 |
| Tokyo in September | 28 °C | 12 |
| Kyoto in September | 30 °C | 10 |
| Shanghai in September | 30 °C | 12 |
11FAQ
Sydney in September: your questions
Is September a good time to visit Sydney?
September is one of the best months to visit Sydney. Daytime highs average 22 °C (72 °F), rain falls on about 7 days, and hotel arrivals run above the yearly average, so the main sights are moderate.
What is the weather like in Sydney in September?
Expect mild days around 22 °C (72 °F) and nights near 12 °C (54 °F). One September in ten brings afternoons above 29 °C, and one in ten stays below 17 °C.
Does it rain a lot in Sydney in September?
September brings about 57 mm (2.2 in) of rain over roughly 7 days, which is fairly dry by Sydney standards. On any given day the chance of at least 1 mm of rain is 22 percent.
What should I wear in Sydney in September?
Pack layers: t-shirt plus a light jacket for evenings, comfortable walking shoes, a compact umbrella for occasional showers.
Is Sydney crowded in September?
The main sights are moderate in September. Main drivers: spring blossoms; spring school holidays late month; Sydney Marathon.
What time does it get dark in Sydney in September?
Around the middle of September the sun sets at about 17:46 and rises at 05:54, giving 11.9 hours of daylight.