AustraliaAverage weather for Sydney in September
It's pleasantly warm in September in Sydney with an average temperature of 22°C. Temperatures this month range from a low of 19°C to a high of 25°C. At night, you can expect temperatures between 11°C and 15°C.
Start of September
The month of September starts in Sydney with warm temps, averaging around 22°C during the day and nights around 12°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid September
By mid-September, daytime temps rise to around 23°C, with nights around 13°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Sydney is around 22°C, while nighttime temps are about 13°C. A shower might pop up, but overall, the weather will be dry and sunny.
Water temperature
The water temperature at Sydney is 20°C this month. Refreshing if you feel like a swim.
In September, there is an average of 58 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the South.
Sydney in September |
New York | ||
|---|---|---|---|
 Average temperature |
22°C | 27°C | |
 Max. temperature |
25°C | 31°C | |
| Min. temperature |
19°C | -5°C | |
 Total precipitation |
58 mm | 57 mm | |
| Rainy days |
6 days | 9 days | |
August
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Sydney?
Looking for great weather? September is a good time to be in Sydney. The temperatures are nice, and there’s not too much rain.
Temperature records
With 35°C in 2023, Sydney reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 14°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 7°C to a highest value of 20°C.
Check out the climate of Sydney for all months and discover the best travel time
Curious about the weather in other parts of Australia? Check out the climate and weather for spots like Gold Coast, Melbourne, Cairns, or explore other destinations in Australia.
Daily Temperature in September in Sydney
This chart shows the average daily high and low temperatures in September for Sydney, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Sydney
The chart below shows the average daily precipitation in September for Sydney, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 6 days of precipitation in Sydney.
Daily UV index in September in Sydney
This chart shows the average daily UV index in September in Sydney, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Sydney over the years
This chart shows the average temperature in September in Sydney, measured in degrees Celsius, over the past few years.
Total precipitation in September in Sydney over the years
This chart shows the average precipitation in September in Sydney, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Sydney
Click on any day in September to get detailed info about the usual weather on that day in Sydney. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Sydney
Have you been to Sydney in September?
Share your weather experience in September in Sydney.
Average weather in Sydney by month
Click on a month below to see detailed weather info for Sydney. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
