Thornlie Weather in September
In Thornlie, September brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.
Rainfall in Thornlie in September
Typically around 11 days of rainfall are expected, averaging 67 mm (2.6 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Thornlie in September
The temperature in Thornlie in September is perfect. Daytime highs reach 20°C (68°F), with nights dropping to 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Thornlie in September
The month enjoys around 230 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in Thornlie in September
Wind speeds average 6 m/s (12 knots) during September. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.
Average water temperature in September
The water is 17°C (63°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Thornlie.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Thornlie's climate page.
Thornlie Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Water Temperature
17°C (63°F) *
Chance of Rain
35%
Precipitation
67 mm (2.6 in)
Rainy days
11 days
Humidity
53% *
Windspeed
6 m/s (12 knots) *
Sunshine
230 hours *
Percentage Sunshine
*
Best Places in Australia in September
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Thornlie in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 17°C (63°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Thornlie in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Thornlie's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Thornlie climate overview or explore weather in Australia.
