Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The transition from August to September sees average high-temperatures adjusting to an enjoyable 16°C (60.8°F), from a not significantly different 14.2°C (57.6°F). Throughout September, Port Willunga's nights cool down to an average of 10.6°C (51.1°F).Humidity
In September, the average relative humidity is 69%.Rainfall
In Port Willunga, in September, during 12.8 rainfall days, 30mm (1.18") of precipitation is typically accumulated. Throughout the year, there are 138.9 rainfall days, and 363mm (14.29") of precipitation is accumulated.Sea temperature
In Port Willunga, in September, the average water temperature is 14.3°C (57.7°F).Note: Swimming in 14.3°C (57.7°F) poses a severe threat. Even short exposure to 13°C (55.4°F) is chilling, and going below 10°C (50°F) can cause breathing irregularities and intense cold shock, based on one's stamina.
Daylight
In September, the average length of the day is 11h and 52min.On the first day of September, sunrise is at 6:35 am and sunset at 5:57 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:18 pm ACST.
Sunshine
In September, the average sunshine is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Act with care - The need to guard against sun damage is communicated. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What is the average September temperature in Port Willunga?
What is the average humidity in September in Port Willunga?
How many days does it rain in September in Port Willunga?
What is the sea water temperature in September in Port Willunga?
How many hours of daylight does Port Willunga have in September?
When are sunrise and sunset in September in Port Willunga?
How many hours of sunshine does Port Willunga have in September?
How high is the UV index in September in Port Willunga?
Average temperature in September
Port Willunga, Australia
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is January (24.9°C).
The month with the lowest average high temperature is July (14°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is February (17.7°C).
The coldest month (with the lowest average low temperature) is August (9.9°C).
Average pressure in September
Port Willunga, Australia
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is June (1021.7mbar).
The month with the lowest atmospheric pressure is January (1012.5mbar).
Average wind speed in September
Port Willunga, Australia
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is August (17.7km/h).
The calmest month (with the lowest average wind speed) is April (13.8km/h).
Average humidity in September
Port Willunga, Australia
- Average humidity in September: 69%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Port Willunga, Australia
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is August (47mm).
The driest month (with the least rainfall) is January (17mm).
Average rainfall days in September
Port Willunga, Australia
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.3 days).
Average sea temperature in September
Port Willunga, Australia
- Average sea temperature in September: 14.3°C
The best month for swimming (with the highest average sea temperature) is February (20.7°C).
The coldest month (with the lowest average sea temperature) is August (13.8°C).
Average daylight in September /
Average sunshine in September
Port Willunga, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is December (Average sunshine: 10h and 0min).
The months with the least sunshine are May, July and August (Average sunshine: 7h and 0min).
Average sunshine days in September
Port Willunga, Australia
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Port Willunga, Australia
- Average UV index in September: 4
The months with the highest UV index are January and December (UV index 6).
The month with the lowest UV index is July (UV index 3).
Average cloud cover in September
Port Willunga, Australia
- Average cloud cover in September: 34
The months with the most cloud cover are May and July (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in September
Port Willunga, Australia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Port Willunga, Australia
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