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
With the onset of September, a modest change to a comfortable 16.4°C (61.5°F) from August's 14.5°C (58.1°F) is noted in high-temperature. An average nighttime temperature of 9.9°C (49.8°F) is recorded during September.Humidity
In September, the average relative humidity in Seacliff is 69%.Rainfall
In Seacliff, in September, it is raining for 11.8 days, with typically 25mm (0.98") of accumulated precipitation. In Seacliff, during the entire year, the rain falls for 126.2 days and collects up to 326mm (12.83") of precipitation.Sea temperature
In Seacliff, Australia, the average seawater temperature in September is 14.4°C (57.9°F).Note: To swim in 14.4°C (57.9°F) at less than 10°C (50°F), ensure you're well-protected. Without it, be prepared for a sudden jolt of cold and breathing issues. Remember, even 13°C (55.4°F) is not welcoming.
Daylight
In September, the average length of the day is 11h and 52min.On the first day of September, sunrise is at 6:34 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 Seacliff, the average sunshine in September is 8h.UV index
In Seacliff, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Seacliff?
What is the average humidity in September in Seacliff?
How much does it rain in Seacliff in September?
What is the sea water temperature in September in Seacliff?
What is the average length of the day in September in Seacliff?
When is the sunrise / sunset in September in Seacliff?
How many hours of sunshine does Seacliff have in September?
What is the UV index intensity in September in Seacliff?
Average temperature in September
Seacliff, Australia
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is January (26.3°C).
The month with the lowest average high temperature is July (13.9°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is August (9.1°C).
Average pressure in September
Seacliff, Australia
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is June (1021.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in September
Seacliff, Australia
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is April (12.9km/h).
Average humidity in September
Seacliff, Australia
- Average humidity in September: 69%
The months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (58%).
Average rainfall in September
Seacliff, Australia
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is March (16mm).
Average rainfall days in September
Seacliff, Australia
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (6.2 days).
Average sea temperature in September
Seacliff, Australia
- Average sea temperature in September: 14.4°C
The best month for swimming (with the highest average sea temperature) is January (20.3°C).
The coldest month (with the lowest average sea temperature) is August (13.8°C).
Average daylight in September /
Average sunshine in September
Seacliff, 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: 8h and 0min
The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is August (Average sunshine: 7h and 6min).
Average sunshine days in September
Seacliff, Australia
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in September
Seacliff, Australia
- Average UV index in September: 4
The months with the highest UV index are February and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in September
Seacliff, Australia
- Average cloud cover in September: 33
The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in September
Seacliff, 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).
Seacliff, Australia
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