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
September
Weather in September
Temperature
Mandurah transitions into September recording an average high-temperature of a still enjoyable 17.3°C (63.1°F), closely aligning with the preceding month's temperature. Mandurah records an average low-temperature of 11.8°C (53.2°F) throughout the month of September.Humidity
In September, the average relative humidity is 73%.Rainfall
In Mandurah, in September, it is raining for 13.8 days, with typically 43mm (1.69") of accumulated precipitation. Throughout the year, there are 115 rainfall days, and 411mm (16.18") of precipitation is accumulated.Sea temperature
September is the month with the coldest seawater in Mandurah, with an average sea temperature of 18.3°C (64.9°F).Note: For the majority of people, swimming in water at 18.3°C (64.9°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 11h and 53min.On the first day of September in Mandurah, sunrise is at 6:33 am and sunset at 6:00 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 6:18 pm AWST.
Sunshine
The average sunshine in September is 8h.UV index
June through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 4 in September transforms into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Mandurah?
What is the average humidity in September in Mandurah?
How much does it rain in Mandurah in September?
What is the month with the coldest sea water in Mandurah?
What is the sea water temperature in September in Mandurah?
How many hours of daylight does Mandurah have in September?
What time are sunrise and sunset in September in Mandurah?
How long on average sun shines in September in Mandurah?
What is the month with the lowest UV index in Mandurah?
How high is the UV index in September in Mandurah?
Average temperature in September
Mandurah, Australia
- Average high temperature in September: 17.3°C
The warmest month (with the highest average high temperature) is February (27.2°C).
The month with the lowest average high temperature is July (16.4°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is February (19°C).
The coldest months (with the lowest average low temperature) are August and September (11.8°C).
Average pressure in September
Mandurah, Australia
- Average pressure in September: 1018.9mbar
The month with the highest atmospheric pressure is July (1020.3mbar).
The month with the lowest atmospheric pressure is January (1012mbar).
Average wind speed in September
Mandurah, Australia
- Average wind speed in September: 18.7km/h
The windiest month (with the highest average wind speed) is January (20.1km/h).
The calmest month (with the lowest average wind speed) is April (16.7km/h).
Average humidity in September
Mandurah, Australia
- Average humidity in September: 73%
The months with the highest relative humidity are July and August (74%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Mandurah, Australia
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is June (79mm).
The driest month (with the least rainfall) is December (7mm).
Average rainfall days in September
Mandurah, Australia
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (3.3 days).
Average sea temperature in September
Mandurah, Australia
- Average sea temperature in September: 18.3°C
The best month for swimming (with the highest average sea temperature) is March (22.8°C).
The coldest month (with the lowest average sea temperature) is September (18.3°C).
Average daylight in September /
Average sunshine in September
Mandurah, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is January (Average sunshine: 11h and 30min).
The month with the least sunshine is August (Average sunshine: 5h and 36min).
Average sunshine days in September
Mandurah, Australia
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is December (25.4 days).
The month with the least sunshine days is August (10.7 days).
Average UV index in September
Mandurah, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are June, July, August and September (UV index 4).
Average cloud cover in September
Mandurah, Australia
- Average cloud cover in September: 34
The month with the most cloud cover is July (Cloud cover 40).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in September
Mandurah, 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).
