September weather forecastMonkey Mia, Australia
September
Weather in September
September in Monkey Mia marks the inception of spring, characterized by a subtle rise in temperature and a decrease in rainfall. In distinction to August, there’s more daylight and fewer clouds floating in the sky. The decrease in rainfall also results in dry and beautiful days, with a slight uptick in sunshine hours parameter. Consequently, outdoor activities become more inviting this month and adventure addicts can leverage the season to explore the stunning landscapes of Monkey Mia.Temperature
The advent of September presents an average high-temperature of a still pleasant 21.4°C (70.5°F), maintaining a close correlation with the preceding month. The nights of September cool down to an average low of 18.6°C (65.5°F), subtly lower than daytime highs.Humidity
The average relative humidity in September is 65%.Rainfall
In Monkey Mia, during September, the rain falls for 5 days and regularly aggregates up to 5mm (0.2") of precipitation. Throughout the year, there are 59.2 rainfall days, and 139mm (5.47") of precipitation is accumulated.Sea temperature
The months with the coldest seawater are August through November, with an average sea temperature of 22°C (71.6°F).Note: Taking into account a person's sensitivity to the cold, given sunshine, wind, and air temperature, swimming in 22°C (71.6°F) might be pleasant. (FYI: The water temperature set for the Olympic swimming event is between 25°C (77°F) and 28°C (82.4°F).)
Daylight
The average length of the day in September is 11h and 56min.On the first day of the month, sunrise is at 6:37 am and sunset at 6:13 pm. On the last day of September, sunrise is at 6:05 am and sunset at 6:24 pm AWST.
Sunshine
In September, the average sunshine is 9.5h.UV index
June through September, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Heed this! UV intensity is much stronger when reflected off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Monkey Mia, Australia
- Average high temperature in September: 21.4°C
The warmest month (with the highest average high temperature) is March (28.1°C).
The month with the lowest average high temperature is August (21°C).
- Average low temperature in September: 18.6°C
The month with the highest average low temperature is February (25.1°C).
The coldest month (with the lowest average low temperature) is August (18.3°C).
Average pressure in September
Monkey Mia, Australia
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1019.6mbar).
The month with the lowest atmospheric pressure is January (1007.4mbar).
Average wind speed in September
Monkey Mia, Australia
- Average wind speed in September: 27.4km/h
The windiest month (with the highest average wind speed) is December (33.1km/h).
The calmest month (with the lowest average wind speed) is July (23.9km/h).
Average humidity in September
Monkey Mia, Australia
- Average humidity in September: 65%
The months with the highest relative humidity are January, February and December (71%).
The month with the lowest relative humidity is May (59%).
Average rainfall in September
Monkey Mia, Australia
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is June (36mm).
The driest month (with the least rainfall) is November (3mm).
Average rainfall days in September
Monkey Mia, Australia
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is June (9.6 days).
The months with the least rainy days are February and November (2.5 days).
Average sea temperature in September
Monkey Mia, Australia
- Average sea temperature in September: 22°C
The best months for swimming (with the highest average sea temperature) are March and April (26°C).
The coldest months (with the lowest average sea temperature) are August, September, October and November (22°C).
Average daylight in September /
Average sunshine in September
Monkey Mia, Australia
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is December (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 6h and 42min).
Average sunshine days in September
Monkey Mia, Australia
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is March (27.4 days).
The month with the least sunshine days is June (19.4 days).
Average UV index in September
Monkey Mia, Australia
- Average UV index in September: 5
The months with the highest UV index are January, February and March (UV index 7).
The months with the lowest UV index are June, July, August and September (UV index 5).
Average cloud cover in September
Monkey Mia, Australia
- Average cloud cover in September: 14
The month with the most cloud cover is June (Cloud cover 23).
The months with the least cloud cover are October and December (Cloud cover 13).
Average visibility in September
Monkey Mia, 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).
