September weather forecastMelbourne, Australia
September
Weather in September
September rings in Spring in Melbourne with a warming trend that sees temperatures elevate to 16°C (60.8°F). The city begins to feel the seasonal shift, with longer hours of daylight and increased sunshine duration. Currents of slightly warmer sea waters start to return the ocean to more swimmable temperatures, and the wind maintains steady speeds, averaging around 13.3 Kph. September represents a break from the chilling winter, painting the city with the warmth and colors of Spring.Temperature
The arrival of September brings an average high-temperature of an enjoyable 16°C (60.8°F), subtly diverging from August's 13.4°C (56.1°F). During the nights in September, Melbourne experiences a consistent average temperature of 7.4°C (45.3°F).Humidity
In Melbourne, Australia, the average relative humidity in September is 74%.Rainfall
In Melbourne, Australia, during September, the rain falls for 16.2 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, there are 163.4 rainfall days, and 465mm (18.31") of precipitation is accumulated.Sea temperature
With an average sea temperature of 14.7°C (58.5°F), September is the month with the coldest seawater.Note: Swimming in 14.7°C (58.5°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In September, the average length of the day in Melbourne is 11h and 51min.On the first day of the month, sunrise is at 6:41 am and sunset at 5:59 pm. On the last day of September, in Melbourne, sunrise is at 5:56 am and sunset at 6:23 pm AEST.
Sunshine
The average sunshine in September in Melbourne is 7.4h.UV index
May through September, with an average maximum UV index of 3, are months with the lowest UV index in Melbourne. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 3 transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Melbourne, Australia
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is January (25.8°C).
The month with the lowest average high temperature is July (12.4°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is February (14.8°C).
The coldest month (with the lowest average low temperature) is August (6.6°C).
Average pressure in September
Melbourne, Australia
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is June (1021.4mbar).
The month with the lowest atmospheric pressure is January (1012.3mbar).
Average wind speed in September
Melbourne, Australia
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is August (13.9km/h).
The calmest month (with the lowest average wind speed) is April (10.6km/h).
Average humidity in September
Melbourne, Australia
- Average humidity in September: 74%
The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is January (63%).
Average rainfall in September
Melbourne, Australia
- Average rainfall in September: 39mm
The wettest months (with the highest rainfall) are August and December (45mm).
The driest months (with the least rainfall) are March and April (34mm).
Average rainfall days in September
Melbourne, Australia
- Average rainfall days in September: 16.2 days
The months with the highest number of rainy days are July and August (16.9 days).
The month with the least rainy days is January (9.5 days).
Average sea temperature in September
Melbourne, Australia
- Average sea temperature in September: 14.7°C
The best month for swimming (with the highest average sea temperature) is February (18.8°C).
The coldest month (with the lowest average sea temperature) is September (14.7°C).
Average daylight in September /
Average sunshine in September
Melbourne, Australia
- Average daylight in September: 11h and 48min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is December (Average sunshine: 9h and 48min).
The months with the least sunshine are July and August (Average sunshine: 6h and 30min).
Average sunshine days in September
Melbourne, Australia
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is January (16.7 days).
The months with the least sunshine days are July and August (10.5 days).
Average UV index in September
Melbourne, Australia
- Average UV index in September: 3
The months with the highest UV index are January, February, March, October, November and December (UV index 5).
The months with the lowest UV index are May, June, July, August and September (UV index 3).
Average cloud cover in September
Melbourne, Australia
- Average cloud cover in September: 43
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in September
Melbourne, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February and March (10km).
The months with the lowest visibility are April, May, June, July, August, September, October, November and December (9km).
