Melbourne
Australia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Melbourne, Australia

The first month of the spring, September, is a comfortable month in Melbourne, Australia, with temperature in the range of an average low of 7.4°C (45.3°F) and an average high of 16°C (60.8°F).

Temperature

In September, the average high-temperature is almost the same as in August - an enjoyable 16°C (60.8°F). In Melbourne, in September, the average low-temperature is 7.4°C (45.3°F).

Humidity

In Melbourne, the average relative humidity is 74%.

Rainfall

In Melbourne, in September, during 16.2 rainfall days, 39mm (1.54") of precipitation is typically accumulated. 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 in Melbourne.
Note: Swimming in 14.7°C (58.5°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in Melbourne is 11.9h.

Sunshine

In September, the average sunshine in Melbourne is 7.4h.

UV index

Months with the lowest UV index are May through September, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in September in Melbourne?

In Melbourne, Australia, in September, the average high-temperature is 16°C (60.8°F), and the average low-temperature is 7.4°C (45.3°F).

What is the average humidity in September in Melbourne?

In Melbourne, Australia, the average relative humidity in September is 74%.

How many days does it rain in September in Melbourne?

In Melbourne, in September, it is raining for 16.2 days, with typically 39mm (1.54") of accumulated precipitation.

What is the month with the coldest sea water in Melbourne?

The month with the coldest seawater is September, with an average sea temperature of 14.7°C (58.5°F).

How cold is the water in September in Melbourne?

In September, the average sea temperature is 14.7°C (58.5°F). 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.

What is the average length of the day in September in Melbourne?

In Melbourne, the average length of the day in September is 11.9h.

How long on average sun shines in September in Melbourne?

The average sunshine in September is 7.4h.

What is the month with the lowest UV index in Melbourne?

May through September, with an average maximum UV index of 3, are months with the lowest UV index in Melbourne, Australia.

What is the UV index reading in September in Melbourne?

The average daily maximum UV index in September in Melbourne, Australia, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
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 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

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: 11.9h

The month with the longest days is December (Average daylight: 14.7h).
The month with the shortest days is June (Average daylight: 9.6h).

  • Average sunshine in September: 7.4h

The month with the most sunshine is December (Average sunshine: 9.8h).
Months with the least sunshine are July and August (Average sunshine: 6.5).

Average UV index in September - Melbourne, Australia
  • Average UV index in September: 3

Months with the highest UV index are January, February, March, October, November and December (UV index 5).
Months with the lowest UV index are May, June, July, August and September (UV index 3).