Bellevue Hill
Australia
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Bellevue Hill, Australia

September, the first month of the spring, in Bellevue Hill, is an agreeable month, with average temperature ranging between max 20.2°C (68.4°F) and min 12.8°C (55°F).

Temperature

In September, the average high-temperature is relatively the same as in August - an agreeable 20.2°C (68.4°F). In Bellevue Hill, in September, the average low-temperature is 12.8°C (55°F).

Humidity

The average relative humidity in September is 66%.

Rainfall

In September, in Bellevue Hill, the rain falls for 9.6 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Bellevue Hill, during the entire year, the rain falls for 166.6 days and collects up to 653mm (25.71") of precipitation.

Sea temperature

With an average sea temperature of 18.6°C (65.5°F), September is the month with the coldest seawater.
Note: For most, swimming in 18.6°C (65.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In September, the average length of the day in Bellevue Hill, Australia, is 11.9h.

Sunshine

In Bellevue Hill, Australia, the average sunshine is 8.8h.

UV index

Months with the lowest UV index are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 4 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Bellevue Hill?

The average high-temperature, in September, is 20.2°C (68.4°F), while the average low-temperature is 12.8°C (55°F).

What is the average humidity in September in Bellevue Hill?

In Bellevue Hill, Australia, the average relative humidity in September is 66%.

How many days does it rain in September in Bellevue Hill?

In Bellevue Hill, Australia, in September, it is raining for 9.6 days, with typically 33mm (1.3") of accumulated precipitation.

What is the month with the coldest sea water in Bellevue Hill?

With an average sea temperature of 18.6°C (65.5°F), September is the month with the coldest seawater in Bellevue Hill, Australia.

What is the sea temperature in September in Bellevue Hill?

In Bellevue Hill, Australia, in September, the average water temperature is 18.6°C (65.5°F). For most, swimming in 18.6°C (65.5°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in September in Bellevue Hill?

The average length of the day in September in Bellevue Hill, Australia, is 11.9h.

How long on average sun shines in September in Bellevue Hill?

In September, the average sunshine is 8.8h.

What is the month with the lowest UV index in Bellevue Hill?

May through September, with an average maximum UV index of 4, are months with the lowest UV index in Bellevue Hill, Australia.

How high is the UV index in September in Bellevue Hill?

In Bellevue Hill, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Bellevue Hill, Australia
  • Average high temperature in September: 20.2°C

The warmest month (with the highest average high temperature) is January (26.8°C).
The month with the lowest average high temperature is July (16.6°C).

  • Average low temperature in September: 12.8°C

The month with the highest average low temperature is January (20.2°C).
The coldest month (with the lowest average low temperature) is July (10.3°C).

Average humidity in September - Bellevue Hill, Australia
  • Average humidity in September: 66%

The month with the highest relative humidity is February (75%).
The month with the lowest relative humidity is August (65%).

Average rainfall in September - Bellevue Hill, Australia
  • Average rainfall in September: 33mm

The wettest month (with the highest rainfall) is February (93mm).
The driest month (with the lowest rainfall) is July (31mm).

Average rainfall days in September - Bellevue Hill, Australia
  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is March (19 days).
The month with the lowest number of rainy days is August (9.2 days).

Average sea temperature in September - Bellevue Hill, Australia
  • Average sea temperature in September: 18.6°C

The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).

Average daylight in September / Average sunshine in September - Bellevue Hill, Australia
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.4h).
The month with shortest days is June (Average daylight: 9.9h).

  • Average sunshine in September: 8.8h

The month with most sunshine is November (Average sunshine: 9.8h).
The month with least sunshine is June (Average sunshine: 5.9h).

Average UV index in September - Bellevue Hill, Australia
  • Average UV index in September: 4

Months with the highest UV index are January, February, November and December (UV index 6).
Months with the lowest UV index are May, June, July, August and September (UV index 4).