September weather forecast
Blackheath, Australia

Weather in September

September, the first month of the spring, in Blackheath, is a comfortable month, with average temperature varying between 18.5°C (65.3°F) and 6.2°C (43.2°F).

Temperature

In September, the average high-temperature marginally rises, from a mild 15.2°C (59.4°F) in August, to a comfortable 18.5°C (65.3°F). The average low-temperature, in September, is 6.2°C (43.2°F).

Humidity

The average relative humidity in September is 70%.

Rainfall

In Blackheath, in September, during 10.7 rainfall days, 32mm (1.26") of precipitation is typically accumulated. In Blackheath, Australia, during the entire year, the rain falls for 157.9 days and collects up to 569mm (22.4") of precipitation.

Daylight

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

Sunshine

In September, the average sunshine in Blackheath is 8.8h.

UV index

In Blackheath, Australia, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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.
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FAQ

What is the average humidity in September in Blackheath?

The average relative humidity in September is 70%.

How much does it rain in Blackheath in September?

In Blackheath, in September, during 10.7 rainfall days, 32mm (1.26") of precipitation is typically accumulated.

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

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

How long on average sun shines in September in Blackheath?

In September, the average sunshine in Blackheath, Australia, is 8.8h.

What is the UV index reading in September in Blackheath?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Blackheath, Australia

Average temperature in September - Blackheath, Australia
  • Average high temperature in September: 18.5°C

The warmest month (with the highest average high temperature) is January (28.6°C).
The months with the lowest average high temperature are June and July (13.7°C).

  • Average low temperature in September: 6.2°C

The month with the highest average low temperature is January (15.4°C).
The coldest month (with the lowest average low temperature) is July (3.3°C).

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Average pressure in September
Blackheath, Australia

Average pressure in September - Blackheath, Australia
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is June (1021.6mbar).
The month with the lowest atmospheric pressure is January (1012.7mbar).

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Average wind speed in September
Blackheath, Australia

Average wind speed in September - Blackheath, Australia
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is August (8.6km/h).
The calmest months (with the lowest average wind speed) are March and April (6.3km/h).

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Average humidity in September
Blackheath, Australia

Average humidity in September - Blackheath, Australia
  • Average humidity in September: 70%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (68%).

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Average rainfall in September
Blackheath, Australia

Average rainfall in September - Blackheath, Australia
  • Average rainfall in September: 32mm

The wettest month (with the highest rainfall) is February (109mm).
The driest month (with the least rainfall) is May (22mm).

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Average rainfall days in September
Blackheath, Australia

Average rainfall days in September - Blackheath, Australia
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is March (17.7 days).
The months with the least rainy days are July and August (8.9 days).

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Average daylight in September /
Average sunshine in September
Blackheath, Australia

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

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

  • Average sunshine in September: 8.8h

The months with the most sunshine are November and December (Average sunshine: 10.1h).
The month with the least sunshine is June (Average sunshine: 5.8h).

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Average sunshine days in September
Blackheath, Australia

Average sunshine days in September - Blackheath, Australia
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is May (19 days).
The month with the least sunshine days is February (8.9 days).

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Average UV index in September
Blackheath, Australia

Average UV index in September - Blackheath, Australia
  • Average UV index in September: 4

The months with the highest UV index are January and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 3).

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Average cloud cover in September
Blackheath, Australia

Average cloud cover in September - Blackheath, Australia
  • Average cloud cover in September: 30

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in September
Blackheath, Australia

Average visibility in September - Blackheath, Australia
  • Average visibility in September: 8km

The months with the highest visibility are January, February, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are March and April (7km).

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