September weather forecast
Happy Valley, Australia

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Weather in September

The first month of the spring, September, is a comfortable month in Happy Valley, Australia, with an average temperature varying between 16°C (60.8°F) and 10.6°C (51.1°F).

Temperature

September ushers in an average high-temperature of a still refreshing 16°C (60.8°F), aligning closely with the preceding month. Nighttime temperatures consistently average a cool 10.6°C (51.1°F) during September.

Humidity

The average relative humidity in September is 69%.

Rainfall

In September, in Happy Valley, the rain falls for 12.8 days. Throughout September, 30mm (1.18") of precipitation is accumulated. Throughout the year, there are 138.9 rainfall days, and 363mm (14.29") of precipitation is accumulated.

Daylight

The average length of the day in September is 11h and 52min.
On the first day of September, sunrise is at 6:34 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:18 pm ACST.

Sunshine

The average sunshine in September in Happy Valley, Australia, is 7.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What are the temperatures in Happy Valley in September?

During September, Happy Valley experiences an average high-temperature of 16°C (60.8°F) and a low-temperature of 10.6°C (51.1°F).

What is the average humidity in September in Happy Valley?

In Happy Valley, the average relative humidity in September is 69%.

How many days does it rain in September in Happy Valley?

In Happy Valley, in September, it is raining for 12.8 days, with typically 30mm (1.18") of accumulated precipitation.

What is the average length of the day in September in Happy Valley?

The average day length in September in Happy Valley, Australia, is 11h and 52min.

When is the sunrise / sunset in September in Happy Valley?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:18 pm ACST.

How long on average sun shines in September in Happy Valley?

In September, the average sunshine duration is 7.9h.

What is the UV index intensity in September in Happy Valley?

In Happy Valley, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.

Average temperature in September
Happy Valley, Australia

Average temperature in September - Happy Valley, Australia
  • Average high temperature in September: 16°C

The warmest month (with the highest average high temperature) is January (24.9°C).
The month with the lowest average high temperature is July (14°C).

  • Average low temperature in September: 10.6°C

The month with the highest average low temperature is February (17.7°C).
The coldest month (with the lowest average low temperature) is August (9.9°C).

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Average pressure in September
Happy Valley, Australia

Average pressure in September - Happy Valley, Australia
  • Average pressure in September: 1017.4mbar

The month with the highest atmospheric pressure is June (1021.7mbar).
The month with the lowest atmospheric pressure is January (1012.5mbar).

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Average wind speed in September
Happy Valley, Australia

Average wind speed in September - Happy Valley, Australia
  • Average wind speed in September: 16.7km/h

The windiest month (with the highest average wind speed) is August (17.7km/h).
The calmest month (with the lowest average wind speed) is April (13.8km/h).

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Average humidity in September
Happy Valley, Australia

Average humidity in September - Happy Valley, Australia
  • Average humidity in September: 69%

The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (61%).

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Average rainfall in September
Happy Valley, Australia

Average rainfall in September - Happy Valley, Australia
  • Average rainfall in September: 30mm

The wettest month (with the highest rainfall) is August (47mm).
The driest month (with the least rainfall) is January (17mm).

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Average rainfall days in September
Happy Valley, Australia

Average rainfall days in September - Happy Valley, Australia
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.3 days).

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Average daylight in September /
Average sunshine in September
Happy Valley, Australia

Average daylight in September / Average sunshine in September - Happy Valley, Australia
  • Average daylight in September: 11h and 5min

The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is December (Average sunshine: 10h and 0min).
The months with the least sunshine are May, July and August (Average sunshine: 7h and 0min).

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Average sunshine days in September
Happy Valley, Australia

Average sunshine days in September - Happy Valley, Australia
  • Average sunshine days in September: 13.1 days

The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is August (10.8 days).

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Average UV index in September
Happy Valley, Australia

Average UV index in September - Happy Valley, Australia
  • Average UV index in September: 4

The months with the highest UV index are January and December (UV index 6).
The month with the lowest UV index is July (UV index 3).

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Average cloud cover in September
Happy Valley, Australia

Average cloud cover in September - Happy Valley, Australia
  • Average cloud cover in September: 34

The months with the most cloud cover are May and July (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 20).

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Average visibility in September
Happy Valley, Australia

Average visibility in September - Happy Valley, 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).

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Happy Valley, Australia

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