September weather forecast
Umina, Australia

September

Weather in September

The first month of the spring, September, is a pleasant month in Umina, Australia, with temperature in the range of an average low of 12.3°C (54.1°F) and an average high of 20.3°C (68.5°F).

Temperature

Umina notes an average high-temperature of a pleasant 20.3°C (68.5°F) in September, displaying minor variation from August. Umina's nights in September experience an average temperature drop to a fresh 12.3°C (54.1°F).

Humidity

In Umina, the average relative humidity in September is 68%.

Rainfall

In Umina, in September, it is raining for 9.9 days, with typically 43mm (1.69") of accumulated precipitation. In Umina, during the entire year, the rain falls for 156.9 days and collects up to 628mm (24.72") of precipitation.

Daylight

In September, the average length of the day is 11h and 53min.
On the first day of the month, sunrise is at 6:12 am and sunset at 5:37 pm. On the last day of September, sunrise is at 5:32 am and sunset at 5:56 pm AEST.

Sunshine

The average sunshine in September in Umina is 8.9h.

UV index

The months with the lowest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 4 in September translates into these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun.

Frequently asked questions

What is the usual temperature for Umina in September?
The high-temperature, in September, in Umina, is 20.3°C (68.5°F), while the low-temperature averages to 12.3°C (54.1°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in January is estimated at 29°C (84.2°F).
What is the average humidity in September?
In September, the average relative humidity is 68%.
How many days does it rain in September?
In Umina, during September, the rain falls for 9.9 days and regularly aggregates up to 43mm (1.69") of precipitation.
How many hours of daylight does Umina have in September?
The average day length in September is 11h and 53min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 6:12 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 5:56 pm AEST.
How long on average sun shines in September?
The average sunshine duration in September is 8.9h.
What is the month with the lowest UV index in Umina?
The months with the lowest UV index are May through September, with an average maximum UV index of 4.
What is the UV index intensity in September?
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Umina, Australia
Average temperature in September
Umina, Australia
  • Average high temperature in September: 20.3°C

The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (16.5°C).

  • Average low temperature in September: 12.3°C

The month with the highest average low temperature is January (19.8°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).

Average pressure in September - Umina, Australia
Average pressure in September
Umina, Australia
  • Average pressure in September: 1017.3mbar

The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).

Average wind speed in September - Umina, Australia
Average wind speed in September
Umina, Australia
  • Average wind speed in September: 13.5km/h

The windiest month (with the highest average wind speed) is August (13.6km/h).
The calmest month (with the lowest average wind speed) is April (12km/h).

Average humidity in September - Umina, Australia
Average humidity in September
Umina, Australia
  • Average humidity in September: 68%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).

Average rainfall in September - Umina, Australia
Average rainfall in September
Umina, Australia
  • Average rainfall in September: 43mm

The wettest month (with the highest rainfall) is February (100mm).
The driest month (with the least rainfall) is August (34mm).

Average rainfall days in September - Umina, Australia
Average rainfall days in September
Umina, Australia
  • Average rainfall days in September: 9.9 days

The month with the highest number of rainy days is March (16.5 days).
The month with the least rainy days is August (9.2 days).

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

The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).

Average sunshine days in September - Umina, Australia
Average sunshine days in September
Umina, Australia
  • Average sunshine days in September: 18 days

The month with the most sunshine days is August (20 days).
The month with the least sunshine days is February (10.6 days).

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

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

Average cloud cover in September - Umina, Australia
Average cloud cover in September
Umina, Australia
  • Average cloud cover in September: 25

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in September - Umina, Australia
Average visibility in September
Umina, Australia
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).

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