September weather forecastAltona, Australia
September
Weather in September
September, the first month of the spring in Altona, is still a mild month, with temperature in the range of an average high of 15.8°C (60.4°F) and an average low of 7.5°C (45.5°F).Temperature
Altona records an average high-temperature of a still mild 15.8°C (60.4°F) as September arrives, nearly mirroring the previous month's climate. Altona experiences a mean low-temperature of 7.5°C (45.5°F) during September.Humidity
In September, the average relative humidity in Altona is 74%.Rainfall
In Altona, in September, it is raining for 15.1 days, with typically 35mm (1.38") of accumulated precipitation. In Altona, Australia, during the entire year, the rain falls for 157.6 days and collects up to 415mm (16.34") of precipitation.Daylight
In September, the average length of the day is 11h and 51min.On the first day of the month, sunrise is at 6:41 am and sunset at 5:59 pm. On the last day of September, sunrise is at 5:57 am and sunset at 6:24 pm AEST.
Sunshine
In September, the average sunshine is 7.6h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Be vigilant - Preventing sunburn is recommended. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altona, Australia
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is January (25.1°C).
The month with the lowest average high temperature is July (12.8°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is February (15.2°C).
The coldest month (with the lowest average low temperature) is August (6.8°C).
Average pressure in September
Altona, Australia
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is June (1021.3mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in September
Altona, Australia
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is August (15km/h).
The calmest month (with the lowest average wind speed) is April (11.3km/h).
Average humidity in September
Altona, 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 (64%).
Average rainfall in September
Altona, Australia
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (41mm).
The driest month (with the least rainfall) is March (27mm).
Average rainfall days in September
Altona, Australia
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is August (16.6 days).
The month with the least rainy days is January (8.9 days).
Average daylight in September /
Average sunshine in September
Altona, Australia
- Average daylight in September: 11h and 48min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 36min).
Average sunshine days in September
Altona, Australia
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in September
Altona, Australia
- Average UV index in September: 4
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are May, June, July and August (UV index 3).
Average cloud cover in September
Altona, Australia
- Average cloud cover in September: 41
The months with the most cloud cover are May and August (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in September
Altona, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (9km).
