September weather forecastWhyalla, Australia
September
Weather in September
September, the first month of the spring in Whyalla, is a pleasant month, with temperature in the range of an average low of 11.5°C (52.7°F) and an average high of 20.1°C (68.2°F).Temperature
September's presence marks an average high-temperature of an agreeable 20.1°C (68.2°F), subtly varied from August's 17.3°C (63.1°F). Whyalla experiences a steady low-temperature of 11.5°C (52.7°F) throughout September.Humidity
The average relative humidity in September in Whyalla is 58%.Rainfall
In Whyalla, in September, during 6.8 rainfall days, 14mm (0.55") of precipitation is typically accumulated. Throughout the year, in Whyalla, there are 83.5 rainfall days, and 201mm (7.91") of precipitation is accumulated.Daylight
The average length of the day in September in Whyalla is 11h and 53min.On the first day of the month, sunrise is at 6:36 am and sunset at 6:02 pm. On the last day of September, in Whyalla, sunrise is at 5:57 am and sunset at 6:21 pm ACST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Whyalla, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Whyalla, Australia
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is January (29.6°C).
The months with the lowest average high temperature are June and July (16.5°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is January (20.5°C).
The coldest month (with the lowest average low temperature) is July (10.1°C).
Average pressure in September
Whyalla, Australia
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is June (1022.7mbar).
The month with the lowest atmospheric pressure is January (1011.6mbar).
Average wind speed in September
Whyalla, Australia
- Average wind speed in September: 19.4km/h
The windiest month (with the highest average wind speed) is January (21.6km/h).
The calmest month (with the lowest average wind speed) is April (16.4km/h).
Average humidity in September
Whyalla, Australia
- Average humidity in September: 58%
The month with the highest relative humidity is June (65%).
The months with the lowest relative humidity are January and December (50%).
Average rainfall in September
Whyalla, Australia
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is November (22mm).
The driest months (with the least rainfall) are March and July (12mm).
Average rainfall days in September
Whyalla, Australia
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is August (8.9 days).
The month with the least rainy days is February (4.8 days).
Average daylight in September /
Average sunshine in September
Whyalla, Australia
- Average daylight in September: 11h and 54min
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 30min
The month with the most sunshine is January (Average sunshine: 9h and 12min).
The months with the least sunshine are May and August (Average sunshine: 7h and 42min).
Average sunshine days in September
Whyalla, Australia
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is August (19 days).
Average UV index in September
Whyalla, Australia
- Average UV index in September: 5
The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June, July and August (UV index 4).
Average cloud cover in September
Whyalla, Australia
- Average cloud cover in September: 25
The month with the most cloud cover is June (Cloud cover 33).
The month with the least cloud cover is January (Cloud cover 17).
Average visibility in September
Whyalla, 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).
