September weather forecastCaloundra, Australia
September
Weather in September
The first month of the spring, September, is still a pleasant month in Caloundra, Australia, with an average temperature fluctuating between 16°C (60.8°F) and 22.5°C (72.5°F).Temperature
With the onset of September, a modest change to a still agreeable 22.5°C (72.5°F) from August's 20.6°C (69.1°F) is noted in high-temperature. During September, Caloundra experiences a consistent low-temperature average of 16°C (60.8°F).Humidity
The average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 16mm (0.63") of precipitation.Sea temperature
In Caloundra, the average seawater temperature in September is 21.9°C (71.4°F).Note: For most individuals, swimming in 21.9°C (71.4°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).
Daylight
The average length of the day in September is 11h and 56min.On the first day of September in Caloundra, sunrise is at 6:00 am and sunset at 5:34 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 5:47 pm AEST.
Sunshine
The average sunshine in September in Caloundra is 8.8h.UV index
April through September, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caloundra, Australia
- Average high temperature in September: 22.5°C
The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (19.2°C).
- Average low temperature in September: 16°C
The month with the highest average low temperature is February (22.6°C).
The coldest month (with the lowest average low temperature) is July (13.8°C).
Average pressure in September
Caloundra, Australia
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is January (1012mbar).
Average wind speed in September
Caloundra, Australia
- Average wind speed in September: 14.9km/h
The windiest month (with the highest average wind speed) is February (17.8km/h).
The calmest month (with the lowest average wind speed) is August (14.6km/h).
Average humidity in September
Caloundra, Australia
- Average humidity in September: 71%
The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Caloundra, Australia
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is February (81mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in September
Caloundra, Australia
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is September (9.5 days).
Average sea temperature in September
Caloundra, Australia
- Average sea temperature in September: 21.9°C
The best month for swimming (with the highest average sea temperature) is February (27.3°C).
The coldest month (with the lowest average sea temperature) is August (21.2°C).
Average daylight in September /
Average sunshine in September
Caloundra, Australia
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is November (Average sunshine: 10h and 48min).
The month with the least sunshine is June (Average sunshine: 6h and 6min).
Average sunshine days in September
Caloundra, Australia
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is August (18.3 days).
The months with the least sunshine days are February and March (6.8 days).
Average UV index in September
Caloundra, Australia
- Average UV index in September: 5
The months with the highest UV index are January, February, March, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August and September (UV index 5).
Average cloud cover in September
Caloundra, Australia
- Average cloud cover in September: 22
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Caloundra, 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).





