Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With September's arrival, Coolum Beach's weather records an average high-temperature of a still pleasant 22.6°C (72.7°F), marking little difference from August's 20.9°C (69.6°F). In September, Coolum Beach experiences a temperature dip to an average of 15.8°C (60.4°F) at night.Humidity
The average relative humidity in September is 70%.Rainfall
The month with the least rainfall in Coolum Beach is September, when the rain falls for 10 days and typically collects 17mm (0.67") of precipitation.Sea temperature
In Coolum Beach, Australia, 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 enjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing control becomes increasingly difficult.
Daylight
In September, the average length of the day in Coolum Beach is 11h and 56min.On the first day of September in Coolum Beach, sunrise is at 6:00 am and sunset at 5:35 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 is 8.7h.UV index
The months with the lowest UV index are April through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Undertake precautions - Guarding against sun damage is counselled. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Coolum Beach?
What is the average humidity in September in Coolum Beach?
What is the driest month in Coolum Beach?
How many days does it rain in September in Coolum Beach?
How cold is the water in September in Coolum Beach?
What is the average length of the day in September in Coolum Beach?
When are sunrise and sunset in September in Coolum Beach?
How many hours of sunshine does Coolum Beach have in September?
When is the lowest UV index in Coolum Beach?
What is the UV index reading in September in Coolum Beach?
Average temperature in September
Coolum Beach, Australia
- Average high temperature in September: 22.6°C
The warmest month (with the highest average high temperature) is January (27.3°C).
The month with the lowest average high temperature is July (19.5°C).
- Average low temperature in September: 15.8°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
Coolum Beach, Australia
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is January (1011.9mbar).
Average wind speed in September
Coolum Beach, Australia
- Average wind speed in September: 13.7km/h
The windiest month (with the highest average wind speed) is February (16.7km/h).
The calmest month (with the lowest average wind speed) is August (13.3km/h).
Average humidity in September
Coolum Beach, Australia
- Average humidity in September: 70%
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
Coolum Beach, Australia
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is March (80mm).
The driest month (with the least rainfall) is September (17mm).
Average rainfall days in September
Coolum Beach, Australia
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (9.8 days).
Average sea temperature in September
Coolum Beach, 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
Coolum Beach, Australia
- Average daylight in September: 11h and 5min
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 4min
The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in September
Coolum Beach, Australia
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is February (7.4 days).
Average UV index in September
Coolum Beach, 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
Coolum Beach, Australia
- Average cloud cover in September: 23
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Coolum Beach, 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).
Coolum Beach, Australia
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