Click on a day for an hourly weather forecast
The temperatures in Coolum Beach in September are comfortable with low of 16°C and and high up to 23°C.
You can expect a few rainy days in Coolum Beach during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Coolum Beach in September 2025.
If you’re planning to visit Coolum Beach in the near future, we highly recommend that you review the 14 day weather forecast for Coolum Beach before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 22° | 6 | 25 | 0 | 173 mm | Perfect | Coolum Beach in January |
| February | 27° / 22° | 6 | 22 | 0 | 162 mm | Perfect | Coolum Beach in February |
| March | 26° / 22° | 6 | 25 | 0 | 164 mm | Perfect | Coolum Beach in March |
| April | 24° / 19° | 4 | 26 | 0 | 130 mm | Perfect | Coolum Beach in April |
| May | 22° / 17° | 3 | 28 | 0 | 103 mm | Good | Coolum Beach in May |
| June | 20° / 14° | 4 | 26 | 0 | 84 mm | Good | Coolum Beach in June |
| July | 20° / 13° | 2 | 29 | 0 | 59 mm | Good | Coolum Beach in July |
| August | 21° / 14° | 2 | 30 | 0 | 52 mm | Good | Coolum Beach in August |
| September | 23° / 16° | 2 | 28 | 0 | 50 mm | Perfect | Coolum Beach in September |
| October | 24° / 17° | 4 | 27 | 0 | 85 mm | Perfect | Coolum Beach in October |
| November | 26° / 19° | 3 | 27 | 0 | 66 mm | Perfect | Coolum Beach in November |
| December | 27° / 21° | 5 | 26 | 0 | 135 mm | Perfect | Coolum Beach in December |