Click on a day for an hourly weather forecast
The temperatures in Wollongong in September are usually low and can range between 12°C and 19°C.
You can expect about 3 to 8 days of rain in Wollongong during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Wollongong in September 2025.
If you’re planning to visit Wollongong in the near future, we highly recommend that you review the 14 day weather forecast for Wollongong before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 26° / 19° | 5 | 26 | 0 | 125 mm | Perfect | Wollongong in January |
| February | 25° / 19° | 6 | 23 | 0 | 168 mm | Perfect | Wollongong in February |
| March | 24° / 18° | 5 | 26 | 0 | 171 mm | Perfect | Wollongong in March |
| April | 22° / 16° | 4 | 26 | 0 | 102 mm | Good | Wollongong in April |
| May | 19° / 13° | 3 | 28 | 0 | 72 mm | Good | Wollongong in May |
| June | 16° / 11° | 4 | 26 | 0 | 131 mm | Good | Wollongong in June |
| July | 16° / 10° | 3 | 28 | 0 | 66 mm | Good | Wollongong in July |
| August | 17° / 10° | 3 | 28 | 0 | 84 mm | Good | Wollongong in August |
| September | 19° / 12° | 3 | 27 | 0 | 72 mm | Good | Wollongong in September |
| October | 21° / 14° | 5 | 26 | 0 | 120 mm | Good | Wollongong in October |
| November | 22° / 16° | 6 | 24 | 0 | 135 mm | Good | Wollongong in November |
| December | 24° / 17° | 6 | 25 | 0 | 111 mm | Perfect | Wollongong in December |