Click on a day for an hourly weather forecast
The temperatures in Dunedin in September are quite cold with temperatures between 7°C and 11°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Dunedin 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.
Please note that Dunedin can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Dunedin in September 2025.
If you’re planning to visit Dunedin in the near future, we highly recommend that you review the 14 day weather forecast for Dunedin before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 11° | 6 | 26 | 0 | 82 mm | Good | Dunedin in January |
| February | 16° / 11° | 4 | 24 | 0 | 86 mm | Good | Dunedin in February |
| March | 15° / 11° | 4 | 27 | 0 | 52 mm | Good | Dunedin in March |
| April | 13° / 10° | 4 | 26 | 0 | 71 mm | Ok | Dunedin in April |
| May | 12° / 8° | 5 | 26 | 0 | 71 mm | Ok | Dunedin in May |
| June | 10° / 7° | 5 | 25 | 0 | 64 mm | Ok | Dunedin in June |
| July | 9° / 6° | 4 | 26 | 0 | 56 mm | Ok | Dunedin in July |
| August | 10° / 6° | 5 | 25 | 1 | 54 mm | Ok | Dunedin in August |
| September | 11° / 7° | 4 | 26 | 1 | 44 mm | Ok | Dunedin in September |
| October | 12° / 7° | 6 | 25 | 0 | 75 mm | Ok | Dunedin in October |
| November | 13° / 9° | 5 | 25 | 0 | 72 mm | Ok | Dunedin in November |
| December | 15° / 11° | 6 | 25 | 0 | 86 mm | Good | Dunedin in December |