Click on a day for an hourly weather forecast
The weather in Milford Sound in September is very cold with temperatures between 1°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Milford Sound. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Milford Sound during September. It’s important to get out your snow boots and warm mittens to stay warm while you explore Milford Sound.
Our weather forecast can give you a great sense of what weather to expect in Milford Sound in September 2025.
If you’re planning to visit Milford Sound in the near future, we highly recommend that you review the 14 day weather forecast for Milford Sound before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 6° | 14 | 17 | 0 | 327 mm | Ok | Milford Sound in January |
| February | 16° / 6° | 11 | 17 | 0 | 284 mm | Ok | Milford Sound in February |
| March | 15° / 6° | 12 | 19 | 0 | 252 mm | Ok | Milford Sound in March |
| April | 12° / 4° | 12 | 17 | 1 | 290 mm | Bad | Milford Sound in April |
| May | 9° / 3° | 14 | 15 | 2 | 320 mm | Awful | Milford Sound in May |
| June | 7° / 1° | 11 | 16 | 3 | 211 mm | Awful | Milford Sound in June |
| July | 7° / 1° | 14 | 13 | 4 | 269 mm | Awful | Milford Sound in July |
| August | 8° / 1° | 12 | 15 | 4 | 242 mm | Awful | Milford Sound in August |
| September | 9° / 1° | 14 | 11 | 5 | 367 mm | Awful | Milford Sound in September |
| October | 11° / 2° | 15 | 13 | 3 | 367 mm | Awful | Milford Sound in October |
| November | 13° / 3° | 14 | 15 | 1 | 325 mm | Bad | Milford Sound in November |
| December | 15° / 5° | 12 | 19 | 0 | 273 mm | Ok | Milford Sound in December |