The temperatures in Greymouth in September are quite cold with temperatures between 6°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Greymouth 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 Greymouth in September 2025.
If you’re planning to visit Greymouth in the near future, we highly recommend that you review the 14 day weather forecast for Greymouth before you arrive.
Temperatures
12° / 6°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
126
mm
Sun Hours
8.5
Hrs
