The temperatures in Blenheim in October are quite cold with temperatures between 9°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Blenheim during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Blenheim can expect a few days of snow in October.
Our weather forecast can give you a great sense of what weather to expect in Blenheim in October 2025.
If you’re planning to visit Blenheim in the near future, we highly recommend that you review the 14 day weather forecast for Blenheim before you arrive.
Temperatures
15° / 9°
Rainy Days
7
Snowy Days
1
Dry Days
23
Rainfall
110
mm
Sun Hours
5.6
Hrs
