The temperatures in Portsmouth in October are comfortable with low of 15°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Portsmouth 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.
Our weather forecast can give you a great sense of what weather to expect in Portsmouth in October 2025.
If you’re planning to visit Portsmouth in the near future, we highly recommend that you review the 14 day weather forecast for Portsmouth before you arrive.
Temperatures
22° / 15°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
93
mm
Sun Hours
10.0
Hrs
