The weather in Portimao in September is hot. The average temperatures are between 20°C and 25°C.
You can expect a few rainy days in Portimao during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Portimao in September 2025.
If you’re planning to visit Portimao in the near future, we highly recommend that you review the 14 day weather forecast for Portimao before you arrive.
Temperatures
25° / 20°
Rainy Days
1
Snowy Days
0
Dry Days
29
Rainfall
8
mm
Sun Hours
11.7
Hrs
