The average temperature is steady at 19°C (66°F), the same as August. The high average stays well over 24°C on the good days, and the expected low hangs around ...

Get the monthly weather forecast for Porto, Porto, Portugal, including daily high/low, historical averages, to help you plan ahead.

September weather in Porto Portugal. Daily high temperatures decrease by 4°F, from 75°F to 71°F, rarely falling below 64°F or exceeding 83°F.

The weather is suitable for spending time on Porto's beaches from June until the middle of September, and this aligns with the peak season. The best season ...

Porto weather in September 2025. Expect 24°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Porto in September.

The weather in Porto in September is pleasantly warm and humid but cool, with average highs of 77°F (25°C) and lows of 59°F (15°C).

September weather forecast in Porto · 1 September. Sunday. +24°. +19° · 2 September. Monday. +23°. +19° · 3 September. Tuesday. +23°. +18° · 4 September.

The temperature reaches around 25℃ during the daytime in September, falling away to 17℃ at night. The UV index will be moderate at this time of year, so not ...

There is a 57% chance of a perfect sunny day and a 43% chance of seeing some clouds, with on average 23mm of rainfall this month.