Find your Porto season
Mild means an average daily high of 18–25°C (64–77°F), ranked by closeness to 21°C, then fewer wet days. This compares weather only, without assuming prices or crowd levels.
Porto
October
21° / 14°C
13.1 wet days · 137 mm
June
22° / 15°C
5.1 wet days · 32 mm
May
19° / 13°C
9.4 wet days · 61 mm
September
24° / 16°C
5.9 wet days · 49 mm
July
24° / 16°C
2.8 wet days · 13 mm
August
25° / 17°C
3.7 wet days · 22 mm
A consistent comparison.
All cities here use NASA POWER daily data for 2001–2020. Nearby cities may share a regional grid cell; small numerical differences are not a reason to choose one over another. Lisbon’s dedicated planner uses a separate IPMA station series, so its numbers can differ.
Data sources & methods