What is the weather like in Lisbon vs Porto in September?

In September, Lisbon averages 27°C high / 18°C low with about 24 mm of rain; Porto averages 24°C high / 14°C low with about 57 mm.

Lisbon vs Porto in September

Lisbon and Porto are nearly tied in September — 89 vs 91 on SeasonMap's comfort score. Lisbon is warm, dry, clean air; Porto is warm, a little rain, muggy air.

Lisbon vs Porto — September climate, side by side

	Lisbon	Porto
Comfort score	89/100 (A)	91/100 (S)
Feels-like high	27°C	24°C
Avg high / low	27° / 18°	24° / 14°
Rainfall	24 mm	57 mm
Rainy days	3	7
Humidity	73%	75%
Air quality (AQI)	38	51

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Lisbon vs Porto in September — FAQ

Is September better in Lisbon or Porto?: Lisbon and Porto are nearly tied in September — 89 vs 91 on SeasonMap's comfort score. Lisbon is warm, dry, clean air; Porto is warm, a little rain, muggy air.
What is the weather like in Lisbon vs Porto in September?: In September, Lisbon averages 27°C high / 18°C low with about 24 mm of rain; Porto averages 24°C high / 14°C low with about 57 mm.