Weather in Lisabon in září

Climate normals based on 10 years of historical data for Lisabon, Portugalsko.

Average high

26°C

Average low

18°C

Rainfall

36 mm

4 rainy days

Sunshine

6.8h/day

Vlhkost

67%

Sea temperature

18.4°C

How Hot Is Lisabon in září?

Lisabon starts to ease back from summer's peak — afternoon highs of 26°C and overnight lows of 18°C in September.

September brings reliable sunshine to Lisabon: 6.8h a day, with daylight from 7:20 am to 7:45 pm.

Lisabon averages 36mm of rain in September — manageable showers on 4 days.

September brings sticky conditions to Lisabon — humidity averages 67%, particularly noticeable in the afternoons.

Sea temperatures sit at 18.4°C off Lisabon this September — refreshing but bearable.

Wind picks up in Lisabon during September — averaging 21 kph, with gustier afternoons.

Expect a mix of sunny and cloudy stretches: 38% average cloud cover in Lisabon.