Weather in Lissabon in maj

Climate normals based on 10 years of historical data for Lissabon, Portugal.

Average high

23°C

Average low

14°C

Rainfall

40 mm

5 rainy days

Sunshine

6.4h/day

Luftfuktighet

66%

Sea temperature

17.5°C

How Hot Is Lissabon in maj?

Lissabon basks in warm days: 23°C highs, 14°C lows, daily average 18°C. The pattern barely shifts from April — just a 3°C difference in average high.

Good sun and long days define May in Lissabon: 6.4h of direct sun on average.

Showers come and go in Lissabon: about 40mm of rain over 5 days.

May brings sticky conditions to Lissabon — humidity averages 66%, particularly noticeable in the afternoons.

Water temperatures around 17.5°C make May early-season swimming possible in Lissabon.

Lissabon sees consistent breezes in May: typical wind speeds of 22 kph.

Expect a mix of sunny and cloudy stretches: 47% average cloud cover in Lissabon.