Climate Overview

Lisbon is located on the Atlantic, near the mouth of the Tagus. The climate is Mediterranean-Atlantic: hot, dry summers and mild, rainier winters. Compared to Barcelona or Rome, the climate is somewhat more moderate thanks to the Atlantic influence.

Month	Temperature	Rainy Days	Sunshine Hours	Sea Temperature
Jan–Feb	8–15°C	8–10	5–6h	15°C
Mar–Apr	11–19°C	6–8	7–8h	16–17°C
May–Jun	15–26°C	3–4	9–11h	17–19°C
Jul–Aug	18–30°C	0–1	11–12h	19–20°C
Sep–Oct	17–27°C	4–6	8–9h	20–18°C
Nov–Dec	10–16°C	8–10	5–6h	16–15°C

Important: Lisbon can get really hot in summer — 35–40°C is not uncommon in July/August. But unlike Barcelona, a pleasant Atlantic breeze often blows, making the heat more bearable. At night, it cools down to 18–20°C.