Lisbon, Portugal

Lisbon sits on the Mediterranean in Portugal, and the 2015–2024 weather record gives its sunshine a clear shape: the July peak reaches a 100/100 sun score, with daytime highs around 28°C — a solid base for a city break.

August is the heat peak, averaging 29°C highs; January is the cool end, when nights dip to around 9°C. Rain is most likely in November, when about 34% of days see meaningful rainfall, and least likely in August (1%). The genuinely warm window — average highs of 24°C or better — covers June–September.

The seasonal arc is clear in the data: summer averages 27°C against winter's 16°C, while rain-day odds move from 26% in winter and 26% in spring to 5% in summer and 26% through autumn. Summer wins on the numbers and winter loses them; everything in between is a trade-off between warmth and crowds. For warmth without the densest crowds, the shoulder play is June: still 25°C highs, with a sun score of 99.

Best months to visit Lisbon

Our month-by-month scoring puts July first (100/100), with August (100) and June (99) close behind. Anything in March–November clears our 70-point reliability bar. Skip January if sunshine is the point — it bottoms out at 61/100.

For context: in July, Lisbon is drier than 62% of the mediterranean destinations we track.

Month-by-month breakdown for Lisbon → · More destinations for July →

As of the latest refresh, Lisbon's next 15 days span 10°C to 27°C; 6 days look mostly sunny while 2 look likely to be wet — a live sun score of 79/100.