Weather
Average highs sit around 29°C with lows near 18°C. It is one of the drier months — pack light.
Crowds & demand
Crowd levels are High for Lisbon — the biggest crowds of the year.
Prices & value
Prices run high season this month: premium prices.
Events & what’s on
No major festivals fall in August, so the destination feels like its everyday self.
The verdict
August is a strong choice for Lisbon: 29° / 18°, with the biggest crowds of the year and premium prices.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated July 2026
