Avg highs 26°C / 79°F; warm days, cooling nights
| Category | August | September | October |
|---|---|---|---|
Weather | Hot, ~28 °C, peak heat | Still warm (26 °C), water swimmable | Cooler (22 °C), rain increases |
Crowds & vibe | Packed with tourists | Mid-high early month, mellows after | Moderate; more locals out |
Key events | Jazz em Agosto | Santa Casa Alfama, MOTELx | Lisbon Marathon, DocLisboa |
Best for | Beachgoers, nightlife fans | Balanced mix: city + coast | Culture-lovers, hikers |
Book early? | Yes, all of August | Early Sept yes; mid-late flexible | Only if visiting during events |
Transport notes | Beach trains full weekends | Smoother rides post-summer | Possible closures for races |
Budget | High (peak rates) | Eases mid-month | More value deals |








| Event | Dates | Event Type | Location | What to expect |
|---|---|---|---|---|
Santa Casa Alfama Fado Festival | 26–27 Sept 2025 | Cultural Festival | Alfama neighborhood courtyards | Outdoor Fado concerts in Lisbon’s historic heart. Ticketed headline acts plus free plaza sets. |
MOTELx Horror Film Festival | 10–15 Sept 2025 | Film Festival | Cinema São Jorge | Cult-favorite genre fest with premieres, campy classics, and late-night shorts. |
Feira da Luz (Carnide) | Through mid-Sept 2025 | Local Fair | Largo da Luz, Carnide | Historic fair with food stalls, games, and local concerts. Family-friendly, community vibe. |
Greenfest Lisbon | 19–21 Sept 2025 [TBC] | Sustainability Expo | Estoril Congress Center | Portugal’s largest eco-lifestyle event with talks, exhibits, and green products. Easy train ride; pair with a beach day. |
Out Jazz (final shows) | Sundays through 22 Sept 2025 | Live Music Series | Rotating Lisbon parks | Free outdoor jazz concerts. Bring a blanket and wine for a picnic-style groove. |










