Lisbon is worth visiting year-round, but timing makes a significant difference to your experience, the crowds you encounter and the prices you pay. Here is the full picture.
✔ Best overall: May–June and September–October
✔ Best value: November–March
✔ Most crowded: July–August (hottest and most crowded)
Month by Month — Lisbon
January
Mild (11–15°C), some rain, very quiet, cheapest hotels. Good for museums — Museu Nacional do Azulejo and MAAT almost empty.
February
Mild, Carnaval traditions. Very affordable. Pastéis de Belém queue much shorter than summer. Good city break.
March
Warming (13–18°C), spring beginning. Easter week. Lisbon half-marathon (March). Crowds manageable.
April
15–20°C, spring sunshine, Lisbon in bloom. 25 April (Carnation Revolution anniversary) — national holiday with events.
May
18–23°C, Festas dos Santos Populares preparation, long warm evenings. One of Lisbon's finest months.
June
21–26°C, Festas de Santo António (12–13 June — the biggest street festival in Lisbon). Getting busy — book ahead.
July
24–30°C, very hot, trams extremely crowded. Tuk-tuks and tours in high demand. Very expensive. Book 2–3 months ahead.
August
25–31°C, peak season. Alfama very crowded, tram 28 packed. Many locals leave for the Algarve. Expensive.
September
22–27°C, crowds dropping significantly, sea still warm at Cascais and Sintra. Often Lisbon's finest month.
October
17–22°C, very pleasant, much quieter, 25–35% cheaper. Day trips to Sintra and Cascais ideal without summer crowds.
November
13–17°C, some rain. Quiet and cheap. Good for fado houses (more authentic atmosphere without tourist groups).
December
10–15°C, Christmas lights in Chiado and Rossio. New Year's Eve fireworks from the river. Atmospheric and affordable outside the holiday week.
Lisbon Weather Summary
Lisbon has one of Europe's most pleasant climates — mild winters (10–15°C), warm summers (22–30°C) and over 300 days of sunshine annually. It's significantly warmer and drier than Porto. The Atlantic coast (Cascais, Sintra) is 3–5°C cooler than the city in summer with a refreshing sea breeze. Rain falls mainly October–March but rarely affects sightseeing significantly.
When Are Lisbon Hotels Cheapest?
November–March is 35–45% cheaper than July–August. April, May, September and October are 15–25% below peak. Tram 28 is overcrowded year-round — the Alfama is better explored on foot.
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What is the best month to visit Lisbon?
May and September consistently. Warm, long days, manageable crowds and prices below peak. June is also excellent but the Festas de Santo António week (12–13 June) pushes accommodation prices up.
Is Lisbon good in winter?
Very good — mild, cheap and more authentic. The fado houses, pastéis de nata and azulejo tile exploration are all better without summer tourists. January–February are the quietest and cheapest months.
When is the Festas de Santo António?
12–13 June — Lisbon's biggest street festival. Sardines grilling on every corner, street parties in Alfama, fireworks. Book accommodation 2–3 months ahead if visiting then.