Lisbon weather in August
“Reliably warm, dry, and generous with light.”
Roughly 1 rainy days across the month, on average.
August is peak summer in Lisbon, delivering hot, dry, and gloriously sunny weather. Daytime temperatures average 28.3°C (83°F), while nights cool to a pleasant 18.5°C (65°F). Rain is virtually non-existent with only 1.5mm of precipitation expected across just 0.6 rainy days. You'll enjoy an impressive 12.4 hours of sunshine daily, making it ideal for beach trips and outdoor exploration. The Atlantic breeze keeps humidity manageable despite the heat.
August is festival season in Lisbon, with neighborhood street parties, live music, and traditional celebrations throughout the city. The atmosphere is festive and vibrant, though this is undoubtedly peak tourist season. Expect crowded attractions, higher accommodation prices, and busy restaurants, especially in the historic center and along the waterfront.
For 2026, August remains an excellent choice if you can handle crowds and heat. Book accommodations well in advance and visit major sites early in the day. The trade-off for peak season is guaranteed sunshine and warm swimming conditions at nearby beaches. Consider visiting nearby towns like Cascais or Sintra as day trips to escape the city crowds.
Bairro Alto is loud tourist bar strip; locals drink at LX Factory in Alcantara or Cais do Sodre pink street. Real ginjinha cherry liquor is at A Ginjinha in Rossio, one shot 1.5 euro since 1840. Pasteis de Belem is the original custard tart (recipe from 1837 Jeronimos monks); Manteigaria in Chiado is the modern rival. Tram 28 pickpockets work Alfama corners. Cod (bacalhau) has 365 recipes; Portuguese say one per day.
What to pack for Lisbon in August
- •Breathable cotton or linen, and a broad-brimmed hat
- •Reef-safe sunscreen and polarised sunglasses
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Lisbon in August
- →Quick-dry travel shirtAmazon · shop this
- →UPF sun hatAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
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Where to stay in Lisbon
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Compare hotels on Booking.com→Estimated August trip to Lisbon
Peak season prices — book early or shift by 2–3 weeks to save. Rule-based estimates from a couple based in London — actual prices vary.
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Things worth doing
Beach days at Costa da Caparica, sunset river cruises on the Tagus, explore hilltop neighborhoods like Alfama and Bairro Alto, visit nearby Sintra's palaces as a day trip.
August vs. the rest of the year
How this month compares in Lisbon. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Lisbon
August is one of the best months to visit Lisbon — alongside May, June, July. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for LisbonOther places with a similar climate right now
Lisbon in August — FAQ
Q01Should I visit Lisbon in August?
Should I visit Lisbon in August?
Yes — this is one of the best months of the year to visit. In August, Lisbon averages a high of 28°C (83°F) and a low of 19°C (65°F), with 2mm of rainfall across roughly 1 rainy days. April-May jacaranda bloom in Praca do Principe Real; June 12-13 Santo Antonio festival grills sardines on every Alfama street.
Q02What temperatures should I expect in Lisbon during August?
What temperatures should I expect in Lisbon during August?
The average high temperature in Lisbon during August is 28°C (83°F), with an average low of 19°C (65°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). August 32C plus Atlantic humidity; locals escape to Costa da Caparica beach on ferry 3, and Bairro Alto opens later at 11pm.
Q03Is August a rainy month in Lisbon?
Is August a rainy month in Lisbon?
Lisbon averages approximately 1 rainy days in August, with a total monthly rainfall of about 2mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04How should I dress for Lisbon in August?
How should I dress for Lisbon in August?
For Lisbon in August, pack light, breathable clothing (cotton or linen), sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. Grippy rubber-soled shoes for calcada portuguesa pavements which turn glass-slick in any drizzle on Alfama's 30% grades.
Q05Is August a busy travel month for Lisbon?
Is August a busy travel month for Lisbon?
Tourist crowds in Lisbon during August are typically high — this is peak season, expect crowds and higher prices. Consider this when planning accommodation — prices track crowd levels closely. Bairro Alto is loud tourist bar strip; locals drink at LX Factory in Alcantara or Cais do Sodre pink street. Real ginjinha cherry liquor is at A Ginjinha in Rossio, one shot 1.5 euro since 1840. Pasteis de Belem is the original custard tart (recipe from 1837 Jeronimos monks); Manteigaria in Chiado is the modern rival. Tram 28 pickpockets work Alfama corners. Cod (bacalhau) has 365 recipes; Portuguese say one per day.