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Lisbon's red rooftops and hills rolling down to the river in golden evening light, seen from aboveRooftop view over Porto, the Douro River and the Dom Luís I Bridge

Lisbon vs Porto in August

Lisbon and Porto are close in August. Lisbon averages 19–29°C with high crowds; Porto 16–26°C with high crowds.

By Daan · Last reviewed October 2026

Lisbon and Porto

The verdict for August

  • WeatherPorto has the better weather9/10 vs 10/10
  • CrowdsPorto is quieterHigh vs High
  • PricesPorto is cheaper€€€€€ vs €€€€
  • OverallVery similar6/10 vs 6/10
Lisbon's red rooftops and hills rolling down to the river in golden evening light, seen from above

Lisbon in August

Peak summer

Temperature
19–29°C
Crowds
High
Prices
€€€€€

+Hot, sunny and built for long beach days.

–Peak summer: busy and generally more expensive.

Not my pick if crowds are not your thing.

Lisbon in August
Rooftop view over Porto, the Douro River and the Dom Luís I Bridge

Porto in August

Warmest month, peak season

Temperature
16–26°C
Crowds
High
Prices
€€€€

+Warm temperatures and little average rainfall.

–Crowded attractions and expensive accommodation.

August has Porto’s highest average daytime temperatures and generally dry conditions. It is also a busy holiday month, so accommodation and popular restaurants can require advance planning.

Porto in August

Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.

Another month