August · Portugal
Best time to visit Porto in August Weather, crowds & prices
Weather in Porto in August
Average temperature 21°C, 3 mm of rain, about 31 days with 6+ hours of sunshine and 74% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
9.7/10
Ranked #2 of 12 months
- Avg temp
- 21°C
- Rainfall
- 3 mm
- Humidity
- 74%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Porto scores 9.7/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 21°C, 3 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
April–June brings 18–24°C days and soft Atlantic light to Porto’s azulejo-clad Ribeira and port cellars.
August is one of the strongest months in Porto (2nd)
August averages 21°C (69°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Rain is a non-issue at 3 mm for the month, with about 31 days with 6+ hours of sunshine and 13.7 hours of daylight to work with.
A 9.7/10 puts this among the year's best months in Porto (2nd of 12); only July scores higher, at 9.8/10.
Pack light clothing, a hat and real sun protection.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Porto in August?
- In August, Porto averages 21°C, 3 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.7/10.
- Is August a good time to visit Porto?
- August earns a 9.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Porto in August?
- Expect about 3 mm of rain in August. Average humidity is 74% and there are about 31 days with 6+ hours of sunshine.
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