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Climate · Porto

Porto in August

Warm and mostly dry, as the days shorten.

Typical weather, averaged over 30 years

August in Porto is warm: highs near 82°F, lows near 63°F. Rain falls on about one day a week, and the days shorten by 1 hour 10 minutes from the first week to the last.August in Porto is warm: highs near 28°C, lows near 17°C. Rain falls on about one day a week, and the days shorten by 1 hour 10 minutes from the first week to the last.

High
82°F28°Caverage
Low
63°F17°Caverage
Wet days
1a week · 13% of days
Daylight
13h 45mon average

Is August a good time to visit Porto?

Yes. August is one of Porto's best months (June to September).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How August sits in the year

week by week

Temperature

Highs near 82°F in August, against 58°F to 82°F through the year.Highs near 28°C in August, against 14°C to 28°C through the year.

Chance of a wet day

13% of days in August, against 13% to 45% through the year.

Cloud cover

28% cover in August, against 25% to 62% through the year.

Daylight

13h 45m in August, against 9h 15m to 15h 05m through the year.

Week by week, lightly smoothed, with August shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. July81°27°low 62°low 17°1 wet day a weekRain on about one day a week.
  2. August82°28°low 63°low 17°1 wet day a weekRain on about one day a week.
  3. September79°26°low 61°low 16°2 wet days a weekRain on about two days a week.

Where Porto sits, in August

Europe/Lisbon
this place
typical high in August 40°F4°C95°F35°C
Sunrise, mid-August
6:43 AMsets 8:35 PM
Above the sea
90 mlow-lying
Latitude
41.2°Nnorthern hemisphere
Nearest of ours
Valença do Douro88 km east

The land around Porto, shaded by its typical high in August, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Portugal in August

high · low · wet days
See August on the planning mapThe whole year in Porto

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Porto. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.