Portugal weather in August
In August, Portugal averages 28 to 32°C by day across Madeira, the Algarve and Lisbon. Algarve is the warmest at 32°C, Madeira the coolest at 28°C. The sea is 19 to 25°C.
Portugal in August, place by place
Warmest first. Anywhere at 24°C or more is proper beach weather. Tap a place for its full August detail.
Heading to Portugal in August?
Share the places you've saved on TikTok and Instagram for Portugal to Dream Trip. It pins them on a map and builds your days around them.
Portugal in August: quick answers
Is Portugal hot in August?
In August, Portugal averages 28 to 32°C by day across Madeira, the Algarve and Lisbon. Algarve is the warmest at 32°C, Madeira the coolest at 28°C. The sea is 19 to 25°C. August is hot in Algarve: proper beach weather.
Where is warmest in Portugal in August?
Algarve, at an average high of 32°C. The driest is Algarve, with about 0 mm of rain.
Can you swim in the sea in Portugal in August?
Yes: Madeira (25°C) has sea temperatures of 21°C or more, comfortable without a wetsuit.
How we measured this
Portugal here means Madeira, the Algarve and Lisbon: the places we measure. Figures are averages of every day from 2016 to 2025 from the Open-Meteo historical weather archive (ECMWF ERA5); sea temperatures are 2023 to 2025 averages. Rain is the average monthly total, and 150 mm or more counts as rainy season.
Planning Portugal in August?
Save the places you find on TikTok and Instagram for Portugal to one map, and Dream Trip turns them into a day-by-day plan.
