Beaches, lakes & rivers

Where to swim, paddle and cool off in Portugal, and how clean the water is.

🏖️

BeachesThe best stretches near Lisbon and Porto, Blue Flag or equivalent ratings, lifeguard seasons and facilities.

🏞️

LakesSwimming lakes, water quality reports and lakeside towns.

🛶

RiversSafe swimming spots, kayaking and rafting, and rivers to avoid.

🧪

Water qualityOfficial bathing-water monitoring, seasonal algae and jellyfish, and whether tap water is drinkable.

☀️

SeasonMild Atlantic-Mediterranean; warm dry summers, wet mild winters. The Algarve is sunniest; the north is wetter.

⚠️

HazardsCurrents, rips, marine life and flags. Severe-weather risk rating 30/100.