A red flag means 'danger, don't enter the water'. Pay attention to signs about cliff erosion. High temperatures and bushfires regularly impact mainland Portugal during the summer months.
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Red flag is high hazard meaning high surf and/or strong currents. Yellow flag is medium hazard meaning moderate surf and/or currents. Green flag is low hazard meaning calm conditions, exercise caution. Purple flag means dangerous marine life spotted.
Swimming Safety in PortugalPortugal is lined by the Atlantic Ocean which offers swimmers cool waters and large waves, depending on the location. Caution should be taken for beaches connected to rivers or streams since currents may be strong.
Dogs and other pets are not permitted to be circulating outside specific areas as well as the deposit or abandonment of any waste, glass objects or blunt material outside the proper receptacles is highly prohibited on Portuguese beaches.