ISN Mans the 1 June Praia-Vigiada Surveillance Window Across the Portuguese Coast — Nadadores-Salvadores Deploy Through 30 September, the Bandeira Verde-Amarela-Vermelha Frame Operates and Praias Não Vigiadas Carry the Severity Tail
Monday 1 June 2026 opens the canonical Praia-Vigiada surveillance window — ISN nadadores-salvadores deploy through 30 September under the Lei 44/2002 / Decreto-Lei 100/2003 frame, the Bandeira Verde-Amarela-Vermelha tape operates and Praias Não Vigiadas carry the structural drowning-severity tail.