The Portuguese Institute for Sea and Atmosphere (Instituto Português do Mar e da Atmosfera or IPMA) has warned of an Atlantic depression with unusual characteristics for August approaching mainland Portugal. Starting Sunday, the system is expected to bring persistent rain, strong winds, and rough seas, offering a significant shift from recent summer heat. Meteorologists note that while the storm follows an autumnal pattern, its exact trajectory remains under monitoring.
Atypical Atlantic storm expected to bring rain this weekend
Thursday, 20 August 2026AI summary
Context & Explainers
A red warning is the highest alert level issued by Portugal's weather agency, the Portuguese Institute for the Sea and the Atmosphere (Instituto Português do Mar e da Atmosfera or IPMA), used when conditions pose a very high risk to life and property. Under a red warning authorities may close roads, suspend transport and advise people to avoid coastal and flood‑prone areas, so follow civil protection instructions during the Friday–Saturday storm period.
6 sources
- 10-day outlook for Portugal: two Atlantic storms will bring heavy rain and gusts exceeding 80 km/hMeteored Portugal ·
- Typical autumn storm may bring rain and strong winds starting Sundaycmjornal.pt ·
- ‘Atypical’ August weather to bring rain and strong winds to PortugalPortugal Resident ·
- Autumn storm brings rain and wind starting Sundayobservador.pt ·
- Typical autumn storm may bring rain and wind starting Sundayrtp.pt ·
- Persistent rain, strong wind and rough seas: storm with "unusual characteristics" for August may affect Portugalcnnportugal.iol.pt ·
