The Portuguese Institute for Sea and Atmosphere (Instituto Português do Mar e da Atmosfera or IPMA) has issued yellow weather warnings for 13 districts across mainland Portugal due to extreme heat. Temperatures are expected to peak at 38 ºC in interior regions before a shift in atmospheric circulation brings cooler weather on Tuesday. The Madeira archipelago is also under a heat warning, with regional authorities maintaining a strict ban on open fires and agricultural burning.
Yellow weather warnings issued as temperatures reach 38 ºC
Sunday, 13 September 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.
