The Portuguese Institute for Sea and Atmosphere (Instituto Português do Mar e da Atmosfera or IPMA) reported that the heatwave experienced in May was the second longest and second most intense since records began. The event lasted 9.5 days, trailing only a 9.7-day heatwave recorded in 1964.
May heatwave ranks as second longest on record
Tuesday, 9 June 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.
4 sources
- Here is the explanation for the abnormal heatwave felt in Portugal in Maycnnportugal.iol.pt ·
- May heatwave in mainland Portugal was the second longest - IPMALUSA ·
- May heatwave in mainland Portugal was the second longest on recordcmjornal.pt ·
- May heatwave was the second longest on recordobservador.pt ·
