The Portuguese Institute of the Sea and Atmosphere (Instituto Português do Mar e da Atmosfera or IPMA) reported that September 3, 2026, was the fourth hottest day for the month since 1941. Alcochete recorded the highest temperature in the country, reaching 44.3 degrees Celsius.
Portugal records fourth hottest September day in 85 years
Friday, 4 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.
6 sources
- September 3rd was the 4th hottest day of the month in 85 yearsobservador.pt ·
- Thursday was the fourth hottest day in September in 85 yearspublico.pt ·
- Thursday was the fourth hottest September day in 85 yearseco.sapo.pt ·
- Portugal recorded its fourth hottest September day in the last 85 years on Thursdayexpresso.pt ·
- Thursday was the fourth hottest day in September in 85 years, says IPMArtp.pt ·
- Portugal records fourth hottest September day since 1941SAPO ·
