Hot air from North Africa is carrying dust across the mainland on 16 and 17 October. The DGS expects poor air quality and asks children, older people and anyone with asthma or heart disease to stay indoors where possible, windows shut.
Eight months after the wettest February in 47 years, IPMA's maps show meteorological drought in the Alentejo and Algarve, while APA's 6 October bulletin puts six northern basins, led by the Lima at 37 percent, below their October average. No household restrictions have been announced.
The storms that gave mainland Portugal its wettest February in 47 years were also a rare chance to measure Atlantic moisture high above the Alentejo. The data feeds the models behind weather forecasts.
High pressure over Iberia brings clear skies, light winds and no rain from Monday. IPMA's city forecasts put Lisbon at 30.6 °C and Santarém at 31.7 °C on Wednesday.
IPMA says September 2026 was mainland Portugal's hottest since 1931: a mean of 23.41 °C, maximums 4.21 °C above normal, a national heatwave at 72 percent of stations and only 12.7 mm of rain. What it means for drought, reservoirs and the weeks ahead.
Six southern and central districts are on yellow alert for thunder, hail and gusts this afternoon. Tuesday looks wettest in the north, and IPMA expects settled weather from Thursday.
The IPMA's seasonal bulletin puts the June to August average at 23.17 degrees, behind only 2025 and 2005. Mora hit 44.3 degrees, a wet August rescued the rainfall total, and the south is still in drought.
