The weather forecast for September 3, 2026 covers the municipalities of Mafra, Sintra, Torres Vedras and Lisbon, as well as the localities of Ericeira and Santa Cruz, presenting the meteorological conditions for the days from September 3 to 6, 2026.
On Thursday, September 3, the municipalities of Mafra, Sintra, Torres Vedras and Lisbon have clear skies, with temperatures between 15º and 40º, with Torres Vedras and Lisbon being the warmest localities with a maximum of 40º. Ericeira and Santa Cruz have few clouds, with temperatures between 15º and 29º. Winds are mostly light to moderate, blowing from the east in Mafra, Torres Vedras and Lisbon, and from the north in Ericeira, Sintra and Santa Cruz.
From Friday, September 4, the sky becomes partly cloudy in most localities, with a drop in maximum temperatures. Torres Vedras maintains the highest temperatures, ranging between 20º and 35º on Friday, while Lisbon presents between 23º and 33º.
The Portuguese Institute of the Sea and the Atmosphere issued a yellow warning for hot weather, valid between 9:00 AM on September 3 and 6:00 PM on September 5, due to high values of maximum temperature. The last update of the forecast was made on September 2, 2026 at 6:21 PM.
