The weather forecast for September 11, 2026, published by Jornal de Mafra with data from the Portuguese Institute of the Sea and the Atmosphere, covers the municipalities of Mafra, Sintra, Torres Vedras, Lisbon, Ericeira and Santa Cruz, for September 11 to 14.
On Friday, September 11, all locations present clear skies, with minimum temperatures between 15º and 17º and maximum temperatures between 23º and 33º. Wind is generally moderate, blowing from the north in most localities, with the exception of Torres Vedras where it is from the northwest.
On Saturday, September 12, clear skies are expected in most locations, although Ericeira, Sintra and Santa Cruz present partly cloudy skies. Minimum temperatures vary between 15º and 18º, while maximum temperatures rise to values between 24º and 35º, and the wind tends to weaken.
On Sunday, September 13, partly cloudy skies persist in Ericeira and Santa Cruz, while the remaining locations maintain clear skies. Temperatures continue to rise, with minimums between 17º and 21º and maximums between 26º and 37º, and the wind remains weak, varying between north and east.
On Monday, September 14, clear skies return to most locations, with stable or slightly lower temperatures. Torres Vedras presents temperatures between 19º and 36º, Lisbon between 21º and 36º, and the wind returns to blowing from the north or northwest in a weak to moderate manner. There are no weather warnings issued for the Lisbon district.
