The weather forecast for September 14, 2026 covers the municipalities of Mafra, Sintra, Torres Vedras, Ericeira, Santa Cruz and Lisbon, with information for September 14 to 17. All municipalities begin the week with clear skies on Monday, with temperatures ranging between 18º and 35º, with Lisbon recording the highest values.
From Tuesday onwards, the sky becomes progressively cloudier in all regions, starting with partly cloudy skies and evolving to mostly clear skies on Wednesday and Thursday. Temperatures gradually drop throughout the week, with minimums ranging between 14º and 22º, and maximums between 21º and 31º.
The predominant winds are from the north or northeast, with intensity varying from light on Monday to moderate on the following days. Torres Vedras has the highest temperatures, with a maximum of 34º on Monday, while Santa Cruz and Ericeira record the mildest temperatures.
The Portuguese Institute for the Sea and Atmosphere issued a yellow warning for hot weather in the Lisbon district, valid between 6:04 PM on September 13 and 6:00 PM on September 14, due to persistently high maximum temperature values. The last update was made on September 13, 2026 at 6:03 PM.
