Porto weather
11-year climate averages (2015–2025), month by month
Porto in september
Current month averages, based on 11 complete years of records (2015–2025). Read the full guide →
Porto sits at 41°09′N 8°37′W in Portugal, in Europe. Its climate profile is shaped by these coordinates — and the 11 complete years of records below (2015–2025) reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
Porto weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Porto.
Places that feel like Porto in september
Porto weather — FAQ
Q01What is the hottest month in Porto?
What is the hottest month in Porto?
August runs the highest averages in Porto, with typical daytime highs of 25°C (77°F). Plan around midday and consider accommodation with reliable cooling.
Q02What is the coldest month in Porto?
What is the coldest month in Porto?
January brings the lowest averages, with daytime highs near 14°C (56°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q03Which month has the most rain in Porto?
Which month has the most rain in Porto?
December typically records the highest monthly rainfall — around 188mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q04What is the climate like in Porto?
What is the climate like in Porto?
Porto, Portugal has mild summers, mild winters, moderate seasonal rainfall. You can read the detailed month-by-month breakdown on this page.