Mild
Average highs are around 24°C, so days are mild rather than hot.
September verdict
Porto, Portugal in September
Weather score57Good
Good for holiday weather
Average highs are around 24°C, so days are mild rather than hot. Sunshine averages 7.4h per day, enough for a balanced month. Rainfall averages 62mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
24°C
Rain
62mm
Sun
7.4h
Sea
17°C
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 62mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Porto, Portugal with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September24°C average high
September is one of Porto's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September62mm average rain
September sits on the drier side of Porto's year, which helps with sightseeing and transfers.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September7.4 hours average sun
September sits close to Porto's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September17°C average sea
September is one of Porto's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to October
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
September57 weather score
September scores above Porto's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
