Porto weather in September 2021

Get the latest coronavirus (COVID-19) updates for Portugal with current travel advice, statistics and online resources.

  • 24°C maximum daytime temperature in September in Porto24
    24°C max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Porto8
    8 days with some rainfall
  • 14°C minimum night-time temperature in September in Porto14
    14°C min night temperature
  • 12 hours of daylight per day in September in Porto12
    12 hours of daylight per day
  • No heat & humidity in September in Porto0
    No heat & humidity
  • 62 mm monthly rainfall in September in Porto62
    62 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Porto6
    6 (High) UV index
  • 18°C sea temperature in September in Porto18
    18°C sea temperature

Recommended for Portugal

  • Top deals & discounts
  • Porto weather overview
  • Porto climate averages by month
  • More destinations
  • Best time to go to Porto
  • Porto 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The September weather guide for Porto, Portugal shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

  • Save on holiday homes, villas & apartments in Portugal
  • Choose from over 34,000 holiday rentals
  • Book properties in the Algarve, Lisbon, Porto & more

VRBOHoliday rental finder

How hot is it in Porto in September?

Daytime temperatures usually reach 24°C in Porto in September, falling to 14°C at night.

How sunny is it in Porto in September?

There are normally 8 hours of bright sunshine each day in Porto in September - that's 60% of daylight hours.

How warm is the sea around Porto in September?

The average sea temperature around Porto in September is 18°C.

Does it rain in Porto in September?

There are usually 8 days with some rain in Porto in September and the average monthly rainfall is 62mm.

Porto sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Porto in September 2021. Select a month to view Porto sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 07:01 20:07
Wednesday, 15th September 2021 07:15 19:43
Thursday, 30th September 2021 07:30 19:18
  • Save on holiday homes, villas & apartments in Portugal
  • Choose from over 34,000 holiday rentals
  • Book properties in the Algarve, Lisbon, Porto & more

VRBOHoliday rental finder

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about Portugal

Where is hot in Portugal in September for 2021/2022?

Below are average maximum temperatures at popular destinations in Portugal in September. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.