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Weather in September in Porto

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< September >
 
Normal Max/ High Temperature 24°C (75°F)
 
Average Temperature 19°C (66°F)
 
Min/ Low Temperature 14°C (57°F)
Average Sea or Water Temp 16°C(61°F)
 
Normal Precipitation 64mm (2.5in)
Number of Wet Days (probability of rain on a day) 10 (33%)
Average Sunlight per day 07:40
Average Daylight per day 12:25
Sunny (Cloudy) Daylight Hours 63% (37%)
Sun altitude at solar noon on the 21st day.
49.5°


  • The average sea tempeature is 16 °C (60.8 °F).
  • The average temperature in Porto in September is somewhat warm at 19 °C (66.2 °F).
  • Afternoons can be fairly hot with average high temperatures reaching 24 °C (75.2 °F).
  • Overnight temperatures are generally mild with an average low of 13.9 °C (57 °F).
  • The variation/ range of diurnal average temperatures in September is 10.1 °C (18.2 °F).
  • The weather in September is marginally dry with rain at times. Only 64mm (2.5in) of water descends across an average of 10 days.
  • The skies in Porto are slightly sunny having an average of a welcome 7:40 of blazing solar radiation daily.
  • The shortest day is 11:45 long and the longest day is 13:06 long with an average length of 12:25.
  • There are approximately 4:34 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 62.7% of daylight hours and cloudy 37.3% of daylight hours.

Check the distance to and compare the Porto September averages with somewhere beginning with:

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Weather Trend Graph for September in Porto , Portugal

Graph of weather in Porto  in September

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