Alte weather in September 2025

Expect 26°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Alte in September. Check more long-term weather averages for Alte in September before you book your next holiday to Algarve in 2025/2026.

  • 26°C maximum daytime temperature in September in Alte26
    26°C max day temperature
  • 9 hours of sunshine per day
  • 3 days with some rainfall in September in Alte3
    3 days with some rainfall
  • 17°C minimum night-time temperature in September in Alte17
    17°C min night temperature
  • 12 hours of daylight per day in September in Alte12
    12 hours of daylight per day
  • Low heat & humidity in September in AlteL
    Low heat & humidity
  • 17 mm monthly rainfall in September in Alte17
    17 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Alte7
    7 (High) UV index

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The September weather guide for Algarve (Alte) 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.

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

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More about the Algarve

How hot is it in Alte in September?

Daytime temperatures usually reach 26°C in Alte in September with low heat and humidity, falling to 17°C at night.

How sunny is it in Alte in September?

There are normally 9 hours of bright sunshine each day in Alte in September - that's 70% of daylight hours.

Does it ever rain in Alte in September?

There are usually 3 days with some rain in Alte in September and the average monthly rainfall is 17mm.

Alte September sunrise & sunset times

Browse the sunrise and sunset times for Alte in September 2025. Select a month to view Alte sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:03 19:01
Monday, 15th September 2025 06:15 18:40
Tuesday, 30th September 2025 06:27 18:17

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