Alvor weather in September 2025

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

  • 26°C maximum daytime temperature in September in Alvor26
    26°C max day temperature
  • 9 hours of sunshine per day
  • 3 days with some rainfall in September in Alvor3
    3 days with some rainfall
  • 18°C minimum night-time temperature in September in Alvor18
    18°C min night temperature
  • 12 hours of daylight per day in September in Alvor12
    12 hours of daylight per day
  • Low heat & humidity in September in AlvorL
    Low heat & humidity
  • 15 mm monthly rainfall in September in Alvor15
    15 mm of monthly rainfall
  • UV (maximum) index 7 (High) in September in Alvor7
    7 (High) UV index
  • 20°C sea temperature in September in Alvor20
    20°C sea temperature

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The September weather guide for Algarve (Alvor) 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 Alvor in September?

Daytime temperatures usually reach 26°C in Alvor in September with low heat and humidity, falling to 18°C at night.

How sunny is it in Alvor in September?

There are normally 9 hours of bright sunshine each day in Alvor in September - that's 71% of daylight hours.

How warm is the sea around Alvor in September?

The average sea temperature around Alvor in September is 20°C.

Does it ever rain in Alvor in September?

There are usually 3 days with some rain in Alvor in September and the average monthly rainfall is 15mm.

Alvor September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:05 19:03
Monday, 15th September 2025 06:17 18:42
Tuesday, 30th September 2025 06:29 18:19

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