Cascais weather in October 2025

Expect 22°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Cascais in October. Check more long-term weather averages for Cascais in October before you book your next holiday to Portugal in 2025/2026.

  • 22°C maximum daytime temperature in October in Cascais22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in October in Cascais11
    11 days with some rainfall
  • 14°C minimum night-time temperature in October in Cascais14
    14°C min night temperature
  • 11 hours of daylight per day in October in Cascais11
    11 hours of daylight per day
  • No heat & humidity in October in Cascais0
    No heat & humidity
  • 89 mm monthly rainfall in October in Cascais89
    89 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Cascais4
    4 (Moderate) UV index
  • 18°C sea temperature in October in Cascais18
    18°C sea temperature

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The October weather guide for Portugal (Cascais) 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 Portugal

How hot is it in Cascais in October?

Daytime temperatures usually reach 22°C in Cascais in October, falling to 14°C at night.

How sunny is it in Cascais in October?

There are normally 7 hours of bright sunshine each day in Cascais in October - that's 60% of daylight hours.

How warm is the sea around Cascais in October?

The average sea temperature around Cascais in October is 18°C.

Does it rain in Cascais in October?

There are usually 11 days with some rain in Cascais in October and the average monthly rainfall is 89mm.

Cascais October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:34 18:20
Thursday, 16th October 2025 06:48 17:58
Friday, 31st October 2025 07:04 17:38

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