Portimao weather in August 2025

Expect 26°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Portimao in August. Check more long-term weather averages for Portimao in August before you book your next holiday to Algarve in 2025/2026.

  • 26°C maximum daytime temperature in August in Portimao26
    26°C max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in August in Portimao1
    1 day with some rainfall
  • 18°C minimum night-time temperature in August in Portimao18
    18°C min night temperature
  • 14 hours of daylight per day in August in Portimao14
    14 hours of daylight per day
  • Moderate heat & humidity in August in PortimaoM
    Moderate heat & humidity
  • 2 mm monthly rainfall in August in Portimao2
    2 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Portimao9
    9 (Very High) UV index
  • 20°C sea temperature in August in Portimao20
    20°C sea temperature

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The August weather guide for Algarve (Portimao) 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 Portimao in August?

Daytime temperatures usually reach 26°C in Portimao in August with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Portimao in August?

There are normally 11 hours of bright sunshine each day in Portimao in August - that's 81% of daylight hours.

How warm is the sea around Portimao in August?

The average sea temperature around Portimao in August is 20°C.

Does it ever rain in Portimao in August?

There is usually 1 day with some rain in Portimao in August and the average monthly rainfall is 2mm.

Portimao August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:39 19:41
Saturday, 16th August 2025 05:52 19:24
Sunday, 31st August 2025 06:04 19:04

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