Olhao weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Olhao in August. Check more long-term weather averages for Olhao in August before you book your next holiday to Algarve in 2025/2026.

  • 29°C maximum daytime temperature in August in Olhao29
    29°C max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in August in Olhao1
    1 day with some rainfall
  • 17°C minimum night-time temperature in August in Olhao17
    17°C min night temperature
  • 14 hours of daylight per day in August in Olhao14
    14 hours of daylight per day
  • Moderate heat & humidity in August in OlhaoM
    Moderate heat & humidity
  • 3 mm monthly rainfall in August in Olhao3
    3 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Olhao9
    9 (Very High) UV index
  • 21°C sea temperature in August in Olhao21
    21°C sea temperature

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

Daytime temperatures usually reach 29°C in Olhao in August with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Olhao in August?

There are normally 11 hours of bright sunshine each day in Olhao in August - that's 83% of daylight hours.

How warm is the sea around Olhao in August?

The average sea temperature around Olhao in August is 21°C.

Does it ever rain in Olhao in August?

There is usually 1 day with some rain in Olhao in August and the average monthly rainfall is 3mm.

Olhao August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:37 19:38
Saturday, 16th August 2025 05:49 19:22
Sunday, 31st August 2025 06:01 19:01

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