Porto Alegre weather in August 2025

Expect 68°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Porto Alegre in August. Check more long-term weather averages for Porto Alegre in August before you book your next holiday to Brazil in 2025/2026.

  • 68°F maximum daytime temperature in August in Porto Alegre68
    68°F max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in August in Porto Alegre16
    16 days with some rainfall
  • 52°F minimum night-time temperature in August in Porto Alegre52
    52°F min night temperature
  • 11 hours of daylight per day in August in Porto Alegre11
    11 hours of daylight per day
  • No heat & humidity in August in Porto Alegre0
    No heat & humidity
  • 5.4 inches monthly rainfall in August in Porto Alegre5.4
    5.4 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Porto Alegre5
    5 (Moderate) UV index

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The August weather guide for Brazil (Porto Alegre) 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)  |  Imperial (°F)

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How hot is it in Porto Alegre in August?

Daytime temperatures usually reach 68°F in Porto Alegre in August, falling to 52°F at night.

How sunny is it in Porto Alegre in August?

There are normally 5 hours of bright sunshine each day in Porto Alegre in August - that's 44% of daylight hours.

Does it rain in Porto Alegre in August?

There are usually 16 days with some rain in Porto Alegre in August and the average monthly rainfall is 5.4 inches.

Porto Alegre August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 07:10 17:53
Saturday, 16th August 2025 06:57 18:01
Sunday, 31st August 2025 06:41 18:09

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