Porto Alegre weather in August 2025

Expect daytime maximum temperatures of 20°C in Porto Alegre, Brazil in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 138 mm of rainfall in the month.

  • 20°C maximum daytime temperature in August in Porto Alegre20
    20°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in August in Porto Alegre16
    16 days with some rainfall
  • 11°C minimum night-time temperature in August in Porto Alegre11
    11°C 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
  • 138 mm monthly rainfall in August in Porto Alegre138
    138 mm 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 / mm)  |  Imperial (°F / inches)

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More about Brazil

How hot is it in Porto Alegre in August?

Daytime temperatures usually reach 20°C in Porto Alegre in August, falling to 11°C 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 138mm.

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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