Porto Alegre weather live forecast

Today's maximum temperature in Porto Alegre is expected to be 66°F. Select a day from the live weather forecast for Porto Alegre, Brazil for more weather parameters.

5-day weather forecast updated at 04:00 on Sunday 7th September 2025 GMT

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The 5-day weather forecast for Brazil (Porto Alegre) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Porto Alegre weather forecast by day

Below are the detailed weather forecasts for Porto Alegre for the next 5 days.

Porto Alegre weather for Sunday 7th September 2025

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 66°F, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 mph from the east.

  • 66°F maximum temperature66
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 66°F wind chill66
    °F wind chill
  • Little or no wind of 3 mph from the East3
    mph wind from E

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Porto Alegre weather for Monday 8th September 2025

Expect cloudy with some rain in Porto Alegre, Brazil with a maximum temperature of 66°F, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 99% chance of some rain and little or no wind of 2 mph from the east.

  • 66°F maximum temperature66
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 99% chance of some rain99
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 66°F wind chill66
    °F wind chill
  • Little or no wind of 2 mph from the East2
    mph wind from E

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Porto Alegre weather for Tuesday 9th September 2025

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 68°F, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 45% chance of some rain and a light breeze of 4 mph from the west.

  • 68°F maximum temperature68
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 45% chance of some rain45
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 68°F wind chill68
    °F wind chill
  • Light breeze of 4 mph from the West4
    mph wind from W

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Porto Alegre weather for Wednesday 10th September 2025

Expect clear skies in Porto Alegre, Brazil with a maximum temperature of 70°F, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 mph from the south-east.

  • 70°F maximum temperature70
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Clear skies
    clear skies
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Little or no wind of 2 mph from the South-East2
    mph wind from SE

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Porto Alegre weather for Thursday 11th September 2025

Expect scattered clouds in Porto Alegre, Brazil with a maximum temperature of 72°F, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 mph from the south-west.

  • 72°F maximum temperature72
    °F maximum temperature
  • 52°F minimum temperature52
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Little or no wind of 2 mph from the South-West2
    mph wind from SW

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