Porto Alegre weather live forecast

Today's maximum temperature in Porto Alegre is expected to be 73°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 17th August 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 17th August 2025

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 73°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-east.

  • 73°F maximum temperature73
    °F maximum temperature
  • 57°F minimum temperature57
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 73°F wind chill73
    °F wind chill
  • Gentle breeze of 9 mph from the South-East9
    mph wind from SE

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Porto Alegre weather for Monday 18th August 2025

Expect mostly cloudy with light rain in Porto Alegre, Brazil with a maximum temperature of 72°F, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 10 mph from the south-east.

  • 72°F maximum temperature72
    °F maximum temperature
  • 57°F minimum temperature57
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 21% chance of some rain21
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 72°F wind chill72
    °F wind chill
  • Gentle breeze of 10 mph from the South-East10
    mph wind from SE

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Porto Alegre weather for Tuesday 19th August 2025

Expect mostly cloudy with light rain in Porto Alegre, Brazil with a maximum temperature of 73°F, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 12 mph from the east.

  • 73°F maximum temperature73
    °F maximum temperature
  • 61°F minimum temperature61
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 57% chance of some rain57
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 12 mph from the East12
    mph wind from E

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Porto Alegre weather for Wednesday 20th August 2025

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 75°F, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 20-30 mm of rainfall expected with 47% chance of some rain and a fresh breeze of 18 mph from the north-west.

  • 75°F maximum temperature75
    °F maximum temperature
  • 63°F minimum temperature63
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 47% chance of some rain47
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • 75°F wind chill75
    °F wind chill
  • Fresh breeze of 18 mph from the North-West18
    mph wind from NW

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Porto Alegre weather for Thursday 21st August 2025

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 73°F, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a gentle breeze of 10 mph from the north-west.

  • 73°F maximum temperature73
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 13% chance of some rain13
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 10 mph from the North-West10
    mph wind from NW

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