Porto Alegre weather live forecast

Today's maximum temperature in Porto Alegre is expected to be 28°C. 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 Thursday 19th March 2026 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 Thursday 19th March 2026

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

  • 28°C maximum temperature28
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the South-West16
    kph wind from SW

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Porto Alegre weather for Friday 20th March 2026

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 23°C minimum temperature23
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 24 kph from the East24
    kph wind from E

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Porto Alegre weather for Saturday 21st March 2026

Expect scattered clouds in Porto Alegre, Brazil with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the east.

  • 33°C maximum temperature33
    °C maximum temperature
  • 22°C minimum temperature22
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 17 kph from the East17
    kph wind from E

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Porto Alegre weather for Sunday 22nd March 2026

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 16 kph from the south.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 60% chance of some rain60
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the South16
    kph wind from S

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Porto Alegre weather for Monday 23rd March 2026

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and a gentle breeze of 16 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 16% chance of some rain16
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the East16
    kph wind from E

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  • Find last minute deals or early bird discounts
  • Filter offers by price, destination, ship & departure point
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Metric (°C / mm)  |  Imperial (°F / inches)

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