Porto Alegre weather live forecast

Today's maximum temperature in Porto Alegre is expected to be 14°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 Saturday 6th 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 Saturday 6th September 2025

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Little or no wind of 5 kph from the South-East5
    kph wind from SE

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Porto Alegre weather for Sunday 7th September 2025

Expect broken clouds in Porto Alegre, Brazil with a maximum temperature of 18°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the east.

  • 18°C maximum temperature18
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Little or no wind of 5 kph from the East5
    kph wind from E

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Porto Alegre weather for Monday 8th September 2025

Expect mostly cloudy with rain in Porto Alegre, Brazil with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 99% chance of some rain and little or no wind of 3 kph from the east.

  • 19°C maximum temperature19
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 99% chance of some rain99
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Little or no wind of 3 kph from the East3
    kph 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 19°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 52% chance of some rain and a light breeze of 7 kph from the west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 52% chance of some rain52
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Light breeze of 7 kph from the West7
    kph 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 21°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.

  • 21°C maximum temperature21
    °C maximum temperature
  • 11°C minimum temperature11
    °C 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 4 kph from the South-East4
    kph wind from SE

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Metric (°C / mm)  |  Imperial (°F / inches)

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