Porto Alegre weather live forecast

Today's maximum temperature in Porto Alegre is expected to be 84°F. Select a day from the live weather forecast for Porto Alegre, Brazil for more weather parameters.

5-day weather forecast updated at 04:01 on Saturday 17th January 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 Sunday 18th January 2026

Expect isolated thunderstorms in Porto Alegre, Brazil with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a light breeze of 6 mph from the south-east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 72°F minimum temperature72
    °F 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)
  • 58% chance of some rain58
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 6 mph from the South-East6
    mph wind from SE

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Porto Alegre weather for Monday 19th January 2026

Expect sunshine and showers in Porto Alegre, Brazil with a maximum temperature of 77°F, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 37% chance of some rain and a light breeze of 7 mph from the south-east.

  • 77°F maximum temperature77
    °F maximum temperature
  • 66°F minimum temperature66
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 37% chance of some rain37
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 7 mph from the South-East7
    mph wind from SE

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Porto Alegre weather for Tuesday 20th January 2026

Expect scattered clouds in Porto Alegre, Brazil with a maximum temperature of 77°F, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the east.

  • 77°F maximum temperature77
    °F maximum temperature
  • 64°F minimum temperature64
    °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
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 6 mph from the East6
    mph wind from E

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Porto Alegre weather for Wednesday 21st January 2026

Expect scattered clouds in Porto Alegre, Brazil with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 63°F minimum temperature63
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 7 mph from the East7
    mph wind from E

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Porto Alegre weather for Thursday 22nd January 2026

Expect scattered clouds in Porto Alegre, Brazil with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 11+ (Extreme) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 5 mph from the east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 66°F minimum temperature66
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 5 mph from the East5
    mph 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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