San Juan weather forecast

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Last updated at 04:02 on Saturday 31st July 2021 GMT

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The 5-day weather forecast for San Juan, Puerto Rico is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

San Juan weather forecast by day

Below are the detailed weather forecasts for San Juan for the next 5 days.

San Juan weather for Saturday 31st July 2021

Below is the San Juan weather forecast for Saturday 31st July 2021. Expect scattered clouds in San Juan, Puerto Rico with a maximum temperature of 30°C, moderate 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 moderate breeze of 25 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °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
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 25 kph from the East25
    kph wind from E

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San Juan weather for Sunday 1st August 2021

Below is the San Juan weather forecast for Sunday 1st August 2021. Expect scattered clouds in San Juan, Puerto Rico with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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San Juan weather for Monday 2nd August 2021

Below is the San Juan weather forecast for Monday 2nd August 2021. Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 5-10 mm of rainfall expected with 50% chance of some rain and a moderate breeze of 20 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 50% chance of some rain50
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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San Juan weather for Tuesday 3rd August 2021

Below is the San Juan weather forecast for Tuesday 3rd August 2021. Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a moderate breeze of 22 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 78% chance of some rain78
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 22 kph from the East22
    kph wind from E

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San Juan weather for Wednesday 4th August 2021

Below is the San Juan weather forecast for Wednesday 4th August 2021. Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a moderate breeze of 25 kph from the east.

  • 29°C maximum temperature29
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 75% chance of some rain75
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 25 kph from the East25
    kph wind from E

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

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