San Juan weather live forecast

Today's maximum temperature in San Juan is expected to be 28°C. Select a day from the live weather forecast for San Juan, Puerto Rico for more weather parameters.

5-day weather forecast updated at 04:00 on Tuesday 16th December 2025 GMT

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The 5-day weather forecast for Puerto Rico (San Juan) 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 Tuesday 16th December 2025

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 15 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 22% chance of some rain22
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 15 kph from the East15
    kph wind from E

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San Juan weather for Wednesday 17th December 2025

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a gentle breeze of 19 kph from the south-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 31% chance of some rain31
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 19 kph from the South-East19
    kph wind from SE

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San Juan weather for Thursday 18th December 2025

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a moderate breeze of 20 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 41% chance of some rain41
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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San Juan weather for Friday 19th December 2025

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 19 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 25% chance of some rain25
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 19 kph from the East19
    kph wind from E

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San Juan weather for Saturday 20th December 2025

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 45% chance of some rain and a moderate breeze of 20 kph from the east.

  • 28°C maximum temperature28
    °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 7 (High)7
    UV index (High)
  • 45% chance of some rain45
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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  • Destinations across the Med, Caribbean & USA
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Metric (°C / mm)  |  Imperial (°F / inches)

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