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.

• Thursday
  8th Jan
  28
  23
  
  6
  7
• Friday
  9th Jan
  29
  23
  
  5
  6
• Saturday
  10th Jan
  27
  24
  
  5
  6
• Sunday
  11th Jan
  28
  24
  
  5
  7
• Monday
  12th Jan
  28
  24
  
  6
  7

5-day weather forecast updated at 04:01 on Thursday 8th January 2026 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 Thursday 8th January 2026

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 30% chance of some rain and a gentle breeze of 16 kph from the north-east.

• 28
  °C maximum temperature
• 23
  °C minimum temperature
• 
  isolated thunderstorms
• 6
  hours of sunshine
• 7
  UV index (High)
• 30
  % chance of some rain
• <2
  mm of rainfall expected
• L
  low heat & humidity
• 16
  kph wind from NE

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San Juan weather for Friday 9th January 2026

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 17 kph from the north-east.

• 29
  °C maximum temperature
• 23
  °C minimum temperature
• 
  isolated thunderstorms
• 5
  hours of sunshine
• 6
  UV index (High)
• 50
  % chance of some rain
• <2
  mm of rainfall expected
• M
  moderate heat & humidity
• 17
  kph wind from NE

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San Juan weather for Saturday 10th January 2026

Expect isolated thunderstorms in San Juan, Puerto Rico with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 61% chance of some rain and a gentle breeze of 18 kph from the north-east.

• 27
  °C maximum temperature
• 24
  °C minimum temperature
• 
  isolated thunderstorms
• 5
  hours of sunshine
• 6
  UV index (High)
• 61
  % chance of some rain
• <10
  mm of rainfall expected
• L
  low heat & humidity
• 18
  kph wind from NE

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San Juan weather for Sunday 11th January 2026

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 46% chance of some rain and a gentle breeze of 18 kph from the east.

• 28
  °C maximum temperature
• 24
  °C minimum temperature
• 
  isolated thunderstorms
• 5
  hours of sunshine
• 7
  UV index (High)
• 46
  % chance of some rain
• <5
  mm of rainfall expected
• L
  low heat & humidity
• 18
  kph wind from E

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San Juan weather for Monday 12th January 2026

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 48% chance of some rain and a gentle breeze of 16 kph from the north-east.

• 28
  °C maximum temperature
• 24
  °C minimum temperature
• 
  isolated thunderstorms
• 6
  hours of sunshine
• 7
  UV index (High)
• 48
  % chance of some rain
• <2
  mm of rainfall expected
• L
  low heat & humidity
• 16
  kph wind from NE

Back to top

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Discount Code

• Save up to £300 on sailings (1 Apr 2026-30 Apr 2027)
• Book online in Marella Cruises sale with myTUI account
• Discount varies on destination. Min 7 nights duration

Show discount code ******WAY

Redeem Marella Cruises discount code >>

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

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