National Weather Service Forecast for: San Juan, Puerto Rico NWS Forecast for San Juan PR
National Weather Service Forecast for: San Juan PR
Issued by: National Weather Service San Juan, PR
Updated: 3:33 am AST Jul 9, 2026

San Juan
 
Today

Today: Isolated showers after noon. Widespread haze. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 17 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
High: 89 °F		 Tonight

Tonight: Widespread haze. Mostly clear, with a low around 79. East wind 13 to 16 mph, with gusts as high as 21 mph.
Low: 79 °F		 Friday

Friday: Isolated showers after noon. Widespread haze. Sunny, with a high near 90. East wind 15 to 20 mph. Chance of precipitation is 10%.
High: 90 °F		 Friday
Night
Friday Night: Isolated showers after midnight. Widespread haze. Mostly clear, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Low: 79 °F		 Saturday

Saturday: Widespread haze. Sunny, with a high near 89. East northeast wind 14 to 18 mph, with gusts as high as 23 mph.
High: 89 °F		 Saturday
Night
Saturday Night: Isolated showers. Widespread haze. Partly cloudy, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Low: 79 °F		 Sunday

Sunday: Widespread haze. Mostly sunny, with a high near 88. East northeast wind around 16 mph, with gusts as high as 21 mph.
High: 88 °F		 Sunday
Night
Sunday Night: Widespread haze. Partly cloudy, with a low around 78. East wind around 11 mph.
Low: 78 °F		 Monday

Monday: Scattered showers. Partly sunny, with a high near 89. East wind 13 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
High: 89 °F
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Heat Advisory
 

Today
 
 Isolated showers after noon. Widespread haze. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 17 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Tonight
 
 Widespread haze. Mostly clear, with a low around 79. East wind 13 to 16 mph, with gusts as high as 21 mph.
Friday
 
 Isolated showers after noon. Widespread haze. Sunny, with a high near 90. East wind 15 to 20 mph. Chance of precipitation is 10%.
Friday Night
 
 Isolated showers after midnight. Widespread haze. Mostly clear, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Saturday
 
 Widespread haze. Sunny, with a high near 89. East northeast wind 14 to 18 mph, with gusts as high as 23 mph.
Saturday Night
 
 Isolated showers. Widespread haze. Partly cloudy, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
 
 Widespread haze. Mostly sunny, with a high near 88. East northeast wind around 16 mph, with gusts as high as 21 mph.
Sunday Night
 
 Widespread haze. Partly cloudy, with a low around 78. East wind around 11 mph.
Monday
 
 Scattered showers. Partly sunny, with a high near 89. East wind 13 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Monday Night
 
 Partly cloudy, with a low around 79.
Tuesday
 
 Mostly sunny, with a high near 90.
Tuesday Night
 
 Mostly clear, with a low around 79.
Wednesday
 
 Mostly sunny, with a high near 89.

 

 

 

Updated: 3:33 am AST Jul 9, 2026   Heat Advisory
 

Today

Today: Isolated showers after noon. Widespread haze. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 17 to 24 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
High: 89 °F		Tonight

Tonight: Widespread haze. Mostly clear, with a low around 79. East wind 13 to 16 mph, with gusts as high as 21 mph.
Low: 79 °F		Friday

Friday: Isolated showers after noon. Widespread haze. Sunny, with a high near 90. East wind 15 to 20 mph. Chance of precipitation is 10%.
High: 90 °F		Friday
Night
Friday Night: Isolated showers after midnight. Widespread haze. Mostly clear, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 10%.
Low: 79 °F		Saturday

Saturday: Widespread haze. Sunny, with a high near 89. East northeast wind 14 to 18 mph, with gusts as high as 23 mph.
High: 89 °F		Saturday
Night
Saturday Night: Isolated showers. Widespread haze. Partly cloudy, with a low around 79. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Low: 79 °F		Sunday

Sunday: Widespread haze. Mostly sunny, with a high near 88. East northeast wind around 16 mph, with gusts as high as 21 mph.
High: 88 °F		Sunday
Night
Sunday Night: Widespread haze. Partly cloudy, with a low around 78. East wind around 11 mph.
Low: 78 °F		Monday

Monday: Scattered showers. Partly sunny, with a high near 89. East wind 13 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
High: 89 °F

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National Weather Service Forecast Details