Since 2001 providing the latest information on tropical cyclone activity in the Atlantic Basin and the weather conditions in Puerto Rico.

Local Weather Conditions

 

National Weather Service Today's Weather Impact Levels

National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 2:36 pm AST Jan 20, 2021

Hazardous Weather Outlook
Overnight

Overnight: Isolated showers.  Partly cloudy, with a low around 72. East wind around 5 mph.  Chance of precipitation is 10%.
Isolated
Showers
Lo 72 °F
Thursday

Thursday: Isolated showers.  Mostly sunny, with a high near 84. South southeast wind 5 to 8 mph becoming northeast in the afternoon.  Chance of precipitation is 20%.
Isolated
Showers
Hi 84 °F
Thursday
Night
Thursday Night: Isolated showers.  Partly cloudy, with a low around 72. East northeast wind 5 to 8 mph becoming southeast after midnight.  Chance of precipitation is 20%.
Isolated
Showers
Lo 72 °F
Friday

Friday: Scattered showers, mainly before 1pm.  Mostly sunny, with a high near 85. South southeast wind 6 to 9 mph becoming east northeast in the afternoon.  Chance of precipitation is 30%.
Scattered
Showers
Hi 85 °F
Friday
Night
Friday Night: Isolated showers.  Partly cloudy, with a low around 71. East wind 6 to 8 mph.  Chance of precipitation is 20%.
Isolated
Showers
Lo 71 °F
Saturday

Saturday: Isolated showers.  Mostly sunny, with a high near 85. East wind around 7 mph.  Chance of precipitation is 20%.
Isolated
Showers
Hi 85 °F
Saturday
Night
Saturday Night: Partly cloudy, with a low around 72. East northeast wind 5 to 7 mph.
Partly Cloudy
Lo 72 °F
Sunday

Sunday: Mostly sunny, with a high near 84. East northeast wind 5 to 9 mph.
Mostly Sunny
Hi 84 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 71. Northeast wind around 9 mph.
Partly Cloudy
Lo 71 °F

National Weather Service Forecast Details

 

GRLevel3 Radar

  [10/10
GRLevel3 radar from NWS station TJUA

Day 1 rainfall

Day 2 rainfall

Day 3 rainfall

000
AWCA82 TJSJ 202039
RWSPR
PRZ001>013-210845-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
439 PM AST Wed Jan 20 2021

Sunny to partly cloudy skies prevailed across the islands today.
Isolated showers were observed during the afternoon hours over
western Puerto Rico. Maximum temperatures were in the mid 80s in
general. Winds were from the east between 15 to 20 mph.

For tonight, a drier air mass will move across the region and
this should maintain fair weather conditions. Winds will continue
from the east at less than 10 mph. Minimum temperatures are
expected to range from the low 60s across the higher elevations to
the mid 70s across coastal areas. For Thursday afternoon, showers
are expected to develop once again over the western sections of
Puerto Rico.

Across the regional waters, choppy seas of up to 6 feet and winds
between 5 to 15 knots are expected to continue tonight. Seas
between 3 to 5 feet are expected on Thursday. There is a moderate
risk of rip currents across the east, north and southeast beaches
of Puerto Rico, including Culebra and Vieques.

$$

This product is issued around 5 AM and 5 PM each day and weather
conditions may change between issuances. Please verify the status
of any Watches...Warnings or Advisories mentioned in this product.

NWS SJU Office Area Forecast Discussion

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