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

Click on the county or coastal water zone of interest to get the latest forecast from the National Weather Service.


National Weather Service Today's Weather Impact Levels


National Weather Service Forecast for: San Juan, Puerto Rico  


National Weather Service Forecast Details


GRLevel3 Radar

GRLevel3 radar from NWS station TJUA

Day 1 rainfall

Day 2 rainfall

Day 3 rainfall

AWCA82 TJSJ 152112

Weather Summary for Puerto Rico
National Weather Service San Juan PR
512 PM AST Thu Apr 15 2021

An overall dry air mass lingered across the region today with mostly
sunny skies and fair weather conditions prevailing over much of the
islands. The exception was over the central interior of Puerto Rico
where some clouds and a few very light afternoon showers developed.
No significant rainfall was observed or reported so far today. Daytime
high temperatures were in the low to mid 80s along the coastal areas
and winds were generally from the northeast between 5 to 15 mph with
sea breeze variations.

Skies will be mostly clear to partly cloudy skies during the overnight
and early morning hours with limited or no shower activity expected
to affect the islands. Low temperatures will be from the high 50s to
low 60s across the higher elevations and in the low 70s across coastal
areas. Winds will be calm to light and variable overnight. For the
rest of the day on Friday, expect an increase in moisture across
the region during the late afternoon as fragments from an old frontal
boundary returns to the region as winds become more southeasterly.
This in turn will aid in the a development of afternoon showers
activity over portions of the islands.

Across the regional waters, seas will range between 1 to 5 feet
in general and winds between 10 to 15 knots from the northeast are
expected overnight. There is a moderate risk of rip currents for
the northern beaches of Puerto Rico.


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

Saharan Air Layer

Wind Shear Tendency

Sea Surface Temperatures

Sea Surface Temperatures Anomalies

Global Sea Surface Temperatures Anomalies