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: 6:25 pm AST Aug 6, 2020

Hazardous Weather Outlook
Tonight

Tonight: Isolated showers after midnight.  Mostly clear, with a low around 77. East southeast wind 7 to 11 mph.  Chance of precipitation is 20%.
Clear then
Isolated
Showers
Lo 77 °F
Friday

Friday: Isolated showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm.  Mostly sunny, with a high near 91. East wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.
Isolated
Showers then
Showers
Likely
Hi 91 °F
Friday
Night
Friday Night: Isolated showers.  Partly cloudy, with a low around 77. East wind around 11 mph.  Chance of precipitation is 20%.
Isolated
Showers

Lo 77 °F
Saturday

Saturday: Scattered showers, mainly before noon.  Mostly sunny, with a high near 90. East wind 15 to 18 mph, with gusts as high as 23 mph.  Chance of precipitation is 30%.
Scattered
Showers

Hi 90 °F
Saturday
Night
Saturday Night: Isolated showers.  Partly cloudy, with a low around 78. East wind 11 to 14 mph.  Chance of precipitation is 20%.
Isolated
Showers

Lo 78 °F
Sunday

Sunday: Isolated showers.  Mostly sunny, with a high near 90. East wind 13 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 10%.
Isolated
Showers

Hi 90 °F
Sunday
Night
Sunday Night: Partly cloudy, with a low around 77. East wind 8 to 11 mph.
Partly Cloudy

Lo 77 °F
Monday

Monday: Mostly sunny, with a high near 89. East northeast wind 11 to 15 mph.
Mostly Sunny

Hi 89 °F
Monday
Night
Monday Night: Partly cloudy, with a low around 77. East southeast wind 8 to 11 mph.
Partly Cloudy

Lo 77 °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 062142
RWSPR
PRZ001>013-070945-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
542 PM AST Thu Aug 6 2020

A few showers with up to half an inch fell over the southeast
coastal hills of Puerto Rico this morning. A streamer formed
later in the day from Trujillo Alto to Toa Alta that carried
almost half an inch in its core. Then after about 1 PM AST showers
and a few thunderstorms formed in northwest Puerto Rico that left
over 1 inch in a considerable area and over 2 inches in parts of
San Sebastian and Moca municipalities. But, by late afternoon all
but the northwest tip of Puerto Rico had mostly sunny skies. Winds
were 10 to 20 mph in sea breezes, strongest on the north and
south coasts, flow was east southeasterly. San Juan had a gusts of
up to 28 mph. Temperatures ranged from the lower 90s in select
lower elevations to the upper 70s in the higher mountains. It
reached 90 degrees in San Juan and in San Sebastian just before
the rain began there, and 92 degrees in Guanica.

A slot of dry air is over Puerto Rico and will continue through
much of the night. A tropical wave will move into the area during
the early morning hours from the southeast, spreading moisture,
clouds and showers with scattered thunderstorms across the island
during the day. Some urban and small stream flooding is expected
on Friday in the northwest and central portions of the
island. These showers will be enhanced by an upper level trough
and better available moisture. Periods of moderate to heavy
showers across the San Juan Metro area are also expected. Lows
tonight will range from the lower 80s on the windward coasts to
the upper 60s in the higher mountain valleys. Maximum
temperatures on Friday will range from the low 90s in the lower
elevations to the upper 70s in the highest mountains. Winds will
be east-southeast at 10 to 20 mph.


Across the local waters, seas between 2 to 5 feet with winds up to
15 knots are expected although winds of 15 to 20 knots are
expected over the coastal waters of north Puerto Rico. There will
be a moderate rip current risk for the north-central coast of
Puerto Rico on Friday.

$$

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.

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