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: 5:26 pm AST Sep 20, 2020

Rip Current Statement
High Surf Advisory
Hazardous Weather Outlook
Tonight

Tonight: Isolated showers before 3am.  Mostly clear, with a low around 80. South southwest wind 3 to 5 mph.  Chance of precipitation is 10%.
Isolated
Showers

Lo 80 °F
Monday

Monday: Scattered showers after noon.  Mostly sunny, with a high near 91. West southwest wind 5 to 8 mph becoming northeast in the afternoon.  Chance of precipitation is 30%.
Sunny then
Scattered
Showers
Hi 91 °F
Monday
Night
Monday Night: Isolated showers.  Partly cloudy, with a low around 81. Light and variable wind becoming south around 5 mph after midnight.  Chance of precipitation is 20%.
Isolated
Showers

Lo 81 °F
Tuesday

Tuesday: Scattered showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 93. Heat index values as high as 103. South southeast wind 6 to 8 mph.  Chance of precipitation is 60%.
Showers
Likely

Hi 93 °F
Tuesday
Night
Tuesday Night: Scattered showers.  Partly cloudy, with a low around 79. South wind around 6 mph.  Chance of precipitation is 40%.
Scattered
Showers

Lo 79 °F
Wednesday

Wednesday: Scattered showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 92. East southeast wind 6 to 8 mph.  Chance of precipitation is 40%.
Scattered
Showers

Hi 92 °F
Wednesday
Night
Wednesday Night: Scattered showers.  Partly cloudy, with a low around 80. South southeast wind around 6 mph.  Chance of precipitation is 30%.
Scattered
Showers

Lo 80 °F
Thursday

Thursday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 92. South wind around 6 mph becoming northeast in the afternoon.  Chance of precipitation is 50%.
Mostly Sunny
then
Scattered
Showers
Hi 92 °F
Thursday
Night
Thursday Night: Scattered showers.  Partly cloudy, with a low around 78. East northeast wind around 6 mph becoming south after midnight.  Chance of precipitation is 30%.
Scattered
Showers

Lo 78 °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 202139
RWSPR
PRZ001>013-210945-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
539 PM AST Sun Sep 20 2020

Skies were partly cloudy today. Winds were variable with some sea
breezes and generally less than 10 mph. Some showers formed late
in the afternoon over southern Trujillo Alto and then between
Lares and Morovis. Amounts were generally less than one half inch.
Showers were continuing in the north central portion of the
island as of 5 PM AST. Highs for the day ranged from 93 in Caguas
and 92 in Anasco and Guanica to the mid 80s in the lower
mountains. San Juan had a high of 90 degrees.

Showers will taper off overnight and only isolated showers are
expected--mainly over the local waters. Winds will be less than 10
mph in land breezes tonight. Overnight lows will range from the
upper 70s in the lower elevations to the mid 60s in the highest
mountain valleys. Tomorrow, scattered showers are expected,
mainly north of the Cordillera Central. Winds will be 6 to 12 mph
mostly in sea breezes. Highs will range from the mid 90s in some
interior locations to the lower 80s in the higher mountains.

Hurricane Teddy continues to send strong northeasterly swell
into the area. Seas of 8 to 10 feet are expected in the Atlantic
waters. These swell will continue to flow through the Atlantic
and into the local passages Monday. Seas will decrease on Monday
and small craft advisories will likely come down then. For
tonight, surf will be high and there will be a high risk of rip
currents for coasts with northeast exposure. For duration and
strength of these please refer to the latest Coastal Hazard
Message (CFWSJU) and Marine Weather Message (MWWSJU) issued by the
WFO San Juan 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.

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