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National Weather Service Today's Weather Impact Levels

 

National Weather Service Five Day Forecast for: San Juan, Puerto Rico  

Updated: 7:52 pm AST Aug 19, 2018 

Hazardous Weather Outlook
Short Term Forecast
 

Today

Today: Scattered showers.  Mostly sunny, with a high near 90. East wind 11 to 16 mph.  Chance of precipitation is 40%.
Scattered
Showers
Tonight

Tonight: Scattered showers, mainly after midnight.  Partly cloudy, with a low around 78. East southeast wind 9 to 11 mph.  Chance of precipitation is 40%.
Scattered
Showers
Tuesday

Tuesday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 90. East northeast wind 10 to 17 mph.  Chance of precipitation is 40%.
Scattered
Showers
Tuesday
Night
Tuesday Night: Scattered showers.  Partly cloudy, with a low around 79. East southeast wind 9 to 11 mph.  Chance of precipitation is 30%.
Scattered
Showers
Wednesday

Wednesday: Scattered showers.  Mostly sunny, with a high near 90. East wind 13 to 18 mph.  Chance of precipitation is 40%.
Scattered
Showers
Wednesday
Night
Wednesday Night: Scattered showers.  Partly cloudy, with a low around 79. East wind 10 to 14 mph.  Chance of precipitation is 40%.
Scattered
Showers
Thursday

Thursday: Mostly sunny, with a high near 91. East wind 14 to 17 mph.
Mostly Sunny
Thursday
Night
Thursday Night: Scattered showers.  Partly cloudy, with a low around 78. East wind around 10 mph.  Chance of precipitation is 30%.
Scattered
Showers
Friday

Friday: Scattered showers.  Mostly sunny, with a high near 88. East wind 11 to 13 mph.  Chance of precipitation is 30%.
Scattered
Showers
Hi 90 °FLo 78 °FHi 90 °FLo 79 °FHi 90 °FLo 79 °FHi 91 °FLo 78 °FHi 88 °F

National Weather Service Forecast Details

 

 

 

 

 

Caribbean Sea Satellite

 

 

GRLevel3 Radar

  [10/10
GRLevel3 radar from NWS station TJUA

 

NWS San Juan TJUA Doppler Radar

 

TDWR TSJU RADAR

 

Weather Summary for Puerto Rico

000
AWCA82 TJSJ 200847
RWSPR

Weather Summary for Puerto Rico
National Weather Service San Juan PR
447 AM AST Mon Aug 20 2018

Variably cloudy skies persisted across the region overnight as low
to mid level clouds with occasional passing trade winds showers
moved across the local waters, and the north and east coastal
sections of the island. Most of the shower activity over land
was of short duration and of light to moderate intensity. Winds
were light and variable in most areas over land. Early morning
low temperatures were in the high 70s to near 80 degrees along
coastal areas and in the low to mid 70 in higher elevations.

Low level moisture trailing a tropical wave which was now over
Hispaniola, will continue to affect the region today. This along
with local and diurnal effects will support shower and
thunderstorm development mainly across parts of the interior and
west sections of Puerto Rico. The prevailing east southeast wind
flow should later steer the showers and thunderstorm activity
towards the northwestern quadrant of the island. Winds will be 10
to 15 mph with sea breeze variations and occasionally higher gusts
along the coastal areas. Highs will continue to reach the high
80s to low 90s along the coastal areas.

Across the regional waters, seas up to 5 feet are expected across
most of the local waters, except for coastal waters of southwestern
Puerto Rico where seas around 3 feet are expected. Winds will be
15 to 20 knots in some of the more exposed waters today, so
mariners should exercise caution. For the beach goers, there is a
moderate risk of rip currents for the beaches of northern and
southeastern Puerto Rico including around Guanica and the
southeast half of 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

 

 

Tropical Weather Outlook

 

 

 

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