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: 3:57 pm AST Jun 4, 2023

Hazardous Weather Outlook
Excessive Heat Watch
Tonight

Tonight: Clear, with a low around 79. South southeast wind 7 to 9 mph.
Clear

Lo 79 °F
Monday

Monday: Isolated showers between noon and 3pm.  Widespread haze. Sunny, with a high near 94. Heat index values as high as 108. South southeast wind 11 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 10%.
Haze then
Isolated
Showers
Hi 94 °F
Monday
Night
Monday Night: Widespread haze. Clear, with a low around 80. South southeast wind 6 to 8 mph.
Haze

Lo 80 °F
Tuesday

Tuesday: Widespread haze. Sunny and hot, with a high near 95. Heat index values as high as 108. Southeast wind 8 to 16 mph.
Haze

Hi 95 °F
Tuesday
Night
Tuesday Night: Isolated showers.  Partly cloudy, with a low around 80. Southeast wind 5 to 7 mph.  Chance of precipitation is 10%.
Isolated
Showers
Lo 80 °F
Wednesday

Wednesday: Isolated showers after noon.  Sunny, with a high near 93. East southeast wind 9 to 17 mph, with gusts as high as 23 mph.  Chance of precipitation is 10%.
Sunny then
Isolated
Showers
Hi 93 °F
Wednesday
Night
Wednesday Night: Widespread haze. Clear, with a low around 81. East southeast wind 6 to 8 mph.
Haze

Lo 81 °F
Thursday

Thursday: Widespread haze before noon. Sunny, with a high near 92. East southeast wind 13 to 21 mph, with gusts as high as 26 mph.
Haze then
Mostly Sunny
Hi 92 °F
Thursday
Night
Thursday Night: Partly cloudy, with a low around 80. East southeast wind 6 to 9 mph.
Partly Cloudy

Lo 80 °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 312152
RWSPR
PRZ001>013-011000-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
552 PM AST Wed May 31 2023

It was mostly sunny in Puerto Rico, Vieques and Culebra today.
Showers were generally few and confined to the northwest sector
and the southeast coast. Rainfall amounts of 1 to 1.5 inches were
seen in a fairly narrow line from San Sebastian to the borders of
Quebradillas and Isabela. Amounts of 4 tenths of an inch were seen
in Ceiba and Naguabo, but most areas had but a few hundredths.
With mostly sunny skies in some areas, temperatures soared. Highs
of 96 and 94 were seen in Arecibo and Vega Baja near the coast and
highs in the lower 90s were seen in Culebra, San Juan, the
Culebrinas River Valley, San German and Guanica. Winds on the
north coast, where temperatures were warmest, were generally less
than 12 mph. Winds on the south coast ranged from 15 to 20 mph
with gusts from 20 to 30 mph.

Southeast winds will continue overnight and will bring scattered
showers to the southeast coast of Puerto Rico later tonight.
Showers in the northwest are expected to dissipate before 9 PM
AST, but may reappear the the surrounding waters for a little
longer. Rain amounts tonight are expected to be minimal. Southeast
winds will be similar to today and generally stronger on the
south coast. Although there may be a few more showers,
temperatures are also expected to be warmer on Thursday and climb
somewhat over the weekend and Monday. It is likely heat advisories
will be issued. Tonight`s lows will range from the mid 60s to
around 80 degrees. Highs tomorrow will range from 80 degrees in
the highest mountains to the mid 90s on the northern coast.

Across the local waters, mariners can expect winds to be east
southeast to southeast at 10 to 15 knots. Some higher gusts near
shore should be expected. Seas will be between 2 and 4 feet except
1 to 3 feet in sheltered areas.

$$

This is the last Weather Summary for Puerto Rico. To stay updated
on the weather in Puerto Rico, please check the Area Forecast
Discussion (AFDSJU) and the Hazardous Weather Outlook (HWOSJU).
Much of this information will be included there.

NWS SJU Office Area Forecast Discussion

Saharan Air Layer

Wind Shear Tendency

Sea Surface Temperatures

Sea Surface Temperatures Anomalies