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: 3:55 am AST Aug 15, 2022

Heat Advisory
Hazardous Weather Outlook
Overnight

Overnight: Scattered showers.  Mostly cloudy, with a low around 78. Light south southeast wind.  Chance of precipitation is 40%.
Scattered
Showers
Lo 78 °F
Monday

Monday: Scattered showers before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then scattered showers and thunderstorms after 1pm.  Partly sunny, with a high near 91. Heat index values as high as 105. Light southeast wind increasing to 8 to 13 mph in the morning.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
Hi 91 °F
Monday
Night
Monday Night: Scattered showers, mainly after 10pm.  Partly cloudy, with a low around 78. South southeast wind 5 to 7 mph.  Chance of precipitation is 30%.
Scattered
Showers
Lo 78 °F
Tuesday

Tuesday: Scattered showers, mainly after 1pm.  Mostly sunny, with a high near 92. Heat index values as high as 106. East wind 5 to 14 mph.  Chance of precipitation is 40%.
Scattered
Showers
Hi 92 °F
Tuesday
Night
Tuesday Night: Scattered showers, mainly before 7pm.  Widespread haze. Mostly clear, with a low around 79. East southeast wind 6 to 9 mph.  Chance of precipitation is 30%.
Scattered
Showers
Lo 79 °F
Wednesday

Wednesday: Scattered showers, mainly after 1pm.  Widespread haze before 1pm. Mostly sunny, with a high near 89. East northeast wind 5 to 14 mph.  Chance of precipitation is 30%.
Scattered
Showers
Hi 89 °F
Wednesday
Night
Wednesday Night: Scattered showers, mainly before 7pm.  Widespread haze after 7pm. Mostly clear, with a low around 79. East wind 7 to 10 mph.  Chance of precipitation is 30%.
Scattered
Showers then
Haze
Lo 79 °F
Thursday

Thursday: Scattered showers, mainly before 1pm.  Partly sunny, with a high near 88. East wind 9 to 15 mph.  Chance of precipitation is 50%.
Scattered
Showers
Hi 88 °F
Thursday
Night
Thursday Night: Scattered showers, mainly after 7pm.  Mostly cloudy, with a low around 79. East wind around 10 mph.  Chance of precipitation is 50%.
Scattered
Showers
Lo 79 °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 142142 CCA
RWSPR
PRZ001>013-151200-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
520 PM AST Sat Aug 14 2022

Fair weather conditions under sunny to partly cloudy skies prevailed
in the morning. Showers and thunderstorms were observed across the
interior and western sections of Puerto Rico in the afternoon.
Estimated rainfall totals exceeded 2 inches across isolated areas.
Daytime maximum temperatures ranged from the upper 70s across the
higher elevations, to the low 90s across the lower elevations. Heat
index values reached 107 to 111 in some urban areas along the
coasts. Winds were generally from the east to northeast at 10 to 15
mph with gusts up to 20 mph and sea breeze variations.

An approaching tropical wave will cause a gradual increase in
moisture and shower activity tonight into Monday morning. Most of
the shower activity tonight is expected to stay over the local
waters, but scattered to locally numerous showers are forecast
across eastern Puerto Rico, while western Puerto Rico is forecast to
observe mainly fair weather tonight. The overnight low temperatures
will be in the upper 70s to low 80s across the lower elevations,
while the higher elevations will observe overnight lows in the upper
60s to mid 70s. Winds will be at around 10 mph or less, but may be
gusty near the showers.

Seas and winds will remain under 4 feet and 15 knots or lighter,
respectively. There may be locally higher winds and seas near the
showers and thunderstorms. Most north and east-facing beaches have a
moderate risk of rip currents.

$$

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

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Wind Shear Tendency

Sea Surface Temperatures

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