Weather


San Juan, Puerto Rico

Current Conditions

 
Temp: 85°
Dew Point: 75°
Humidity: 72%
Wind: East 14 mph
Visibility: 10.0 miles
Pressure: 30.04 in. 0
Sky: Scattered Clouds
Heat Index: 93°

 

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Almanac

Average High: 88°

Average Low: 77°

Record high/year: 93° (1988)

Record low/year: 72° (1990)

Sunrise: 5:53 AM

Sunset: 7:05 PM

Detailed History

Sun and Moon

Sunrise: 05:53 AM (AST)

Moon Rise: 09:24 AM (AST)

Sunset: 07:05 PM (AST)

Moon Set: 10:09 PM (AST)

Moon Phase

Today
Jul. 10
Jul. 18
Jul. 25
Aug. 01

 

Local Radar

Local Satellite



Next 12 Hours

 
10  am
1  pm
4  pm
7  pm
10  pm
Rain Showers Rain Showers
Rain Showers Rain Showers
Rain Showers Rain Showers
Clear Clear
Clear Clear
85°
83°
81°
79°
79°

 

Forecast data from the National Digital Forecast Database


5-Day Forecast

Sunday Rain Showers Hi 85° Lo 76° Rain Showers
Monday Rain Showers Hi 85° Lo 76° Rain Showers
Tuesday Clear Hi 85° Lo 76° Clear
Wednesday Clear Hi 85° Lo 76° Clear
Thursday Clear Hi 85° Lo 76° Clear

 

Forecast for San Juan and Vicinity

Updated: 3:23 am AST on July 6, 2008

Today

Partly cloudy early in the morning then becoming variably cloudy. Isolated showers early in the morning...then scattered showers in the late morning and afternoon. Highs 89 lower elevations ranging to 79 higher elevations. East winds 10 to 15 mph. Chance of rain 50 percent.

 

Tonight

Mostly clear. Lows 78 lower elevations ranging to 67 higher elevations. East winds 5 to 15 mph.

 

Monday

Mostly sunny in the morning...then partly cloudy with scattered showers and isolated thunderstorms in the afternoon. Breezy. Highs 89 lower elevations ranging to 79 higher elevations. Northeast winds 15 to 20 mph. Chance of rain 30 percent.

 

Monday Night

Partly cloudy with isolated showers. Lows 78 lower elevations ranging to 67 higher elevations. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

 

Tuesday

Partly cloudy with isolated showers. Highs 89 lower elevations ranging to 79 higher elevations. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

 

Tuesday Night

Partly cloudy. Lows 78 lower elevations ranging to 67 higher elevations.

 

Wednesday

Partly cloudy. Isolated showers in the afternoon. Highs 89 lower elevations ranging to 79 higher elevations. Chance of rain 20 percent.

 

Wednesday Night

Mostly clear. Lows 78 lower elevations ranging to 67 higher elevations.

 

Thursday

Mostly sunny in the morning...then partly cloudy with scattered showers in the afternoon. Highs 89 lower elevations ranging to 79 higher elevations. Chance of rain 40 percent.

 

Thursday Night

Mostly clear. Lows 78 lower elevations ranging to 67 higher elevations.

 

Friday

Mostly sunny with isolated showers in the morning...then partly cloudy with isolated showers and thunderstorms in the afternoon. Highs 89 lower elevations ranging to 79 higher elevations. Chance of rain 20 percent.

 

Friday Night

Partly cloudy with isolated showers. Lows 78 lower elevations ranging to 67 higher elevations. Chance of rain 20 percent.

 

Saturday

Partly cloudy. Isolated showers in the morning...then isolated showers and thunderstorms in the afternoon. Highs 89 lower elevations ranging to 79 higher elevations. Chance of rain 20 percent.

 

 

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: San Juan, San Juan, PR

Updated: 10:22 AM AST

Temperature: 83.5 °F Dew Point: 76 °F Humidity: 77% Wind: ENE at 16.0 mph Pressure: 30.08 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Historical Graphs

Location: APRSWXNET Hato Rey PR US, San Juan, PR

Updated: 10:05 AM AST

Temperature: 86 °F Dew Point: 74 °F Humidity: 68% Wind: ENE at 7 mph Pressure: 30.01 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Historical Graphs

Location: Reparto Metropolitano, San Juan, PR

Updated: 10:22 AM AST

Temperature: 88.2 °F Dew Point: 74 °F Humidity: 64% Wind: ESE at 11.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Historical Graphs

Location: APRSWXNET Rio Piedras PR US, San Juan, PR

Updated: 10:00 AM AST

Temperature: 87 °F Dew Point: 74 °F Humidity: 66% Wind: SSE at 3 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 96 °F Historical Graphs

Location: Rio Piedras, San Juan, PR

Updated: 10:20 AM AST

Temperature: 87.8 °F Dew Point: 75 °F Humidity: 65% Wind: SE at 4.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Historical Graphs

Location: Rio Piedras, San Juan

Updated: 10:20 AM AST

Temperature: 87.8 °F Dew Point: 75 °F Humidity: 65% Wind: SE at 4.0 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Historical Graphs

Location: San Juan, 00924, San Juan, PR

Updated: 10:22 AM AST

Temperature: 84.3 °F Dew Point: 72 °F Humidity: 66% Wind: East at 15.0 mph Pressure: 29.98 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Historical Graphs

Location: Colinas de Fairview, Trujillo Alto, PR

Updated: 10:22 AM AST

Temperature: 88.5 °F Dew Point: 70 °F Humidity: 55% Wind: NE at 10.5 mph Pressure: 30.05 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Historical Graphs

Location: Puente Teodoro Moscoso, Carolina, PR

Updated: 10:20 AM AST

Temperature: 84.1 °F Dew Point: 73 °F Humidity: 69% Wind: ENE at 21.0 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Historical Graphs

Location: Loiza, PR. Live Weather, Loiza, PR

Updated: 10:20 AM AST

Temperature: 92.3 °F Dew Point: 76 °F Humidity: 59% Wind: NE at 5.8 mph Pressure: 30.03 in Hourly Precipitation: 0.00 in Heat Index: 105 °F Historical Graphs

Location: APRSWXNET Caguas PR US, Caguas, PR

Updated: 10:00 AM AST

Temperature: 83 °F Dew Point: 77 °F Humidity: 83% Wind: ESE at 5 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Historical Graphs

MSN Maps of:

Temperature Dew Point Humidity Wind Pressure Hourly Precipitation -

NWS Forecaster Discussion




190 
fxca62 tjsj 061043 
afdsju 


Area forecast discussion 
National Weather Service San Juan PR 
643 am AST sun Jul 6 2008 


Synopsis...surface high pressure centered across the 
northeastern Atlantic extends southwestward to the eastern 
Seaboard of the United States. This system is expected to prevail 
near stationary for the next few days...creating moderate to 
fresh trade wind flow over the forecast area. 


At middle levels...high pressure located across the central Atlantic will 
dominate the local area for the next few days. Then...this 
feature is expected to move to the west...but as a frontal 
boundary exits the eastern part of the United States...it will 
move back to the central Atlantic by middle week. 


At upper levels...upper trough extends from the central Atlantic 
southwestward to the north of the local area. This system is 
expected to slowly push east northeast for the next few 
days...while a high builds across the northern Leeward Islands by 
middle week. 






&& 


Discussion...isolated to scattered showers have been affecting 
the eastern and northeastern sections of Puerto Rico since 
midnight. However...the rainfall amounts estimated by weather 
Doppler radar ranged from a trace to three quarter of an inch over 
the affected places the past three hours. 


Showers this morning will continue to affect the eastern coasts of 
Puerto Rico as well as parts of the local islands and coastal 
waters as low level moisture pushes westward and across the local 
islands through late this afternoon...before a relatively dry air 
and stable atmosphere conditions move to our area this evening. 
However...patchy low level moisture once again returns by Monday 
morning...increasing the chances for variably cloudy skies with 
scattered showers and even a thunderstorm to affect the eastern 
coasts of Puerto Rico and parts of the local islands between dawn 
and late Monday morning. Then...this moisture will move to the 
west half of Puerto Rico by noon...and in combination with local 
island effects and daytime heating...you will have as a result... 
scattered to localized heavy shower and isolated thunderstorm 
activity mainly across the northwest portion of the island. This activity 
may result in some minor flooding across 
roadways...underpasses...poor drainage and low lying areas as well 
as urban localities. 


Looking ahead for the upcoming week...between late Tuesday and 
Wednesday...Tropical Storm Bertha should be passing well north of 
the island. However...we are keeping close attention to this 
system as it continues evolving across the tropical Atlantic. We will 
maintain adjusting the weather grids as many times we think is 
necessary to keep the public inform at all times with the latest 
data available. 


As of 5 am AST Sunday...the center of Tropical Storm Bertha was 
located near latitude 17.3 north...longitude 43.2 west or about 1310 
miles...2110 km...east of the northern Leeward Islands. 


Bertha is moving toward the west near 22 miles per hour...35 km/hr. A general 
west-northwestward motion with a gradual decrease in forward speed 
is expected during the next couple of days...as Bertha remains over 
the waters of the central tropical Atlantic. It is much too early 
to determine if Bertha will eventually affect any land areas. 


Maximum sustained winds are near 50 miles per hour...85 km/hr...with higher 
gusts. Gradual strengthening is forecast during the next couple of 
days. 






&& 


Aviation...VFR conditions are expected to prevail across the 
local taf sites for most of the time for the next 24 hours. 


&& 


Preliminary point temps/pops... 
sju 88 78 88 78 / 50 10 30 20 
stt 86 78 86 78 / 40 20 30 20 


&& 


Sju watches/warnings/advisories... 
PR...none. 
Vi...none. 
&& 


$$ 


10/17/ 










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