October 2013 Climate Report for Puerto Rico and the U.S. Virgin Islands

Highlights October 2013

New Records for October 2013

San Juan

Date New Record Previous Record
October 2013  October 2013 ended as the fifth warmest October on record with 83.8 °F.  October 2009 continues to be the warmest October on record with 84.4°F.

Saint Croix   

Date New Record Previous Record
October 2013   October 2013 ended as the second warmest October on record with 83.5°F.  October 1972 continues to be the warmest October on record with 84.3°F.

Saint Thomas

Date New Record Previous Record
 October 2013 October 2013 ended as the sixth driest October on record with 2.28".      October 1953 continues to be the driest October on record with 1.78".

October 2013 Statistics

 Average October Temperatures/Precipitation (NCDC 1981-2010 averages):

  San Juan Saint Thomas Saint Croix
High 88.4°F 88.8°F 87.8°F
Low 76.9°F 76.8°F 76.4°F
Avg. T 82.6°F 82.8°F 82.1°F
Pcpn. 5.59’’ 5.42’’ 5.25’’

  October 2013 Observations:

  San Juan Saint Thomas Saint Croix
High 89.9°F(+1.5°F) 89.1°F(+0.3°F)
89.8°F(+2.0°F)
Low 77.6°F(+0.7°F) 78.9°F(+2.1°F) 77.1°F(+0.7°F)
Avg. T 83.8°F(+1.2°F) 84.0°F(+1.2°F) 83.5°F(+1.4°F)
Pcpn. 3.24" (-2.35")  2.28" (-3.14")  4.72" (-0.53") 

October 2013 Extremes:

  San Juan Saint Thomas Saint Croix
High 93°F October 15th, 9th and 4th   93°F October 1st   91°F October 28th, 26th and 24th 
Low  75°F October 31st and 5th  75°F October 31st 74°F October 31st  

Monthly Summary  

    Overall, October 2013 can be described as a dry and hot month with precipitation deficits and above normal temperatures across much of the local islands.  Locally induced shower and thunderstorm activity were noted across western portions of Puerto Rico most of October’s afternoons. In fact, the northwestern quadrant of Puerto Rico was the only area with normal to above normal rainfall totals.  A few weak tropical waves/easterly disturbances were noted across the area this month, but with minimal associated rainfall totals.

Rainfall Accumulation

 

Figure A – Graphical Display of precipitation for October 2013 across Puerto Rico and the U.S. Virgin Islands derived from a combination of USGS rain gage sensors and radar data

October Historical Statistics              

Highest October Temperatures on record:

San Juan Saint Thomas Saint Croix
98°F October 9th, 1981 97°F October 14th, 1994 98°F October 1st, 1972
97°F October 13th, 1987 97°F October 13th, 1994 97°F October 11th, 1995
97°F October 12th,1987 97°F October 15th, 1993 95°F October 4th, 1972

Lowest October Temperatures on record:

San Juan Saint Thomas Saint Croix
67°F October 20th, 1959 66°F October 29th, 2007 65°F October 23rd, 1983
68°F October 30th, 2001 66°F October 28th, 2007 65°F October 22nd, 1983
68°F October 26th,1961 66°F October 27th, 2007 65°F October 31st, 1975

Wettest Octobers:

San Juan Saint Thomas Saint Croix
15.06" 1970 16.20" 2010 16.19" 1977
12.15" 1927 12.49" 2005 12.95" 1990
11.94" 2005 12.45" 1974 11.79" 1954

Driest Octobers:

San Juan Saint Thomas Saint Croix
1.18" 1979 1.95" 2011 1.06" 1964
1.61" 1915 2.00" 1988 1.11" 2002
1.63" 1963 2.21"  1979 1.23" 1960

Decadal October Observations for San Juan, Puerto Rico

  2010-2013 2000’s 1990’s 1980’s 1970’s 1960’s
High 89.0°F 88.2°F 88.6°F 89.2°F 88.3°F 87.5°F
Low 77.1°F 76.4°F 76.1°F 75.5°F 76.4°F 74.2°F
Avg. T 83.0°F 82.3°F 82.4°F 82.4°F 82.4°F 80.8°F
Pcpn. 5.32" 6.20" 4.44’’ 5.58’’ 6.29’’ 4.85’’

Looking ahead toward the month of November

Click on the image to enlarge

 

   Normal Temperatures

Maximum Temperatures Minimum Temperatures

Caribbean Climate Outlook for November-December-January (NDJ) 

NDJ rainfall likely above- to normal across the region south of 16N and in Belize, below- to normal in the far north-west with low predictability in many areas north of 16ºN. (click here for details)

El Niño/Southern Oscillation (ENSO) Diagnostic Discussion

ENSO-neutral is expected through the Northern Hemisphere spring 2014. (Click here for details)

Moon/Sun/Tide Data for the month of November 2013

Sunrise/sunset data, phase of the moon, as well as tide data can all be found by going to the climate portion of the National Weather Service San Juan Climate homepage and then clicking on the astronomical tab  


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