Climate Data and Brief Summary for December 2006

Last updated 7th January 2007

*Anomalies are based on averages for the period 1971-2000

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                        5.4           1.5
Mean Maximum                7.6           1.4
Mean Minimum                3.1           1.6
High Maximum               12.4                         4th
Low Minimum                -2.2                        22nd
Low Maximum                 2.8                     23/26th
High Minimum                9.3                        14th
Low Grass                  -7.4                        22nd
Air Frosts                   4           -6
Ground Frosts               13           -4
Hours of Frost             31.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1015.1          2.8
Maximum                   1042.6                       21st                               
Minimum                    979.2                        7th

PRECIPITATION (mm)
Total                      101.2         20.9                                           
Rain days (0.2mm or more)   21            2                                            
Wet days (1.0mm or more)    15            2 
Maximum Fall                14.2                       15th
Rainfall duration (hrs.)    48.5
 
SUNSHINE

Sun Hours                   40.5         +2.4
Maximum day                  6.2                       21st
Nil Sun Days                 10

HUMIDITY %

Mean                        89.6
Dry days (60% or less)       0                                                  

WIND (mph)

24hour mean                  6.5
09.00 mean                   5.6
Maximum gust                49.0                       31st 
%North                       0
%North East                  0
%East                        6
%South East                 13
%South                      13
%South West                 23
%West                       19
%North West                 13
%Calm                       13
Hours of calm               98.5

MISCELLANEOUS

Days with:

Sleet/Snow                   0           -5 
Snow lying (09.00)           0           -3
Maximum depth (cm)           0.0                          
Total snow depth (cm)        0.0
Hail                         1
Thunder                      0
Fog (09.00)                  2

Brief summary of the month:
December 2006 was a warm but wet month and also very windy at times.
It was the warmest December since 1988. The month was also wet with 
126% of the average rainfall, the wettest since 2003. Sunshine totals
were near normal with 106% of the average, the dullest since 2002.
There was no snowfall for the first time since 1987 and the lowest
number of air frosts since 1988. 

All data taken at 220 metres above sea level


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