Climate Data and Brief Summary for Summer 2004

Last updated 2nd September 2004

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

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                       14.9          +0.4
Mean Maximum               18.9          +0.4
Mean Minimum               11.0          +0.5
High Maximum               27.3                         8th August
Low Minimum                 3.6                        19th June
Low Maximum                12.2                        20th June
High Minimum               16.4                         9th August
Low Grass                   2.0                        19th June
Air Frosts                   0            0
Ground Frosts                0           -1 
Hours of Frost              0.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1012.8        -2.5
Maximum                   1030.9                        30th June                             
Minimum                    989.4                        29th June

PRECIPITATION (mm)
Total                      354.9       +155.2           (RECORD)                                
Rain days (0.2mm or more)   59          +20                                            
Wet days (1.0mm or more)    43          +11 
Maximum Fall                39.6                        10th August
Rainfall duration (hrs.)   148.2
 
SUNSHINE

Sun Hours                  448.6        -14.0
Maximum day                 13.5                         7th August
Nil Sun Days                 7

HUMIDITY %

Mean                        83.2
Dry days (60% or less)      50                                                  

WIND (mph)

24hour mean                  3.8
09.00 mean                   4.5
Maximum gust                34.0              27th June/19th August 
%North                       2.1
%North East                  0.0
%East                        1.6
%South East                 15.1
%South                      11.4
%South West                 19.0
%West                       19.1
%North West                 30.5
%Calm                        1.2
Hours of calm              285.5

MISCELLANEOUS

Days with:

Sleet/Snow                   0            0            
Snow lying (09.00)           0            0
Maximum depth (cm)           0.0                          
Total snow depth (cm)        0.0
Hail                         1            0
Thunder                     10           +4
Fog (09.00)                  0           -1

Brief summary of the month:
Summer 2004 was the wettest on record (1960-2004), it was also the coolest
and the dullest since 2002.


All data taken at 220 metres above sea level


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