Climate Data and Brief Summary for August 2004

Last updated 2nd September 2004

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

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                       16.2           1.1
Mean Maximum               20.1           0.9
Mean Minimum               12.4           1.3
High Maximum               27.3                         8th
Low Minimum                 7.2                      22/28th
Low Maximum                15.0                        30th
High Minimum               16.4                         9th
Low Grass                   5.0                        28th
Air Frosts                   0            0
Ground Frosts                0            0
Hours of Frost             00.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1008.5          -7.4
Maximum                   1020.1                        1st                               
Minimum                    993.9                       18th

PRECIPITATION (mm)
Total                      209.8       +137.5 		(RECORD)                                         
Rain days (0.2mm or more)   21           +7                                            
Wet days (1.0mm or more)    17           +6 
Maximum Fall                39.6                       10th
Rainfall duration (hrs.)    67.9
 
SUNSHINE

Sun Hours                  151.7         -6.1
Maximum day                 13.5                        7th
Nil Sun Days                 2

HUMIDITY %

Mean                        85.8
Dry days (60% or less)      15                                                  

WIND (mph)

24hour mean                  3.7
09.00 mean                   4.4
Maximum gust                34.0                       19th 
%North                       2
%North East                  0
%East                        5
%South East                 27
%South                      13
%South West                 16
%West                       13
%North West                 21
%Calm                        3
Hours of calm              107.0

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                         0
Thunder                      8
Fog (09.00)                  0

Brief summary of the month:
August 2004 was the wettest of any month since records began in 1960 and the
first time 200mm or more has been recorded. There was several falls over 25mm
and some exceptional storms. Temperatures were again above average but it was
cooler than 2003, the coolest in fact since 2002. Sunshine hours were below 
average with only 96%, the dullest since 2002. Thunder days were also the 
highest since 1999.  


All data taken at 220 metres above sea level


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