Climate Data and Brief Summary for September 2002

Last updated 6th October 2002

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

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                       13.4          +0.9
Mean Maximum               17.2          +1.1
Mean Minimum                9.7          +0.8
High Maximum               21.0                        12th
Low Minimum                 4.6                         1st
Low Maximum                13.9                         9th
High Minimum               14.1                        13th
Low Grass                   0.6                         1st
Air Frosts                   0            0
Ground Frosts                0            0
Hours of Frost              0.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1021.7         +7.4
Maximum                   1033.7                        1st                               
Minimum                   1005.9                        7th

PRECIPITATION (mm)
Total                       61.6         -8.0                                            
Rain days (0.2mm or more)    6           -9                                             
Wet days (1.0mm or more)     5           -6 
Maximum Fall                39.3                        9th
Rainfall duration (hrs.)    21.2
 
SUNSHINE

Sun Hours                  162.7        +50.7
Maximum day                 13.2                        1st
Nil Sun Days                 2

HUMIDITY %

Mean                        80.7
Dry days (60% or less)      16                                                  

WIND (mph)

24hour mean                  1.4
09.00 mean                   1.3
Maximum gust                29.0                        6th 
%North                       3
%North East                  2
%East                       12
%South East                 22
%South                       2
%South West                 13
%West                        0
%North West                 13
%Calm                       33
Hours of calm              301.5

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                         0
Thunder                      1
Fog (09.00)                  0

Brief summary of the month:
September 2002 was a very dry month with 23 completely dry days, despite receiving
89% of the average rainfall all of which fell in just 6 days, the lowest total of rain
days since 1986. It was also the sunniest on record with 146% of the average. 
September 2002 is also quite unique as it's the sunniest month of 2002 so far! As you
would expect with all that sunshine it was a warmer than normal month with the mean 
temperature almost a degree above average, the warmest since 2000.

All data taken at 220 metres above sea level


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