Climate Data and Brief Summary for September 2004

Last updated 16th October 2004

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

SCREEN TEMPERATURES °c
                                        Anomaly*       Date
Mean                       13.4          +0.9
Mean Maximum               17.0          +0.9
Mean Minimum                9.7          +0.8
High Maximum               23.6                         5th
Low Minimum                 4.8                        24th
Low Maximum                12.7                        24th
High Minimum               15.0                         4th
Low Grass                   1.1                        24th
Air Frosts                   0            0
Ground Frosts                0            0
Hours of Frost              0.0

Barometric pressure, 24 hour observations (mbar)
Mean                      1015.9         +1.6
Maximum                   1033.7                      7/8th                               
Minimum                    995.5                       14th

PRECIPITATION (mm)
Total                       72.6         +3.0                                            
Rain days (0.2mm or more)   14           -1                                             
Wet days (1.0mm or more)    12           +1 
Maximum Fall                14.7                       23rd
Rainfall duration (hrs.)    44.9
 
SUNSHINE

Sun Hours                  150.1        +38.1
Maximum day                 12.2                        7th
Nil Sun Days                 3

HUMIDITY %

Mean                        84.6
Dry days (60% or less)      13                                                  

WIND (mph)

24hour mean                  5.0
09.00 mean                   5.3
Maximum gust                37.0                       13th 
%North                       2
%North East                  0
%East                        0
%South East                 20
%South                      13
%South West                 23
%West                       27
%North West                 12
%Calm                        3
Hours of calm               83.0

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                      1
Fog (09.00)                  1

Brief summary of the month:
September 2004 was another warmer than average month, the warmest since 2002.
It was also the 5th sunniest on record behind 2003, 2002, 1991 and 1971 with 
134% of the average. Rainfall totals were just above average with 104%, making
it the wettest since 2001.

All data taken at 220 metres above sea level


Return to Monthly Data page

Return to Climate Data Page