Tonbridge-Weather.org.uk

JULY 2005 daily and monthly summary

This page contains the July 2005 monthly stats and daily summaries for my own site readings.
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JULY 2005
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1st - 9th
Cool, cloudy, breezy and unsettled. Little sunshine and often dull, temps rather below average but very little rainfall.
10th - 21st
A sudden change to a hot spell with long periods of unbroken sunshine. Water restrictions: a hosepipe and sprinkler ban has been introduced in many areas of Kent due to the ongoing rainfall deficit (60% of normal over the last 5 months). This is now the driest long-term period since the drought of 1976.
22nd - 31st
The hot spell ended quietly without a thundery breakdown. Less warm but more humid with much more cloud. The 16 day dry spell was broken on the 24th by very active fronts which brought prolonged heavy rain to Ireland and the SW of Britain. Slow moving low pressure systems then stalled near the UK, bringing a dull, very wet and generally cool end to the month. More than 40mm rainfall in the last week of July brought an end to 8 consecutive months with below average rainfall, ironically just as the area of hosepipe bans is extended to more of Kent and Sussex!

 JULY 2005 - MONTHLY SUMMARY
 TEMPERATURE
 Average Maximum 22.5
ºc 
(±0)
 Average Minimum 13.6
ºc 
(+0.5)
 Monthly Mean 17.5
ºc 
(+)
 Highest Maximum 30.4
ºc 
(13th)
 Lowest Minimum 9.6
ºc 
(5th)
 Days with Max >25ºc 8    
       
 AMBIENT TEMPERATURE
 Lowest Wind Chill 9.6
ºc 
(5th)
 Highest Heat Index (THW) 29.8
ºc 
(13th)
 Highest Sun Index (THSW) 37.5
ºc 
(13th)
        
 RAINFALL
 Monthly Total 54.4
 mm
(127%)
 Rainy Days (=>0.3mm) 12   (+1)
 Dry Days 19   (-1)
 Highest Daily Total 13.0
 mm
(30th)
 Highest Rain Rate 101.6
 mm/hr
(28th)
 Wet days =>10mm) 1
 
     
 EVAPO-TRANSPIRATION
 Highest Daily 4.7
 mm (20th)
 Monthly Total 81.8
 mm
 WIND
 Monthly Average
1.6
 mph  
 Highest Gust
22
 mph (4th)
 Dominant Directions
SSW
 (34.2%)
N
 (19.6%)
calm
 (8.9%)
NNW
 (6.9%)
     
 SUN
 Sunniest Day
c. 15
 hrs (17th)
 Maximum Solar Rad.
1228
 w/m² (6th)
 Average Solar Rad.
235
 w/m²  
 DEWPOINT
 Average at 14.00h 11.9 ºc
 Highest Reading 18.9 ºc   (28th)
 Lowest Reading 4.4 ºc   (20th)
 RELATIVE HUMIDITY
 Average at 14.00h 59 %
 Lowest Reading 25 %  (14th)
 Monthly Average 71 %
 BAROMETER
 Monthly Mean 1014.9  hPa  
 Highest Reading 1031.5  hPa (11/12th)
 Lowest Reading 999.1  hPa (25th)

* = deviation from 20 year average. The monthly mean is calculated from all logged temperatures and is not the simple mean of the daily minimum and maximum.
THW = Shaded Heat Index calculated with cooling/warming effect of wind and humidity to give an apparent temperature.
THSW = Unshaded Heat Index calculated with cooling/warming effect of wind, humidity and full direct sunshine to give an apparent temperature.
EVAPO-TRANSPIRATION is drying effect due to sun and wind, and is equivalent to "negative rainfall"

   JULY 2005
 
TEMPERATURE ºc
HUMIDITY
SOLAR RAD
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
DATE
Minimum
(< 09h)
Maximum
(< 21h)
RH %
at 14.00
Dewpoint ºc
at 14.00
% of max
(Noon GMT
)
hPa †
at 14.00
Day Total
(mm)
Average
(mph)
High Gust
(mph)
Dominant
(Compass)
                   
1st 12.3 20.7 65 12.5 32 1014.2 rs 0.5 2.5 18 SSW
2nd 15.8 19.9 72 14.2 25 1018.5 st 0.0 2.6 14 SSW
3rd 13.7 21.2 61 12.2 48 1015.7 fs 0.0 1.9 12 SSW
4th 12.7 18.0 51 6.7 46 1006.3 st 2.0 2.3 22 SSW
5th 9.6 17.9 57 9.2 25 1011.2  f 1.8 3.1 19 SSW
6th 13.0 19.4 54 9.5 42 1008.2 rs 0.5 3.0 20 N
7th 11.1 21.3 84 12.4 16 1013.4  r 1.8 2.6 20 N
8th 13.3 18.3 75 11.4 9 1018.4 st 0.0 2.1 14 N
9th 13.7 22.4 70 12.3 19 1023.6 st 0.0 1.8 13 N
10th 14.7 28.9 46 14.3 82 1028.4 st 0.0 0.8 11 N
11th 16.2 27.8 47 14.6 45 1031.0 st 0.0 0.8 11 N
12th 13.4 26.6 44 11.2 76 1029.3 f  0.0 0.8 12 N
13th 14.7 30.4 40 14.0 74 1024.1 f  0.0 0.6 13 SE
14th 15.0 29.3 40 13.7 72 1018.5 f  0.0 1.4 13 SSW
15th 14.3 27.5 41 12.3 76 1013.9 st 0.0 1.3 14 SSW
16th 14.8 25.3 41 9.7 77 1016.7 st 0.0 1.1 10 N
17th 10.9 28.4 31 8.9 74 1015.0 fs 0.0 1.0 13 SSW
18th 12.8 23.8 50 12.1 43 1007.6 st 0.0 2.6 20 SSW
19th 13.0 21.6 38 5.8 62 1016.9  r 0.0 2.9 21 SSW
20th 14.4 24.3 38 7.4 69 1019.4 st 0.0 2.9 21 N
21st 12.3 22.8 49 9.7 40 1019.4 fs 0.0 1.7 12 N
22nd 12.8 21.6 63 12.1 22 1016.0 fs 0.0 0.3   8 N
23rd 14.4 21.7 71 13.7 18 1009.1 fs 0.0 0.5 11 SSW
24th 13.8 20.4 91 15.2 12 1001.4  f 7.4 1.7 19 SSW
25th 15.1 20.1 79 14.0 53 1002.8  r 9.4 1.8 14 N
26th 13.4 18.2 57 9.5 19 1011.5 st 1.0 0.6 11 SE
27th 12.8 17.4 92 15.3 10 1008.3 st 9.7 0.0   6 WSW
28th 15.9 24.7 62 16.1 10 1008.3 st 5.6 0.9 14 SSW
29th 14.9 22.0 57 12.6 39 1011.1 st 0.0 2.3 14 SSW
30th 11.3 17.7 89 13.6 17 1011.9 st 13.0 1.7 17 SSW
31st 14.3 19.3 67 12.6 40 1014.0 st 1.8 0.7 11 SSW
                     
Solar Rad(iation) reading indicates the state of the sky (approximately) at just after 12h00 GMT as below:
1 - 10 = Dull overcast; 11 - 20 = overcast; 21 - 49 = cloudy; 50 - 74 = hazy or interrupted sunshine; 75 - 100 = bright uninterrupted sunshine
† Barometer trend: f = falling, st = steady, r = rising; r = rapidly, s = slowly

'WIND ROSE' PLOT FOR THE MONTH
The 'petals' represent wind direction and the length represents frequency, i.e. in this case winds from the SSW were the most common, followed by the N.

The colours represent the strength of the wind, with black being weakest through blue then lighter colours (cyan, light green, yellow, magenta, red) being stronger.

This data excludes 'calm' readings.