Tonbridge-Weather.org.uk

2012 Yearly summary


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This page contains the yearly/monthly summaries for 2012 and links to each month for daily readings.

2012 YEARLY SUMMARY
ACTUAL TEMPERATURE
 AVERAGE
 Daily Maximum 14.5  ºC ( -0.1C )*
 Daily Minimum 7.1  ºC ( -0.2C )*
 Daily Mean Simple (Max+Min)/2 10.78  ºC ( -0.19C )*
 EXTREMES
 High Maximum
30.9
 ºC ( 25 Jul )
 Low Minimum -8.4  ºC ( 11 Feb )
 Low Maximum
-0.6
 ºC ( 12 Dec   )
 High Minimum
17.2
 ºC ( 19 Aug )
 
   
 Days with max > 25 º
24
  ( +1 )*
 Days with Air Frost
27
  ( -4 )*
 Days with max < 0 º ("Ice days")
1
  ( -1 )*
 
PRECIPITATION
 Yearly Total
722.0
 mm ( 105.2% )*
 Days with measurable precip
182
 Days ( +21 )*
   ...of which, days with >= 1.0 mm
131
 Days ( +8 )*
   ...and days with snowfall observed
7
 Days  
 Days with Snow Cover
4
 Days  
 Days with Thunder
9
 Days  
 RAIN RATE & EXTREMES
 High Rain Rate
166.4
 mm/hr ( 25 Sep )
 High Rain Total in 1 day
23.9
 mm ( 25 Apr )
 High Rain Total in 1 hour
9.1
 mm ( 25 Sep )
 EVAPO-TRANSPIRATION
 Total for Year
609.6
 mm  
 High Total for 1 day
4.9
 mm ( 26 May )
APPARENT TEMPERATURE
 Low Wind Chill
-8.4
 ºC ( 11 Feb )
 DAVIS HEAT INDICES THW & THSW
 Low Temp/Hum/Wind Index
-8.5
 ºC ( 11 Feb )
 High Temp/Hum/Wind Index
30.0
 ºC ( 25 Jul )
 High Temp/Hum/Sun/Wind Index
36.4
 ºC ( 25 Jul )
 
DEWPOINT & HUMIDITY
 High Dewpoint
19.0
 ºC ( 28 Jun )
 Low Dewpoint
-11.1
 ºC ( 11 Feb  )
 
   
 Low Relative Humidity
22
 % ( 8 Sep )
 
   
WIND SPEED & DIRECTION
 Yearly Average
2.0
 mph  
 Windiest day (Average)
8.2
 mph ( 8 Jun )
 Highest Gust
35
 mph ( 5 Jan )
 Dominant Direction
SW
 ( 28% )
 
BAROMETER
 Yearly Mean
1013.6
 hPa  
 High Barometer
1041.5
 hPa ( 7 Feb )
 Low Barometer
974.3
 hPa ( 1 Nov )
SUNSHINE
 Max Sensor Exposure to direct sun
1.5 - 10
 hrs/day (8-16 in theory)
 Calculated Yearly Sunshine Hours
1108.6
 hours  
 Estimated Actual Hours (approx)
1441
 hours  
 Sunniest Month Actual Hours
171
 hours ( May )
 Days with no sunshine
53
 Days  
 
FOG
 Number of Days with Fog
14
 Days  
NOTABLE SITE RECORDS SET THIS YEAR



* Compared to site average 1985 - 2011



YEAR 2012 - MONTHLY SUMMARY  
Click on month
name for daily stats
Monthly Ave Temperature ºc
Monthly Low / High ºc
Sun*
Monthly Rainfall
Wind (mph)
Min Max Mean Min Max Hrs* Total
(mm)
Wet
Days
Ave Speed / Dir High
Gust
JANUARY   
4.0 8.7 6.13 -4.1 12.6 69 38.7 12 2.2 / SW   35
FEBRUARY  
1.8 7.4 4.29 -8.4 17.4 82 11.4 6 1.5 / SSW 27
MARCH  
4.3 14.2 8.56 1.5 22.3 168 17.5 6 1.4 / N      32
APRIL  
4.4 12.7 7.97 -0.8 20.0 132 101.8 22 2.3 / SW   32
MAY  
9.4 17.9 13.19 3.4 28.3 170 45.7 14 1.8 / N      22
JUNE  
10.7 18.4 14.13 5.7 26.9 133 97.7 18 2.8 / SW   34
JULY  
12.1 20.6 15.93 8.1 30.9 152 76.1 17 1.9 / SSW 22
AUGUST  
13.2 22.5 17.25 7.3 29.7 170 32.7 13 1.9 / SW   22
SEPTEMBER  
9.2 18.7 13.62 3.7 27.6 164 52.3 9 1.8 / SSW 25
OCTOBER  
8.1 13.8 10.66 0.9 16.7 78 78.5 25 1.7 / SW   29
NOVEMBER  
4.6 10.1 7.17 -1.1 14.4 77 72.0 18 1.8 / SW   32
DECEMBER  
3.2 8.0 5.57 -5.4 12.5 46 97.6 22 2.7 / SW   31
Year  
    10.37 -8.4 30.9 1441 722.0 182   35


BOLD signifies new site record for the month since recording began ( † record low ).
* Total bright sunshine hours estimated from limited daily exposure solar radiation readings