Weather at Tonbridge, Kent, Latitude 51° 11' N, Longitude 0° 16' E, Altitude 44m.  Sunrise: 6:04  Sunset: 19:54
 CONDITIONS (AS AT 21:35 UTC+1, 27/08/08 ): Dry. Overcast
 TEMPERATURE/HUMIDITY  CURRENT  TREND  LOW 27/08/08  HIGH 27/08/08
 Temperature  17.1°C  -0.2°C/last hr  15.2°C at 06:40  19.8°C at 17:20
 Dewpoint  11.8 °C  +0.2 ºC/last hr  11.4 °C at 20:47  13.6 °C at 17:10
 Relative Humidity (RH)  71%  + 2% last hr  65% at 14:10  84% at 07:10
 Feels Like (Heat Index)  17.1°C  N/A  15.2 °C at 17:20  19.8 °C at 17:20
 Wet Bulb Temp  14.1°C  ( Wet Bulb Depression = 2.9 ºC : Dewpoint depression = 5.3 °C )
 WIND SPEED / DIRECTION  CURRENT  RECENT    HIGH 27/08/08
 Wind Speed average  0.9 mph = 1.4 km/h  = Calm  9.9 mph = 4.4 m/s at 18:17
 Gust Wind Speed Snapshot  3.5 mph = 1.5 m/s  High Last Hour: 8.0 mph = 3.6 m/s  13.0 mph = 5.8 m/s at 06:00
 Dominant Wind Direction  W  Last 10 Mins: WSW  Dominant direction since 00h: South westerly
 BAROMETER  CURRENT  TREND (last 3 hours)  LOW 27/08/08  HIGH 27/08/08
 Barometer (Mean Sea Level)  1021.0 hpa  Steady  (+0.9 hPa )  1020.0 hPa at 17:20  1021.6 hPa at 00:01
 History  Pressure change in hPa last 1 / 6 / 12 / 24 hours = +0.4  / +0.3  / -0.1  / -0.4
 Vapour Pressure  13.79 hPa
 RAIN  CURRENT  RECENT   HIGH 27/08/08
 Today's Rainfall (total since midnight)   0.0 mm  0.0 mm mm rain in last hour
 Rain Rate  0.0 mm/hr  Has been raining for 0 minutes  0.0 mm/hr at 00:00
 SUNSHINE DATA  CURRENT    HIGH 27/08/08
 ( N.B. Solar radiation sensor has severely limited exposure to direct sun from November to February. )
 Apparent Temperature in the sun  17.5 °C
 Solar Radiation  0 of possible 0 w/m² ( 0 %)  688 w/m² at 13:19 
 Sunshine Hours hh:mm   0 mins in last/hr  : Total today: 00:10  (auto + manual input)
 Maximum Possible Sunshine hh:mm  13:52  
 Ultraviolet Radiation Index  0.0 / Maximum: 6.3 at 13:19
 MORE RAIN DATA
 Last Rainfall recorded  2 day(s) ago, on 24/8/2008
 Rain in 24 hours to 21:35  0.0 mm
 Rain Total Last 7 Days  6.6 mm
 Rainy Days This Month  19
 Rain Total This Month  49.1 mm
 Rain Total This Year  456.7 mm
 LAST 7 DAYS IN BRIEF
 Low Temperature  9.9 ºC on Sat
 High Temperature  20.9 ºC on Sun
 Low Humidity  41.0 % on Sat
 Max gust wind speed  20.7 mph on Mon
 Low Barometer  1008.0 on Sun
 High Barometer  1021.7 on Tue
 EXTREME READINGS TO 21:35, 27/08/08 FOR:
August
2008
 High Temperature
25.7
  ºC on day 6
29.6
 ºC on 28 / 7
 Low Temperature
8.5
  ºC on day 15
-5.3
 ºC on 17 / 2
 High Dew Point
16.7
 ºC on day 7
17.7
  ºC on 31 / 7
 Low Dew Point
5.7
 ºC on day 23
-8.7
  ºC on 18 / 2
 Low Relative Humidity
41
  % on day 23
22
  % on 11 / 5
 Low Wind Chill
8.5
  ºC on day 15
-5.3
  ºC on 17 / 2
 High Heat Index
26.4
  ºC on day 6
29.4
  ºC on 28 / 7
 High Wind Speed
29.0
  mph on day 12
38.0
   mph on 10 / 3
 High Barometer (Mean Sea Level)
1021.7
  hPa on day 26
1042.4
  hPa on 16 / 2
 Low Barometer (Mean Sea Level)
985.4
  hPa on day 12
963.6
  hPa on 10 / 3
 Highest Daily Rainfall Total
10.7
  mm on day 12
27.9
  mm on 15 / 1
 High Rain Rate
0.4
  mm/min on day 13
0.9
  mm/min on 25 / 5
 High Solar Radiation
1119.0
  w/m² on day 23
1269.0
  w/m² on 25 / 5
 OTHER STATS    
 Number of days with air frosts
0
24
 Mean Average Temperature
16.2 ºC
11.9 ºC
 Calculated Sunshine Hours (hh:mm)
98:20
1033:20
MORE LIVE DATA READINGS PAGE 2
Note: Following the 8th Congress of the World Meteorological Organization, from 1 January 1986 the term hectopascal (hPa) is preferred to the numerically identical millibar (mbar) for meteorological purposes. 1 hPa = 1mb
HISTORICAL DATA GRAPHS (Data plotted every 30 mins)
( Data for last 48 hours logged every 10 mins shown in simple text file format. )
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This data is recorded using a wireless Davis Vantage Pro 1 with the datalogger and Weatherlink software. Presentation to web also uses Dreamweaver 8 and customisation features of Weather Display and Weather Display Live and the VirtualVP utility. The ISS ( rain gauge / temperature and humidity sensor ) is attached to the top of a fence, facing ESE. It is sited at 1.2m above loose soil, 4m away from the house. The anemometer is located separately, 4.5m above ground level and with the house obstructing much airflow from NE to E.

Automatic Weather Station History
28 July 2004: Wireless Davis Vantage Pro installed with passive radiation shield.
29 Oct 2004: Anemometer exposure slightly improved.
06 Jan 2005: Installed Daytime Fan Aspirated Radiation Shield (DFARS).
25 Feb 2005: Installed solar radiation sensor.
02 Sep 2005: Weatherlink software upgraded to v5.60
29 May 2006: Weatherlink software upgraded to v5.70
01 Jun 2006: Started using new software VirtualVP and Weather Display with Weather Display Live
01 Jan 2007: Installed independent lux (brightness) sensor to improve sunshine readings (not linked to above readings).
03 April 2008 Added UV Radiation sensor