AGROCLIMATOGICAL DATA 2006
Station     : Ratchaburi Elevation of station above MSL 5.00  m.
Latitude    : 13.5 N Hight of thermometer above ground - m.
Longtitude : 99.8 E Hight of wind vane above ground  - m.
Hight of rain gauge - m.
  Air temerature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Extreme Maximum 36.5 36.5 22.0 37.7 38.3 36.0 35.0 36.9 35.9 - - - 38.3
  Date 21 28 4 5 4 13 9 24 6 - - - 4-May
  Mean Maximum 32.9 34.0 37.9 36.2 33.9 33.6 33.0 33.1 32.9 - - - 34.2
  Mean 26.4 28.4 31.0 30.6 29.3 29.2 29.1 29.0 28.7 - - - 29.1
  Mean Minimum 19.9 22.8 24.1 24.9 24.7 24.8 25.1 24.8 24.4 - - - 23.9
  Extreme Minimum 15.9 20.5 20.0 23.0 23.0 24.3 24.0 23.6 23.0 - - - 15.9
  Date 20 7 1 2 29 8 19,20 10 15 - - - 20-Jan
  Grass minimumtemperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean Minimum 16.0 19.8 21.5 22.9 23.4 23.4 23.5 22.9 22.8 - - - 21.8
  Extreme Minimum 10.5 17.0 20.0 21.0 22.5 21.5 22.1 21.9 21.6 - - - 10.5
  Date 20 7 1 2 13 8 23 24 1 - - - 20-Jan
  Water temperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean Maximum - - - - - - - - - - - - -
  Mean - - - - - - - - - - - - -
  Mean Minimum - - - - - - - - - - - - -
  Relative humidity ( % ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Extreme Maximum - - - - - - - - - - - - -
  Mean Maximum 96 95 95 97 98 92 90 91 93 - - - 94
  Mean 68 71 71 72 78 74 75 74 76 - - - 73
  Mean Minimum 40 47 47 46 58 56 60 57 59 - - - 52
  Extreme Minimum - - - - - - - - - - - - -
  Date - - - - - - - - - - - - -
  Soil temperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean at surface 28.6 30.9 33.6 33.9 31.2 30.0 29.5 29.3 29.9 - - - 30.8
  Mean at 5 cm - - - - - - - - - - - - -
  Mean at 10 cm 28.8 30.8 33.4 34.0 31.7 30.5 29.8 29.6 30.2 - - - 31.0
  Mean at 20 cm 28.1 29.9 32.3 33.1 31.6 30.5 29.8 29.3 30.1 - - - 30.5
  Mean at 50 cm - - - - - - - - - - - - -
  Mean at 100 cm - - - - - - - - - - - - -
  Rainfall ( mm ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Total amount 0.0 17.9 13.2 61.6 202.6 181.7 82.9 24.3 150.9 - - - 735.1
  Number of rainy day 0 4 3 7 15 18 18 11 19 - - - 95
  Greatest in 24 hr - - - - - - - - - - - - -
  Date - - - - - - - - - - - -  
  Evaporation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean 133.9 131.7 165.3 166.1 147.9 120.0 121.3 130.3 132.0 - - - 1248.5
  Wind Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Prevailing direction 2/N 2/E 3/SE 2/S 2/SE 1/W 2/W 3/W 2/S - - - -
  Mean speed ( m/s ) - - - - - - - - - - - -  
  Sunshine duration ( hr ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Extreme Maximum - - - - - - - - - - - - -
  Date - - - - - - - - - - - -  
  Mean 8.7 8.2 7.4 8.2 5.7 5.0 3.7 2.7 5.3 - - - 6.1
Remark : "-" indicate missing data Argometeorological analysis sub-division , Agrometeorology division data
processing sub-division , Climatology division meteorological department