AGROCLIMATOGICAL DATA 2002
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 34.9 36.7 37.1 39.2 38.5 35.4 36.0 34.5 34.1 35.5 34.4 34.5 39.2
  Date 25 28 25 17 5 15 11,12 1,24 30 1 15 7,20 17-Apr
  Mean Maximum 32.1 34.7 35.0 37.2 34.5 34.0 34.2 32.8 32.1 32.3 30.9 32.2 33.5
  Mean 26.0 28.4 29.5 31.0 29.8 29.5 29.6 28.8 28.3 28.2 27.2 27.6 28.7
  Mean Minimum 19.8 22.0 24.0 24.7 25.1 25.0 25.0 24.7 24.5 24.0 23.4 23.1 23.8
  Extreme Minimum 16.5 19.9 20.1 23.2 23.4 23.6 23.9 23.5 23.4 21.6 20.5 20.6 16.5
  Date 4 2 8 12 21 23 20 21 23 11 6 29 4-Jan
  Grass minimumtemperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean Minimum 17.8 20.2 22.7 23.4 24.4 24.3 23.8 24.0 23.8 23.2 21.7 21.3 22.6
  Extreme Minimum 13.5 17.5 20.0 21.1 23.0 23.0 22.0 23.0 22.6 20.8 16.5 19.0 13.5
  Date 3 1 8 11 21,28 29 20 4 15 11 6 20,29 3-Jan
  Water temperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean Maximum - - - - - - - - - - - - -
  Mean 25.6 28.3 29.8 31.2 30.0 30.3 29.6 29.2 29.6 29.3 27.9 28.0 29.1
  Mean Minimum - - - - - - - - - - - - -
  Relative humidity ( % ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Extreme Maximum - - - - - - - - - - - - -
  Mean Maximum - - - - - - 92 93 93 95 92 93 93
  Mean - - - - - - 72 74 76 76 75 72 74
  Mean Minimum - - - - - - 52 54 59 56 58 55 56
  Extreme Minimum - - - - - - - - - - - - -
  Date - - - - - - - - - - - - -
  Soil temperature (celcuis) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean at surface 28.7 31.8 32.8 34.8 31.5 30.4 30.6 29.3 29.4 29.7 28.8 29.4 30.6
  Mean at 5 cm 28.2 31.1 32.4 35.2 32.3 30.7 30.7 29.7 29.8 30.0 28.9 29.2 30.7
  Mean at 10 cm 28.6 31.4 32.7 35.3 32.6 31.1 31.2 29.9 30.0 30.2 29.0 29.4 31.0
  Mean at 20 cm 27.7 30.2 31.5 34.3 32.0 30.7 30.6 29.4 29.3 29.4 28.3 28.8 30.2
  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 0.0 25.0 3.1 123.6 195.1 45.0 111.8 240.0 182.4 123.1 18.2 1067.3
  Number of rainy day 0 0 2 4 14 19 9 18 14 12 8 3 103
  Greatest in 24 hr - - - - - - - - - - - - -
  Date - - - - - - - - - - - -  
  Evaporation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Mean 129.7 128.0 150.6 189.2 152.7 135.4 153.9 129.8 125.7 116.3 105.3 108.6 1625.2
  Wind Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Prevailing direction 1/N 1/SE 1/S 1/SE 1/S 1/W 1/W 1/W 1/W 1/N 1/N 1/N 1/NW
  Mean speed ( m/s ) - - - - - - - - - - - -  
  Sunshine duration ( hr ) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
  Extreme Maximum - - - - - - - - - - - - -
  Date - - - - - - - - - - - -  
  Mean 7.5 8.2 7.7 8.7 5.3 5.2 4.4 3.1 4.1 6.2 5.7 6.5 6.1
Remark : "-" indicate missing data Argometeorological analysis sub-division , Agrometeorology division data
processing sub-division , Climatology division meteorological department