AGROCLIMATOGICAL
DATA 2004 |
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| 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 | 35.6 | 37.0 | 39.0 | 40.0 | 38.0 | 35.7 | 37.0 | 36.3 | 35.7 | 33.5 | 35.6 | 33.5 | 40.0 | ||
| Date | 31 | 3 | 24 | 18 | 2 | 6 | 7 | 23 | 12 | 30 | 11 | 26 | 18-Apr | ||
| Mean Maximum | 32.5 | 33.6 | 35.8 | 37.8 | 33.6 | 33.2 | 34.4 | 33.7 | 32.6 | 31.6 | 32.7 | 31.4 | 33.6 | ||
| Mean | 26.4 | 27.0 | 29.8 | 31.2 | 34.3 | 28.9 | 29.6 | 29.3 | 28.6 | 27.7 | 27.8 | 24.8 | 28.8 | ||
| Mean Minimum | 20.4 | 20.5 | 23.8 | 24.6 | 25.0 | 24.6 | 24.7 | 24.8 | 24.5 | 23.7 | 22.8 | 18.2 | 23.1 | ||
| Extreme Minimum | 16.9 | 16.5 | 19.2 | 21.6 | 23.0 | 23.0 | 22.0 | 24.2 | 22.9 | 21.5 | 18.9 | 15.6 | 15.6 | ||
| Date | 26 | 16 | 3 | 17 | 23 | 18,26 | 9 | 6 | 19 | 27 | 22 | 21 | 21-Dec | ||
| Grass minimumtemperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Minimum | 19.3 | 19.6 | 23.0 | 23.8 | 24.6 | 24.1 | 24.4 | 24.3 | - | - | - | - | 22.9 | ||
| Extreme Minimum | 16.0 | 15.4 | 18.5 | 20.5 | 22.2 | 22.5 | 23.5 | 23.0 | - | - | - | - | 15.4 | ||
| Date | 26 | 17 | 3 | 17 | 23 | 19 | 9,14 | 14 | - | - | - | - | 17-Feb | ||
| Water temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean | 26.1 | 27.0 | 29.4 | 31.0 | 31.4 | - | - | - | - | - | - | - | 29.0 | ||
| Mean Minimum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Relative humidity ( % ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Extreme Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean Maximum | 90 | 88 | 91 | 92 | 92 | 94 | 93 | 94 | 93 | 95 | 90 | 88 | 92 | ||
| Mean | 66 | 63 | 66 | 66 | 73 | 75 | 72 | 74 | 76 | 77 | 69 | 63 | 70 | ||
| Mean Minimum | 41 | 37 | 41 | 39 | 54 | 56 | 50 | 53 | 58 | 59 | 47 | 37 | 48 | ||
| Extreme Minimum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Soil temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean at surface | 27.9 | 29.4 | 31.8 | 34.4 | 30.3 | 29.6 | 30.4 | 29.9 | 28.9 | 28.8 | 30.4 | 27.3 | 29.9 | ||
| Mean at 5 cm | 28.7 | 30.1 | 32.6 | 35.4 | 31.1 | 30.2 | 30.6 | 30.4 | 29.6 | 29.3 | 30.9 | 27.8 | 30.6 | ||
| Mean at 10 cm | 28.4 | 29.9 | 32.3 | 35.2 | 31.2 | 30.3 | 30.8 | 30.5 | 29.8 | 29.4 | 30.9 | 27.9 | 30.6 | ||
| Mean at 20 cm | 28.4 | 30.0 | 31.9 | 35.1 | 34.7 | 34.5 | - | - | - | - | - | - | 32.4 | ||
| 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 | 5.6 | 10.9 | 10.9 | 10.8 | 219.5 | 57.7 | 60.9 | 69.5 | 344.6 | 173.7 | 4.0 | 0.0 | 968.1 | ||
| Number of rainy day | 3 | 2 | 1 | 1 | 18 | 15 | 13 | 16 | 22 | 13 | 2 | 0 | 106 | ||
| Greatest in 24 hr | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | |||
| Evaporation | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean | 119.5 | 142.4 | 182.3 | 205.6 | 146.7 | 124.9 | 180.6 | 157.8 | 96.5 | 114.5 | 140.6 | 145.4 | 1756.8 | ||
| Wind | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Prevailing direction | 1/N | 1/SE | 1/SE | 1/SE | 0/C | 1/SW | 1/W | 1/W | 1/SE | 1/SE | 1/N | 2/N | 1/SE | ||
| Mean speed ( m/s ) | - | - | - | - | - | - | - | - | - | - | - | - | |||
| Sunshine duration ( hr ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Extreme Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | |||
| Mean | 7.2 | 8.5 | 7.9 | 9.3 | 5.4 | 4.9 | 5.1 | 4.0 | 3.8 | 6.3 | 8.0 | 8.9 | 6.6 | ||
| Remark : "-" indicate missing data | Argometeorological analysis sub-division , Agrometeorology division data | ||||||||||||||
| processing sub-division , Climatology division meteorological department | |||||||||||||||