AGROCLIMATOGICAL
DATA 1992 |
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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 | 33.4 | 35.9 | 36.9 | 39.9 | 39.4 | 37.4 | 36.9 | 34.8 | 34.4 | 32.7 | 32.8 | 33.6 | 39.9 | ||
| Date | 30 | 16 | 31 | 21 | 3,8 | 4 | 4 | 28 | 13 | 2 | 19 | 12 | 21-Apr | ||
| Mean Maximum | 30.8 | 33.6 | 35.4 | 37.4 | 36.7 | 33.8 | 33.7 | 32.6 | 32.7 | 29.6 | 29.3 | 31.0 | 33.0 | ||
| Mean | 25.0 | 27.2 | 29.0 | 31.1 | 31.2 | 29.5 | 29.1 | 28.7 | 28.5 | 26.5 | 25.3 | 25.6 | 28.1 | ||
| Mean Minimum | 19.2 | 20.7 | 22.8 | 24.8 | 25.7 | 25.2 | 24.4 | 24.8 | 24.3 | 23.5 | 21.2 | 20.1 | 23.1 | ||
| Extreme Minimum | 14.3 | 17.0 | 18.0 | 20.5 | 24.7 | 24.4 | 23.0 | 24.0 | 22.6 | 20.6 | 17.6 | 15.6 | 14.3 | ||
| Date | 19 | 17 | 2 | 5 | 19 | 11 | 9 | 11 | 29,30 | 30 | 30 | 2 | 19-Jan | ||
| Grass minimumtemperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Minimum | 18.3 | 20.0 | 21.6 | 23.6 | 24.8 | 24.6 | 23.7 | 24.2 | 23.6 | 23.1 | 20.1 | 19.0 | 22.2 | ||
| Extreme Minimum | 12.8 | 16.0 | 16.1 | 19.3 | 21.5 | 23.9 | 23.0 | 23.4 | 23.0 | 20.9 | 16.0 | 13.9 | 12.8 | ||
| Date | 19 | 19 | 2 | 5 | 31 | 11,23 | 10,24 | 11 | 29,30 | 30 | 30 | 2 | 19-Jan | ||
| Water temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean | 25.2 | 27.2 | 28.7 | 30.4 | 30.9 | 30.2 | 29.2 | 28.8 | 29.3 | 27.1 | 25.6 | 25.4 | 28.2 | ||
| Mean Minimum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Relative humidity ( % ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Extreme Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean Maximum | 95 | 95 | 95 | 95 | 94 | 96 | 96 | 95 | 95 | 96 | 95 | 96 | 95 | ||
| Mean | 70 | 65 | 65 | 65 | 69 | 75 | 74 | 75 | 76 | 82 | 76 | 72 | 72 | ||
| Mean Minimum | 45 | 65 | 35 | 35 | 44 | 54 | 54 | 56 | 57 | 68 | 56 | 48 | 51 | ||
| Extreme Minimum | 30 | 15 | 19 | 23 | 27 | 41 | 39 | 44 | 46 | 47 | 41 | 37 | 15 | ||
| Date | 18 | 16,17 | 2 | 14,15 | 7 | 1 | 4 | 9 | 14 | 28 | 14 | 9 | 17-Feb | ||
| Soil temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean at surface | 26.8 | 29.7 | 31.6 | 33.7 | 32.6 | 31.2 | 31.2 | 30.1 | 30.9 | 28.1 | 27.8 | 28.8 | 30.2 | ||
| Mean at 5 cm | 27.6 | 30.9 | 32.8 | 34.5 | 33.6 | 31.8 | 31.8 | 30.6 | 31.4 | 28.6 | 28.3 | 29.1 | 30.9 | ||
| Mean at 10 cm | 27.7 | 30.5 | 32.3 | 33.9 | 33.1 | 32.1 | 31.9 | 30.6 | 31.3 | 28.5 | 28.2 | 29.1 | 30.8 | ||
| Mean at 20 cm | 27.7 | 30.5 | 32.2 | 33.6 | 32.8 | 31.8 | 31.6 | 30.5 | 31.2 | 28.6 | 28.1 | 28.9 | 30.6 | ||
| Mean at 50 cm | 28.2 | 30.6 | 32.1 | 33.3 | 32.4 | 31.7 | 31.5 | 30.5 | 31.2 | 29.3 | 28.5 | 29.3 | 30.7 | ||
| Mean at 100 cm | 29.5 | 30.9 | 32.3 | 33.7 | 33.6 | 33.0 | 32.6 | 31.7 | 32.1 | 31.0 | 30.1 | 30.8 | 31.8 | ||
| Rainfall ( mm ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Total amount | 1.0 | 3.8 | 0.0 | 0.0 | 93..2 | 99.3 | 124.6 | 197.9 | 115.7 | 397.5 | 8.4 | 1.5 | 1042.9 | ||
| Number of rainy day | 2 | 1 | 0 | 0 | 10 | 20 | 15 | 14 | 16 | 19 | 4 | 3 | 104 | ||
| Greatest in 24 hr | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Evaporation | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean | 127.8 | 167.3 | 217.2 | 231.8 | 207.9 | 151.2 | 153.8 | 145.2 | 153.0 | 90.7 | 134.9 | 133.0 | 1913.8 | ||
| Wind | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Prevailing direction | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean speed ( m/s ) | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Sunshine duration ( hr ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Extreme Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean | 7.6 | 8.4 | 9.1 | 9.3 | 7.2 | 4.7 | 5.3 | 3.5 | 5.1 | 3.5 | 6.9 | 7.1 | 6.5 | ||
| Remark : "-" indicate missing data | Argometeorological analysis sub-division , Agrometeorology division data | ||||||||||||||
| processing sub-division , Climatology division meteorological department | |||||||||||||||