AGROCLIMATOGICAL
DATA 2003 |
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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 | 34.3 | 37.0 | 28.5 | 40.0 | 39.0 | 37.3 | 36.6 | 35.5 | 35.0 | 34.5 | 35.0 | 33.4 | 40.0 | ||
| Date | 26 | 25 | 5 | 14 | 7 | 10 | 18 | 16 | 18 | 11 | 9 | 25 | 14-Apr | ||
| Mean Maximum | 31.7 | 34.9 | 35.1 | 37.5 | 34.9 | 34.4 | 32.6 | 33.5 | 32.7 | 31.1 | 32.7 | 30.2 | 33.4 | ||
| Mean | 25.5 | 28.4 | 29.5 | 31.7 | 30.2 | 29.7 | 28.6 | 29.2 | 28.6 | 27.6 | 27.7 | 24.7 | 28.5 | ||
| Mean Minimum | 19.3 | 22.0 | 23.9 | 25.0 | 25.5 | 25.0 | 24.6 | 24.9 | 24.5 | 24.1 | 22.8 | 19.2 | 23.4 | ||
| Extreme Minimum | 15.4 | 17.7 | 21.5 | 23.2 | 24.0 | 23.9 | 22.9 | 23.5 | 23.6 | 22.9 | 20.3 | 15.9 | 15.4 | ||
| Date | 14 | 8 | 15 | 7 | 4,10 | 26 | 25 | 31 | 6,26 | 31 | 30 | 21 | 14-Jan | ||
| Grass minimumtemperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Minimum | 17.5 | 19.1 | 22.2 | 23.6 | 24.5 | 24.1 | 23.8 | 23.9 | 23.6 | 23.4 | 21.8 | 17.9 | 22.1 | ||
| Extreme Minimum | 14.0 | 14.0 | 18.2 | 22.0 | 22.5 | 22.0 | 21.7 | 23.0 | 23.0 | 22.0 | 19.0 | 14.0 | 14.0 | ||
| Date | 25 | 8 | 5 | 7 | 4 | 26 | 25 | 5 | 1,25 | 3 | 30 | 22 | 8,22 | ||
| Water temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean | 25.8 | 28.4 | 29.5 | 31.0 | 30.1 | 30.3 | 29.4 | 30.0 | 29.3 | 28.7 | 27.9 | 24.4 | 28.7 | ||
| Mean Minimum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Relative humidity ( % ) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Extreme Maximum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Mean Maximum | 92 | 92 | 92 | 93 | 91 | 92 | 92 | 92 | 96 | 97 | 92 | 90 | 93 | ||
| Mean | 67 | 66 | 68 | 67 | 71 | 72 | 75 | 74 | 79 | 82 | 70 | 67 | 72 | ||
| Mean Minimum | 41 | 40 | 44 | 40 | 51 | 52 | 58 | 55 | 61 | 67 | 48 | 44 | 50 | ||
| Extreme Minimum | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Soil temperature (celcuis) | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean at surface | 27.8 | 31.0 | 32.3 | 34.5 | 30.9 | 30.0 | 29.1 | 29.5 | 28.9 | 28.7 | 29.2 | 26.8 | 29.9 | ||
| Mean at 5 cm | 27.6 | 30.6 | 32.3 | 34.7 | 32.0 | 31.1 | 29.9 | 30.3 | 29.9 | 29.4 | 29.9 | 27.9 | 30.5 | ||
| Mean at 10 cm | 28.1 | 31.2 | 32.6 | 35.0 | 31.7 | 31.1 | 29.9 | 30.3 | 29.8 | 29.3 | 29.8 | 27.7 | 30.5 | ||
| Mean at 20 cm | 27.9 | 30.9 | 32.9 | 34.6 | 34.1 | 31.2 | 29.4 | 30.0 | 29.2 | 28.5 | 29.2 | 27.9 | 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 | 0.0 | 27.7 | 20.1 | 113.4 | 152.9 | 212.7 | 183.8 | 220.4 | 287.6 | T | 0.0 | 1218.6 | ||
| Number of rainy day | 0 | 0 | 6 | 3 | 17 | 16 | 18 | 15 | 20 | 14 | 0 | 0 | 109 | ||
| Greatest in 24 hr | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Date | - | - | - | - | - | - | - | - | - | - | - | - | |||
| Evaporation | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Mean | 135.5 | 145.6 | 160.8 | 197.8 | 168.4 | 153.8 | 130.6 | 158.6 | 125.6 | 98.2 | 124.9 | 135.9 | 1735.7 | ||
| Wind | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | ||
| Prevailing direction | 1/N | 1/SE | 1/SE | 1/SE | 1/W | 1/S | 1/W | 1/W | 1/NW | 1/NW | 1/NW | 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 | 7.9 | 9.0 | 7.0 | 9.6 | 6.1 | 5.3 | 4.9 | 4.4 | 4.1 | 4.8 | 7.8 | 7.9 | 6.6 | ||
| Remark : "-" indicate missing data | Argometeorological analysis sub-division , Agrometeorology division data | ||||||||||||||
| processing sub-division , Climatology division meteorological department | |||||||||||||||