AGROCLIMATOGICAL DATA 2009
	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 temperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Extreme Maximum	34.0	37.0	37.2	37.5	36.8	36.0	35.0	36.2	35.0	34.0	35.2	34.5	37.5
	Date	26	17	13	16	8	13	12	22	10	27	16	27	16-Apr
	Mean Maximum	29.7	34.7	35.5	35.5	33.5	32.8	32.0	33.4	32.8	32.2	31.5	32.2	33.0
	Mean	24.2	28.3	29.8	30.6	29.4	29.0	28.5	29.3	28.9	28.4	26.9	26.7	28.3
	Mean Minimum	18.5	21.9	24.1	25.6	25.3	25.0	25.0	25.1	25.0	24.6	22.4	21.2	23.6
	Extreme Minimum	12.8	18.5	21.3	22.5	23.4	23.4	23.5	23.5	24.0	22.2	18.0	18.0	12.8
	Date	12	16	15	1	5	13	7	23	10	11	24	7	12-Jan
	Grass minimumtemperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Mean Minimum	16.1	19.5	22.6	24.3	24.1	23.8	23.8	24.0	23.9	23.5	20.8	19.3	22.1
	Extreme Minimum	10.2	14.5	20.0	22.5	21.0	22.5	22.4	22.8	23.0	22.0	16.5	14.5	10.2
	Date	12	15	15	1	5	13	9	20	22	11	25	7	12-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	89	92	92	90	93	95	94	95	95	96	93	93	186
	Mean	65	64	66	68	73	76	77	75	76	78	71	69	143
	Mean Minimum	43	36	40	46	54	57	60	56	58	61	50	45	101
	Extreme Minimum	-	-	-	-	-	-	-	-	-	-	-	-	-
	Date	-	-	-	-	-	-	-	-	-	-	-	-	-
	Soil temperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Mean at surface	24.7	29.6	31.8	31.3	29.8	28.6	28.3	29.2	28.9	28.7	27.4	28.3	28.9
	Mean at 5 cm	25.8	30.0	32.5	32.2	30.7	29.4	28.9	30.0	29.6	29.5	28.5	29.0	29.7
	Mean at 10 cm	26.6	29.9	32.3	32.2	30.5	29.1	28.7	29.8	29.5	29.5	28.7	29.2	29.7
	Mean at 20 cm	26.6	29.7	32.4	32.7	30.9	29.4	29.0	30.0	29.8	29.6	28.8	29.2	29.8
	Mean at 50 cm	27.0	29.8	32.7	33.2	31.8	30.2	29.6	30.3	30.3	29.9	29.3	29.2	30.3
	Mean at 100 cm	27.7	29.4	31.9	32.9	32.3	30.9	-	-	-	30.0	29.5	29.2	30.4
	Rainfall ( mm )	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Total amount	0.0	0.0	99.7	34.6	141.8	109.5	171.0	107.0	161.5	242.4	22.2	0.0	1,089.7
	Number of rainy day	0	0	4	6	17	15	16	12	18	18	3	0	109
	Greatest in 24 hr	-	-	-	-	-	-	-	-	-	-	-	-	-
	Date	-	-	-	-	-	-	-	-	-	-	-	-	-
	Evaporation	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Mean	-	-	78.0	186.5	149.6	130.2	128.4	144.8	133.9	128.8	133.9	119.7	133.4
	Wind	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
	Prevailing direction	6.9/N	4.5/SE	4.7/SE	7.0/W	3.5/NW	1.3/S	1.3/W	1.7/W	1.7/W	1.3/NW	2/NW	1.3/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	8.4	8.4	7.4	8.6	4.8	4.3	4.3	4.8	4.8	4.3	4.0	4.0	5.7
	Remark : "-" indicate missing data	Argometeorological analysis sub-division , Agrometeorology division data
		processing sub-division , Climatology division meteorological department