AGROCLIMATOGICAL DATA 2012
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	34.8	36.0	37.5	39.2	39.0	35.5	36.0	35.1	33.5	34.0	34.6	34.4	39.2
Date	23	27	30	26	2	25	2	5	10	5	10	17	26-Apr
Mean Maximum	32.4	34.2	35.6	36.8	34.9	33.7	32.9	32.8	31.9	32.1	31.8	32.4	33.5
Mean	27.6	28.7	30.0	31.1	30.1	29.5	28.8	28.8	28.4	28.3	28.0	27.6	28.9
Mean Minimum	22.6	23.1	24.3	25.4	25.3	25.4	24.6	24.7	24.8	24.5	24.2	22.7	24.3
Extreme Minimum	18.7	20.9	21.0	23.5	24.5	24.0	23.6	23.6	23.5	22.6	22.6	20.1	18.7
Date	9	22	21	3	5	22	15	14	27	31	2	25	9-Jan
Grass minimumtemperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean	-	-	22.7	24.1	24.5	24.0	23.8	23.7	23.8	23.6	23.1	21.0	19.5
Extreme Minimum	-	-	17.6	21.8	23.5	22.0	22.1	22.5	22.5	21.7	21.5	17.5	17.5
Date	-	-	21	3	11	5	23	14	9	31	2	25	25-Dec
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	93.5	95.5	95.0	99.5	98.7	96.4	95.2	95.4	-	96.6	95.9	91.1	88.0
Mean	70.8	71.1	68.7	72.9	76.2	76.4	74.8	76.7	-	78.4	78.9	69.0	68.0
Mean Minimum	48.3	46.8	42.3	46.2	53.6	56.3	54.3	58.3	-	60.4	62.1	46.9	48.0
Extreme Minimum	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-	-
Soil temperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean at surface	28.5	29.9	31.8	32.8	30.5	29.9	29.2	29.0	28.9	29.3	28.9	28.6	29.8
Mean at 5 cm	0.0	0.0	0.0	0.0	0.0	13.7	29.2	29.0	28.7	29.1	28.9	28.5	15.6
Mean at 10 cm	28.9	30.3	32.2	33.4	31.7	31.0	29.8	29.4	29.3	29.8	29.4	29.0	30.3
Mean at 20 cm	28.5	30.0	31.9	33.4	32.1	31.5	30.2	29.9	29.7	30.0	29.6	29.0	30.5
Mean at 50 cm	28.7	30.2	32.2	33.6	33.0	32.3	31.1	30.7	30.5	30.6	30.4	29.7	31.1
Mean at 100 cm	28.5	29.9	31.4	32.5	32.7	31.9	31.2	30.5	30.4	30.4	30.3	29.7	30.8
Rainfall ( mm )	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total amount	13.2	-	20.6	0.6	193.7	12.4	127.9	131.9	264.0	135.3	128.7	-	1,028.3
Number of rainy day	4	0	3	1	15	8	21	17	21	11	13	0	114
Greatest in 24 hr	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-
Evaporation	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean	131.9	142.8	190.8	203.4	194.0	159.8	136.3	142.1	145.9	109.9	85.3	121.2	1,763.4
Wind	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Prevailing direction	4.8/SE	4.2/SSE	4.3/SSE	5.5/SSE	4.7/SSE	5.3/W	3.8/W	4.7/W	4.9/N	3.8/NNE	3.4/SSE	4.4/NNW
Mean speed ( m/s )	-	-	-	-	-	-	-	-	-	-	-	-
Sunshine duration ( hr )	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Extreme Maximum	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-
Mean	6.2	8.4	6.9	8.1	6.3	4.1	3.7	3.3	3.8	5.6	5.5	7.4	5.8
Remark : "-" indicate missing data	Argometeorological analysis sub-division , Agrometeorology division data
	processing sub-division , Climatology division meteorological department