AGROCLIMATOGICAL DATA 2018
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	35.1	36.3	37.0	38.5	36.6	35.1	35.4	35.2	36.6	35.0	34.5	35.1	38.5
Date	28	16	7	15	9	18	1	23	28	18	21	3	15 Apr.
Mean Maximum	32.0	33.1	35.1	34.9	34.7	33.3	33.3	32.8	33.7	32.8	32.1	31.8	33.3
Mean	26.9	27.5	29.6	29.6	29.9	29.2	29.3	28.9	29.1	28.9	28.0	27.8	28.7
Mean Minimum	21.8	21.8	24.1	24.3	25.1	25.0	25.2	24.9	24.5	25.0	23.9	23.8	24.1
Extreme Minimum	16.3	17.7	20.0	21.4	23.5	23.6	24.0	23.9	23.4	22.2	21.0	21.4	16.3
Date	14	7	16	8	11	28	5	28	26	31	2	27	14 Jan.
Grass minimumtemperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean	19.8	19.4	22.6	23.1	24.1	23.9	24.2	23.9	23.9	24.0	22.3	22.2	22.8
Extreme Minimum	13.9	14.6	17.7	19.5	22.6	22.2	23.0	23.0	22.2	21.5	18.0	20.1	13.9
Date	14	7	16	9	2	23	5	2	26	31	2	26	14 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	94.0	94.0	92.0	92.0	92.0	93.0	93.0	92.0	91.0	90.0	90.0	89.0	91.8
Mean	71.0	68.0	69.0	69.0	72.0	74.0	73.0	71.0	70.0	72.0	70.0	70.0	70.8
Mean Minimum	48.0	41.0	44.0	46.0	53.0	54.0	53.0	51.0	50.0	53.0	50.0	51.0	49.5
Extreme Minimum	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-	-
Soil temperature (celcuis)	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean at surface	26.7	27.7	30.4	30.8	30.1	29.2	29.2	28.5	29.1	29.3	28.3	27.8	28.9
Mean at 5 cm	27.1	28.2	30.7	31.2	30.7	29.6	29.6	28.9	29.5	29.8	28.9	28.4	29.4
Mean at 10 cm	27.7	28.6	31.1	31.8	31.2	30.0	30.0	29.4	29.9	30.2	29.5	29.0	29.9
Mean at 20 cm	27.7	28.7	31.0	31.4	31.5	30.3	30.2	29.5	29.8	30.3	29.5	28.9	29.9
Mean at 50 cm	28.3	29.2	31.5	32.4	32.1	31.0	30.8	30.2	30.6	30.9	30.2	29.7	30.6
Mean at 100 cm	27.9	28.9	30.7	32.0	31.6	30.9	30.5	30.1	30.1	30.5	30.0	29.6	30.2
Rainfall ( mm )	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Total amount	6.0	13.3	56.5	121.2	130.4	86.9	22.0	38.5	182.8	306.5	34.3	27.9	1,026.3
Number of rainy day	2	3	1	5	11	15	10	19	17	18	5	4	113
Greatest in 24 hr	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-	-
Evaporation	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean	3.00	3.60	5.00	5.20	4.90	3.50	4.00	4.10	4.20	3.76	3.69	3.56	4.04
Wind	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Prevailing direction	4.3/N	4.0/SE	4.0/SE	4.7/SSE	3.6/SE	4.3/W	4.7/W	5.0/W	5.0/NW	4.3/NW	5.4/NW	6.5/N
Mean speed ( m/s )	-	-	-	-	-	-	-	-	-	-	-	-
Sunshine duration ( hr )	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Extreme Maximum	-	-	-	-	-	-	-	-	-	-	-	-	-
Date	-	-	-	-	-	-	-	-	-	-	-	-	-
Mean	9.0	9.2	9.5	9.8	10.3	10.0	9.8	8.0	9.1	10.0	10.2	9.6	9.5
Remark : "-" indicate missing data	Argometeorological analysis sub-division , Agrometeorology division data
	processing sub-division , Climatology division meteorological department