Hangzhou along the eastern coast has a humid subtropical monsoon climate which has temperate and humid weather; adequate sunshine, heat and precipitation; and four distinct seasons. With the change of the seasons and of the winter and summer monsoons, a climate comes into being featuring rainy spring, hot and humid summer, crisp autumn, dry and cold winter. The sunshine, heat and precipitation match well with each other. Starting from spring, solar radiation, temperature and precipitation rise from day to day. At the turn of spring and summer in June, precipitation reached its peak, accompanies by temperature rise. At the height of summer in July and August under the control of the subtropical high pressure precipitation reduces and the hottest part of summer arrives. When summer turns gradually into autumn in September, there is simultaneous reduction in sunshine, heat and precipitation. When the autumn rainy season comes under the dual impact of the tropical storm (Typhoon) and cold air, the summer drought is greatly eased. In October and November the continental cold high takes control, the weather clears up with abundant sunshine, large day-night temperature difference and better sunshine and heat conditions than in spring. In the coolest season of winter, the sunshine, heat and precipitation reach the lowest point.

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Pressure (hPa)	10217	10195	10157	10103	10062	10016	9999	10012	10081	10148	10193	10220

Pressure (hPa)
10217	10195	10157	10103	10062	10016	9999	10012	10081	10148	10193	10220
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.1 monthly mean pressure

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Temp (oF)	39.7	42.2	49.2	60.4	69.2	75.9	83.1	82.2	74.1	64.9	54.3	44.2
Temp (oC)	4.3	5.7	9.6	15.8	20.7	24.4	28.4	27.9	23.4	18.3	12.4	6.8

Temperature (oC|oF)
4.3 oC 39.7 oF	5.7 oC 42.2 oF	9.6 oC 49.2 oF	15.8 oC 60.4 oF	20.7 oC 69.2 oF	24.4 oC 75.9 oF	28.4 oC 83.1 oF	27.9 oC 82.2 oF	23.4 oC 74.1 oF	18.3 oC 64.9 oF	12.4 oC 54.3 oF	6.8 oC 44.2 oF
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.2 monthly mean temperature

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Min Temp (oF)	34.7	36.8	43.5	53.7	62.6	69.9	76.8	76.1	68.5	59	48	38.1
Min Temp (oC)	1.5	2.7	6.4	12.1	17	21.1	24.9	24.5	20.3	15	8.9	3.4
Max Temp (oF)	46.4	48.9	56.6	69	77.9	83.4	91.4	90.3	81.5	72.8	62.2	51.9
Max Temp (oC)	8	9.4	13.7	20.6	25.5	28.6	33	32.4	27.5	22.7	16.8	11.1

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Min Temp (oF)	16.5	20.8	28.5	32.3	48.2	55	63.5	65.6	53.6	39.2	28.4	16.8
Min Temp (oC)	-8.6	-6.2	-1.9	.2	9	12.8	17.5	18.7	12	4	-2	-8.4
Max Temp (oF)	73	82.5	86.7	91.5	96	99.3	103.8	102.2	101.6	95	83.6	75.5
Max Temp (oC)	22.8	28.1	30.4	33.1	35.6	37.4	39.9	39	38.7	35	28.7	24.2

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hunidity (%)	76	76	78	76	76	82	78	79	81	78	74	72

Hunidity (%)
76	76	78	76	76	82	78	79	81	78	74	72
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.3 monthly mean hunidity

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Hunidity (%)	10	14	8	15	13	23	34	34	20	21	13	11

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	73.2	84.2	138.2	126.6	146.6	231.1	159.4	155.8	145.2	87	60.1	47.1
Days (Precipitation<0.1mm)	12.4	12.3	16.3	15.2	14.6	15.2	13	13.6	12.6	10	8.6	8.1
Days (Precipitation<10mm)	2.5	2.9	5.1	4.7	4.9	6.6	4.7	4.5	4.5	2.9	2	1.5
Days (Precipitation<25mm)	.4	.5	1.1	1	1.8	3.4	1.9	1.8	2	.9	.5	.2
Days (Precipitation<50mm)	0	0	.1	.1	.3	1.1	.7	.6	.4	.1	.1	0

Precipitation (mm)
73.2	84.2	138.2	126.6	146.6	231.1	159.4	155.8	145.2	87	60.1	47.1
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.4 monthly mean precipitation

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (mm)	56.7	50	96	90.3	85.2	136.4	109.6	127.2	103.5	80.9	66.8	42.9

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wind Speed (m/s)	2.3	2.4	2.4	2.4	2.3	2.3	2.5	2.5	2.4	2.2	2.2	2.2

Wind Speed (m/s)
2.3	2.4	2.4	2.4	2.3	2.3	2.5	2.5	2.4	2.2	2.2	2.2
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.5 monthly mean wind speed

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Wind Speed (m/s)	12.3	15	15	17	16.7	13.7	14	23	14	13	13	12.7

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Duration (hour)	107.2	99.1	109.5	140.6	163.3	141.9	216.1	209.5	147.2	148.3	137.6	136.2

Duration (hour)
107.2	99.1	109.5	140.6	163.3	141.9	216.1	209.5	147.2	148.3	137.6	136.2
Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

fig.5 monthly mean sunshine duration

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Percentage (%)	33	32	30	37	39	34	50	51	40	42	43	43

Remarks:
Weather forecast is provided by China Meteorological Administration.
Climate information is based on monthly averages for 30-year period of 1971-2000.
Precipitation includes both rain and snow.

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