Home   Weather   India   Siwan   Climate
Flag for India

Climate & Weather Averages in Siwan, Bihar, India

Currently: 81 °F. Passing clouds. (Weather station: Daltonganj, India). See more current weather

Annual Weather Averages in Varanasi / Babatpur

Varanasi / Babatpur is 108 miles from Siwan, so the actual climate in Siwan can vary a bit.

Based on weather reports collected during 2012–2021.

Jan
70
49
0.13
Feb
80
55
0.17
Mar
91
63
0.31
Apr
102
73
0.33
May
105
79
1.03
Jun
102
83
3.48
Jul
94
80
8.06
Aug
93
80
7.15
Sep
93
78
5.7
Oct
91
71
1.31
Nov
84
59
Dec
74
51
0.18

All Year Climate & Weather Averages in Siwan

High Temp: 105 °F

Low Temp: 49 °F

Mean Temp: 79 °F

Precipitation: 2.32"

Humidity: 66%

Dew Point: 65 °F

Wind: 8 mph

Pressure: 29.75 "Hg

Visibility: 2 mi

January Climate & Weather Averages in Siwan

High Temp: 70 °F

Low Temp: 49 °F

Mean Temp: 60 °F

Precipitation: 0.13"

Humidity: 79%

Dew Point: 52 °F

Wind: 6 mph

Pressure: 30.02 "Hg

Visibility: 1 mi

February Climate & Weather Averages in Siwan

High Temp: 80 °F

Low Temp: 55 °F

Mean Temp: 68 °F

Precipitation: 0.17"

Humidity: 66%

Dew Point: 55 °F

Wind: 7 mph

Pressure: 29.96 "Hg

Visibility: 2 mi

March Climate & Weather Averages in Siwan

High Temp: 91 °F

Low Temp: 63 °F

Mean Temp: 77 °F

Precipitation: 0.31"

Humidity: 53%

Dew Point: 57 °F

Wind: 8 mph

Pressure: 29.85 "Hg

Visibility: 2 mi

April Climate & Weather Averages in Siwan

High Temp: 102 °F

Low Temp: 73 °F

Mean Temp: 87 °F

Precipitation: 0.33"

Humidity: 39%

Dew Point: 58 °F

Wind: 10 mph

Pressure: 29.70 "Hg

Visibility: 2 mi

May Climate & Weather Averages in Siwan

High Temp: 105 °F

Low Temp: 79 °F

Mean Temp: 92 °F

Precipitation: 1.03"

Humidity: 44%

Dew Point: 66 °F

Wind: 11 mph

Pressure: 29.59 "Hg

Visibility: 2 mi

June Climate & Weather Averages in Siwan

High Temp: 102 °F

Low Temp: 83 °F

Mean Temp: 92 °F

Precipitation: 3.48"

Humidity: 58%

Dew Point: 74 °F

Wind: 11 mph

Pressure: 29.47 "Hg

Visibility: 2 mi

July Climate & Weather Averages in Siwan

High Temp: 94 °F

Low Temp: 80 °F

Mean Temp: 87 °F

Precipitation: 8.06"

Humidity: 78%

Dew Point: 78 °F

Wind: 10 mph

Pressure: 29.47 "Hg

Visibility: 2 mi

August Climate & Weather Averages in Siwan

High Temp: 93 °F

Low Temp: 80 °F

Mean Temp: 86 °F

Precipitation: 7.15"

Humidity: 80%

Dew Point: 79 °F

Wind: 9 mph

Pressure: 29.53 "Hg

Visibility: 2 mi

September Climate & Weather Averages in Siwan

High Temp: 93 °F

Low Temp: 78 °F

Mean Temp: 86 °F

Precipitation: 5.70"

Humidity: 79%

Dew Point: 78 °F

Wind: 8 mph

Pressure: 29.65 "Hg

Visibility: 2 mi

October Climate & Weather Averages in Siwan

High Temp: 91 °F

Low Temp: 71 °F

Mean Temp: 81 °F

Precipitation: 1.31"

Humidity: 71%

Dew Point: 71 °F

Wind: 5 mph

Pressure: 29.81 "Hg

Visibility: 2 mi

November Climate & Weather Averages in Siwan

High Temp: 84 °F

Low Temp: 59 °F

Mean Temp: 72 °F

Precipitation: 0.00"

Humidity: 67%

Dew Point: 59 °F

Wind: 5 mph

Pressure: 29.93 "Hg

Visibility: 1 mi

December Climate & Weather Averages in Siwan

High Temp: 74 °F

Low Temp: 51 °F

Mean Temp: 62 °F

Precipitation: 0.18"

Humidity: 75%

Dew Point: 53 °F

Wind: 5 mph

Pressure: 30.01 "Hg

Visibility: 1 mi

Quick Climate Info

Hottest MonthJune (92 °F avg)
Coldest MonthJanuary (60 °F avg)
Wettest MonthJuly (8.06" avg)
Windiest MonthMay (11 mph avg)
Annual precip.27.85" (per year)

Weather by CustomWeather, © 2025