CALCUTTA, INDIA

Average Temperature

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26.7		19.9		22.8		27.6		30.3		30.8		30.1		29.1		29		29		27.8		24.1		20.3

Average High Temperature

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31.4		26		29		33.7		35.7		35.5		33.7		32		31.8		32		31.7		29.3		26.4

Average Low Temperature

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22		13.7		16.6		21.4		24.9		26.1		26.5		26.2		26.1		25.9		23.9		18.8		14.2

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		43		32		37		42		41		43		42		37		39		37		36		32		31

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5		8		7		11		16		18		21		22		18		17		15		12		5

Average Number of Days Above 90F/32C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		156		---		3		20		28		28		20		14		13		15		13		2		---

Average Number of Days Above 80F/26C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		311		9		21		30		30		31		30		31		31		30		30		27		11

Average Precipitation

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1651.4		13.3		25.6		33.3		51.2		126.2		282.4		339.8		333.2		277.2		138.9		23.9		6.4

Average Number of Days With Thunderstorms

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60		---		2		3		6		8		9		8		9		10		5		---		---

Most Rain Reported in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2180		30		70		100		180		400		750		660		460		610		340		180		130

Least Recorded Rainfall

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1120		---		---		---		---		---		70		150		110		100		---		---		---

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		91		91		88		88		90		90		92		94		94		94		93		90		90

Average Evening Relative Humidity

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58		44		43		41		50		59		71		78		79		76		62		49		45

Average Dew Point

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21		12		15		18		23		25		26		26		26		25		23		18		13

Cooling Degree Days

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3114.7		47.4		126.3		285.9		359.2		386.7		353.3		334.1		328.9		318.3		293.7		170.8		61.2

Growing Degree Days

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6327.6		305.7		361.8		544.2		600		620		600		592.4		587.3		568.3		552		420.8		319.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.3		11.8		12.4		13.1		13.6		13.9		13.8		13.3		12.6		12		11.4		11.2

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71		16		10		7		2		1		---		1		1		3		7		8		15

Average Wind Speed

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		6		4		4		6		8		9		8		6		6		6		4		4		4

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		15.3		17.9		20.7		22.2		21.3		17.5		15.7		15.4		14.7		15.8		15.5		15

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.5		4		4.8		6		7.2		8.4		9		8.8		8.3		7.5		6		4.4		3.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.3		18.7		21		22.1		21.6		19.7		17.1		14.5		14.6		14.8		17.5		19.1		19

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.6		21.9		22.7		23		22		18.5		12.2		9.8		10.3		11		16.4		20.8		23

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		15.3		17.9		20.7		22.2		21.3		17.5		15.7		15.4		14.7		15.8		15.5		15

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7		4.9		5.5		6.8		7.7		8.7		9.1		8.9		8.4		7.5		6.4		5.1		4.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.4		20.8		23		25.1		23.8		21.8		18.9		15.8		16.4		17.9		20.1		21.3		20.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.4		25.8		26.2		28.6		26.4		23		14.8		11.7		13		15.7		20.6		24.5		26.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.9		12.5		16.1		18.1		20.6		19.5		15		12.9		13.1		13.3		12.5		13.1		12.2

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6		3.5		4.2		4.9		6.4		7.8		8.9		8.4		8.1		7.3		5.5		3.8		3.1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		14.7		18.5		19		19.9		18.1		14.6		12.1		12.5		13.3		13.4		15.7		14.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		14.9		18.3		17.7		18.8		15.5		8.8		6.4		7.3		8.9		10.2		15.1		15.6