MARIEHAMN, FINLAND

Average Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5		-2		-3		-1		2		8		12		15		14		10		6		2		-1

Average High Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8		---		-1		1		5		12		16		18		17		13		8		4		1

Average Low Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2		-5		-6		-3		---		4		8		11		11		7		3		---		-3

Highest Recorded Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31		11		10		12		21		23		28		29		31		25		18		17		8

Lowest Recorded Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-32		-32		-32		-21		-10		-6		---		2		1		-6		-11		-16		-28

Average Number of Days Above 65F/18C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43		---		---		---		---		3		9		17		13		1		---		---		---

Average Number of Days Above 50F/10C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158		---		---		1		4		23		30		31		31		27		12		1		---

Average Number of Days Below 32F/0C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		140		24		24		25		17		4		---		---		---		2		7		14		23

Average Number of Days Below 0F/-17C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		2		3		1		---		---		---		---		---		---		---		---		1

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		510		40		20		20		20		30		30		40		70		60		50		60		40

Average Number of Days With Thunderstorms

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		---		---		---		---		1		1		1		2		1		---		---		---

Most Rain Reported in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		730		90		80		50		50		60		60		100		120		170		110		170		80

Least Recorded Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		370		10		---		---		---		---		---		20		10		10		30		30		10

Heating Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5240.9		654.4		627.8		602.8		475		310		175		94.7		120.6		241.7		378.9		475		602.8

Growing Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		384.7		---		---		---		---		---		75		163.6		137.8		8.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13.3		7.7		10		12.6		15.5		18.4		20.5		19.2		16.4		13.5		10.8		8.3		6.9

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		160		11		13		17		13		12		13		16		17		13		14		11		10

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		1.1		3.6		8.6		15.2		21.6		23		21.7		16.6		10.4		4.6		1.7		0.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		0.8		2.3		4.8		7.2		8.9		9.9		9.4		8		5.4		2.9		1.2		0.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.9		2.8		6.8		12.5		17.3		20.3		19.7		19.4		17.1		13.6		7.6		4.1		1.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		2.6		5.9		11.3		18.4		25.7		25.8		24.5		18.5		13.4		6.8		3.6		1.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		1.1		3.6		8.6		15.2		21.6		23		21.7		16.6		10.4		4.6		1.7		0.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		1		2.6		5.3		7.3		9		10		9.5		8.5		5.9		3.1		1.3		0.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.2		3.6		8.7		16.2		19.7		23.2		22.8		22.5		20.8		16.7		8.7		4.9		2.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		3.6		7.6		14.6		22.2		31.7		32.9		31.4		24.4		17.4		8		4.4		2.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.8		0.9		3.1		6.9		12.3		18.3		17.9		18.2		13		8.3		3.9		1.5		0.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.9		0.7		2		4.4		7.1		8.6		9.7		9.1		7.9		5		2.6		1.1		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.3		1.8		5.5		9.1		13.2		17		15.3		16.1		12.7		10.2		6.1		3.2		1.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.9		1.5		4.6		7.6		11.9		18.9		15.8		17.6		10.9		9		5.3		2.7		1.2