DUNKERQUE, FRANCE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.3		5		5.2		7.5		9.7		12.9		15.7		18.1		18.4		16.2		12.8		8.7		5.8

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.8		7.1		7.4		9.9		12.4		15.6		18.4		20.9		21.3		19		15.4		10.9		7.8

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8.8		2.9		2.9		5		6.9		10.1		12.9		15.2		15.5		13.4		10.1		6.5		3.7

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		38.3		15		19		24		28.4		34		34.4		38.3		36.2		33.5		30		19.5		16.6

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-18		-13.4		-18		-7		-2		-1		4		6.6		4		4		-2.4		-8		-10.6

Average Number of Days Above 70F/21C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26		---		---		---		1		1		2		7		10		4		1		---		---

Average Number of Days Above 60F/15C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		131		---		---		1		2		9		20		30		30		25		11		1		---

Average Number of Days Below 32F/0C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		21		6		7		2		---		---		---		---		---		---		---		2		4

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		697.8		55		41.2		46.9		43.2		50.4		56.5		58.4		59.3		67		78		74.8		67.1

Average Number of Days With Precipitation

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		152		15		11		15		13		12		11		10		10		12		13		15		15

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		79.1		24.6		27		23.7		32.3		55		45.2		48		79.1		61.6		38.6		49.2		29.4

Average Number of Rainy Days

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		148		14		10		14		13		12		11		10		10		12		13		15		14

Average Number of Days With Thunderstorms

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4		---		---		---		---		1		1		1		1		---		---		---		---

Average Number of Days With Snow

Years on Record: 15

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

Average Morning Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		87		87		87		86		85		85		86		86		87		87		88		87		87

Average Evening Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77		83		79		77		76		74		75		75		74		73		76		81		83

Average Dew Point

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7		2		1		3		5		8		11		13		13		12		9		5		3

Heating Degree Days

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3030.7		421.9		392.4		361.7		291.7		189.4		108.3		25.8		17.2		75		180.8		300		370.3

Growing Degree Days

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		936.7		---		---		---		---		68.9		141.7		232.5		241.1		175		77.5		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.2		10.6		12.5		14.5		16.3		17.2		16.7		15.1		13.1		11.2		9.5		8.7

Average Number of Days With Fog

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		105		9		10		10		9		10		8		7		8		7		9		9		9

Average No. of Days With Vision Obstruction

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106		9		11		10		9		10		8		7		8		7		9		9		9

Average Wind Speed

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		25		33		20		27		28		20		22		22		22		25		17		32		32

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.4		3.1		5.7		10		15.7		19.7		20.7		20.2		17.7		11.7		6.9		3.6		2.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		2		3.4		5.6		7.5		9.1		9.8		9.4		8		6		3.8		2.3		1.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		5.2		8.6		12.3		16.6		18.1		17.8		18		17.7		13.6		9.6		5.8		3.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.7		4.6		7.5		10.5		15.7		18.5		18.5		18.6		17.7		12.3		8.6		5		3.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.4		3.1		5.7		10		15.7		19.7		20.7		20.2		17.7		11.7		6.9		3.6		2.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6		2.2		3.8		6		7.6		9.5		9.9		9.5		8.1		6.4		4.2		2.7		1.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.9		6		10.7		15.4		20.6		22.8		20.1		21		20.9		16.8		11.4		8.2		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		15.6		5.5		9.8		14.3		22		26.3		23.2		24.4		22.9		16.4		10.6		7.3		4.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.5		2.6		4.9		8.5		13.2		15.6		17.9		17		15.5		10		4.5		2.9		1.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		1.8		3		5.2		7.4		9		9.7		9.3		8		5.7		3		2		1.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.8		4		7.1		10		13.5		14.2		15.5		15.1		15.2		11.3		5.8		4.3		2.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.1		3.3		5.9		7.7		10.8		11.2		13.6		12.9		13.6		9.4		4.4		3.5		1.4