YOKOSUKA, JAPAN

Average Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16		6		6		8		14		18		21		25		27		23		17		13		8

Average High Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19		10		10		12		17		22		24		27		30		26		20		16		12

Average Low Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12		2		2		5		10		14		18		21		23		20		15		10		5

Highest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41		22		23		23		27		32		37		38		41		37		32		27		25

Lowest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-3		-3		-3		-2		1		7		10		13		15		12		6		2		-1

Average Number of Days Above 90F/32C

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15		---		---		---		---		---		1		4		8		2		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		161		---		---		---		7		21		26		30		31		28		15		4		---

Average Number of Days Below 32F/0C

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11		5		4		1		---		---		---		---		---		---		---		---		1

Average Precipitation

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1600		50		70		120		130		160		210		130		130		190		190		110		50

Average Number of Days With Thunderstorms

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		---		1		1		1		2		1		---		1		1

Most Rain Reported in a Month

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2070		150		180		210		230		380		490		460		320		430		490		280		230

Least Recorded Rainfall

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1000		---		---		10		50		50		80		20		---		20		30		20		---

Average Morning Relative Humidity

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		79		67		68		73		79		82		88		90		88		86		81		75		70

Average Evening Relative Humidity

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		65		53		55		59		64		66		74		75		71		73		70		63		56

Average Dew Point

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		10		-1		-1		2		8		13		17		21		22		18		13		7		1

Heating Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1819.7		370.3		337.4		292.8		125		---		---		---		---		---		17.2		150		292.8

Cooling Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		698.1		---		---		---		---		---		91.7		198.1		258.3		150		---		---		---

Growing Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2439.2		---		---		---		125		258.3		341.7		456.4		516.7		400		241.1		100		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.6		11.4		12.4		13.5		14.5		15		14.7		13.9		12.8		11.7		10.8		10.3

Average Number of Days With Fog

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		191		9		10		15		16		18		21		20		17		19		20		15		11

Average Wind Speed

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		19		19		19		19		20		19		17		17		17		17		20		17		17

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		10.3		12.8		14.4		17.3		17.7		15.6		16.4		17.1		12.7		10.6		9.1		9.1

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		3		4.1		5.9		7.4		8.7		9		8.7		7.8		6.5		5		3.7		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		16		16.8		16.3		17.2		16.3		14		14.9		16.4		13.2		12.7		12.7		14.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14		18.1		18.2		15.2		15.6		13.6		9.9		11.6		14.3		10.4		11		12.9		16.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		10.3		12.8		14.4		17.3		17.7		15.6		16.4		17.1		12.7		10.6		9.1		9.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		3.4		4.6		6.2		7.6		8.7		9.1		8.9		8		6.6		5.1		3.8		3.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.2		18.8		20.1		19.8		19.7		17.5		16.1		19.2		19.6		16.7		17		15.8		18.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.9		22.5		23.7		20.6		19.8		15.8		13.3		19.4		19.9		15.6		17.1		17.4		22.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.4		8.7		9.3		11.4		13.8		15.3		12.7		10.6		12.4		8.1		8.2		7		7.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		2.5		3.4		5.4		7.1		8.6		8.5		7.6		7.4		5.7		4.7		3.4		2.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		12.7		11.1		12.3		13.5		14.1		11.5		9.7		11.8		8.1		9.2		8.9		11.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.3		13.1		9.7		9.4		9.8		10		6.3		4.4		7.3		4.1		6.4		7.6		11.2