AT TA'IF, SAUDI ARABIA

Average Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22		15		17		20		22		26		28		28		28		27		23		19		16

Average High Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		28		21		22		25		28		31		34		33		33		33		28		25		22

Average Low Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		17		10		11		14		16		20		23		23		23		22		17		13		11

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		45		30		32		33		35		40		41		42		45		38		37		32		32

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		---		---		---		1		7		11		16		17		16		16		5		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		128		---		---		---		3		17		28		25		26		25		3		---		---

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		228		2		3		13		23		30		30		31		31		29		28		8		1

Average Number of Days Below 45F/7C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		7		4		1		---		---		---		---		---		---		---		---		3

Average Precipitation

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		510		---		---		10		30		80		---		---		70		---		---		20		---

Average Number of Days With Thunderstorms

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33		1		1		2		6		8		1		1		3		3		4		2		1

Most Rain Reported in a Month

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2050		50		40		30		160		860		30		---		990		50		30		100		30

Least Recorded Rainfall

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		80		---		---		---		---		---		---		---		---		---		---		---		---

Average Morning Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57		77		72		66		62		54		35		34		37		43		58		72		78

Average Evening Relative Humidity

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		30		44		37		33		31		27		18		21		21		20		26		37		42

Average Dew Point

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7		7		6		7		8		10		6		7		8		8		8		8		7

Heating Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		218.3		86.1		39.2		---		---		---		---		---		---		---		---		---		51.7

Cooling Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1860.5		---		---		51.7		125		241.1		316.7		327.2		327.2		283.3		155		33.3		---

Growing Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4892.6		172.2		196.2		310		375		499.4		566.7		585.6		585.6		533.3		413.3		283.3		206.7

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.4		11.8		12.4		13		13.6		13.8		13.7		13.2		12.6		12		11.5		11.3

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		21		6		2		2		1		---		---		---		---		---		1		3		6

Average Wind Speed

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		17		17		19		19		17		16		17		20		17		14		12		14		16

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.8		15.7		18.7		20.8		22.7		24.3		26		25.3		24		22.2		20.1		15.7		14.5

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		4.4		4.9		6.2		7.2		7.5		7.1		7.2		7		6.2		5		4.7		4.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.9		19.3		21.5		21.9		22		22.4		26		25		22.6		22.7		22.4		18.9		17.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.3		21.3		23.4		22.4		22.5		24.1		27.2		25.9		24.4		24		24.6		20.2		19.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.8		15.7		18.7		20.8		22.7		24.3		26		25.3		24		22.2		20.1		15.7		14.5

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.7		4.9		5.6		6.7		7.7		8.5		7.9		8.2		7.6		6.8		6.2		5.5		4.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.4		22.9		24.3		23.3		24.4		24.7		29		27.5		25.4		23.6		25.3		23		19.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		28.4		27.8		28.5		25.1		27.5		29.6		33.3		30.9		30.8		25.7		29.9		27.5		24.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		14.1		17		19.4		20.9		21		23.8		22.2		22.1		20.5		16.2		12.5		12.7

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		3.4		4		5.8		6.3		6.4		5.8		6.2		5.7		5.9		4		3.6		3.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.2		17		19.2		20.3		20.2		19.5		23.7		21.9		20.9		20.8		17.7		14.3		14.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		17.4		19.2		19.7		19.1		18		22.9		20		20.9		20.6		16.3		12.8		15.4