WITTENOOM GORGE, WESTERN AUSTRALIA

Average Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26		32		31		30		27		21		18		17		19		23		27		30		32

Average High Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		32.8		39.7		38		37		33.2		27.4		24.4		24.1		26.4		30.9		34.9		37.8		39.5

Average Low Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19.7		26.1		25.3		24.4		21.2		16.1		12.9		11.4		13.2		16.8		20.5		23.6		25.4

Highest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		47.5		46.7		47.5		43.9		41.3		37.4		32.2		31.1		34.4		38		42.8		44.7		46.2

Lowest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		1.4		17.2		15		12.8		11		5.6		1.4		1.6		3.4		6.7		6.7		12.2		16.8

Average Morning Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		25.9		32.2		30.7		30.3		26.7		21.3		17.9		17.1		19.3		23.7		27.8		31		32.4

Average Afternoon Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31.7		38.1		36.5		35.9		32.2		26.6		23.6		23.4		25.7		30		33.9		36.7		38.2

Average Number of Days Above 104F/40C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56.8		17.1		9.9		5.4		0.2		---		---		---		---		---		1		7.2		16

Average Number of Days Above 95F/35C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		159.5		28.1		22.5		23.6		9.1		0.4		---		---		---		2.8		17.7		26		29.3

Average Number of Days Above 86F/30C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		233.3		30.4		26.9		29.6		25.2		8.3		0.7		0.2		4.1		18.9		28.8		29.4		30.7

Average Precipitation

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		410		90		90		50		20		30		30		10		---		---		---		---		40

Average Number of Rainy Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.6		8.3		8.4		5.4		3.4		3.8		3.2		1.9		1.5		0.8		0.8		1.8		4.5

Most Rain Reported in a Day

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		310		150		110		100		90		70		70		70		30		10		20		20		310

Most Rain Reported in a Month

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		500		270		420		310		220		170		180		100		70		20		20		30		500

Average Morning Relative Humidity

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		35		36		42		35		37		41		47		43		36		27		23		24		28

Average Evening Relative Humidity

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		24		23		28		24		26		30		32		29		24		17		16		16		19

Average Morning Dew Point

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.6		13.8		15.1		12		9.6		6.3		5.5		3.2		2.9		2.5		3.5		5.6		9.7

Average Afternoon Dew Point

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.9		11.1		13		10.3		8		5.6		4.7		2.1		1.8		0.3		1.5		3.5		7.6

Average Morning Web Bulb

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.4		21.4		21.4		19.8		17.4		14		12.1		10.9		11.8		13.7		15.9		18.1		19.9

Average Afternoon Wet Bulb

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18.3		22.4		22.6		21.2		19.1		16.1		14.3		13.7		14.5		16		18		19.7		21.4

Heating Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25.8		---		---		---		---		---		---		25.8		---		---		---		---		---

Cooling Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3141.3		439.2		368.8		370.3		258.3		94.7		---		---		34.4		158.3		275.6		366.7		430.6

Growing Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6099.9		620		565		620		508.3		353.1		250		232.5		292.8		408.3		533.9		600		620

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		13.7		13.2		12.6		11.9		11.4		11.2		11.3		11.8		12.4		13		13.6		13.9

Average Number of Clear Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179.3		5.9		6.1		10.2		11.3		15.2		16.2		21.5		22.6		22.5		21.2		15.9		10.8

Average Number of Cloudy Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57.2		7.7		8		6.2		6.3		6.8		6.3		3.4		2.8		1.6		1.5		2.5		4.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.5		26.9		24.2		22.8		19.6		16.2		14.8		16.7		20.3		24.3		27.2		28.6		28.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		7.7		7.5		6.1		4.8		3.9		3.5		3.1		3.3		4.1		5.4		6.5		7.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.5		24.3		22.9		23.3		22.1		20		18.4		20.6		24.3		26.1		26.4		26		28.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27.2		27.6		24.1		25.1		24.4		22.7		22.4		26.1		29.3		31.3		31.8		31.7		30.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.5		26.9		24.2		22.8		19.6		16.2		14.8		16.7		20.3		24.3		27.2		28.6		28.3

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		8.9		8.5		7.2		5.5		4.8		4.3		4.4		4.4		5.8		6.3		7.4		8.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		26		25.9		26.4		25.7		25.5		23.9		21.5		22.5		26.1		27.5		27.6		28.1		31

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		32.1		31.4		31.6		29.7		30.6		29.7		28.3		29.7		32.6		34.1		34.7		37		35.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.7		22.9		20.4		19.1		17.9		13.7		12.5		13.6		18.3		20.8		25.1		26.6		25.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.3		6.9		6		5.2		3.6		2.7		2.5		2.5		2.6		3.5		4.7		5.3		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		20.4		20.9		19.4		19.3		19.9		16.3		14.9		16.2		21.5		22		24.4		24.3		25.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21		20.1		17.2		17.8		20.4		16.3		16.1		17.8		24		23.3		27.4		27.6		24.4