KOLLAN ISLAND, WESTERN AUSTRALIA

Average Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		82		85		84		85		86		82		79		77		78		80		82		84		86

Average High Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		88		90		89		90		91		88		85		83		84		86		87		89		91

Average Low Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		77		80		80		80		81		77		73		71		72		75		78		80		81

Highest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		103		102		100		98		101		98		93		92		94		98		103		99		101

Lowest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		62		62		67		70		69		64		62		62		64		64		72		69		72

Average Morning Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		82		85		84		85		85		82		78		77		77		80		83		85		86

Average Afternoon Temperature

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		85		87		86		87		89		86		82		81		81		83		85		86		88

Average Number of Days Above 95F/35C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15.9		1.4		1		2.3		4.9		1.3		---		---		---		0.5		0.9		1.4		2.3

Average Number of Days Above 86F/30C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		235.6		25.5		22.4		25.6		26.1		22.6		11.5		8.1		8.8		13.8		20.3		23.6		27.3

Average Precipitation

Years on Record: 34

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		37		10		10		7		1		2		---		---		---		---		---		---		2

Average Number of Rainy Days

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		50.3		12.3		12.9		9.2		3.4		3.2		1.2		0.8		0.2		0.2		0.7		1.3		5.1

Most Rain Reported in a Day

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		11		7		7		10		4		11		2		2		---		---		1		1		6

Most Rain Reported in a Month

Years on Record: 34

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		31		31		30		24		13		12		7		2		2		---		1		1		11

Least Rain Reported in a Month

Years on Record: 34

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

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		66		75		77		74		66		58		55		54		59		64		71		72		73

Average Evening Relative Humidity

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		60		70		72		69		56		52		46		50		56		61		66		66		67

Average Morning Dew Point

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		68		76		76		75		71		64		57		55		59		64		71		74		75

Average Morning Web Bulb

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		74		79		79		78		76		71		67		65		67		71		75		77		79

Average Afternoon Wet Bulb

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		75		79		79		79		77		73		68		68		70		73		76		78		79

Cooling Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6401.9		620		550.9		620		630		542.5		420		372		403		465		542.5		585		651

Growing Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11880.6		1085		974.6		1085		1080		1007.5		870		837		868		915		1007.5		1035		1116

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		13.3		13		12.5		12.1		11.7		11.6		11.7		12		12.4		12.8		13.2		13.5

Average Number of Clear Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		163.7		2.6		2.5		5.1		13.9		15.1		18		21.9		22.6		20.9		18.5		13.8		8.9

Average Number of Cloudy Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		37.3		9.7		8.6		6.4		1.6		2.9		1.4		0.6		0.3		0.7		0.7		1		3.4

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.3		6.3		6		6.3		6.1		5.6		5.2		5.5		6.1		6.9		7.3		7.5		6.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		2.3		2.3		1.8		1.4		1		0.9		0.9		1.1		1.4		1.7		1.9		2.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.6		6.2		5.7		6.3		6.5		6.4		6.2		6.5		6.8		7.1		7.1		7.4		6.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.3		5.7		5.3		6.5		7.3		7.8		7.7		8.2		8.2		8.2		8.1		8		6.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.3		6.3		6		6.3		6.1		5.6		5.2		5.5		6.1		6.9		7.3		7.5		6.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		2.5		2.5		2.2		1.7		1.4		1.2		1.1		1.2		1.5		1.8		2.2		2.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.2		7.2		6.8		7.2		7.2		7		6.7		6.9		7.3		7.4		7.3		7.8		7.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.5		7.5		7.4		8.2		8.6		8.8		8.8		8.9		9.1		8.7		8.5		8.9		8.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		4.7		4.9		5		5.2		4.7		4.4		5.1		5.8		6.5		7		6.6		5.2

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		2.1		2		1.5		1.1		0.8		0.7		0.7		0.9		1.2		1.6		1.7		1.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.6		4.7		5		5.6		5.3		5.1		6		6.4		6.7		6.8		6.5		5.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.6		3.1		3.5		4.1		5.5		5.6		5.7		7.2		7.4		7.4		7.4		6.2		3.9