HERON ISLAND, QUEENSLAND

Average Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		73		80		79		78		75		71		67		65		67		70		73		77		78

Average High Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		78		85		84		83		80		75		71		70		72		75		79		82		84

Average Low Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		69		75		75		74		71		67		63		61		62		65		68		72		73

Highest Recorded Temperature

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		91		91		91		89		88		84		80		78		82		87		87		89		91

Lowest Recorded Temperature

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		41		64		62		60		59		55		44		41		42		55		57		62		51

Average Morning Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		74		81		80		79		76		71		67		65		67		71		75		78		80

Average Afternoon Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		76		82		82		80		77		73		69		68		70		73		76		79		81

Average Number of Days Above 86F/30C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42.8		14.3		10.2		6.2		0.5		---		---		---		---		0.1		0.4		2.9		8.2

Average Precipitation

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		42		4		5		4		4		4		4		3		1		---		1		2		3

Average Number of Rainy Days

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		126		11.3		14.2		14.4		13.8		14.1		10.2		9.7		8.1		5.8		7.1		7.7		9.7

Most Rain Reported in a Day

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		11		7		11		6		6		3		9		6		2		1		3		5		6

Most Rain Reported in a Month

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		29		14		22		12		29		12		28		19		4		3		7		6		12

Least Rain Reported in a Month

Years on Record: 33

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

Average Morning Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		72		73		74		75		72		74		74		73		71		67		67		70		71

Average Evening Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		68		70		71		72		69		69		69		67		64		62		65		68		69

Average Morning Dew Point

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64		71		71		70		66		62		59		57		57		59		63		68		69

Average Afternoon Dew Point

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64		71		71		71		66		62		58		56		57		59		63		68		69

Average Morning Web Bulb

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		68		75		74		73		70		66		62		60		61		64		68		71		73

Average Afternoon Wet Bulb

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		69		75		75		74		70		66		63		61		62		64		68		72		73

Cooling Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3123.6		465		409.6		418.5		315		186		60		15.5		62		150		263.5		360		418.5

Growing Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8602.4		930		833.4		883.5		765		651		510		480.5		527		600		728.5		810		883.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		13.8		13.3		12.6		11.9		11.4		11.1		11.3		11.7		12.3		13		13.7		14

Average Daily Sunshine

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		8.4		8.1		7.8		7.5		8.1		7.5		7.5		8		8.4		9.1		9.7		9.6		9.2

Average Number of Clear Days

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		107.9		6.3		3.9		3.8		5.7		7.8		10.5		12.7		14.1		13.1		11.7		8.8		9.4

Average Number of Cloudy Days

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		65.4		8.7		8.1		7.4		5.3		6.8		5.7		4.4		4.3		3.2		2.9		3.6		5

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		7.5		6.7		6.2		5.1		4.2		3.9		4.2		5.2		6.5		7.2		7.7		7.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		2.1		2.1		1.7		1.4		1.2		1		1		1.1		1.2		1.6		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		6.3		6.7		6.4		6.3		5.8		5.2		4.9		5.3		6.3		7		7		7		7.5

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.1		7.7		6.7		6.8		6.2		5.7		5.8		6.4		7.3		8.2		8.1		8.3		7.9

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		7.5		6.7		6.2		5.1		4.2		3.9		4.2		5.2		6.5		7.2		7.7		7.6

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		2.3		2.1		1.7		1.3		1.1		1.2		1.5		1.6		2		2.3		2.6

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		7.4		7.2		6.9		6.6		6.2		5.4		5.9		7.2		7.6		7.5		7.4		8.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.4		9.2		8.5		7.9		7.6		7.4		6.7		7.5		8.9		9.3		9.2		9.3		9.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		6.3		5.8		5		4.1		3.7		3.5		3.8		4.2		5.8		6.3		6.6		6.3

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		1.8		1.7		1.5		1.2		0.9		0.9		0.8		0.7		1		1.4		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		5.3		5.7		5.5		5.1		4.5		4.4		4.3		4.6		4.8		6.1		6.2		6.1		6.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		5.4		5		4.5		4		4.3		4.8		5.1		4.8		6.5		6.4		6.2		5.4