TARA HILLS RESEARCH STATION, NEW ZEALAND

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.5		16.3		16		13.3		9.7		6.1		2.9		1.9		4.5		7.4		9.8		12.2		14.4

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15.8		23.4		23.3		20.2		16.2		11.7		7.9		6.9		9.9		13.4		16.1		18.9		21.1

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.3		9.2		8.7		6.4		3.2		0.6		-2		-3.1		-0.9		1.3		3.4		5.5		7.7

Highest Recorded Temperature

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		34.9		34.9		34.1		32.1		24.6		22.7		17.9		15.9		21.6		24.7		24.4		29.9		30.7

Lowest Recorded Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		---		0.2		---		---		0.9		---		---		---		---		---		---		1.2		0.1

Average Number of Days Above 80F/26C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34.8		12.9		10.9		3.7		---		---		---		---		---		---		---		1.6		5.7

Average Evaporation Rate

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1051.7		168.2		130.5		102.3		59.8		42.4		28.2		27.9		39.8		67.6		99.5		132.2		153.3

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		140.4		13.3		9.3		11.9		10		12.8		12.7		10.8		10.1		10		10.6		11.6		17.3

Average Number of Rainy Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		112.8		8.3		7.3		7.3		8		10.2		12.1		10.8		10.8		9.7		10.6		8		9.7

Most Rain Reported in a Day

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		84.8		41		35.6		49.6		35.6		70		30.2		53.4		50.6		40.4		29.6		57		84.8

Avg. No. of Days w/Rain Above 0.1in/2mm

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71.3		5.7		5.1		4.7		5.4		6.2		7		5.4		5.7		6.1		6.8		5.8		7.4

Average Number of Days With Frost

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106.6		0.1		0.1		1.6		6.1		13.6		22		24.7		18.8		10.5		5.7		3.1		0.3

Average Morning Relative Humidity

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		74.8		66.2		73.7		75.7		78		81.9		85.3		85.3		81.5		71.6		69		64.1		65

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3258.1		62		71.3		155		266.6		378.2		477.4		508.4		427.8		337.9		263.5		189.1		120.9

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		669.5		195.3		169.5		102.3		---		---		---		---		---		---		---		66		136.4

Average Vapor Pressure

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mbar		8.1		11		11.1		10		8.5		6.8		5.5		5.2		6.1		7		7.8		8.4		9.8

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		15.7		14.4		12.9		11.3		10.1		9.4		9.8		10.8		12.3		13.9		15.3		15.7

Average Wind Speed

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		9.8		11.9		10.8		10.1		8.6		7.9		6.8		6.1		7.6		10.1		11.9		12.6		12.6

Highest Reported Hourly Wind Speed

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		42.5		35.3		35.3		30		28.3		33.6		40.3		27		34.3		40.4		42.5		40.7		34

Highest Reported Wind Gust

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		107.6		98.3		101.9		101.9		92.5		90.7		92.5		85.3		94.7		105.5		101.9		94.7		107.6

Avg. # of Days w/Wind Above 32 mph/52 km/h

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		138.4		15.4		12.3		12.5		9.1		8.9		6.4		4.6		8		12		16.2		15.8		17.2

Avg. # of Days w/Wind Above 39 mph/63 km/h

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38.3		4.5		3.2		3.3		2.7		2.4		1.5		1.2		2.2		3.4		4.1		5		4.8

Average Primary Wind Direction

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		279.4		299		257.1		285.3		285.7		223.3		300		263.9		261.1		282		291.7		299		304.3

Avg. # of Days w/Wind Above 59 mph/82 km/h

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1		0.1		0.1		0.1		---		---		---		---		---		0.2		0.2		0.1		0.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		21.4		19.1		14.9		10		6.4		4.7		5.1		7.6		11.8		16.2		20.1		21.7

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		8.9		7.3		5.3		3.6		2.4		1.9		2.1		3.2		4.8		6.7		8.5		9.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		19.1		19.1		17.5		14.4		11.8		9.1		9.9		11.6		14.7		16.9		18.4		18.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		20.2		20.2		18.5		15.6		12.4		10.3		10.1		11.8		14.6		16.8		18.9		19.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		21.4		19.1		14.9		10		6.4		4.7		5.1		7.6		11.8		16.2		20.1		21.7

Maximum 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		9.2		7.6		5.7		3.8		2.5		1.9		2.2		3.3		4.9		7		8.7		9.6

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		22		21.4		21.7		16.8		13.5		12		13.7		14.7		18.3		19.9		20.2		22.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		26.4		24.6		25.5		19.2		14.8		14.4		15.1		16.1		20.1		22.3		22.5		27.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		17.8		16.9		13.2		8.2		5.3		3.6		3.9		6.4		9.3		13.5		17.3		17.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.9		8.2		6.8		4.5		3.2		2.3		1.7		1.9		2.9		4.3		6.2		8.2		8.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.1		15.8		16.7		15.1		10.9		9.1		6		6.6		9.1		10.9		13.6		15.8		15.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		13.9		15.8		14.7		10.6		8.9		6.1		6		8.5		9.2		11.6		14		13.2