ST. DAVID'S, WALES

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.8		5.3		5		6.6		8.1		10.7		13.2		15.3		15.3		13.5		10.9		8.1		5.9

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.6		7.7		7.5		9.2		11.3		14.1		16.4		18.4		18.2		16.4		13.4		10.5		8.3

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7		2.9		2.4		3.9		4.8		7.3		10		12.1		12.3		10.6		8.3		5.6		3.5

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		27		13		13		17		20		23		26		27		26		22		20		16		14

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-6		-6		-5		-3		-1		---		4		7		6		3		---		-1		-5

Average Number of Days Below 32F/0C

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		1		3		2		---		---		---		---		---		---		---		---		2

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		940		110		70		50		40		50		40		70		70		70		100		110		100

Average Number of Days With Precipitation

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		190		20		17		17		16		12		13		13		13		14		18		19		18

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1138.4		109.9		79.5		83.7		69.8		65.8		66.2		73.6		90.5		94.6		138.4		138.8		127.6

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		151.4		16.2		12.5		12.6		10.3		9.7		9.9		9.8		11.1		11.4		16.1		16.1		15.6

Average Number of Days With Snow

Years on Record: 21

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

Average Number of Days With Frost

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		24.7		6.3		6.9		2.9		1.7		0.1		---		---		---		---		0.3		1.5		5

Average Relative Humidity

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		83		86		86		85		83		81		83		84		85		85		85		87		86

Average Dew Point

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8		5		3		4		5		8		11		12		13		11		9		7		5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3175.6		361.7		345.3		361.7		300		232.5		150		103.3		94.7		125		198.1		283.3		344.4

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		629.7		---		---		---		---		25.8		100		155		163.6		125		60.3		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.1		10.6		12.5		14.6		16.4		17.4		16.9		15.2		13.2		11.2		9.4		8.5

Average Daily Sunshine

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hr		1649.6		58.8		76.9		120.6		186.1		224.3		210.5		205.4		192.3		147.3		104.1		68.4		54.9

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		2		1		3		3		3		3		4		2		1		1		1		1

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		21.9		26.1		24.8		23.9		21.1		19.3		18.1		18.3		18		20.2		23.5		23.3		24.6

Highest Reported Wind Gust

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		115		115		74		74		74		59		69		56		67		67		80		81		81

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		2.8		5.3		9.2		14.7		19.3		19.4		18.7		16		11.4		6.4		3.3		2.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		1.9		3.1		5.4		7.5		9.1		9.9		9.5		8.1		5.9		3.7		2.2		1.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.5		4.9		7.9		11.4		15.5		17.7		16.7		16.6		15.9		13.4		9.1		5.4		3.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		4.3		6.9		9.4		14.2		18		16.4		16.1		14.8		12.1		8.1		4.7		3.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		2.8		5.3		9.2		14.7		19.3		19.4		18.7		16		11.4		6.4		3.3		2.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		2		3.5		5.8		7.6		9.2		10		9.6		8.1		6.3		4		2.4		1.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.8		5.8		9.4		14.8		18.1		19.6		19.1		19.6		20.3		16.3		10.7		6.4		5.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		5.2		8.5		13.5		18.4		21.5		21.5		22		22.1		15.9		9.8		5.9		4.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.9		2.3		4.2		8		13.1		16.7		14.8		14.2		13.3		9.5		5.7		2.8		1.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		1.7		2.7		5.1		7.4		9		9.6		9.2		8		5.5		3.4		1.9		1.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.3		3.8		6		9.3		13.5		15.2		12.9		12.6		12.8		10.7		7.8		4.3		2.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.3		3.1		4.9		7		11.1		13.4		9.1		8.8		9.8		8.8		6.7		3.6		2