LLANDEILO, WALES

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.1		6.1		6		7.7		9.4		12.4		14.9		16.9		16.9		15		12.1		8.8		6.6

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.5		8.9		9		10.9		13.2		16.4		18.7		20.6		20.5		18.6		15.2		11.8		9.4

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.7		3.3		3		4.5		5.5		8.4		11.1		13.2		13.2		11.3		8.9		5.8		3.7

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31		13		15		19		25		26		29		31		31		26		23		25		13

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-10		-10		-8		-7		-5		-4		1		2		2		1		-4		-8		-9

Average Number of Days Below 32F/0C

Years on Record: 2

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		---		2		---		---		---		---		---		---		---		---		---		3

Average Precipitation

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1049		99.1		78.7		63.5		94		76.2		66		61		88.9		71.1		124.5		111.8		114.3

Average Number of Days With Precipitation

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		73		8		7		6		5		5		5		5		5		6		7		8		6

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		910.1		86.7		64		61.8		55.7		57.1		61.8		68.4		69.5		71.2		110.6		102.2		101.1

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		146.5		14.5		11.2		12.5		10.6		9.9		9.4		9.8		11.1		11.4		15.6		15.9		14.8

Average Number of Days With Snow

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		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		5.9		6.1		2.6		1.2		0.1		---		---		---		---		0.5		2.4		5.9

Average Relative Humidity

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		85		87		85		84		81		79		83		83		83		83		84		87		87

Average Dew Point

Years on Record: 2

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8		4		5		5		6		8		11		12		13		11		10		8		4

Heating Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3131.8		387.5		368.8		353.1		283.3		223.9		133.3		94.7		77.5		108.3		198.1		283.3		344.4

Growing Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		697.5		---		---		---		---		34.4		116.7		163.6		180.8		141.7		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		9.2		10.6		12.5		14.5		16.3		17.3		16.7		15.1		13.1		11.2		9.5		8.6

Average Daily Sunshine

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hr		1640.6		61		79.6		128		187.5		216		205.1		199.8		189.3		149.9		106.5		66.5		51.5

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		1		1		1		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		19.1		22.6		21.7		20.9		18.1		17.6		16.5		16.3		15.9		17.2		19.8		20		21.5

Highest Reported Wind Gust

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		119		104		111		111		119		76		72		69		76		78		104		93		100

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.5		2.7		4.9		8		12.7		16.4		17		16.9		14.4		9.9		5.7		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		5.5		1.8		3		5.1		7.5		9.1		9.8		9.4		8.1		5.7		3.4		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		10		4.2		7		9.3		13		14.9		14.8		15		14		11.2		7.7		5.3		3.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.3		3.6		5.8		7		10.2		12.8		12.4		12.9		11.7		9.2		6.6		4.4		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		9.5		2.7		4.9		8		12.7		16.4		17		16.9		14.4		9.9		5.7		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		2.1		3.6		5.7		7.6		9.2		9.9		9.5		8.2		6		3.8		2.5		1.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		5.7		9.8		13.6		17.7		18		17.1		18.4		18.6		13.7		9.5		6.9		5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.4		5.1		8.8		12		17.5		18.4		16.9		19.5		19.3		12.4		8.5		6		4.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.8		2.1		3.8		6.5		11.1		13.7		13.8		14.2		11.3		7.8		4.3		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		5.2		1.6		2.6		4.7		7.2		8.8		9.2		9.1		7.6		5.2		2.9		2		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		7.8		3		5.1		7.1		11		12.4		12.1		12.6		10.8		8.3		5.4		4.1		2.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.2		3.8		4.3		7.4		8.6		7.9		8.8		6.9		5.8		4		3.3		1.8