CHIANG MAI, THAILAND

Average Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		79		71		75		81		85		84		83		82		82		81		80		76		71

Average High Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		89		84		89		94		97		93		90		89		88		88		88		85		82

Average Low Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		69		58		60		66		73		75		76		75		75		74		72		67		59

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		105		93		97		102		105		104		104		99		99		100		100		99		91

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		41		41		46		50		63		64		61		70		68		63		61		46		43

Average Number of Days Above 95F/35C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		62		---		2		19		22		13		3		2		1		---		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		282		14		24		30		29		28		28		27		25		25		25		19		8

Average Number of Days Below 75F/23C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		308		31		28		31		24		19		18		20		21		24		30		30		31

Average Number of Days Below 65F/18C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		102		29		24		12		1		---		---		---		---		---		1		9		26

Average Precipitation

Years on Record: 80

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		47.5		0.3		0.2		0.6		1.8		6		5.3		6.6		8.9		9.9		5.2		1.7		0.6

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		130		1		1		3		7		17		18		21		23		20		12		5		2

Average Number of Days With Thunderstorms

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		61		---		---		2		7		12		7		7		8		11		6		1		---

Most Rain Reported in a Month

Years on Record: 80

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		78.6		3.7		3.5		3.6		6.1		17.4		13.7		17.6		20.7		23.3		13.6		6.9		3.9

Least Recorded Rainfall

Years on Record: 80

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		19.7		---		---		---		---		0.3		1.3		2		2.6		1.4		0.3		---		---

Average Relative Humidity

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		72.9		70		55		55		60		75		80		80		85		85		80		75		75

Average Morning Relative Humidity

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		86		90		84		78		78		83		86		88		90		91		90		90		90

Average Evening Relative Humidity

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		51		41		34		33		38		52		60		63		65		64		60		53		45

Average Dew Point

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67		58		58		60		66		70		72		72		73		73		71		66		59

Cooling Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5132.4		186		268.4		465		600		589		540		527		511.5		480		465		330		170.5

Growing Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10611.1		651		692.1		930		1050		1054		990		992		976.5		930		930		780		635.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.5		11.9		12.4		13		13.4		13.6		13.5		13.1		12.6		12.1		11.6		11.4

Average Number of Days With Fog

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		202		30		28		29		24		7		1		1		2		6		18		26		30

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		5		4		4		5		5		5		6		5		5		4		6		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		4.8		4.9		5.7		6		6.1		5.4		4.6		4.2		4.1		4.3		4.3		4.2		4.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		1.1		1.3		1.7		2.1		2.4		2.4		2.4		2.3		2.1		1.8		1.5		1.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		6		6.4		6.3		5.9		5		4.5		4.1		3.9		4.2		4.6		4.9		5.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		7		7.3		6.6		5.8		4.3		3.1		2.5		2.6		3.1		3.9		4.9		6.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		4.9		5.7		6		6.1		5.4		4.6		4.2		4.1		4.3		4.3		4.2		4.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2		1.3		1.6		2		2.3		2.5		2.4		2.4		2.4		2.2		1.9		1.6		1.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		6.5		7		7		6.6		5.8		5.5		4.7		4.6		4.8		5		5.9		6.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.9		7.9		8.3		7.9		7.2		5.7		4.4		3.3		3.6		3.9		4.6		6.6		7.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		4.5		5		5		5		4.2		3.9		3.5		3.2		3.8		3.5		3.6		3.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		1		1.1		1.5		1.8		2.3		2.4		2.3		2.2		2.1		1.8		1.2		1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		5.3		5.6		5.1		4.8		4		3.8		3.4		3.1		3.8		3.6		4.1		4.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		5.8		5.7		4.5		3.9		2.6		2.2		1.7		1.5		2.4		2.6		3.6		4.7