VIENTIANE, LAOS

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Elevation: 170 meters Latitude: 17 57N Longitude: 102 34E

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

06:45 pm

07:29 am
Local Time
2:24 pm EDT
26 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26		22		25		27		29		28		28		28		28		27		27		25		22

Average High Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		30		28		30		32		33		32		31		31		30		31		30		29		27

Average Low Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22		17		20		22		25		25		25		25		25		25		23		21		17

Highest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41		35		37		38		41		38		37		36		37		38		38		33		32

Lowest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		---		---		7		12		18		20		22		22		22		21		16		8		7

Average Number of Days Above 95F/35C

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41		---		2		12		15		6		2		1		1		---		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		251		11		17		25		27		27		25		24		23		23		24		17		7

Average Number of Days Below 75F/23C

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		213		30		27		26		12		9		5		7		8		12		19		28		31

Average Number of Days Below 65F/18C

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56		19		8		2		---		---		---		---		---		---		---		6		21

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		660		10		10		10		40		70		90		120		120		100		50		30		10

Average Number of Days With Precipitation

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		101		2		1		3		5		13		17		17		19		14		7		2		1

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		101		2		1		3		5		13		17		17		19		14		7		2		1

Average Number of Days With Thunderstorms

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42		---		1		2		4		10		7		6		6		5		1		---		---

HUMIDITY

Average Relative Humidity

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		72.1		65		65		65		65		75		80		80		85		80		75		65		65

Average Morning Relative Humidity

Years on Record: 2

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		---		---		---		81		84		91		92		---		---		---		---		---		---

Average Evening Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57		49		48		45		48		62		68		68		70		67		61		53		48

Average Dew Point

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20		15		17		18		21		23		23		23		23		23		21		18		15

DEGREE DAYS

Cooling Degree Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3191.7		146.4		188.3		284.2		333.3		327.2		308.3		310		301.4		291.7		275.6		208.3		120.6

Growing Degree Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6442.1		404.7		423.8		542.5		583.3		585.6		558.3		568.3		559.7		541.7		533.9		458.3		378.9

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.6		11.9		12.4		12.9		13.4		13.6		13.5		13.1		12.6		12.1		11.7		11.5

Average Number of Days With Fog

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		206		28		26		29		27		12		3		2		2		6		17		25		29

Average Number of Days With Smoke/Haze

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		167		25		24		26		23		9		1		1		---		3		11		18		26

Average No. of Days With Vision Obstruction

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		222		30		28		31		29		15		4		3		2		7		18		25		30

WIND

Average Wind Speed

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		6		4		8		8		8		6		6		6		6		6		6		8		4

Average No. of Days With Blowing Dust/Sand

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		222		30		28		31		29		15		4		3		2		7		18		25		30

SOLAR RADIATION

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		16.2		18.1		19.5		20		17.5		14.6		14.1		14.5		16.3		17.2		16.8		16.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.9		4.9		5.7		6.9		8		8.7		8.5		8.4		8.3		7.7		6.4		5		4.4

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.6		19		19.9		20.1		19.4		16.9		14.5		13.9		13.8		16.2		18.4		19.4		19.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		20.4		20.2		19		17.4		12.5		8.8		8.1		8.9		12.5		17.1		20.7		21.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		16.2		18.1		19.5		20		17.5		14.6		14.1		14.5		16.3		17.2		16.8		16.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.3		5.4		6.2		7.6		8.4		8.8		8.7		8.7		8.5		7.8		6.7		5.7		5.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.1		21.1		22		23.4		21.8		19.8		16.8		16.8		17.3		18.3		21.3		21.3		21.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.7		24.2		23.8		24.9		21.8		16.9		11.7		11.8		14		15.8		22.1		24.1		25.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		14.2		16.2		15.3		17		14.1		10.3		10.5		11.8		14.6		15.3		14.1		13.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		4.3		5.2		6		7.4		8.5		7.5		7.6		7.9		7.6		5.7		4.5		3.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		16.2		17.7		15.5		16.4		13.5		10.1		10.3		11.3		14.5		16.2		15.9		16.1

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		15.7		16.4		11.6		12.4		7.9		4.1		4.2		5.7		10		13.5		14.8		16.1

NEARBY - MAP

NEARBY - LIST

Viangchan, Laos (0 mi / 0 km)
Nong Khai, Thailand (12 mi / 20 km)
Muang Ph�n-H�ng, Laos (38 mi / 62 km)
Udon Thani, Thailand (42 mi / 67 km)
Vang Vieng, Laos (67 mi / 108 km)

GEOBA.SE

Vientiane, Laos