ST.-LAURENT DU MARONI, FRENCH GUIANA

Average Temperature

Years on Record: 17

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

Average High Temperature

Years on Record: 17

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

Average Low Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		23		23		23		24		24		24		23		23		24		24		24		23		23

Highest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		42		41		35		38		33		33		33		37		40		42		40		37		36

Lowest Recorded Temperature

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18		19		18		20		20		20		21		21		21		21		20		21		20

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		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		166		6		6		10		11		11		12		17		21		22		22		18		10

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		217		20		18		18		15		16		19		21		17		16		17		18		21

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2590		260		180		190		240		340		330		240		170		110		100		160		240

Average Number of Days With Thunderstorms

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38		---		---		---		1		2		4		6		7		8		5		4		1

Most Rain Reported in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		3770		560		460		530		580		630		500		400		250		250		250		260		460

Least Recorded Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1540		70		---		20		40		110		160		90		40		30		10		70		120

Average Morning Relative Humidity

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		98		97		97		96		97		98		98		98		98		98		98		98		98

Average Evening Relative Humidity

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		73		73		73		71		74		79		81		74		69		65		68		72		77

Average Dew Point

Years on Record: 7

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

Cooling Degree Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3187.3		232.5		211.9		249.7		241.7		249.7		233.3		249.7		275.6		275		284.2		250		241.1

Growing Degree Days

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6437.8		490.8		447.3		508.1		491.7		508.1		483.3		508.1		533.9		525		542.5		500		499.4

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		12.2		12.3		12.4		12.6		12.7		12.8		12.8		12.6		12.5		12.3		12.2		12.2

Average Number of Days With Fog

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		---		---		---		---		1		1		1		2		1		3		2		1

Average Wind Speed

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		8		9		9		9		9		6		6		6		6		6		6		6		8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.6		19.7		21.8		22.7		22.2		19.4		18.8		22		23.4		25		23.8		21.2		19.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.5		6.1		6.4		7		7.4		7.6		7.3		6.6		6.6		6.2		5.8		5.8		5.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.8		20.3		22.1		22.6		22		19.3		18.8		22.1		23.3		24.7		24.1		21.9		20.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.3		21.5		22.9		22.4		21.1		17.2		17		22.7		23.9		26.8		26.4		23.9		21.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.6		19.7		21.8		22.7		22.2		19.4		18.8		22		23.4		25		23.8		21.2		19.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.4		7		7.3		8.1		8.2		8		7.7		7.4		7.5		7.2		6.6		6.7		6.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.3		23.1		24.9		24.6		24.7		23.1		21.5		24.4		25.5		26		26		24.3		22.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27.1		27		28.4		26.3		26.3		24.1		21.9		27.3		28.4		29.5		30.3		29		27.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.6		16.2		18.6		18.5		18.4		16.6		15.9		19.2		20.7		22.2		21.9		18.4		16.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		5.2		5.4		6.3		6.4		6.5		6.7		5.7		5.7		5.5		5		4.8		4.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.6		16.6		18.8		18.4		18.2		16.6		15.9		19.2		20.6		22		22.1		18.8		16.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.6		14.7		16.7		14.9		14.4		12.6		12.1		17.3		18.9		21.3		22.5		18.1		15.8