PORTO VELHO, RONDONIA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		25.6		25.5		25.5		25.6		25.7		25.3		24.7		24.6		25.9		26.2		26.1		26		25.5

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		32.3		31.3		31.5		31.7		31.6		31.6		31.7		32.7		34.3		34		33.3		32.6		31.6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20.9		21.7		21.8		21.8		21.9		21		19.2		18.3		19		20.8		21.8		22		22

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40.9		37.2		36.4		38.7		37.1		36.8		38.8		37.9		40.9		39.4		40		39.7		38

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.4		14.4		15.4		12		12.8		12		11.8		7.4		10		12.1		17.7		18.1		11

Average Number of Days Above 95F/35C

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13		---		---		---		---		---		---		1		5		3		2		---		---

Average Number of Days Above 86F/30C

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		270		19		18		22		23		23		22		25		27		24		25		23		20

Average Number of Days Below 75F/23C

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		310		26		24		25		23		27		29		30		29		25		23		22		28

Average Number of Days Below 65F/18C

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		---		---		---		---		1		2		4		2		---		---		---		---

Average Number of Days With Precipitation

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106		16		14		16		11		7		3		1		3		4		8		10		13

Average Evaporation Rate

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		798.8		46.5		43.8		47.8		45		57		69.3		97.5		117.5		88.2		76.2		59.9		50.1

Average Number of Rainy Days

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106		16		14		16		11		7		3		1		3		4		8		10		13

Average Number of Days With Thunderstorms

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38		4		3		5		2		1		1		1		2		3		6		5		5

Average Relative Humidity

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		86.1		89		88		89.1		89		86		84.1		80		82		84		86		87		88.7

Average Morning Relative Humidity

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		97		98		98		97		98		98		97		96		95		95		96		97		98

Average Evening Relative Humidity

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		66		75		73		73		72		69		64		56		51		58		63		68		73

Average Dew Point

Years on Record: 6

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

Cooling Degree Days

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3275.6		249.7		235.4		258.3		258.3		258.3		225		241.1		266.9		266.7		284.2		266.7		258.3

Growing Degree Days

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6526.2		508.1		470.8		516.7		508.3		516.7		475		499.4		525.3		516.7		542.5		516.7		516.7

Average Station Pressure

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mbar		999.7		999.3		999.2		999.4		999.6		1000.3		1001.2		1001.2		1000.2		999.9		999.2		998.6		998.8

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		12.9		12.7		12.5		12.3		12.1		12		12		12.2		12.4		12.7		12.9		13

Average Number of Days With Fog

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		282		23		20		23		23		25		27		24		26		25		20		21		25

Average Number of Days With Smoke/Haze

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		54		2		1		2		1		1		3		3		17		16		3		2		3

Average No. of Days With Vision Obstruction

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		289		23		20		23		24		25		27		25		28		26		21		22		25

Average Percent of Cloud Cover

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		70		80		80		80		70		70		50		40		20		60		70		80		80

Average Wind Speed

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		12		12		12		12		12		9		9		12		14		12		12		9		12

Average No. of Days With Blowing Dust/Sand

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		289		23		20		23		24		25		27		25		28		26		21		22		25

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.1		16.1		16.3		16		16.3		15.6		16.7		18.8		18.6		19		18.6		17.2		16

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.5		8.5		8.7		8.3		7.4		6.4		5.5		5.2		6.4		7.6		8.4		8.5		8.4

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.4		16		16.1		15.8		16.5		16.3		17.9		20		19.3		19		18.3		17.1		16

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.6		11		10.9		10.9		13.2		14.7		18.6		22.1		18.7		16.5		14.5		12.6		11.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.1		16.1		16.3		16		16.3		15.6		16.7		18.8		18.6		19		18.6		17.2		16

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.7		8.6		8.7		8.3		7.5		6.6		5.9		5.9		6.8		7.9		8.6		8.5		8.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.2		17.6		18.1		17.5		18.1		18.3		19.9		22.8		20.8		20.7		20.3		18.9		17.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.7		13.3		13.8		13.4		15.7		18.1		22.5		27.7		21.5		19.4		17.8		15.3		14

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.9		14.5		14		13.5		14.7		12.7		15.2		16.3		17		16.2		16		14.9		13.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.1		8.4		8.5		8.1		7.2		6		5		4.1		6		7.2		8.1		8.4		8.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		14.4		13.8		13.3		14.9		13.1		16.1		17.2		17.5		16.2		15.7		14.8		13.6

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		8.9		7.9		7.6		10.7		9.6		15.3		16.9		15.6		12		10.5		9.4		8