PORT SAINT JOHN'S, SOUTH AFRICA

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Elevation: 69 feet Latitude: 31 37S Longitude: 029 33E

WEATHER

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Daily Averages

Hourly Data

CURRENT CONDITIONS

Sunrise/Set

12:30 am

11:29 am
Local Time
9:38 pm EDT
26 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67.1		72.1		72.3		71.4		68.9		66.2		63		62.2		62.8		63.9		65.3		67.6		70.3

PRECIPITATION

Average Precipitation

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		40.5		4.4		4.6		5.1		3.3		2.3		1.3		1.6		1.9		3		4.1		4.8		4.1

Average Number of Days With Precipitation

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		122.9		14.9		13		13		8.5		6.1		4		4.5		6.3		9.9		13.7		15		14

PRECIPITATION - SNOW

Average Number of Days With Frost

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.8		---		---		---		---		0.3		0.9		1		0.5		0.1		---		---		---

HUMIDITY

Average Relative Humidity

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77.9		82.9		83.7		83		78.9		72.6		67.2		68.3		72.7		78.9		81.2		82.6		82.7

Average Dew Point

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		60		66.7		67.1		66		62.1		57.1		51.9		51.7		53.9		57.2		59.4		62.2		64.8

DEGREE DAYS

Heating Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		248		---		---		---		---		---		60		86.8		68.2		33		---		---		---

Cooling Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1030.5		220.1		206.2		198.4		117		37.2		---		---		---		---		9.3		78		164.3

Growing Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6261.3		685.1		630		663.4		567		502.2		390		378.2		396.8		417		474.3		528		629.3

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		14.4		13.6		12.7		12.7		10.9		10.6		10.8		11.4		12.3		13.3		14.2		14.6

Average Possibility of Sunshine

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		60		50.5		54.5		56.6		63.4		66.7		71.2		72.8		69.2		58		53.3		52.6		51.5

WIND

Average Wind Speed

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		7.6		8.3		7.6		6.7		6.3		5.8		5.8		6.5		7.4		8.7		9.6		9.4		8.7

SOLAR RADIATION

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		6		5.7		4.9		4.1		3.4		3		3.2		3.8		4.5		4.9		5.6		5.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		2.6		2.2		1.8		1.3		0.9		0.8		0.8		1.1		1.6		2.1		2.5		2.7

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		5.4		5.5		5.2		5.1		4.8		4.6		4.8		4.9		5		4.8		5.1		5.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		5		5.3		5.1		5.2		5.5		5.4		5.6		5.4		5		4.3		4.6		4.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		6		5.7		4.9		4.1		3.4		3		3.2		3.8		4.5		4.9		5.6		5.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		2.6		2.4		1.9		1.4		1		0.9		0.9		1.3		1.7		2.2		2.5		2.7

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		6.2		6		6		5.2		5.2		5.5		5.8		5.9		5.7		6.2		5.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.4		6.2		6.6		6.5		6.7		6.1		6.4		6.7		6.9		6.5		5.8		6.7		5.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		5.2		4.7		4.3		3.6		3.1		2.6		2.9		3.3		3.5		4		4.7		5.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		2.4		2.1		1.6		1.1		0.8		0.6		0.7		0.9		1.4		2		2.3		2.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		4.7		4.5		4.5		4.3		4.3		3.8		4.1		4		3.8		3.8		4.3		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		3.8		3.7		3.5		3.9		4.1		4.7		4.2		4.5		4.1		3		2.8		3.2		3.6

NEARBY - MAP

NEARBY - LIST

Port St. Johns, South Africa (0 mi / 1 km)
Umzimvubu, South Africa (0 mi / 0 km)
Mthatha, South Africa (44 mi / 72 km)
Qunu, South Africa (55 mi / 89 km)
Izingolweni, South Africa (68 mi / 109 km)

GEOBA.SE

Port Saint John's, South Africa