PORT ST. JOHNS, SOUTH AFRICA

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Elevation: 46 meters Latitude: 31 38S Longitude: 029 33E

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

CURRENT CONDITIONS

Sunrise/Set

12:32 am

11:26 am
Local Time
8:14 pm EDT
29 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19		22		22		22		20		19		17		17		17		18		19		19		21

Average High Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		23		25		25		25		23		23		22		21		21		21		22		22		24

Average Low Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16		19		20		19		17		16		13		13		13		15		16		17		18

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41		31		32		33		34		34		32		33		36		39		41		37		32

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5		12		11		11		11		8		5		6		6		6		7		7		11

PRECIPITATION

Average Precipitation

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1170		120		130		150		80		60		30		30		50		90		130		120		130

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		82		9		10		9		6		5		3		2		3		6		8		8		9

HUMIDITY

Average Relative Humidity

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77		83		82		83		78		70		67		64		76		78		80		82		82

Average Dew Point

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15		18		19		18		16		13		11		9		12		13		15		16		17

DEGREE DAYS

Heating Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		59.9		---		---		---		---		---		8.3		25.8		25.8		---		---		---		---

Cooling Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		731.2		120.6		125.6		120.6		75		43.1		---		---		---		---		25.8		50		94.7

Growing Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3921.6		378.9		361		378.9		325		301.4		241.7		232.5		232.5		250		284.2		300		353.1

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		11.7		10.9		10.6		10.8		11.4		12.3		13.3		14.2		14.6

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		16.5		21.5		20.5		17.7		14.8		12.3		10.8		11.6		13.8		16.2		17.6		20		21.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.1		9.2		8		6.4		4.7		3.3		2.7		2.9		4		5.8		7.6		8.9		9.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.1		19.4		19.7		18.7		18.2		17.2		16.6		17.2		17.5		18.1		17.2		18.4		18.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.3		18.1		18.9		18.3		18.8		19.8		19.6		20.1		19.4		17.8		15.4		16.4		17.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.5		21.5		20.5		17.7		14.8		12.3		10.8		11.6		13.8		16.2		17.6		20		21.2

Maximum 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		9.5		8.5		6.9		5.1		3.6		3.2		3.4		4.5		6.2		7.9		9.1		9.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.8		21.5		22.2		21.6		21.5		18.6		18.8		19.6		20.9		21.3		20.4		22.1		20.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.1		22.4		23.8		23.3		24.2		22		23.1		24.2		24.7		23.3		20.9		24		20.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		18.5		16.7		15.5		12.9		11.3		9.4		10.3		11.9		12.6		14.3		16.9		18.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		8.8		7.4		5.8		3.9		3		2.3		2.4		3.3		5		7.1		8.1		9.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.2		16.9		16.1		16.2		15.5		15.4		13.8		14.7		14.5		13.6		13.8		15.6		16.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.5		13.4		12.6		14		14.6		16.9		15.1		16.1		14.7		10.9		10		11.5		12.8

NEARBY - MAP

NEARBY - LIST

Port Saint John's, South Africa (0 mi / 1 km)
Umzimvubu, South Africa (0 mi / 0 km)
Mthatha, South Africa (45 mi / 72 km)
Qunu, South Africa (55 mi / 89 km)
Izingolweni, South Africa (68 mi / 110 km)

GEOBA.SE

Port St. Johns, South Africa