VIANA DO CASTELO, PORTUGAL

Home > Europe > Portugal
Elevation: 17 meters Latitude: 41 42N Longitude: 008 48W

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

CURRENT CONDITIONS

Sunrise/Set

03:06 am

01:30 pm
Local Time
6:48 pm EDT
31 October, 2024

PRINT THIS DATA

MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.8		9.5		10.5		12		13.4		15.4		18.6		20.5		20.3		18.9		15.7		12.5		10.7

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19.8		14.3		15.2		17.2		18.1		20		23.8		26		26		24.4		20.7		17.3		15.1

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.8		4.7		5.8		6.9		8.6		10.8		13.3		15.1		14.6		13.4		10.8		7.7		6.3

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		38.6		23		25		28.6		31.6		34.3		38.6		38		38.2		36.4		32.8		26.2		24.6

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-4		-3.9		-2.9		-1.1		-0.6		0.8		4.7		8.7		8		3.8		2.4		-1.9		-4

Average Number of Days Above 90F/32C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		---		---		1		3		2		2		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		20.3		---		---		---		0.1		0.6		3.8		6.7		5.2		3.5		0.4		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		66.6		---		---		1.4		2.2		3.9		10.8		15.5		16.6		11.6		4.3		0.3		---

Average Number of Days Above 65F/18C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179		1		2		7		11		16		25		30		31		28		18		8		2

Average Number of Days Below 32F/0C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		4		1		---		---		---		---		---		---		---		---		---		3

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1470.2		189.9		168		105.3		117.7		105.5		56.1		28.4		30.6		95.7		163.9		180.8		228.3

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		153.6		16.3		15		13.9		15.3		14.5		9.2		6.6		6.5		9		15		15		17.3

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		176.7		67.8		88.3		66.6		57.9		52.7		64		35.7		63.9		176.7		93.4		72.1		95.5

Avg. # of Days w/Precip. Above 0.4in/10mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52.4		7.2		6.2		3.9		4.6		3.7		1.8		1.1		1		2.9		5.6		6.3		8.1

PRECIPITATION - RAIN

Average Number of Days With Thunderstorms

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11		1		1		1		1		1		1		1		---		1		1		1		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		1810		430		350		340		280		220		90		60		50		330		480		390		520

Least Recorded Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		850		20		30		---		20		10		---		---		---		---		---		---		10

Avg. No. of Days w/Rain Above 0.1in/2mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		120.1		14.2		12.8		10.4		12		11.3		6.6		4.1		3.6		6.5		11.7		12.4		14.5

HUMIDITY

Average Morning Relative Humidity

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		90		91		89		88		86		88		89		90		91		91		91		92		89

Average Evening Relative Humidity

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		64		69		69		64		62		62		62		60		59		60		66		70		71

Average Dew Point

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		10		6		7		7		8		10		13		15		15		14		11		9		7

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1611.6		273.8		221.3		194.6		149.2		91.3		---		---		---		---		80.1		175		236.8

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		152.6		---		---		---		---		---		5.8		68.9		61.2		16.7		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1807		---		14.1		63.7		100.8		167.1		255.8		327.2		319.5		266.7		178.3		75		21.6

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.1		11.1		12.4		13.9		15.1		15.7		15.4		14.3		12.9		11.5		10.3		9.7

Average Number of Days With Fog

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		281		24		20		22		20		24		24		26		26		24		24		23		24

WIND

Average Wind Speed

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		8		4		6		9		6		9		9		8		9		8		6		4		4

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		14.8		6		9.1		13.8		18.2		21.8		24.3		24.3		21.5		16.4		10.3		6.7		5.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		2.6		3.6		5		6.6		7.8		8		7.5		6.4		5.3		4.1		2.8		2.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		10.4		13		17		18.9		20		21.1		21.6		21.2		19		14.2		10.8		9.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		10.6		13.5		17.4		19.8		22.2		25.5		26.5		24.7		20.5		13.9		10.9		9.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		6		9.1		13.8		18.2		21.8		24.3		24.3		21.5		16.4		10.3		6.7		5.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2.7		3.8		5.4		7.1		8.3		8.8		8.2		7.2		5.9		4.3		3		2.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		16.7		18.3		24		23.3		22.9		23.4		24.1		23		22		18.8		16.5		14.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		25		19.1		21.2		28.8		28.1		28.7		31.3		32.8		28.4		25.7		20.6		18.8		16.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.1		4.2		6.5		9.4		13.3		19.2		21.5		21.7		19.1		13.2		8.6		5		3.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.4		2		3		3.6		5.4		6.8		7		6.3		5.8		4.6		3.5		2.4		1.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		6		8.2		10.6		13.4		17.6		18.7		19.4		18.7		14.7		11.1		7.2		4.5

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		5		6.8		8.1		10.5		17.3		19.9		21.2		19.6		13.5		9.8		6.2		3.5

NEARBY - MAP

NEARBY - LIST

Braga, Portugal (22 mi / 35 km)
Porto, Portugal (32 mi / 52 km)
Matosinhos, Portugal (33 mi / 53 km)
Vigo, Spain (36 mi / 59 km)
Vila Nova de Gaia, Portugal (40 mi / 65 km)

GEOBA.SE

Viana do Castelo, Portugal