SAN JUAN, PUERTO RICO

Home > North America > United States > Puerto Rico
Elevation: 0 meters Latitude: 18 26N Longitude: 066 00W

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

Daily Averages

Hourly Data

CURRENT CONDITIONS

Sunrise/Set

05:51 am

06:48 pm
Local Time
7:34 pm AST
10 May, 2024

PRINT THIS DATA

MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26.8		24.9		25.1		25.6		26.3		27.2		28		28.1		28.2		28.1		27.7		26.6		25.6

Average High Temperature

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		30.2		28.4		28.7		29.3		29.9		30.7		31.4		31.4		31.6		31.6		31.3		29.9		28.8

Average Low Temperature

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		23.3		21.5		21.4		21.9		22.7		23.7		24.5		24.8		24.9		24.6		24.2		23.3		22.3

Highest Recorded Temperature

Years on Record: 58

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36.7		33.3		35.6		35.6		36.1		35.6		36.1		35		36.1		36.1		36.7		35.6		34.4

Lowest Recorded Temperature

Years on Record: 58

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.8		16.1		16.7		15.6		17.8		18.9		20.6		20.6		21.1		20.6		7.8		18.9		15

Average Heat Index Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		28.4		25.3		25.3		26.1		27.2		28.8		30.5		31.1		31.4		30.9		29.7		27.8		26.2

Average Wind Chill Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26.6		24.8		24.8		25.4		26.2		27.1		27.8		28		28.1		27.9		27.4		26.4		25.4

Average Number of Days Above 90F/32C

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		63.5		0.2		0.8		2		3.6		6.2		9.4		8.7		10.8		10.9		8.7		1.6		0.5

Average Number of Days Above 86F/30C

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		262		8		9		15		20		26		29		30		30		29		30		23		12

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		357.7		28.9		26.3		30.1		29.6		30.8		29.9		31		31		29.9		30.8		29.6		29.7

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13.7		4.7		4.4		2.5		0.2		---		---		---		---		---		---		0.1		1.7

Average Number of Days Below 65F/18C

Years on Record: 40

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

PRECIPITATION

Average Precipitation

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1398		87		56		55		105		148		115		122		142		146		143		156		122

Average Number of Days With Precipitation

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		198		17		13		12		13		16		15		19		19		17		17		19		19

Most Precipitation Reported in a Day

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		224.5		126.5		69.3		79.2		180.3		114.5		90.2		73.9		117.6		224.5		110.5		179.6		176.8

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		108.6		9.2		6		4.9		7.1		9.1		8		9.7		10.1		10.1		11		12.4		11

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		108		9		6		5		7		9		9		10		11		10		11		12		10

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

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31		1		1		1		2		4		3		3		3		3		3		4		3

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32.6		1.8		1.3		0.7		2.3		3.7		2.9		3.2		3.3		3.3		3.1		4.3		2.7

Avg. No. of Days w/Precip. Above 1in/25mm

Years on Record: 54

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

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		3.9		3.2		3.1		3.2		3.6		4.2		4.3		4.2		4.4		4.7		4.6		4.2		3.6

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		196		17		13		12		13		17		15		19		18		17		17		18		19

Average Number of Days With Thunderstorms

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42		---		---		---		1		5		5		5		6		8		8		3		1

Most Rain Reported in a Month

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2273		281		170		137		381		381		278		238		287		385		382		405		427

Least Rain Reported in a Month

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		902		16		5		---		2		11		7		28		47		44		30		48		17

Least Recorded Rainfall

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		900		10		---		10		---		10		---		20		40		40		30		40		10

HUMIDITY

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77.1		78		75.5		73.9		75		77.2		77		78		77.6		77.7		78.2		78.6		78.3

Average Morning Relative Humidity

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		85		83		83		82		82		85		86		85		86		86		87		86		84

Average Evening Relative Humidity

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		68		67		65		64		65		69		69		70		70		71		71		71		69

Average Dew Point

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22.1		20.4		19.9		20.1		21.1		22.5		23.2		23.6		23.8		23.6		23.2		22.3		21.2

DEGREE DAYS

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5855		391		360		431		459		524		549		570		580		555		547		466		423

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11330		856		780		896		909		989		999		1035		1045		1005		1012		916		888

BAROMETER

Average Sea Level Pressure

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mbar		1015.5		1016.9		1016.9		1016.1		1015.2		1015.1		1016.4		1016.9		1015.5		1013.9		1013.2		1013.7		1015.8

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		11.6		11.9		12.4		13		13.4		13.6		13.5		13.1		12.6		12.1		11.6		11.4

Average Daily Sunshine

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		8.6		8		8		9		9		8		9		9		9		9		9		8		8

Average Number of Clear Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		70		9		7		9		7		3		4		5		5		4		4		5		7

Average Possibility of Sunshine

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		66		68		71		76		71		63		64		68		67		62		63		61		60

Average Number of Cloudy Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		90		4		4		4		6		12		10		9		8		9		10		7		6

Average Number of Partly Cloudy Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		205		18		17		18		17		16		16		17		18		17		17		18		18

Average Percent Chance - Clear Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		15.4		15.7		15.7		18.1		16		16.4		16.8		13.1		14.3		17.2		16.8		11.8		12.7

Average Percent Chance - Scattered Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		24		23.2		22		21.2		23		20.7		23		26.3		26.3		25		25		26.1		26

Average Percent Chance - Few Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		29		30.5		30.8		30.5		28		23.2		28.8		30.1		32.2		28		28.4		28.2		28.7

Average Percent Chance - Broken Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		24		23.8		24.1		22.9		24.8		27.9		23.8		24		21.7		21.9		22.8		25.8		24.4

Average Percent Chance - Overcast Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		7.7		6.8		7.3		7.2		8.1		11.7		7.6		6.5		5.5		8		7.1		8.1		8.2

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		40.7		42.4		41.7		39.7		42.2		42.7		36.9		39.5		37.6		37.6		37.1		45.6		45.3

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		37.2		38.9		39.5		37		39.5		39.4		32.7		35		33.1		33.1		34		43.3		43

WIND

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		12.4		12.1		13		13.2		13.2		12.6		13.8		14.8		12.9		11.1		9.8		11.1		11.9

Highest Reported Hourly Wind Speed

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		127.1		49.9		48.3		51.5		49.9		48.3		56.3		78.9		72.4		127.1		59.5		53.1		49.9

Average Percent Chance - Calm Winds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		12.3		15		12.3		10.9		10		10.9		8.8		7		11.2		15.5		17.6		14.7		13.6

Average Primary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		142.8		140		138.8		136.5		136.5		141.8		138.6		135.1		139.3		155.7		166		148.9		136.3

Average Secondary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		143.8		144.9		142.6		138.4		136.9		144.2		148.5		140.9		140.1		149.4		156.7		145.4		137.2

Average Wind Vector Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		94.7		89.4		90		88.4		90.9		98.8		98		90.3		92.8		105.5		115.8		91.9		84.9

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		20.8		16.9		19.5		22.5		23.8		23.3		23.8		23.9		23.6		21.1		19.4		16.4		15.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		4.6		5.3		6		6.9		7.7		7.5		7.5		7.2		6.8		5.8		5.1		4.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.7		20		21.7		23.3		23		22.6		24		23.9		22.3		21.2		21		18.9		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		22.5		22.2		23.3		24.8		24.2		22.2		23.3		23.5		23.5		21		21.6		19.9		20.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.8		16.9		19.5		22.5		23.8		23.3		23.8		23.9		23.6		21.1		19.4		16.4		15.7

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		5.2		5.7		6.7		7.8		8.5		8.3		8		7.9		7.6		6.7		5.7		5.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24		21.8		23.5		24.9		24.8		25.3		26.2		26.3		23.8		24.1		23		22.5		21.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		26.8		25.4		26.6		27.9		28.1		27.1		27.4		28		26.8		26.5		25.2		26.3		26.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.4		15.2		18.4		20.4		20.8		20.5		21.2		22.1		21.2		18		16.1		14.3		12.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		4.1		4.7		5.4		6.2		6.9		6.8		6.6		6.5		5.8		5.2		4.1		3.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19		17.7		20.3		21.1		20.2		20		21.3		22.1		20.1		18		17.1		16.1		14.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.7		18.1		20.8		20.7		18.7		17.2		18.6		20.1		19.1		15.3		15		15.1		13.7

NEARBY - MAP

NEARBY - LIST

Carolina, Puerto Rico (0 mi / 0 km)
San Juan - Downtown, Puerto Rico (4 mi / 7 km)
Canovanas, Puerto Rico (6 mi / 11 km)
San Juan - El Capitolio, Puerto Rico (6 mi / 11 km)
Trujillo Alto, Puerto Rico (6 mi / 11 km)

GEOBA.SE

San Juan, Puerto Rico