MAUNA LOA OBSERVATORY, HAWAII

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Elevation: 11179 feet Latitude: 19 32N Longitude: 155 35W

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

CURRENT CONDITIONS

Sunrise/Set

11:51 am

12:46 am
Local Time
4:40 pm EDT
4 May, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		46.2		43.7		42.7		43.4		45.2		47.5		49.7		49.3		48.9		48.4		47.7		44.4		43.2

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		54		51.8		50		51.4		53.3		55.7		57.3		57.7		57.1		55.8		55.4		52		50.5

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		38.4		35.5		35.4		35.4		37.1		39.3		42		40.9		40.8		41.1		40		36.7		35.9

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		39.9		1.4		1.2		1.6		1.8		3.8		6		10.9		6.8		2.7		3		0.2		0.5

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		292.7		20.4		13.6		19.1		22.8		29.6		29.6		30.4		30.8		28.6		29.2		19.8		18.8

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		362.5		30.2		28		31		30		31		30		31		31		30		31		30		29.3

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		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 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 Below 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 Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		232.9		26.2		25.6		28.4		23.8		19.5		7.4		11.6		12		11.2		13.8		26.4		27

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		18.4		4.4		2.8		3.6		1.2		---		---		0.2		---		---		---		1.7		4.5

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		23.3		2.1		2.6		2.8		2.6		0.7		0.6		1.8		2.4		1.9		0.9		1.6		3.3

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6865		662		624		670		594		543		460		487		498		497		536		619		676

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		140		3		3		2		5		15		31		38		20		15		7		---		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		11.5		11.9		12.4		13		13.5		13.7		13.6		13.1		12.6		12		11.6		11.4

SOLAR RADIATION

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		4.3		5.1		5.8		6.4		6.7		7		6.9		6.7		6.3		5.4		4.4		4.1

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		1.3		1.5		1.8		2		2.1		2		2		1.9		1.7		1.5		1.4		1.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		5.2		5.7		6.1		6.2		6.2		7		6.9		6.3		6.4		6		5.2		4.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.3		5.7		6		6.2		6.4		6.6		7.2		7		6.9		6.8		6.3		5.4		5.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		4.3		5.1		5.8		6.4		6.7		7		6.9		6.7		6.3		5.4		4.4		4.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		1.5		1.7		2		2.3		2.3		2.3		2.2		2.1		1.9		1.7		1.5		1.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.6		5.9		6.5		6.7		6.7		6.6		7.7		7.4		7		7.1		6.5		5.9		5.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.5		6.8		7.4		7.4		7.4		7.6		8.4		8.1		8.3		8.2		7.2		6.7		7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.6		4.1		4.8		5.3		5.9		6.1		6.3		6.1		5.6		4.8		3.6		3.5

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		1.1		1.3		1.5		1.8		1.9		1.8		1.8		1.6		1.4		1.4		1.2		1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		4.2		4.5		4.9		5.1		5.4		6.1		6.2		5.8		5.7		5.3		4.1		4.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.7		3.9		4		4.2		4.4		5		5.5		5.8		5.7		5.5		5.1		3.7		4.2

NEARBY - MAP

NEARBY - LIST

Holualoa, Hawaii (1 mi / 1 km)
Kulani Mauka, Hawaii (8 mi / 14 km)
Kau, Hawaii (13 mi / 21 km)
Honalo, Hawaii (15 mi / 24 km)
Kanahaha, Hawaii (15 mi / 24 km)

GEOBA.SE

Mauna Loa Observatory, Hawaii