Biak, Indonesia

Full City Profile

41,731 Population 11/sq mi density

33 ft Elevation 10 meters

79°F Avg Temperature 26°C

Biak has a warm climate with an average annual temperature of 79°F (26°C). Winters average 78°F in January while summers reach 78°F in July. The area gets 131 sunny days per year. Annual precipitation totals 113.0 inches. The area receives 0.0 inches of snow annually.

Temperature

78°F Jan (25°C) 78°F Jul (26°C)

Annual Average	78.7°F
	46% above US avg
January Average	78°F (25°C)
July Average	78°F (26°C)
Sunny Days	131 days/yr

Geography

Elevation	33 ft (10 m)
Area	3,923.2 sq mi (10,161.1 km²)
Population Density	11/sq mi
Coordinates	-1.1767°N, 136.0820°W
Timezone	Asia/Jayapura

Precipitation & Snow

Annual Rainfall 113.0"

197% above US avg

Snowfall 0.0"

Wettest Month (Jul) 10.63"

Driest Month (Nov) 7.83"

Air Quality

Earthquake History

711 earthquakes (M2.5+) within 150 km since 1990. Strongest: M8.1. Most recent: M4.6 on Aug 11, 2025.

Feb 17, 1996	1996 Biak, Indonesia Earthquake	M8.1	102 km
Jun 16, 2010	121 km SSE of Biak, Indonesia	M7.0	122 km
Jun 16, 2010	135 km SSE of Biak, Indonesia	M6.6	136 km
Feb 17, 1996	32 km NNE of Biak, Indonesia	M6.5	33 km
Feb 17, 1996	67 km NNW of Insrom, Indonesia	M6.5	73 km
Feb 18, 1996	46 km ESE of Biak, Indonesia	M6.4	46 km
Nov 20, 1994	92 km S of Biak, Indonesia	M6.3	93 km
Jun 26, 2011	146 km SSE of Biak, Indonesia	M6.3	148 km
Feb 24, 1996	144 km ENE of Biak, Indonesia	M6.2	145 km
Jun 16, 2010	147 km SSE of Biak, Indonesia	M6.2	148 km
Feb 17, 1996	Biak region, Indonesia	M6.0	68 km
Jan 22, 2007	132 km NE of Nabire, Indonesia	M5.9	150 km
Feb 18, 1996	70 km NNW of Insrom, Indonesia	M5.9	76 km
May 26, 2015	96 km NNW of Insrom, Indonesia	M5.8	102 km
Feb 17, 1996	76 km E of Biak, Indonesia	M5.8	76 km
Mar 22, 1997	112 km ENE of Biak, Indonesia	M5.7	113 km
Mar 3, 1996	72 km NE of Biak, Indonesia	M5.7	73 km
Feb 17, 1996	28 km NNE of Insrom, Indonesia	M5.7	31 km
May 15, 1996	58 km NNW of Insrom, Indonesia	M5.7	64 km
Jul 16, 2012	108 km E of Biak, Indonesia	M5.6	109 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

5 tsunamis recorded within 500 km. Highest wave on record: 7.7 m (25 ft).

Year	Location	Cause	Max Wave	Deaths	Distance
1996	IRIAN JAYA	Eruption + Earthquake	7.7 m	164	102 km
1864	NW. IRIAN JAYA	Earthquake	3.0 m	250	122 km
1979	IRIAN JAYA	Earthquake	2.0 m	115	56 km
1957	NW. IRIAN JAYA	Earthquake	1.8 m	—	108 km
1914	NW. IRIAN JAYA	Earthquake	0.1 m	—	120 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	78°F (25°C)	10.1 in	Coldest
February	78°F (25°C)	10.0 in
March	79°F (26°C)	10.5 in
April	79°F (26°C)	9.1 in
May	79°F (26°C)	9.8 in	Warmest
June	79°F (26°C)	8.6 in
July	78°F (26°C)	10.6 in	Wettest
August	79°F (26°C)	9.7 in
September	79°F (26°C)	8.5 in
October	79°F (26°C)	8.5 in
November	79°F (26°C)	7.8 in	Driest
December	78°F (26°C)	9.7 in

Biak has a seasonal temperature swing of 2°F / from 78°F in January to 79°F in May. Total annual precipitation is 113.0 inches, with July being the wettest month (10.6") and November the driest (7.8").

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