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Subulussalam, Indonesia

Full City Profile

90,751 Population 688/sq mi density
95 ft Elevation 29 meters
79°F Avg Temperature 26°C
Subulussalam has a warm climate with an average annual temperature of 79°F (26°C). Winters average 79°F in January while summers reach 79°F in July. The area gets 111 sunny days per year. Annual precipitation totals 129.5 inches. The area receives 0.0 inches of snow annually.

Temperature

79°F Jan (26°C) 79°F Jul (26°C)
Annual Average79.3°F
47% above US avg
January Average79°F (26°C)
July Average79°F (26°C)
Sunny Days111 days/yr

Geography

Elevation95 ft (29 m)
Area131.8 sq mi (341.4 km²)
Population Density688/sq mi
Coordinates2.6620°N, 97.8827°W
TimezoneAsia/Jakarta

Precipitation & Snow

Annual Rainfall 129.5"
241% above US avg
Snowfall 0.0"
Wettest Month (Oct) 14.80"
Driest Month (Jun) 6.81"

Air Quality

Earthquake History

706 earthquakes (M2.5+) within 150 km since 1990. Strongest: M8.6. Most recent: M4.4 on Aug 24, 2025.

Mar 28, 2005 78 km WSW of Singkil, Indonesia M8.6 107 km
Apr 6, 2010 75 km E of Sinabang, Indonesia M7.8 98 km
May 19, 2005 89 km WSW of Singkil, Indonesia M6.9 120 km
Sep 5, 2011 68 km WSW of Kabanjahe, Indonesia M6.7 34 km
Nov 15, 1990 84 km SW of Langsa, Indonesia M6.7 146 km
Jul 5, 2005 94 km WSW of Singkil, Indonesia M6.7 129 km
Apr 16, 2005 54 km SSW of Singkil, Indonesia M6.4 98 km
Apr 25, 2006 87 km SE of Sinabang, Indonesia M6.3 124 km
Oct 10, 1996 62 km WSW of Binjai, Indonesia M6.3 87 km
Apr 3, 2005 33 km SSE of Singkil, Indonesia M6.3 72 km
Jul 27, 2006 96 km SW of Singkil, Indonesia M6.3 134 km
Apr 28, 2005 60 km SE of Sinabang, Indonesia M6.2 134 km
Jan 20, 1993 95 km W of Kabanjahe, Indonesia M6.2 60 km
Jun 8, 2005 51 km SE of Sinabang, Indonesia M6.1 140 km
Apr 11, 2005 54 km SE of Sinabang, Indonesia M6.1 136 km
Jun 23, 2012 66 km W of Kabanjahe, Indonesia M6.1 39 km
Jan 15, 2023 40 km SE of Singkil, Indonesia M6.1 77 km
Jan 26, 2011 58 km ESE of Sinabang, Indonesia M6.1 128 km
Apr 6, 2011 108 km SW of Singkil, Indonesia M6.0 147 km
Jul 5, 2014 86 km SE of Sinabang, Indonesia M6.0 133 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

3 tsunamis recorded within 500 km. Highest wave on record: 4.2 m (14 ft).

Year Location Cause Max Wave Deaths Distance
2005 INDONESIA Earthquake 4.2 m 1,319 107 km
2010 SUMATRA Earthquake 0.4 m 98 km
1843 SW. SUMATRA Earthquake 130 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Sinabung (80 km).

Name Type Elevation Last Eruption Distance
Sinabung Stratovolcano 2,460 m (8,071 ft) 2019 80 km
Singkut Caldera(s) 2,181 m (7,156 ft) 1881 95 km
Toba Caldera 2,157 m (7,077 ft) Unknown 106 km
Sibualbuali Stratovolcano 1,819 m (5,968 ft) Unknown 196 km
Lubukraya Stratovolcano 1,862 m (6,109 ft) Unknown 198 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 79°F (26°C) 9.7 in
February 80°F (26°C) 8.6 in
March 80°F (27°C) 11.1 in
April 80°F (27°C) 14.0 in
May 80°F (27°C) 10.1 in Warmest
June 80°F (27°C) 6.8 in Driest
July 79°F (26°C) 7.3 in
August 79°F (26°C) 10.3 in
September 79°F (26°C) 10.0 in
October 79°F (26°C) 14.8 in Wettest
November 79°F (26°C) 14.7 in Coldest
December 79°F (26°C) 12.1 in

Subulussalam has a seasonal temperature swing of 2°F / from 79°F in November to 80°F in May. Total annual precipitation is 129.5 inches, with October being the wettest month (14.8") and June the driest (6.8").

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