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Mersak, Indonesia

Full City Profile

4,803 ft Elevation 1,464 meters
76°F Avg Temperature 24°C
Mersak has a warm climate with an average annual temperature of 76°F (24°C). Winters average 54°F in January while summers reach 76°F in July. The area gets 279 sunny days per year. Annual precipitation totals 133.4 inches. The area receives 0.0 inches of snow annually.

Temperature

54°F Jan (12°C) 76°F Jul (24°C)
Annual Average75.8°F
40% above US avg
January Average54°F (12°C)
July Average76°F (24°C)
Sunny Days279 days/yr

Geography

Elevation4,803 ft (1,464 m)
Area354.5 sq mi (918.3 km²)
Population Density0/sq mi
Coordinates3.5142°N, 97.3821°W
TimezoneAsia/Jakarta

Precipitation & Snow

Annual Rainfall 133.4"
251% above US avg
Snowfall 0.0"
Wettest Month (Oct) 13.80"
Driest Month (Jun) 6.30"

Air Quality

Earthquake History

454 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.8. Most recent: M5.0 on Jul 11, 2025.

Apr 6, 2010 75 km E of Sinabang, Indonesia M7.8 131 km
Sep 5, 2011 68 km WSW of Kabanjahe, Indonesia M6.7 83 km
Nov 15, 1990 84 km SW of Langsa, Indonesia M6.7 45 km
Oct 10, 1996 62 km WSW of Binjai, Indonesia M6.3 63 km
Nov 2, 2002 52 km N of Sinabang, Indonesia M6.3 126 km
Oct 31, 1994 63 km NNW of Sinabang, Indonesia M6.2 143 km
Jan 22, 1990 28 km S of Meulaboh, Indonesia M6.2 148 km
Jan 20, 1993 95 km W of Kabanjahe, Indonesia M6.2 50 km
Jul 2, 2013 61 km S of Bireun, Indonesia M6.1 149 km
Nov 20, 1994 44 km WSW of Langsa, Indonesia M6.1 94 km
Jun 23, 2012 66 km W of Kabanjahe, Indonesia M6.1 80 km
Aug 20, 1997 47 km ENE of Meulaboh, Indonesia M6.0 136 km
Jan 18, 2011 16 km N of Sinabang, Indonesia M5.9 146 km
Mar 29, 2005 29 km NE of Sinabang, Indonesia M5.9 131 km
Nov 15, 1990 89 km SW of Langsa, Indonesia M5.8 52 km
Jan 22, 2003 44 km W of Langsa, Indonesia M5.7 111 km
May 11, 2025 19 km ENE of Blangpidie, Indonesia M5.7 52 km
Jan 31, 2025 58 km SSE of Blangpidie, Indonesia M5.7 38 km
Mar 28, 2005 45 km N of Sinabang, Indonesia M5.6 128 km
Jul 21, 1999 68 km S of Lhokseumawe, Indonesia M5.6 119 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km. Highest wave on record: 0.4 m (1 ft).

Year Location Cause Max Wave Deaths Distance
2010 SUMATRA Earthquake 0.4 m 131 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Sinabung (119 km).

Name Type Elevation Last Eruption Distance
Sinabung Stratovolcano 2,460 m (8,071 ft) 2019 119 km
Singkut Caldera(s) 2,181 m (7,156 ft) 1881 128 km
Telong, Bur ni Stratovolcano 2,617 m (8,586 ft) 1937 153 km
Toba Caldera 2,157 m (7,077 ft) Unknown 191 km
Peuet Sague Complex 2,785 m (9,137 ft) 2000 196 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 54°F (12°C) 9.3 in Coldest
February 76°F (24°C) 7.8 in
March 76°F (25°C) 10.6 in
April 77°F (25°C) 12.4 in
May 77°F (25°C) 9.6 in Warmest
June 76°F (25°C) 6.3 in Driest
July 76°F (24°C) 6.5 in
August 76°F (24°C) 8.9 in
September 75°F (24°C) 10.1 in
October 75°F (24°C) 13.8 in Wettest
November 75°F (24°C) 13.7 in
December 75°F (24°C) 11.7 in

Mersak has a seasonal temperature swing of 23°F / from 54°F in January to 77°F in May. Total annual precipitation is 120.7 inches, with October being the wettest month (13.8") and June the driest (6.3").

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