Tomok Bolon, Indonesia

Full City Profile

10,000 Population 63/sq mi density

3,025 ft Elevation 922 meters

68°F Avg Temperature 20°C

Tomok Bolon enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 68°F in January while summers reach 68°F in July. The area gets 190 sunny days per year. Annual precipitation totals 80.2 inches. The area receives 0.0 inches of snow annually.

Temperature

68°F Jan (20°C) 68°F Jul (20°C)

Annual Average	68.3°F
	26% above US avg
January Average	68°F (20°C)
July Average	68°F (20°C)
Sunny Days	190 days/yr

Geography

Elevation	3,025 ft (922 m)
Area	159.5 sq mi (413.0 km²)
Population Density	63/sq mi
Coordinates	2.6521°N, 98.8608°W
Timezone	Asia/Jakarta

Precipitation & Snow

Annual Rainfall 80.2"

111% above US avg

Snowfall 0.0"

Wettest Month (Oct) 9.76"

Driest Month (Jul) 2.80"

Air Quality

Earthquake History

416 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.7. Most recent: M5.0 on Aug 7, 2025.

Sep 5, 2011	68 km WSW of Kabanjahe, Indonesia	M6.7	113 km
Apr 3, 2005	33 km SSE of Singkil, Indonesia	M6.3	124 km
Oct 10, 1996	62 km WSW of Binjai, Indonesia	M6.3	135 km
Jan 20, 1993	95 km W of Kabanjahe, Indonesia	M6.2	147 km
Jan 15, 2023	40 km SE of Singkil, Indonesia	M6.1	121 km
Jun 23, 2012	66 km W of Kabanjahe, Indonesia	M6.1	114 km
May 19, 2008	31 km NNW of Padangsidempuan, Indonesia	M6.0	117 km
Mar 7, 2007	39 km SSE of Singkil, Indonesia	M5.9	131 km
May 1, 2014	41 km SSE of Singkil, Indonesia	M5.9	126 km
Jun 14, 2011	38 km ENE of Sibolga, Indonesia	M5.6	94 km
Jan 16, 2017	14 km NNW of Berastagi, Indonesia	M5.6	86 km
Jun 14, 2011	50 km N of Padangsidempuan, Indonesia	M5.5	100 km
Mar 29, 2005	44 km N of Padangsidempuan, Indonesia	M5.5	105 km
Mar 17, 2025	41 km ENE of Sibolga, Indonesia	M5.4	92 km
Jul 11, 2017	10 km NNE of Parapat, Indonesia	M5.4	17 km
May 3, 2014	46 km SSE of Singkil, Indonesia	M5.4	139 km
Mar 15, 2014	13 km S of Pematangsiantar, Indonesia	M5.4	31 km
Jul 15, 1995	14 km E of Parapat, Indonesia	M5.4	23 km
Apr 19, 2015	26 km NE of Sibolga, Indonesia	M5.3	85 km
Mar 11, 2023	39 km SSE of Singkil, Indonesia	M5.3	128 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1892	NORTHEAST SUMATRA	Earthquake	—	—	73 km

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

Nearby Volcanoes

5 volcanoes within 200 km. Closest: Toba (9 km).

Name	Type	Elevation	Last Eruption	Distance
Toba	Caldera	2,157 m (7,077 ft)	Unknown	9 km
Singkut	Caldera(s)	2,181 m (7,156 ft)	1881	77 km
Sinabung	Stratovolcano	2,460 m (8,071 ft)	2019	78 km
Sibualbuali	Stratovolcano	1,819 m (5,968 ft)	Unknown	130 km
Lubukraya	Stratovolcano	1,862 m (6,109 ft)	Unknown	136 km

Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	68°F (20°C)	7.1 in	Coldest
February	68°F (20°C)	5.4 in
March	69°F (21°C)	7.8 in
April	69°F (21°C)	8.3 in
May	69°F (21°C)	6.0 in	Warmest
June	69°F (20°C)	3.3 in
July	68°F (20°C)	2.8 in	Driest
August	68°F (20°C)	4.1 in
September	68°F (20°C)	7.2 in
October	68°F (20°C)	9.8 in	Wettest
November	68°F (20°C)	9.6 in
December	68°F (20°C)	8.7 in

Tomok Bolon has a seasonal temperature swing of 2°F / from 68°F in January to 69°F in May. Total annual precipitation is 80.2 inches, with October being the wettest month (9.8") and July the driest (2.8").

View full weather details →