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Weather & Climate in Subulussalam, Indonesia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
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 / relatively mild seasonal variation. The area gets 111 sunny days per year, below the national average of 205. Annual precipitation totals 129.5 inches (wetter than the 38-inch national average). The city sits at an elevation of 95 feet.
Temperature
79°F Jan (26°C)
79°F Jul (26°C)
| Annual Average | 79.3°F |
| 47% above US avg | |
| January Average | 79°F (26°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 111 days/yr |
Geography
| Elevation | 95 ft (29 m) |
| Area | 131.8 sq mi (341.4 km²) |
| Population Density | 688/sq mi |
| Coordinates | 2.6620°N, 97.8827°W |
| Timezone | Asia/Jakarta |
Precipitation & Snow
Air Quality
Earthquake History
706 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M8.6.
| Mar 28, 2005 | 78 km WSW of Singkil, Indonesia | M8.6 | 107 km | 30 km |
| Apr 6, 2010 | 75 km E of Sinabang, Indonesia | M7.8 | 98 km | 31 km |
| May 19, 2005 | 89 km WSW of Singkil, Indonesia | M6.9 | 120 km | 30 km |
| Sep 5, 2011 | 68 km WSW of Kabanjahe, Indonesia | M6.7 | 34 km | 91 km |
| Nov 15, 1990 | 84 km SW of Langsa, Indonesia | M6.7 | 146 km | 48 km |
| Jul 5, 2005 | 94 km WSW of Singkil, Indonesia | M6.7 | 129 km | 21 km |
| Apr 16, 2005 | 54 km SSW of Singkil, Indonesia | M6.4 | 98 km | 31 km |
| Apr 25, 2006 | 87 km SE of Sinabang, Indonesia | M6.3 | 124 km | 21 km |
| Oct 10, 1996 | 62 km WSW of Binjai, Indonesia | M6.3 | 87 km | 33 km |
| Apr 3, 2005 | 33 km SSE of Singkil, Indonesia | M6.3 | 72 km | 36 km |
| Jul 27, 2006 | 96 km SW of Singkil, Indonesia | M6.3 | 134 km | 20 km |
| Apr 28, 2005 | 60 km SE of Sinabang, Indonesia | M6.2 | 134 km | 22 km |
| Jan 20, 1993 | 95 km W of Kabanjahe, Indonesia | M6.2 | 60 km | 68 km |
| Jun 8, 2005 | 51 km SE of Sinabang, Indonesia | M6.1 | 140 km | 24 km |
| Apr 11, 2005 | 54 km SE of Sinabang, Indonesia | M6.1 | 136 km | 24 km |
| Jun 23, 2012 | 66 km W of Kabanjahe, Indonesia | M6.1 | 39 km | 95 km |
| Jan 15, 2023 | 40 km SE of Singkil, Indonesia | M6.1 | 77 km | 37 km |
| Jan 26, 2011 | 58 km ESE of Sinabang, Indonesia | M6.1 | 128 km | 23 km |
| Apr 6, 2011 | 108 km SW of Singkil, Indonesia | M6.0 | 147 km | 20 km |
| Jul 5, 2014 | 86 km SE of Sinabang, Indonesia | M6.0 | 133 km | 20 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
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.
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).
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").