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Weather & Climate in Tanah Merah, Indonesia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tanah Merah has a warm climate with an average annual temperature of 76°F (25°C). Winters average 54°F in January while summers reach 76°F in July. The area gets 279 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 133.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 997 feet.
Temperature
54°F Jan (12°C)
76°F Jul (25°C)
| Annual Average | 76.3°F |
| 41% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 76°F (25°C) |
| Sunny Days | 279 days/yr |
Geography
| Elevation | 997 ft (304 m) |
| Area | 354.9 sq mi (919.1 km²) |
| Population Density | 0/sq mi |
| Coordinates | 3.6322°N, 97.7023°W |
| Timezone | Asia/Jakarta |
Precipitation & Snow
Air Quality
Earthquake History
250 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Nov 15, 1990 | 84 km SW of Langsa, Indonesia | M6.7 | 41 km | 48 km |
| Sep 5, 2011 | 68 km WSW of Kabanjahe, Indonesia | M6.7 | 77 km | 91 km |
| Oct 10, 1996 | 62 km WSW of Binjai, Indonesia | M6.3 | 34 km | 33 km |
| Jan 20, 1993 | 95 km W of Kabanjahe, Indonesia | M6.2 | 55 km | 68 km |
| Jun 23, 2012 | 66 km W of Kabanjahe, Indonesia | M6.1 | 73 km | 95 km |
| Nov 20, 1994 | 44 km WSW of Langsa, Indonesia | M6.1 | 79 km | 153 km |
| Nov 15, 1990 | 89 km SW of Langsa, Indonesia | M5.8 | 57 km | 30 km |
| May 11, 2025 | 19 km ENE of Blangpidie, Indonesia | M5.7 | 79 km | 86 km |
| Jan 31, 2025 | 58 km SSE of Blangpidie, Indonesia | M5.7 | 75 km | 53 km |
| Jan 22, 2003 | 44 km W of Langsa, Indonesia | M5.7 | 97 km | 33 km |
| Jun 11, 1997 | 83 km NW of Singkil, Indonesia | M5.6 | 93 km | 57 km |
| Nov 15, 1990 | 97 km SW of Langsa, Indonesia | M5.6 | 55 km | 54 km |
| Jan 16, 2017 | 14 km NNW of Berastagi, Indonesia | M5.6 | 92 km | 6 km |
| Jul 21, 1999 | 68 km S of Lhokseumawe, Indonesia | M5.6 | 117 km | 175 km |
| Nov 18, 1990 | 90 km SW of Langsa, Indonesia | M5.5 | 53 km | 67 km |
| Nov 15, 1990 | 91 km SW of Langsa, Indonesia | M5.4 | 51 km | 49 km |
| Sep 13, 2003 | 39 km WNW of Langsa, Indonesia | M5.3 | 110 km | 33 km |
| May 8, 2006 | 110 km NE of Sinabang, Indonesia | M5.2 | 85 km | 11 km |
| May 8, 2009 | 96 km WSW of Binjai, Indonesia | M5.2 | 31 km | 25 km |
| Jul 22, 2005 | 74 km WNW of Singkil, Indonesia | M5.2 | 147 km | 44 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Sinabung (92 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Sinabung | Stratovolcano | 2,460 m (8,071 ft) | 2019 | 92 km |
| Singkut | Caldera(s) | 2,181 m (7,156 ft) | 1881 | 98 km |
| Telong, Bur ni | Stratovolcano | 2,617 m (8,586 ft) | 1937 | 160 km |
| Toba | Caldera | 2,157 m (7,077 ft) | Unknown | 171 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 8.9 in | Coldest |
| February | 77°F (25°C) | 7.3 in | |
| March | 77°F (25°C) | 9.8 in | |
| April | 77°F (25°C) | 11.5 in | |
| May | 78°F (25°C) | 9.3 in | Warmest |
| June | 77°F (25°C) | 6.2 in | Driest |
| July | 76°F (25°C) | 6.5 in | |
| August | 76°F (25°C) | 8.6 in | |
| September | 76°F (24°C) | 10.0 in | |
| October | 76°F (24°C) | 13.3 in | Wettest |
| November | 76°F (24°C) | 13.1 in | |
| December | 76°F (24°C) | 11.7 in |
Tanah Merah has a seasonal temperature swing of 23°F / from 54°F in January to 78°F in May. Total annual precipitation is 116.2 inches, with October being the wettest month (13.3") and June the driest (6.2").