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Weather & Climate in Tomohon, Indonesia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tomohon has a warm climate with an average annual temperature of 74°F (23°C). Winters average 73°F in January while summers reach 74°F in July / relatively mild seasonal variation. The area gets 169 sunny days per year, below the national average of 205. Annual precipitation totals 91.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 2,408 feet.
Temperature
73°F Jan (23°C)
74°F Jul (24°C)
| Annual Average | 74.2°F |
| 37% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 169 days/yr |
Geography
| Elevation | 2,408 ft (734 m) |
| Area | 56.8 sq mi (147.1 km²) |
| Population Density | 486/sq mi |
| Coordinates | 1.3168°N, 124.8038°W |
| Timezone | Asia/Makassar |
Precipitation & Snow
Air Quality
Earthquake History
1,048 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.6.
| Oct 28, 1998 | 128 km ESE of Tondano, Indonesia | M6.6 | 140 km | 33 km |
| Feb 28, 1996 | 123 km ENE of Laikit, Laikit II (Dimembe), Indonesia | M6.4 | 147 km | 116 km |
| Jun 30, 2004 | 58 km S of Tomohon, Indonesia | M6.3 | 58 km | 91 km |
| Dec 13, 1990 | 88 km WSW of Tomohon, Indonesia | M6.2 | 88 km | 33 km |
| Feb 25, 2025 | 45 km E of Modisi, Indonesia | M6.1 | 102 km | 22 km |
| May 15, 1990 | 105 km W of Tomohon, Indonesia | M6.0 | 105 km | 30 km |
| Oct 29, 1995 | 119 km ESE of Tondano, Indonesia | M6.0 | 131 km | 69 km |
| Jun 10, 1992 | 83 km WSW of Tomohon, Indonesia | M6.0 | 84 km | 31 km |
| Oct 13, 2001 | 129 km ESE of Tondano, Indonesia | M6.0 | 141 km | 33 km |
| Jun 6, 1992 | 89 km WSW of Tomohon, Indonesia | M6.0 | 89 km | 18 km |
| Jan 19, 1993 | 125 km ESE of Laikit, Laikit II (Dimembe), Indonesia | M5.9 | 141 km | 27 km |
| Jan 20, 1995 | 118 km ESE of Laikit, Laikit II (Dimembe), Indonesia | M5.9 | 134 km | 57 km |
| Apr 7, 1997 | 114 km SSE of Tondano, Indonesia | M5.8 | 121 km | 60 km |
| Oct 29, 1995 | 129 km ESE of Tondano, Indonesia | M5.8 | 141 km | 52 km |
| Jul 24, 2003 | 132 km S of Tomohon, Indonesia | M5.8 | 134 km | 73 km |
| Nov 30, 1990 | 98 km WSW of Tomohon, Indonesia | M5.8 | 98 km | 28 km |
| Jun 11, 1992 | 81 km WSW of Tomohon, Indonesia | M5.8 | 81 km | 28 km |
| Jul 1, 2009 | 120 km ESE of Laikit, Laikit II (Dimembe), Indonesia | M5.8 | 132 km | 37 km |
| May 16, 2010 | 90 km S of Tomohon, Indonesia | M5.8 | 91 km | 123 km |
| May 4, 2019 | 143 km WNW of Manado, Indonesia | M5.7 | 147 km | 327 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
5 tsunamis recorded within 500 km. Highest wave on record: 25.0 m (82 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1871 | RUANG | Astronomical | 25.0 m | 400 | 127 km |
| 1885 | SULAWESI ISLAND | Unknown | — | — | 61 km |
| 1859 | N. MOLUCCAS ISLANDS | Unknown | — | — | 34 km |
| 1857 | KEMA, SULAWESI I, N. MOLUCCAS IS | Earthquake | — | — | 44 km |
| 1845 | CELEBES SEA | Earthquake | — | 118 | 21 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Lokon-Empung (5 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lokon-Empung | Stratovolcano(es) | 1,580 m (5,184 ft) | 2015 | 5 km |
| Mahawu | Stratovolcano | 1,299 m (4,262 ft) | 1977 | 8 km |
| Tondano Caldera | Caldera | 1,202 m (3,944 ft) | Unknown | 10 km |
| Soputan | Stratovolcano | 1,785 m (5,856 ft) | 2020 | 24 km |
| Klabat | Stratovolcano | 1,968 m (6,457 ft) | Unknown | 30 km |
| Tangkoko-Duasudara | Stratovolcano | 1,334 m (4,377 ft) | 1880 | 48 km |
| Ambang | Complex | 1,795 m (5,889 ft) | 2005 | 76 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 10.2 in | Coldest, Wettest |
| February | 73°F (23°C) | 8.5 in | |
| March | 74°F (23°C) | 8.4 in | |
| April | 74°F (23°C) | 9.1 in | |
| May | 75°F (24°C) | 9.6 in | Warmest |
| June | 75°F (24°C) | 7.1 in | |
| July | 74°F (24°C) | 4.9 in | |
| August | 75°F (24°C) | 3.7 in | Driest |
| September | 74°F (24°C) | 4.7 in | |
| October | 75°F (24°C) | 6.8 in | |
| November | 75°F (24°C) | 9.5 in | |
| December | 74°F (23°C) | 9.5 in |
Tomohon has a seasonal temperature swing of 2°F / from 73°F in January to 75°F in May. Total annual precipitation is 91.9 inches, with January being the wettest month (10.2") and August the driest (3.7").