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Ondong Siau, Indonesia

Full City Profile

20 ft Elevation 6 meters
77°F Avg Temperature 25°C
Ondong Siau has a warm climate with an average annual temperature of 77°F (25°C). Winters average 82°F in January while summers reach 77°F in July. The area gets 336 sunny days per year. Annual precipitation totals 87.2 inches. The area receives 0.0 inches of snow annually.

Temperature

82°F Jan (28°C) 77°F Jul (25°C)
Annual Average76.5°F
42% above US avg
January Average82°F (28°C)
July Average77°F (25°C)
Sunny Days336 days/yr

Geography

Elevation20 ft (6 m)
Area0.6 sq mi (1.5 km²)
Population Density0/sq mi
Coordinates2.7473°N, 125.3611°W
TimezoneAsia/Makassar

Precipitation & Snow

Annual Rainfall 87.2"
129% above US avg
Snowfall 0.0"
Wettest Month (Jan) 11.30"
Driest Month (Aug) 4.80"

Air Quality

Earthquake History

1,015 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.4. Most recent: M4.5 on Aug 18, 2025.

Feb 28, 1996 123 km ENE of Laikit, Laikit II (Dimembe), Indonesia M6.4 134 km
Jun 13, 2011 193 km WNW of Tobelo, Indonesia M6.3 124 km
Jul 10, 2021 215 km NW of Tobelo, Indonesia M6.1 128 km
Feb 20, 1994 172 km NW of Ternate, Indonesia M6.0 146 km
Mar 12, 1996 208 km NW of Tobelo, Indonesia M5.9 132 km
Apr 2, 1996 227 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.9 109 km
Apr 7, 2005 218 km NW of Tobelo, Indonesia M5.9 127 km
Jul 9, 2005 199 km NW of Tobelo, Indonesia M5.9 130 km
Mar 4, 2005 206 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.9 117 km
Mar 4, 1996 146 km N of Laikit, Laikit II (Dimembe), Indonesia M5.9 22 km
Jun 23, 2001 79 km E of Laikit, Laikit II (Dimembe), Indonesia M5.7 150 km
Sep 9, 2009 153 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.7 82 km
Feb 7, 2002 224 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.7 108 km
Jun 26, 2005 99 km ENE of Laikit, Laikit II (Dimembe), Indonesia M5.7 120 km
Dec 24, 1992 182 km WNW of Tobelo, Indonesia M5.7 137 km
Jan 16, 2007 187 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.6 99 km
Jan 18, 2001 188 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.6 113 km
Jun 12, 1992 147 km NNE of Laikit, Laikit II (Dimembe), Indonesia M5.6 39 km
Apr 4, 1996 225 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.6 103 km
Mar 29, 2016 160 km NE of Laikit, Laikit II (Dimembe), Indonesia M5.5 92 km
Source: USGS (M2.5+, 1990–2025)

Tsunami History

4 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 52 km
1892 AWU VOLCANO, SANGIHE ISLAND Astronomical 0.8 m 1,532 104 km
1856 SANGIHE ISLAND Astronomical — 2,806 104 km
1845 CELEBES SEA Earthquake — 118 150 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

6 volcanoes within 200 km. Closest: Tangkoko-Duasudara (138 km).

Name Type Elevation Last Eruption Distance
Tangkoko-Duasudara Stratovolcano 1,334 m (4,377 ft) 1880 138 km
Klabat Stratovolcano 1,968 m (6,457 ft) Unknown 148 km
Mahawu Stratovolcano 1,299 m (4,262 ft) 1977 165 km
Lokon-Empung Stratovolcano(es) 1,580 m (5,184 ft) 2015 167 km
Tondano Caldera Caldera 1,202 m (3,944 ft) Unknown 179 km
Soputan Stratovolcano 1,785 m (5,856 ft) 2020 195 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 82°F (28°C) 11.3 in Warmest, Wettest
February 76°F (24°C) 9.6 in Coldest
March 76°F (25°C) 9.0 in
April 77°F (25°C) 9.1 in
May 77°F (25°C) 9.5 in
June 77°F (25°C) 8.2 in
July 77°F (25°C) 6.1 in
August 77°F (25°C) 4.8 in Driest
September 77°F (25°C) 5.9 in
October 77°F (25°C) 7.6 in
November 77°F (25°C) 10.0 in
December 76°F (25°C) 10.6 in

Ondong Siau has a seasonal temperature swing of 6°F / from 76°F in February to 82°F in January. Total annual precipitation is 101.7 inches, with January being the wettest month (11.3") and August the driest (4.8").

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