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Weather & Climate in Demta, Indonesia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Demta has a warm climate with an average annual temperature of 78°F (26°C). Winters average 78°F in January while summers reach 77°F in July / relatively mild seasonal variation. The area gets 272 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 257.6 inches (wetter than the 38-inch national average). The city sits at an elevation of 10 feet.
Temperature
78°F Jan (25°C)
77°F Jul (25°C)
| Annual Average | 77.9°F |
| 44% above US avg | |
| January Average | 78°F (25°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 272 days/yr |
Geography
| Elevation | 10 ft (3 m) |
| Area | 5,862.6 sq mi (15,184.1 km²) |
| Population Density | 0/sq mi |
| Coordinates | -2.3589°N, 140.1473°W |
| Timezone | Asia/Jayapura |
Precipitation & Snow
Air Quality
Earthquake History
1,368 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Jul 29, 1998 | 192 km W of Abepura, Indonesia | M6.7 | 143 km | 33 km |
| Dec 19, 1995 | 130 km SSW of Abepura, Indonesia | M6.5 | 150 km | 63 km |
| Oct 31, 1992 | 40 km N of Vanimo, Papua New Guinea | M6.5 | 124 km | 6 km |
| Jan 25, 1991 | 162 km WNW of Abepura, Indonesia | M6.4 | 105 km | 33 km |
| Aug 12, 2025 | 195 km WNW of Abepura, Indonesia | M6.3 | 136 km | 14 km |
| Oct 17, 2002 | 119 km SSW of Abepura, Indonesia | M6.3 | 138 km | 33 km |
| Dec 26, 1996 | 192 km WNW of Abepura, Indonesia | M6.3 | 135 km | 33 km |
| Jan 25, 1991 | 185 km WNW of Abepura, Indonesia | M6.3 | 127 km | 22 km |
| Dec 18, 1999 | 108 km W of Abepura, Indonesia | M6.2 | 53 km | 16 km |
| Apr 18, 1995 | 59 km NNW of Jayapura, Indonesia | M6.1 | 48 km | 20 km |
| Oct 31, 1992 | 42 km N of Vanimo, Papua New Guinea | M6.1 | 123 km | 29 km |
| Jan 18, 2020 | 146 km W of Abepura, Indonesia | M6.0 | 105 km | 44 km |
| Oct 15, 2009 | 131 km WSW of Abepura, Indonesia | M6.0 | 103 km | 106 km |
| Jan 17, 2007 | 119 km SW of Abepura, Indonesia | M6.0 | 113 km | 101 km |
| Oct 19, 2002 | 123 km SSW of Abepura, Indonesia | M6.0 | 147 km | 33 km |
| Sep 17, 2016 | 52 km NNW of Jayapura, Indonesia | M6.0 | 56 km | 9 km |
| Mar 28, 2009 | 127 km WSW of Abepura, Indonesia | M6.0 | 94 km | 93 km |
| Sep 24, 2016 | 65 km NNW of Jayapura, Indonesia | M5.9 | 67 km | 8 km |
| Jun 29, 1996 | near the north coast of Papua, Indonesia | M5.9 | 122 km | 33 km |
| Sep 18, 2016 | 61 km NNW of Jayapura, Indonesia | M5.8 | 52 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 78°F (25°C) | 10.9 in | Wettest |
| February | 78°F (26°C) | 9.0 in | |
| March | 78°F (26°C) | 10.6 in | |
| April | 78°F (26°C) | 8.8 in | |
| May | 78°F (26°C) | 6.7 in | |
| June | 77°F (25°C) | 5.8 in | |
| July | 77°F (25°C) | 5.7 in | Coldest |
| August | 77°F (25°C) | 5.6 in | Driest |
| September | 78°F (25°C) | 5.6 in | |
| October | 78°F (26°C) | 7.0 in | |
| November | 78°F (26°C) | 7.3 in | Warmest |
| December | 78°F (26°C) | 9.0 in |
Demta has a seasonal temperature swing of 2°F / from 77°F in July to 78°F in November. Total annual precipitation is 92.0 inches, with January being the wettest month (10.9") and August the driest (5.6").