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Weather & Climate in Harmancık, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Harmancık experiences four distinct seasons with an average annual temperature of 51°F (10°C). Winters average 40°F in January while summers reach 67°F in July. The area gets 302 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 38.0 inches. The area receives 19.1 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 2,182 feet.
Temperature
40°F Jan (4°C)
67°F Jul (19°C)
| Annual Average | 50.8°F |
| 6% below US avg | |
| January Average | 40°F (4°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 2,182 ft (665 m) |
| Area | 384.8 sq mi (996.5 km²) |
| Population Density | 17/sq mi |
| Coordinates | 39.6761°N, 29.1553°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
6,387 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.6.
| Aug 17, 1999 | 4 km ESE of Derince, Turkey | M7.6 | 134 km | 17 km |
| Aug 10, 2025 | 10 km WSW of Bigadiç, Turkey | M6.1 | 103 km | 10 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 138 km | 13 km |
| May 19, 2011 | 12 km ENE of Simav, Turkey | M5.8 | 59 km | 7 km |
| Jan 22, 2020 | 15 km ESE of K?rka?aç, Turkey | M5.6 | 132 km | 6 km |
| Feb 17, 2009 | 5 km ENE of Simav, Turkey | M5.2 | 64 km | 7 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 119 km | 10 km |
| Jul 25, 1999 | 14 km SW of Bigadiç, Turkey | M5.2 | 107 km | 10 km |
| May 3, 2012 | 13 km NE of Simav, Turkey | M5.2 | 56 km | 3 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 133 km | 10 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 105 km | 10 km |
| Aug 31, 2021 | 19 km W of ?hsaniye, Turkey | M5.1 | 114 km | 10 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 137 km | 10 km |
| Jan 28, 2020 | Western Turkey | M5.0 | 127 km | 10 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 146 km | 10 km |
| Apr 21, 2017 | 17 km E of Selendi, Turkey | M5.0 | 101 km | 10 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 116 km | 13 km |
| Feb 4, 2020 | 13 km NNE of Akhisar, Turkey | M4.9 | 131 km | 5 km |
| Aug 17, 1999 | 9 km ESE of Köseköy, Turkey | M4.9 | 141 km | 10 km |
| Feb 18, 2020 | 12 km E of K?rka?aç, Turkey | M4.8 | 131 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
8 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 110 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 139 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 114 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 145 km |
| 986 | MARMARA SEA | Earthquake | — | — | 125 km |
| 551 | LEVANTIAN SEA | Earthquake | — | — | 140 km |
| 543 | BLACK SEA | Earthquake | — | — | 135 km |
| 478 | MARMARA SEA | Earthquake | — | — | 125 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Kula (134 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Kula | Pyroclastic cone(s) | 750 m (2,461 ft) | Unknown | 134 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 3.9 in | |
| February | 36°F (2°C) | 3.1 in | Coldest |
| March | 41°F (5°C) | 2.7 in | |
| April | 49°F (9°C) | 2.7 in | |
| May | 57°F (14°C) | 2.3 in | |
| June | 63°F (17°C) | 1.5 in | |
| July | 67°F (19°C) | 0.7 in | Warmest |
| August | 67°F (19°C) | 0.6 in | Driest |
| September | 61°F (16°C) | 0.9 in | |
| October | 53°F (12°C) | 1.7 in | |
| November | 45°F (7°C) | 3.1 in | |
| December | 38°F (3°C) | 4.4 in | Wettest |
Harmancık has a seasonal temperature swing of 31°F / from 36°F in February to 67°F in July. Total annual precipitation is 27.6 inches, with December being the wettest month (4.4") and August the driest (0.6").