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Weather & Climate in Büyükorhan, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Büyükorhan experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 39°F in January while summers reach 69°F in July. The area gets 298 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 54.1 inches (wetter than the 38-inch national average). The area receives 83.6 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 2,638 feet.
Temperature
39°F Jan (4°C)
69°F Jul (20°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 39°F (4°C) |
| July Average | 69°F (20°C) |
| Sunny Days | 298 days/yr |
Geography
| Elevation | 2,638 ft (804 m) |
| Area | 384.8 sq mi (996.5 km²) |
| Population Density | 26/sq mi |
| Coordinates | 39.7710°N, 28.8861°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
7,316 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 | 137 km | 17 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 132 km | 13 km |
| Aug 10, 2025 | 10 km WSW of Bigadiç, Turkey | M6.1 | 87 km | 10 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 143 km | 13 km |
| May 19, 2011 | 12 km ENE of Simav, Turkey | M5.8 | 72 km | 7 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 141 km | 8 km |
| Jan 22, 2020 | 15 km ESE of K?rka?aç, Turkey | M5.6 | 119 km | 6 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 97 km | 10 km |
| Jul 25, 1999 | 14 km SW of Bigadiç, Turkey | M5.2 | 92 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 138 km | 10 km |
| Jun 26, 2020 | 13 km NW of Gölmarmara, Turkey | M5.2 | 144 km | 10 km |
| Feb 17, 2009 | 5 km ENE of Simav, Turkey | M5.2 | 75 km | 7 km |
| May 3, 2012 | 13 km NE of Simav, Turkey | M5.2 | 69 km | 3 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 115 km | 10 km |
| May 27, 2017 | 10 km NW of Gölmarmara, Turkey | M5.1 | 144 km | 10 km |
| Aug 31, 2021 | 19 km W of ?hsaniye, Turkey | M5.1 | 138 km | 10 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 150 km | 16 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 108 km | 13 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 142 km | 10 km |
| Jan 28, 2020 | Western Turkey | M5.0 | 114 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
10 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1509 | MARMARA SEA | Earthquake | 6.0 m | 5,000 | 132 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 94 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 143 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 106 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | — | 135 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 125 km |
| 986 | MARMARA SEA | Earthquake | — | — | 118 km |
| 551 | LEVANTIAN SEA | Earthquake | — | — | 143 km |
| 543 | BLACK SEA | Earthquake | — | — | 110 km |
| 478 | MARMARA SEA | Earthquake | — | — | 118 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
1 volcano within 200 km. Closest: Kula (136 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Kula | Pyroclastic cone(s) | 750 m (2,461 ft) | Unknown | 136 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 3.7 in | |
| February | 38°F (3°C) | 2.9 in | Coldest |
| March | 42°F (6°C) | 2.6 in | |
| April | 50°F (10°C) | 2.5 in | |
| May | 58°F (14°C) | 2.1 in | |
| June | 64°F (18°C) | 1.3 in | |
| July | 69°F (20°C) | 0.6 in | Warmest |
| August | 68°F (20°C) | 0.5 in | Driest |
| September | 63°F (17°C) | 0.9 in | |
| October | 54°F (12°C) | 1.7 in | |
| November | 46°F (8°C) | 3.0 in | |
| December | 39°F (4°C) | 4.2 in | Wettest |
Büyükorhan has a seasonal temperature swing of 31°F / from 38°F in February to 69°F in July. Total annual precipitation is 26.0 inches, with December being the wettest month (4.2") and August the driest (0.5").