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Weather & Climate in Bolayır, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bolayır enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 42°F in January while summers reach 74°F in July. The area gets 289 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 26.0 inches (drier than the 38-inch national average). The city sits at an elevation of 348 feet.
Temperature
42°F Jan (6°C)
74°F Jul (23°C)
| Annual Average | 57.6°F |
| 7% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 289 days/yr |
Geography
| Elevation | 348 ft (106 m) |
| Area | 318.5 sq mi (825.0 km²) |
| Population Density | 3/sq mi |
| Coordinates | 40.5150°N, 26.7573°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
2,178 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.9.
| May 24, 2014 | 21 km SSW of Kamariótissa, Greece | M6.9 | 119 km | 6 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 126 km | 13 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 125 km | 8 km |
| Jul 6, 2003 | 28 km NNE of Gökçeada, Turkey | M5.7 | 63 km | 17 km |
| Jan 8, 2013 | 47 km ESE of Mýrina, Greece | M5.7 | 141 km | 13 km |
| Feb 6, 2017 | 25 km WNW of Behram, Turkey | M5.3 | 118 km | 10 km |
| Jul 6, 2003 | 30 km NE of Gökçeada, Turkey | M5.3 | 54 km | 17 km |
| Feb 12, 2017 | 24 km WNW of Behram, Turkey | M5.3 | 117 km | 6 km |
| Feb 7, 2017 | 18 km NNW of Míthymna, Greece | M5.3 | 123 km | 8 km |
| Jun 15, 2004 | 26 km N of Gökçeada, Turkey | M5.2 | 75 km | 12 km |
| Feb 6, 2017 | 23 km WNW of Behram, Turkey | M5.2 | 120 km | 7 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 90 km | 16 km |
| Feb 20, 2019 | 10 km N of Ayvac?k, Turkey | M5.1 | 96 km | 10 km |
| Jan 21, 2025 | 4 km SW of Behram, Turkey | M5.0 | 124 km | 6 km |
| Sep 24, 2019 | 20 km SE of Marmara Ere?lisi, Turkey | M4.9 | 123 km | 10 km |
| Jan 10, 2023 | 7 km W of Behram, Turkey | M4.9 | 122 km | 10 km |
| May 25, 2014 | Western Turkey | M4.9 | 53 km | 13 km |
| Jun 7, 2012 | 13 km SSW of Marmara Ere?lisi, Turkey | M4.9 | 105 km | 15 km |
| Feb 6, 2017 | 17 km WNW of Behram, Turkey | M4.9 | 121 km | 10 km |
| Jan 11, 2020 | 16 km S of Silivri, Turkey | M4.9 | 133 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
12 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 | 118 km |
| 1912 | MARMARA SEA | Eruption + Earthquake | 2.7 m | 2,800 | 39 km |
| 1893 | SAMOTHRACE | Earthquake | 1.0 m | 1 | 106 km |
| 2014 | NORTH AEGEAN SEA | Earthquake | 0.2 m | 3 | 119 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | — | 122 km |
| 1944 | EDREMIT GULF, AEGEAN SEA | Earthquake | — | 30 | 113 km |
| 1935 | MARMARA SEA | Eruption + Earthquake | — | 5 | 60 km |
| 1867 | LESBOS | Earthquake | — | 563 | 149 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 134 km |
| 1265 | MARMARA SEA | Earthquake | — | — | 58 km |
| 557 | MARMARA SEA | Earthquake | — | — | 83 km |
| 543 | BLACK SEA | Earthquake | — | — | 92 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 3.4 in | |
| February | 42°F (6°C) | 2.8 in | Coldest |
| March | 46°F (8°C) | 2.6 in | |
| April | 53°F (12°C) | 2.1 in | |
| May | 62°F (16°C) | 1.5 in | |
| June | 70°F (21°C) | 1.2 in | |
| July | 74°F (23°C) | 0.8 in | Warmest |
| August | 74°F (23°C) | 0.6 in | Driest |
| September | 68°F (20°C) | 1.3 in | |
| October | 61°F (16°C) | 2.3 in | |
| November | 53°F (11°C) | 3.4 in | |
| December | 46°F (8°C) | 4.2 in | Wettest |
Bolayır has a seasonal temperature swing of 32°F / from 42°F in February to 74°F in July. Total annual precipitation is 26.0 inches, with December being the wettest month (4.2") and August the driest (0.6").