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Weather & Climate in Geyve, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Geyve experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 38°F in January while summers reach 70°F in July. The area gets 290 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 25.6 inches (drier than the 38-inch national average). The city sits at an elevation of 276 feet.
Temperature
38°F Jan (3°C)
70°F Jul (21°C)
| Annual Average | 53.7°F |
| 1% below US avg | |
| January Average | 38°F (3°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 276 ft (84 m) |
| Area | 255.6 sq mi (662.0 km²) |
| Population Density | 79/sq mi |
| Coordinates | 40.5075°N, 30.2925°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
3,244 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 | 45 km | 17 km |
| Nov 12, 1999 | 8 km S of Düzce, Turkey | M7.2 | 78 km | 10 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 31 km | 13 km |
| Nov 11, 1999 | 5 km N of Sapanca, Turkey | M5.7 | 26 km | 22 km |
| Nov 12, 1999 | 7 km SSW of Düzce, Turkey | M5.5 | 76 km | 10 km |
| Aug 23, 2000 | 8 km E of Akyaz?, Turkey | M5.3 | 41 km | 15 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 84 km | 10 km |
| Nov 12, 1999 | 11 km W of Bolu, Turkey | M5.2 | 103 km | 10 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 98 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 37 km | 10 km |
| Nov 24, 2013 | 14 km WNW of Yeniça?a, Turkey | M5.1 | 138 km | 6 km |
| Nov 16, 1999 | 2 km S of Bolu, Turkey | M5.1 | 114 km | 10 km |
| Aug 17, 1999 | 9 km SE of Akyaz?, Turkey | M5.1 | 36 km | 10 km |
| Nov 7, 1999 | 8 km E of Akyaz?, Turkey | M5.0 | 42 km | 10 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 38 km | 10 km |
| Aug 26, 2001 | 24 km N of Bolu, Turkey | M5.0 | 119 km | 8 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 100 km | 13 km |
| Aug 17, 1999 | 9 km ESE of Köseköy, Turkey | M4.9 | 28 km | 10 km |
| Aug 17, 1999 | 11 km ESE of Akyaz?, Turkey | M4.9 | 42 km | 10 km |
| Feb 14, 2000 | 28 km SW of Devrek, Turkey | M4.9 | 136 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
6 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 | 135 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 39 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 98 km |
| 986 | MARMARA SEA | Earthquake | - | - | 98 km |
| 551 | LEVANTIAN SEA | Earthquake | - | - | 46 km |
| 478 | MARMARA SEA | Earthquake | - | - | 98 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 2.9 in | Coldest |
| February | 39°F (4°C) | 2.3 in | |
| March | 43°F (6°C) | 2.3 in | |
| April | 52°F (11°C) | 2.1 in | |
| May | 59°F (15°C) | 2.1 in | |
| June | 66°F (19°C) | 1.9 in | |
| July | 70°F (21°C) | 1.2 in | Warmest, Driest |
| August | 69°F (21°C) | 1.2 in | |
| September | 64°F (18°C) | 1.4 in | |
| October | 56°F (13°C) | 2.2 in | |
| November | 48°F (9°C) | 2.5 in | |
| December | 41°F (5°C) | 3.5 in | Wettest |
Geyve has a seasonal temperature swing of 32°F / from 38°F in January to 70°F in July. Total annual precipitation is 25.6 inches, with December being the wettest month (3.5") and July the driest (1.2").