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Weather & Climate in Adalan, Turkey
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Adalan enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 47°F in January while summers reach 78°F in July. The area gets 288 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 35.0 inches. The area receives 6.4 inches of snow annually. The city sits at an elevation of 322 feet.
Temperature
47°F Jan (9°C)
78°F Jul (26°C)
| Annual Average | 60.5°F |
| 12% above US avg | |
| January Average | 47°F (9°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 288 days/yr |
Geography
| Elevation | 322 ft (98 m) |
| Area | 0.6 sq mi (1.5 km²) |
| Population Density | 6,897/sq mi |
| Coordinates | 40.8759°N, 29.0894°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Earthquake History
3,712 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 | 67 km | 17 km |
| Apr 23, 2025 | 24 km SE of Marmara Ereğlisi, Turkey | M6.2 | 76 km | 13 km |
| Sep 13, 1999 | 4 km SE of Köseköy, Turkey | M5.9 | 83 km | 13 km |
| Nov 11, 1999 | 5 km N of Sapanca, Turkey | M5.7 | 100 km | 22 km |
| Sep 26, 2019 | 17 km ESE of Marmara Ere?lisi, Turkey | M5.7 | 79 km | 8 km |
| Aug 23, 2000 | 8 km E of Akyaz?, Turkey | M5.3 | 139 km | 15 km |
| Sep 29, 1999 | 8 km NNW of Ta?köprü, Turkey | M5.2 | 26 km | 10 km |
| Aug 31, 1999 | 2 km NNE of Kar??yaka, Turkey | M5.2 | 75 km | 10 km |
| Aug 19, 1999 | 3 km SSE of Ç?narc?k, Turkey | M5.2 | 29 km | 10 km |
| Jul 25, 2011 | 25 km SW of Marmara Ere?lisi, Turkey | M5.1 | 113 km | 16 km |
| Aug 17, 1999 | 9 km SE of Akyaz?, Turkey | M5.1 | 138 km | 10 km |
| Apr 23, 2025 | 14 km S of Kumburgaz, Turkey | M5.0 | 51 km | 10 km |
| Sep 9, 1999 | 7 km NNW of Koruköy, Turkey | M5.0 | 18 km | 13 km |
| Aug 17, 1999 | 2 km NW of Kullar, Turkey | M5.0 | 76 km | 10 km |
| Nov 7, 1999 | 8 km E of Akyaz?, Turkey | M5.0 | 139 km | 10 km |
| Apr 23, 2025 | 24 km SSW of Selimpaşa, Turkey | M4.9 | 69 km | 10 km |
| Jan 11, 2020 | 16 km S of Silivri, Turkey | M4.9 | 72 km | 10 km |
| Jun 7, 2012 | 13 km SSW of Marmara Ere?lisi, Turkey | M4.9 | 98 km | 15 km |
| Aug 17, 1999 | 9 km ESE of Köseköy, Turkey | M4.9 | 88 km | 10 km |
| Sep 24, 2019 | 20 km SE of Marmara Ere?lisi, Turkey | M4.9 | 79 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
13 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 | 84 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 45 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 75 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 21 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | - | 80 km |
| 1935 | MARMARA SEA | Eruption + Earthquake | - | 5 | 141 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | - | - | 67 km |
| 1265 | MARMARA SEA | Earthquake | - | - | 144 km |
| 986 | MARMARA SEA | Earthquake | - | - | 13 km |
| 557 | MARMARA SEA | Earthquake | - | - | 125 km |
| 551 | LEVANTIAN SEA | Earthquake | - | - | 69 km |
| 543 | BLACK SEA | Earthquake | - | - | 126 km |
| 478 | MARMARA SEA | Earthquake | - | - | 13 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (9°C) | 3.7 in | |
| February | 43°F (6°C) | 2.6 in | Coldest |
| March | 46°F (8°C) | 2.5 in | |
| April | 54°F (12°C) | 1.9 in | |
| May | 62°F (16°C) | 1.5 in | |
| June | 70°F (21°C) | 1.2 in | |
| July | 78°F (26°C) | 1.0 in | Warmest, Driest |
| August | 74°F (23°C) | 1.3 in | |
| September | 68°F (20°C) | 1.7 in | |
| October | 60°F (16°C) | 3.1 in | |
| November | 52°F (11°C) | 3.4 in | |
| December | 46°F (8°C) | 4.4 in | Wettest |
Adalan has a seasonal temperature swing of 35°F / from 43°F in February to 78°F in July. Total annual precipitation is 28.2 inches, with December being the wettest month (4.4") and July the driest (1.0").