According to the information compiled by the AA correspondent from the October 2026 Spatial Precipitation Report of the General Directorate of Meteorology of the Ministry of Environment, Urbanization and Climate Change, the average rainfall in October across Turkey was 96.4 kilograms per square meter.
The normal rainfall in October was 49.4 kilograms per square meter, while the rainfall in the same period last year was 53.5 kilograms.
Accordingly, October rainfall increased by 95 percent compared to the long-term average and by 80 percent compared to the same period last year. Thus, the highest October rainfall of the last 16 years was recorded across Türkiye.
While precipitation decreased by more than 40 percent in the north of Edirne, around Bartın, Samsun, Amasya, Yozgat, Tokat and Kayseri and in the coastal areas of the Eastern Black Sea, it was below seasonal normal in Çanakkale, Muğla, Denizli, Antalya, Isparta, Mersin, Adana, Kahramanmaraş, Adıyaman, Elazığ, Tunceli, Diyarbakır and Şanlıurfa. It exceeded 4 times.
Regionally, rainfall in the Black Sea region was around seasonal normal and above normal in other regions.
The highest October rainfall was recorded in the Mediterranean, Eastern Anatolia and Southeastern Anatolia regions of the last 66 years, in the Marmara region in the last 16 years, and in the Aegean region in the last 15 years.
The most rainfall fell in Kocaeli, the least rainfall fell in Yozgat
The highest rainfall in the province was measured in Kocaeli with 214.6 kilograms per square meter, and the least rainfall was measured in Yozgat with 26.2 kilograms.
While the amount of precipitation in Mersin exceeded 5 times the seasonal normal, the largest decrease in precipitation was seen in Trabzon with 58 percent.
The highest October rainfall of the last 66 years was recorded in Mersin, Elazığ, Adıyaman, Adana, Tunceli, Bingöl, Diyarbakır, Muğla, Denizli and Kahramanmaraş.
The highest October rainfall of the last 20 years occurred in Şanlıurfa, the last 39 in Erzincan, Karaman and Malatya, the last 30 in Gaziantep, the last 29 in Hatay and Kilis, and the last 20 years in Antalya, Burdur, Isparta, Mardin and Osmaniye.
In Trabzon, October rainfall dropped to the lowest level in the last 46 years.
On the other hand, there was an average of 13.5 days of rain in October across Türkiye. The normal of this figure in the 1991-2020 period was calculated as 7.9 days.
The number of rainy days varied between 20 and 25 days around Erzincan, Tunceli, Bingöl, Muş, Bitlis and Hakkari, and between 5 and 10 days around Edirne, Kırklareli, Balıkesir, İzmir, Manisa, Uşak, Denizli, Aydın, Ankara, Niğde, Kayseri and Yozgat.
Rainfall in the Mediterranean exceeded 3 times normal
When the rainfall amounts were examined by region, the highest rainfall was recorded in the Mediterranean Region with 154.2 kilograms per square meter.
The normal rainfall in the region in October was 48.7 kilograms per square meter, while the rainfall in the same period last year was 55.7 kilograms. Thus, precipitation increased by more than 100 percent compared to both the seasonal normal and the same period last year.
October rainfall in the Marmara Region was 127 kilograms per square meter. Precipitation increased by 76 percent compared to the normal of 72 kilograms and by 27 percent compared to the same period last year.
80.1 kilograms of precipitation per square meter fell in the Aegean Region. Precipitation in the region increased by 70 percent compared to the seasonal normal of 47.2 kilograms and by 12 percent compared to the same period last year.
In the Central Anatolia Region, the amount of precipitation in October was measured as 49.1 kilograms per square meter. This amount was 56 percent above the seasonal normal and 82 percent above the same period last year.
74.1 kilograms of precipitation per square meter was recorded in the Black Sea Region. While the rainfall was around the seasonal norm of 74.5 kilograms, it decreased by 11 percent compared to the same period last year.
In the Eastern Anatolia Region, 112.7 kilograms of precipitation per square meter fell in October. There was an increase of more than 100 percent compared to the seasonal normal of 45.5 kilograms in the region and the 40.5 kilograms of precipitation in the same period last year.
In the Southeastern Anatolia Region, the amount of rainfall was recorded as 106.6 kilograms per square meter. Rainfall in the region exceeded the seasonal norm of 33.8 kilograms and the 18.5 kilogram rainfall in the same period last year.
