Türkiye's 11-Month Precipitation in the 2026 Water Year Reached the Highest Level in the Last 66 Years

According to the information compiled by the AA correspondent from the "2026 Water Year 11-Month Spatial Cumulative Precipitation Report" of the General Directorate of Meteorology of the Ministry of Environment, Urbanization and Climate Change, an average of 709.2 kilograms of precipitation per square meter fell across Turkey in the period of October 1, 2025-August 31, 2026.

In the same period, the water year normal was recorded as 548.5 kilograms per square meter, and last year's water year rainfall was recorded as 401.1 kilograms.

Accordingly, rainfall was 29 percent above normal and 77 percent above the same period last year. Thus, the 2026 water year precipitation reached the highest level in the last 66 years in an 11-month period.

While the normal rainfall decreased by up to 20 percent in Tekirdağ, Kırklareli, Bursa, Yalova, Eskişehir, Kastamonu, Çankırı, Malatya, Bayburt, Trabzon, Rize, Artvin and Erzurum, it increased by over 80 percent in Siirt, Şırnak and Van.

While there was an average of 111.8 days of rainfall across Türkiye, the normal number of rainy days covering the period 1991-2020 was recorded as 95.8 days. Thus, the number of rainy days was 17 percent above normal.

79 provinces received rainfall above or around normal

The highest rainfall in the province was recorded in Rize with 1455.2 kilograms per square meter, and the least rainfall was recorded in Iğdır with 384.9 kilograms.

While water year precipitation was around or above normal in 79 provinces, only Bursa and Tekirdağ received below normal precipitation.

The highest rainfall level of the last 66 years was measured in Adana, Düzce, Hatay, Isparta, İzmir, Kahramanmaraş, Kayseri, Niğde, Ordu, Osmaniye, Tokat, Yozgat, Manisa and Giresun.

The highest rainfall level was reached in Bingöl, Bitlis, Erzincan, Sivas and Tunceli in the last 38 years, in Van in the last 32 years and in Gaziantep in the last 30 years.

The highest increase is in Southeastern Anatolia

Rainfall throughout the region was above normal and last year's rainfall in all regions.

The highest increase was recorded in the Southeastern Anatolia Region with 46 percent compared to normal.

The highest 11-month water year precipitation levels were seen in the Mediterranean Region in the last 66 years, in the Eastern Anatolia Region in the last 38 months, in the Central Anatolia Region in the last 15 months, in the Aegean Region in the last 11 months, and in the Black Sea Region in the last 10 years.

In the Marmara Region, water year precipitation was recorded as 676.6 kilograms per square meter, normal was 628.3 kilograms, and 2025 water year precipitation was recorded as 425.1 kilograms. There was an 8 percent increase in precipitation compared to normal and a 59 percent increase compared to the same period last year.

743.6 kilograms of precipitation per square meter fell in the Aegean Region. The normal rainfall for the region was 584.4 kilograms, and the rainfall in the same period last year was 422.6 kilograms. Precipitation was 27 percent above normal and 76 percent above last year.

While 939.3 kilograms of precipitation per square meter fell in the Mediterranean Region, the normal for the region was 647.1 kilograms, while the precipitation in the same period last year was recorded as 449.2 kilograms. Precipitation increased by 45 percent compared to normal and more than 100 percent compared to last year.

In the Central Anatolia Region, water year precipitation was 489.4 kilograms per square meter, normal was 385.6 kilograms, and last year's precipitation in the same period was 247.3 kilograms. There was a 27 percent increase in precipitation compared to normal and a 98 percent increase compared to last year.

While 752.8 kilograms of precipitation per square meter fell in the Black Sea Region, the normal was 642.2 kilograms, while the precipitation in the same period last year was 601.4 kilograms. Precipitation was 17 percent above normal and 25 percent above last year.

In the Eastern Anatolia Region, water year precipitation was recorded as 698.7 kilograms per square meter, normal was 520.7 kilograms, and last year's precipitation in the same period was 392.8 kilograms. There was a 34 percent increase in precipitation compared to normal and a 78 percent increase compared to last year.

In the Southeastern Anatolia Region, 771.4 kilograms of precipitation per square meter fell. The normal rainfall for the region was 527 kilograms, and the rainfall in the same period last year was 248.4 kilograms. Precipitation increased by 46 percent compared to normal and more than 100 percent compared to the same period last year.