Reference Data in Koszalin 11 indicators covering reference data for Koszalin. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 6.5 Degree days 2025 down 85.9% 1125th Cooling and heating degree days - Cities and FUAs — Change in cooling -20.36 Degree days 2025 down 206.4% 876th Cooling and heating degree days - Cities and FUAs 2,238 Degree days 2025 down 3.3% 286th Cooling and heating degree days - Cities and FUAs — Change in heating -453.41 Degree days 2025 down 20.0% 988th Precipitation - Cities and FUAs — Extreme precipitation days 3.75 Days per year 2024 up 275.0% 894th Precipitation - Cities and FUAs — Change in extreme precipitation 2.09 Days per year 2024 up 417.6% 459th Dependency ratio - Cities and FUAs 39.9 Percentage of population aged 15-64 years 2024 up 58.3% 183rd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 down 100.0% 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0.2634 Percentage of built-up area 2022 down 2.2% 146th Internet speed - Cities and FUAs — Downloading speed 5.8 Percentage of national value 2025 up 307.1% 646th Internet speed - Cities and FUAs — Uploading speed -26.7 Percentage of national value 2025 up 5.3% 1128th