Reference Data in Flensburg 11 indicators covering reference data for Flensburg. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 1.58 Degree days 2025 down 89.4% 1202nd Cooling and heating degree days - Cities and FUAs — Change in cooling -16.9 Degree days 2025 down 368.9% 828th Cooling and heating degree days - Cities and FUAs 1,360 Degree days 2025 down 37.7% 747th Cooling and heating degree days - Cities and FUAs — Change in heating -1,166 Degree days 2025 down 240.9% 1316th Precipitation - Cities and FUAs — Extreme precipitation days 2.67 Days per year 2024 down 11.1% 1040th Precipitation - Cities and FUAs — Change in extreme precipitation 0.9111 Days per year 2024 down 26.8% 671st Dependency ratio - Cities and FUAs 30.1 Percentage of population aged 15-64 years 2025 down 2.0% 566th 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 0.0629 Percentage of built-up area 2022 down 1.6% 194th Internet speed - Cities and FUAs — Downloading speed 18.1 Percentage of national value 2025 down 27.0% 242nd Internet speed - Cities and FUAs — Uploading speed -30.5 Percentage of national value 2025 down 463.1% 1175th