Reference Data in Mainz 11 indicators covering reference data for Mainz. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 64.14 Degree days 2025 down 55.1% 730th Cooling and heating degree days - Cities and FUAs — Change in cooling -8.27 Degree days 2025 down 111.8% 658th Cooling and heating degree days - Cities and FUAs 1,912 Degree days 2025 down 4.9% 442nd Cooling and heating degree days - Cities and FUAs — Change in heating -393.05 Degree days 2025 down 33.2% 809th Precipitation - Cities and FUAs — Extreme precipitation days 4 Days per year 2024 up 100.1% 846th Precipitation - Cities and FUAs — Change in extreme precipitation 2.62 Days per year 2024 up 323.1% 375th Dependency ratio - Cities and FUAs 25.9 Percentage of population aged 15-64 years 2025 up 2.8% 784th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Internet speed - Cities and FUAs — Downloading speed 10.1 Percentage of national value 2025 down 70.2% 481st Internet speed - Cities and FUAs — Uploading speed -18.5 Percentage of national value 2025 down 340.3% 1033rd