Reference Data in Rouen 12 indicators covering reference data for Rouen. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 15.91 Degree days 2025 down 68.4% 1015th Cooling and heating degree days - Cities and FUAs — Change in cooling -19.61 Degree days 2025 down 231.9% 864th Cooling and heating degree days - Cities and FUAs 1,582 Degree days 2025 down 8.5% 640th Cooling and heating degree days - Cities and FUAs — Change in heating -387.67 Degree days 2025 down 61.6% 790th Precipitation - Cities and FUAs — Extreme precipitation days 4.83 Days per year 2024 up 81.2% 766th Precipitation - Cities and FUAs — Change in extreme precipitation 3.31 Days per year 2024 up 189.1% 289th Dependency ratio - Cities and FUAs 29.5 Percentage of population aged 15-64 years 2022 up 14.8% 603rd 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 Percentage of built-up area 2022 — 277th Main mode of transport to work - Cities and FUAs — Employed persons 123,199 Persons 2022 up 5.8% 144th Internet speed - Cities and FUAs — Downloading speed 7.6 Percentage of national value 2025 down 18.3% 570th Internet speed - Cities and FUAs — Uploading speed 10.6 Percentage of national value 2025 up 307.7% 477th