Reference Data in Sendai 11 indicators covering reference data for Sendai. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 204.82 Degree days 2025 up 45.0% 493rd Cooling and heating degree days - Cities and FUAs — Change in cooling 95.67 Degree days 2025 up 197.9% 208th Cooling and heating degree days - Cities and FUAs 1,975 Degree days 2025 down 9.4% 405th Cooling and heating degree days - Cities and FUAs — Change in heating -528.37 Degree days 2025 down 62.8% 1102nd Precipitation - Cities and FUAs — Extreme precipitation days 17.95 Days per year 2024 down 8.3% 220th Precipitation - Cities and FUAs — Change in extreme precipitation 2.29 Days per year 2024 down 41.6% 419th Dependency ratio - Cities and FUAs 39.3 Percentage of population aged 15-64 years 2020 up 40.9% 195th Wind threats - Cities and FUAs — Exposure to wind threats 14.09 Percentage of area 2023 down 80.1% 186th 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 4.6 Percentage of national value 2025 up 207.0% 702nd Internet speed - Cities and FUAs — Uploading speed 3.4 Percentage of national value 2025 up 142.5% 645th