Reference Data in Osaka 15 indicators covering reference data for Osaka. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 489.11 Degree days 2025 up 90.6% 215th Cooling and heating degree days - Cities and FUAs — Change in cooling 183.82 Degree days 2025 up 477.7% 63rd Cooling and heating degree days - Cities and FUAs 1,454 Degree days 2025 up 3.4% 704th Cooling and heating degree days - Cities and FUAs — Change in heating -135.98 Degree days 2025 up 26.0% 337th Cooling and heating degree days - Cities and FUAs — Change in heating 0.2743 % change on previous year 2025 up 100.3% 9th Cooling and heating degree days - Cities and FUAs, annual growth rate 0.0254 % change on previous year 2025 up 100.2% 9th Cooling and heating degree days - Cities and FUAs — Change in cooling -3.24 % change on previous year 2025 up 98.9% 2nd Cooling and heating degree days - Cities and FUAs — Cooling degree -1.24 % change on previous year 2025 up 90.0% 2nd Precipitation - Cities and FUAs — Extreme precipitation days 32.67 Days per year 2024 up 56.2% 53rd Precipitation - Cities and FUAs — Change in extreme precipitation 10.68 Days per year 2024 up 1,096.4% 36th Dependency ratio - Cities and FUAs 46.6 Percentage of population aged 15-64 years 2020 up 34.3% 71st Wind threats - Cities and FUAs — Exposure to wind threats 60.94 Percentage of area 2023 up 118.4% 118th Coastal flooding - Cities and FUAs — Built-up area exposure to 0.2374 Percentage of built-up area 2022 up 19.8% 150th Internet speed - Cities and FUAs — Downloading speed -0.7 Percentage of national value 2025 up 95.4% 906th Internet speed - Cities and FUAs — Uploading speed -10.9 Percentage of national value 2025 up 16.8% 914th