Reference Data in Osaka 11 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% 216th 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% 705th Cooling and heating degree days - Cities and FUAs — Change in heating -135.98 Degree days 2025 up 26.0% 337th 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% 914th Internet speed - Cities and FUAs — Uploading speed -10.9 Percentage of national value 2025 up 16.8% 923rd