Reference Data in Porto 15 indicators covering reference data for Porto. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 137.03 Degree days 2025 down 7.8% 6th Cooling and heating degree days - Cities and FUAs — Change in cooling -13.42 Degree days 2025 down 655.9% 5th Cooling and heating degree days - Cities and FUAs 747.72 Degree days 2025 down 5.8% 7th Cooling and heating degree days - Cities and FUAs — Change in heating -173.03 Degree days 2025 down 35.9% 2nd Cooling and heating degree days - Cities and FUAs — Change in heating 3.76 % change on previous year 2025 up 109.9% 8th Cooling and heating degree days - Cities and FUAs, annual growth rate 0.9132 % change on previous year 2025 up 121.5% 7th Cooling and heating degree days - Cities and FUAs — Change in cooling -149.21 % change on previous year 2025 down 256.7% 9th Cooling and heating degree days - Cities and FUAs — Cooling degree -5.54 % change on previous year 2025 down 117.7% 3rd Precipitation - Cities and FUAs — Extreme precipitation days 14.73 Days per year 2024 down 43.9% 4th Precipitation - Cities and FUAs — Change in extreme precipitation -2.06 Days per year 2024 down 121.7% 9th Dependency ratio - Cities and FUAs 37.5 Percentage of population aged 15-64 years 2024 up 31.6% 3rd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 down 100.0% 3rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 1st Internet speed - Cities and FUAs — Downloading speed 13.4 Percentage of national value 2025 down 34.0% 4th Internet speed - Cities and FUAs — Uploading speed 13.8 Percentage of national value 2025 up 20.0% 3rd