Reference Data in Gdynia 11 indicators covering reference data for Gdynia. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 1.68 Degree days 2025 down 95.3% 1200th Cooling and heating degree days - Cities and FUAs — Change in cooling -17.72 Degree days 2025 down 206.4% 837th Cooling and heating degree days - Cities and FUAs 2,001 Degree days 2025 down 19.1% 385th Cooling and heating degree days - Cities and FUAs — Change in heating -879.63 Degree days 2025 down 116.3% 1289th Precipitation - Cities and FUAs — Extreme precipitation days 3.17 Days per year 2024 up 534.4% 948th Precipitation - Cities and FUAs — Change in extreme precipitation 1.61 Days per year 2024 up 252.6% 552nd Dependency ratio - Cities and FUAs 37.7 Percentage of population aged 15-64 years 2024 up 37.6% 241st Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0.0546 Percentage of built-up area 2022 up 7.1% 200th Internet speed - Cities and FUAs — Downloading speed 13.2 Percentage of national value 2025 down 56.0% 380th Internet speed - Cities and FUAs — Uploading speed -21.6 Percentage of national value 2025 down 3,700.0% 1074th