Reference Data in Colchester 11 indicators covering reference data for Colchester. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 2.93 Degree days 2025 down 61.1% 1172nd Cooling and heating degree days - Cities and FUAs — Change in cooling -7.7 Degree days 2025 down 149.5% 647th Cooling and heating degree days - Cities and FUAs 1,598 Degree days 2025 down 7.6% 629th Cooling and heating degree days - Cities and FUAs — Change in heating -342.08 Degree days 2025 down 63.0% 696th Precipitation - Cities and FUAs — Extreme precipitation days 0 Days per year 2024 down 100.0% 1295th Precipitation - Cities and FUAs — Change in extreme precipitation -1.12 Days per year 2024 down 228.2% 1111th Dependency ratio - Cities and FUAs 28.1 Percentage of population aged 15-64 years 2024 up 7.7% 679th Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 down 100.0% 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0.2637 Percentage of built-up area 2022 down 36.4% 145th Internet speed - Cities and FUAs — Downloading speed -11.7 Percentage of national value 2025 down 277.4% 1161st Internet speed - Cities and FUAs — Uploading speed -26.7 Percentage of national value 2025 down 88.0% 1128th