Reference Data in Saint-Brieuc 12 indicators covering reference data for Saint-Brieuc. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 8.01 Degree days 2025 down 59.1% 1101st Cooling and heating degree days - Cities and FUAs — Change in cooling -8.64 Degree days 2025 down 391.4% 667th Cooling and heating degree days - Cities and FUAs 889.55 Degree days 2025 down 38.0% 929th Cooling and heating degree days - Cities and FUAs — Change in heating -784.19 Degree days 2025 down 227.4% 1258th Precipitation - Cities and FUAs — Extreme precipitation days 1.67 Days per year 2024 down 16.7% 1163rd Precipitation - Cities and FUAs — Change in extreme precipitation -0.2333 Days per year 2024 down 333.3% 917th Dependency ratio - Cities and FUAs 40.3 Percentage of population aged 15-64 years 2022 up 25.9% 175th Wind threats - Cities and FUAs — Exposure to wind threats 100 Percentage of area 2023 unchanged 1st Coastal flooding - Cities and FUAs — Built-up area exposure to 0.3908 Percentage of built-up area 2022 down 9.0% 137th Main mode of transport to work - Cities and FUAs — Employed persons 27,083 Persons 2022 up 5.3% 272nd Internet speed - Cities and FUAs — Downloading speed -2.5 Percentage of national value 2025 up 67.1% 972nd Internet speed - Cities and FUAs — Uploading speed 0.3 Percentage of national value 2025 down 97.4% 723rd