UKCP09: 25km Gridded Long-Term Average Mean Air Temperature for the UK

UKCP09 25 km gridded data provides mean air temperature averages for the 1961-1990 climate baseline. The dataset was created with financial support from the UK Department for Environment, Food and Rural Affairs (Defra) and is promoted by the UK Climate Impacts Programme. It includes 17 text files and a single netCDF file covering monthly, seasonal, and annual averages.

Use Cases

• Establishing a historical climate baseline for the UK based on the 1961-1990 period mentioned in the description
• Comparing regional climate model outputs using the 25km grid resolution described
• Analyzing seasonal temperature patterns based on the provided monthly and seasonal averages

Strengths

• Data is based on a defined 30-year climate baseline (1961-1990)
• Includes 17 distinct files for monthly, seasonal, and annual analysis
• Provides data in both text and netCDF formats for flexibility

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Last updated 2026-07-08 13:32:26.430368; freshness should be verified

Provenance

Source

Met Office

Collection Method

Gridded averages from the HadRM3 regional climate model, with each 25km box averaging underlying 5km cell values.

Time Range

1961-1990

Freshness

Last updated 2026-07-08 13:32:26.430368

Geography

United Kingdom, 25km grid resolution