UK actual and anomaly maps
These maps are based on the HadUK-Grid dataset (except for lightning).
Anomaly maps show the difference from, or percentage of, the 30-year average for the period 1961-1990 or 1991-2020, which is often of greater interest than absolute (actual) values. The 30-year standard reference periods follow World Meteorological Organization (WMO) guidance.
Maps for the most recent year are provisional. Maps for previous years are updated on an annual basis in-line with the latest version of this dataset.
Rainfall maps include all precipitation (rain, snow and hail). Seasonal and annual maps are available for: mean daily maximum temp.; mean daily minimum temp.; mean temperature; rainfall and sunshine.
Lightning maps are based on an automatic lightning location network across Europe.