England's rainfall varies dramatically—2.5× difference between the wettest (Lake District) and driest (East Anglia) regions—driven by prevailing westerlies, orographic lift, and rain shadows.
| Region | Annual Rainfall (mm) | Annual Rainfall (inches) | Character |
|---|---|---|---|
| Northwest England (Lake District, Pennines) | 1,200–2,000+ | 47–79+ | Orographic maximum; Seathwaite ~3,500 mm |
| Southwest England (Dartmoor, Exmoor, Cornwall) | 1,000–1,600 | 39–63 | Atlantic frontal systems + elevation |
| Yorkshire & The Humber | 800–1,200 | 31–47 | Pennine rain shadow east of peaks |
| West Midlands | 700–900 | 28–35 | Moderate; urban heat island reduces snow |
| Northeast England | 650–850 | 26–33 | Rain shadow of Scottish hills + Pennines |
| East Midlands | 600–750 | 24–30 | Continental influence, summer convection |
| London & Southeast | 550–700 | 22–28 | Driest broad region; Thames rain shadow |
| East of England (East Anglia) | 500–650 | 20–26 | Lowest; continental air, flat terrain |