What Köppen climate classification does the city of London have? London has a Cfb climate classification.
Cfb means temperate oceanic climate. The first letter C places London in the temperate group. The second letter f indicates that it has no pronounced dry season, while the final letter b means mild or warm summers rather than hot summers. Under the usual thresholds, the warmest month averages below 22°C, while at least four months average above 10°C.
London’s position near the Atlantic helps moderate its temperatures. Westerly winds and maritime air make winters milder than those in many inland places at the same latitude, while summers are generally moderate. Rain falls throughout the year, although monthly totals vary and dry spells can still occur.
Cfb is widespread across western Europe and also appears in New Zealand, Tasmania, coastal southeastern Australia, and parts of southern Chile. London is sometimes confused with Cfa, the humid subtropical category, but its summers are not consistently hot enough for that classification. Dfb represents a cooler continental regime with colder winters.