England, United Kingdom · 51.51°N, 0.13°W · Europe/London

London has a temperate oceanic climate with mild winters and warm summers. Daytime highs average about 9°C in January and 24°C in July, and winter nights hover just above freezing. The city is a heat island, so nights stay a few degrees warmer than in the surrounding countryside.

Over the past 50 years its average temperature has risen by about 0.4°C per decade, so older decades were noticeably cooler than these averages. Heatwaves above 30°C are increasingly common, and in July 2022 the UK recorded 40°C for the first time. Snow is brief and unreliable.

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