CLIMATE:
London has a temperate marine climate, like much of the British Isles, with regular but generally light precipitation throughout the year—unlike the rest of the UK and even the nearby coast. The warmest month is July, with an average temperature range at Greenwich of 13.6 °C to 22.8 °C (56.5 to 73.0 °F). Record high temperatures of up to 38.1 °C (101 °F) were recorded in different parts of London on 10 August 2003. The coolest month is January, averaging 2.4 °C to 7.9 °C (35.6 to 46.2 °F). Average annual precipitation is 583.6 mm (22.98 in), with February on average the driest month. Snow is relatively uncommon, particularly because heat from the urban area can make London up to 5 °C (9 °F) hotter than the surrounding areas in winter. Light snowfall, however, is generally seen a few times every year. London is in USDA Hardiness zone 9, and AHS Heat Zone 2.
| Weather averages for London |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Average high °C (°F) |
7.9 (46) |
8.2 (47) |
10.9 (52) |
13.3 (56) |
17.2 (63) |
20.2 (68) |
22.8 (73) |
22.6 (73) |
19.3 (67) |
15.2 (59) |
10.9 (52) |
8.8 (48) |
14.8 (59) |
| Average low °C (°F) |
2.4 (36) |
2.2 (36) |
3.8 (39) |
5.2 (41) |
8.0 (46) |
11.1 (52) |
13.6 (56) |
13.3 (56) |
10.9 (52) |
8.0 (46) |
4.8 (41) |
3.3 (38) |
7.2 (45) |
| Rainfall mm (inch) |
51.9 (2) |
34.0 (1.3) |
42.0 (1.7) |
45.2 (1.8) |
47.2 (1.9) |
53.0 (2.1) |
38.3 (1.5) |
47.3 (1.9) |
56.9 (2.2) |
61.5 (2.4) |
52.3 (2.1) |
54.0 (2.1) |
583.6 (23) | |
