London

Greater London Weather & Climate: the United Kingdom

Climate by month across Greater London, the United Kingdom, average temperatures, rainfall and the best time to visit.

Climate overview of Greater London

Greater London is one of several regions in the United Kingdom, with temperatures that range from 8°C (46°F) in January to 23°C (73°F) during the peak of July. We've based our full climate overview on data from London, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Greater London, the months of June, July, August and September bring pleasant weather, with average temperatures ranging between 20°C (68°F) and 23°C (73°F).

The coldest months are usually in January, February and December.

Precipitation in Greater London remains relatively steady throughout the year, ranging from 68 mm (2.7 in) in November to 48 mm (1.9 in) in March.

Visitors hoping to maximize their time in the sun should consider planning their trip for July, when daylight hours are at their peak.

Explore Greater London by month

Pick a month to see the average temperature, rainfall and sunshine in Greater London — and find the best time to visit. (based on London)

Popular cities by month

Compare cities per month. Toggle cities on/off.

London Croydon Ilford Hounslow Harrow Kingston upon Thames
Day temperature (°C)
Monthly rainfall (mm)
Monthly sunshine (hours)

Climate map of Greater London

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)
32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.

London 9°C (48°F) 23°C (73°F) 3°C (37°F) 14°C (57°F) 716 mm (28 in) 1,675 hours
Croydon 9°C (48°F) 23°C (73°F) 3°C (37°F) 13°C (55°F) 734 mm (29 in) 1,675 hours
Ilford 9°C (48°F) 23°C (73°F) 3°C (37°F) 14°C (57°F) 698 mm (27 in) 1,609 hours
Hounslow 9°C (48°F) 23°C (73°F) 3°C (37°F) 14°C (57°F) 719 mm (28 in) 1,675 hours
Harrow 9°C (48°F) 23°C (73°F) 3°C (37°F) 14°C (57°F) 717 mm (28 in) 1,675 hours
Kingston upon Thames 9°C (48°F) 23°C (73°F) 3°C (37°F) 14°C (57°F) 727 mm (29 in) 1,675 hours

Places in Greater London, the United Kingdom

Select a city to see its average temperature, precipitation and hours of sunshine over the year.

Explore more

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.