The climate in London is temperate, with annual average temperatures spanning 7°C / 45°F during January up to 22°C / 72°F in July.
Precipitation is distributed throughout the year, averaging 56 mm / 2.2 inches monthly, peaking in October (65 mm / 2.6 inches) and reaching its lowest in April (46 mm / 1.8 inches).
UV peaks in June (index 7) and drops to its lowest in December (index 1); strong sun protection is essential during summer months.
The longest days occur in June with around 16.5 hours of daylight, while December has the shortest days at about 7.9 hours.
Whether you prefer warm summers or milder winters, London provides varied conditions throughout the year.
Find the best dates. Understand the conditions. Pack with confidence.
The big-picture stats that matter for planning your visit to London.
Average highs up to 21.9°C and lows down to 2.0°C.
October averages 65 mm.
Typical peak UV is Moderate.
Roughly 8 hrs to 17 hrs.
Average around 15 km/h, peaking in February.
Our top-rated months for visiting London, based on long-term weather comfort and conditions
Tip: click on a card to see detailed daily weather averages for that month.
Visiting soon? Here's the next 7 days of weather for London, or see an hourly breakdown for the next 14 days.
Across the year, daytime highs average about 14°C (57°F), with nights near 7°C (45°F). Overall it feels cool by day and cold after dark. Daylight is fairly typical, with enough time for sightseeing. It tends to be on the cloudier side, with fewer blue-sky days.
The driest month is usually April, with around 46 mm (1.8 in) of rain. Most other months sit somewhere in between, with a mix of dry and showery days.
UV tends to peak in June, when UV levels are often high (around 7). Regular sunscreen and a hat are recommended.
Across the year, average winds sit around 15 km/h (9 mph), with gusts on windier days up to about 70 km/h (43 mph). Overall it is it is a notably windy place, and strong gusts are fairly common.
On average, days offer about 12 hours of daylight. Daylight is fairly typical, with enough time for sightseeing.