London
United Kingdom
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
London, United Kingdom

The large Thames river in London overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom, on a cloudy evening after sunset
The large Thames river in London overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom, on a cloudy evening after sunset
July is the hottest month of the year in London with the average temperatures in the 13.9°C (57°F) to 23.3°C (73.9°F) range. The heat is bearable as the sun is seldom scorching, and few days cross 35°C (95°F).
Evenings are comfortable as the daylight stretches to 16 hours. The core area of the city warms up to 9 degrees more than the surroundings due to the urban heat island effect.
The peak of the summer season coincides with swelling crowds in London. Beware, July may throw unexpected storms and floods!

What is the warmest month in London?

July is the warmest month in London, United Kingdom, with an average high-temperature of 23.5°C (74.3°F) and an average low-temperature of 13.9°C (57°F).

What is the temperature in July in London?

The average high-temperature, in July, in London, United Kingdom, is 23.5°C (74.3°F), while the average low-temperature is 13.9°C (57°F).

How much does it rain in London in July?

In London, United Kingdom, in July, it is raining for 7.7 days, with typically 44.5mm (1.8") of accumulated precipitation.

What is the average length of the day in July in London?

In London, the average length of the day in July is 16.1h.

What is the month with the most sunshine in London?

June and July, with an average of 6.8h of sunshine, are months with the most sunshine in London.

How many hours of sunshine does London have in July?

In July, the average sunshine in London, United Kingdom, is 6.8h.

What is the month with the highest UV index in London?

June and July, with an average maximum UV index of 6, are months with the highest UV index in London, United Kingdom.

What is the UV index reading in July in London?

In July, the average daily maximum UV index in London is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in July - London, United Kingdom
  • Average high temperature in July: 23.5°C

The warmest month (with the highest average high temperature) is July (23.5°C).
The month with the lowest average high temperature is January (8.1°C).

  • Average low temperature in July: 13.9°C

The month with the highest average low temperature is July (13.9°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).

Average rainfall in July - London, United Kingdom
  • Average rainfall in July: 44.5mm

The wettest month (with the highest rainfall) is October (68.5mm).
The driest month (with the lowest rainfall) is February (40.9mm).

Average rainfall days in July - London, United Kingdom
  • Average rainfall days in July: 7.7 days

The month with the highest number of rainy days is January (11.1 days).
The month with the lowest number of rainy days is August (7.5 days).

Average daylight in July / Average sunshine in July - London, United Kingdom
  • Average daylight in July: 16.1h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 7.9h).

  • Average sunshine in July: 6.8h

Months with most sunshine are June and July (Average sunshine: 6.8h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in July - London, United Kingdom
  • Average UV index in July: 6

Months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 0).