London
United Kingdom
Long-term weather forecast
Long-term weather forecast
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July weather forecast and Climate
London, United Kingdom

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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!
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  • The 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).

  • The 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).

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  • The 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).

  • The 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).

  • The average daylight in July: 16h

The month with the longest days is June (Average daylight: 17h).
Months with shortest days are January and December (Average daylight: 8h).

  • The 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).

  • The 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).

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