August weather forecast and climate
London, United Kingdom

The large Thames river overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom
The large Thames river overlooking the Westminster Palace and the Big Ben clock tower in London, United Kingdom

Weather in August

The last month of the summer, August, is another pleasant month in London, United Kingdom, with temperature in the range of an average high of 21.9°C (71.4°F) and an average low of 13.8°C (56.8°F).

Temperature

In August, the average high-temperature is essentially the same as in July - a still agreeable 21.9°C (71.4°F). In August, in London, the average low-temperature is 13.8°C (56.8°F).

Humidity

With an average relative humidity of 72%, August is the least humid month.

Rainfall

In August, in London, the rain falls for 13.5 days. Throughout August, 38mm (1.5") of precipitation is accumulated. Throughout the year, there are 151.7 rainfall days, and 370mm (14.57") of precipitation is accumulated.

Snowfall

In London, United Kingdom, snow does not fall in May through October.

Daylight

The average length of the day in London is 14.5h.

Sunshine

August has the most sunshine of the year, with an average of 7.9h of sunshine.

UV index

In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in August in London?

The average high-temperature, in August, in London, is 21.9°C (71.4°F), while the average low-temperature is 13.8°C (56.8°F).

What is the least humid month in London?

The least humid month is August, with an average relative humidity of 72%.

What is the average humidity in August in London?

The average relative humidity in August in London, United Kingdom, is 72%.

How many days does it rain in August in London?

In August, the rain falls for 13.5 days. Throughout August, 38mm (1.5") of precipitation is accumulated.

When it does not snow in London?

May through October are months without snowfall.

How many hours of daylight does London have in August?

In August, the average length of the day is 14.5h.

What month has the most sunshine in London?

August has the most sunshine of the year in London, United Kingdom, with an average of 7.9h of sunshine.

How many hours of sunshine does London have in August?

In August, the average sunshine is 7.9h.

What is the UV index reading in August in London?

In London, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in August
London, United Kingdom

Average temperature in August - London, United Kingdom
  • Average high temperature in August: 21.9°C

The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (6.8°C).

  • Average low temperature in August: 13.8°C

The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).

[Resources]

Average pressure in August
London, United Kingdom

Average pressure in August - London, United Kingdom
  • Average pressure in August: 1014.9mbar

The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

[Resources]

Average wind speed in August
London, United Kingdom

Average wind speed in August - London, United Kingdom
  • Average wind speed in August: 12.8km/h

The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is September (12.6km/h).

[Resources]

Average humidity in August
London, United Kingdom

Average humidity in August - London, United Kingdom
  • Average humidity in August: 72%

The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (72%).

[Resources]

Average rainfall in August
London, United Kingdom

Average rainfall in August - London, United Kingdom
  • Average rainfall in August: 38mm

The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is April (22mm).

[Resources]

Average rainfall days in August
London, United Kingdom

Average rainfall days in August - London, United Kingdom
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is September (9.8 days).

[Resources]

Average snowfall in August
London, United Kingdom

Average snowfall in August - London, United Kingdom
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (16mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

[Resources]

Average snowfall days in August
London, United Kingdom

Average snowfall days in August - London, United Kingdom
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in August /
Average sunshine in August
London, United Kingdom

Average daylight in August / Average sunshine in August - London, United Kingdom
  • Average daylight in August: 14.5h

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

  • Average sunshine in August: 7.9h

The month with the most sunshine is August (Average sunshine: 7.9h).
The month with the least sunshine is February (Average sunshine: 3.6h).

[Resources]

Average sunshine days in August
London, United Kingdom

Average sunshine days in August - London, United Kingdom
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is June (12.2 days).

[Resources]

Average UV index in August
London, United Kingdom

Average UV index in August - London, United Kingdom
  • Average UV index in August: 4

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in August
London, United Kingdom

Average cloud cover in August - London, United Kingdom
  • Average cloud cover in August: 50

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 49).

[Resources]

Average visibility in August
London, United Kingdom

Average visibility in August - London, United Kingdom
  • Average visibility in August: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, October and December (9km).
Months with the lowest visibility are September and November (8km).

[Resources]