May 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 May

May, the last month of the spring, in London, is an enjoyable month, with average temperature ranging between max 16.8°C (62.2°F) and min 8.3°C (46.9°F).

Temperature

In May, the average high-temperature is essentially the same as in April - a comfortable 16.8°C (62.2°F). In London, in May, the average low-temperature is 8.3°C (46.9°F).

Humidity

In May, the average relative humidity in London, United Kingdom, is 75%.

Rainfall

In May, the rain falls for 14.3 days. Throughout May, 26mm (1.02") of precipitation is accumulated. Throughout the year, there are 151.7 rainfall days, and 370mm (14.57") of precipitation is accumulated.

Snowfall

In London snow does not fall in May through October.

Daylight

In May, the average length of the day is 15.6h.

Sunshine

In London, the average sunshine is 7.4h.

UV index

The average daily maximum UV index in London is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 May in London?

In London, in May, the average high-temperature is 16.8°C (62.2°F), and the average low-temperature is 8.3°C (46.9°F).

What is the average humidity in May in London?

The average relative humidity in May is 75%.

How many days does it rain in May in London?

In May, in London, the rain falls for 14.3 days. Throughout May, 26mm (1.02") of precipitation is accumulated.

Does it snow in London in May?

In May, it doesn't snow. April is the latest month when it typically snows.

When it does not snow in London?

May through October are months without snowfall in London.

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

In May, the average length of the day in London, United Kingdom, is 15.6h.

How long on average sun shines in May in London?

In London, the average sunshine in May is 7.4h.

What is the UV index reading in May in London?

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in May
London, United Kingdom

Average temperature in May - London, United Kingdom
  • Average high temperature in May: 16.8°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 May: 8.3°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 May
London, United Kingdom

Average pressure in May - London, United Kingdom
  • Average pressure in May: 1016.8mbar

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 May
London, United Kingdom

Average wind speed in May - London, United Kingdom
  • Average wind speed in May: 13.4km/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 May
London, United Kingdom

Average humidity in May - London, United Kingdom
  • Average humidity in May: 75%

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

[Resources]

Average rainfall in May
London, United Kingdom

Average rainfall in May - London, United Kingdom
  • Average rainfall in May: 26mm

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 May
London, United Kingdom

Average rainfall days in May - London, United Kingdom
  • Average rainfall days in May: 14.3 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 May
London, United Kingdom

Average snowfall in May - London, United Kingdom
  • Average snowfall in May: 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 May
London, United Kingdom

Average snowfall days in May - London, United Kingdom
  • Average snowfall days in May: 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 May /
Average sunshine in May
London, United Kingdom

Average daylight in May / Average sunshine in May - London, United Kingdom
  • Average daylight in May: 15.6h

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 May: 7.4h

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 May
London, United Kingdom

Average sunshine days in May - London, United Kingdom
  • Average sunshine days in May: 14.1 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 May
London, United Kingdom

Average UV index in May - London, United Kingdom
  • Average UV index in May: 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 May
London, United Kingdom

Average cloud cover in May - London, United Kingdom
  • Average cloud cover in May: 51

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 May
London, United Kingdom

Average visibility in May - London, United Kingdom
  • Average visibility in May: 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]