May weather forecast
Les Quartiers, Guernsey

May

Weather in May

Upon entering May, Guernsey's weather, emulating an expertly composed symphony, balances the equable escalation of temperatures with an accompanying humidity rise to 82%. An appreciable reduction in atmospheric pressure is reported, setting apart May's climatic dynamics. From May's relatively comfortable environment, the arrival of June unfolds a chapter of warmer temperatures accompanied by increased daylight hours. Minor fluctuations in wind speed set the stage for the light, pleasant breezes of summer. The sky entertains with fewer clouds allowing more sunshine to drench the city.

Temperature

May's arrival brings an average high-temperature of a still cool 12.8°C (55°F), slightly deviating from April's 11°C (51.8°F). Les Quartiers's nighttime temperatures in May settle close to daytime highs at an average of 10.6°C (51.1°F).

Humidity

In Les Quartiers, the average relative humidity in May is 82%.

Rainfall

In May, in Les Quartiers, the rain falls for 11.8 days. Throughout May, 27mm (1.06") of precipitation is accumulated. In Les Quartiers, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In Les Quartiers, the average length of the day in May is 15h and 22min.
On the first day of the month, sunrise is at 05:46 and sunset at 20:27. On the last day of May, sunrise is at 05:08 and sunset at 21:07 BST.

Sunshine

In May, the average sunshine is 9.1h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during May leads to these advisories:
Make use of precautions - It is urged to ward off sun damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

What are the temperatures in May?
May temperatures vary between a high-temperature of 12.8°C (55°F) and a low-temperature of 10.6°C (51.1°F).
What is the average humidity in May?
The average relative humidity in May is 82%.
How much does it rain in May?
In Les Quartiers, during May, the rain falls for 11.8 days and regularly aggregates up to 27mm (1.06") of precipitation.
When it does not snow?
In Les Quartiers, snow does not fall in February through December.
What is the average length of the day in May?
In May, the average day length is 15h and 22min.
What time are sunrise and sunset in May?
On the first day of May, sunrise is at 05:46 and sunset at 20:27. On the last day of the month, sunrise is at 05:08 and sunset at 21:07 BST.
How long on average sun shines in May?
In May, the average sunshine duration is 9.1h.
How high is the UV index in May?
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May - Les Quartiers, Guernsey
Average temperature in May
Les Quartiers, Guernsey
  • Average high temperature in May: 12.8°C

The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).

  • Average low temperature in May: 10.6°C

The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).

Average pressure in May - Les Quartiers, Guernsey
Average pressure in May
Les Quartiers, Guernsey
  • Average pressure in May: 1017.4mbar

The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).

Average wind speed in May - Les Quartiers, Guernsey
Average wind speed in May
Les Quartiers, Guernsey
  • Average wind speed in May: 23.7km/h

The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).

Average humidity in May - Les Quartiers, Guernsey
Average humidity in May
Les Quartiers, Guernsey
  • Average humidity in May: 82%

The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).

Average rainfall in May - Les Quartiers, Guernsey
Average rainfall in May
Les Quartiers, Guernsey
  • Average rainfall in May: 27mm

The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).

Average rainfall days in May - Les Quartiers, Guernsey
Average rainfall days in May
Les Quartiers, Guernsey
  • Average rainfall days in May: 11.8 days

The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).

Average snowfall in May - Les Quartiers, Guernsey
Average snowfall in May
Les Quartiers, Guernsey
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in May - Les Quartiers, Guernsey
Average snowfall days in May
Les Quartiers, Guernsey
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in May / Average sunshine in May - Les Quartiers, Guernsey
Average daylight in May /
Average sunshine in May
Les Quartiers, Guernsey
  • Average daylight in May: 15h and 2min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).

Average sunshine days in May - Les Quartiers, Guernsey
Average sunshine days in May
Les Quartiers, Guernsey
  • Average sunshine days in May: 16.3 days

The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).

Average UV index in May - Les Quartiers, Guernsey
Average UV index in May
Les Quartiers, Guernsey
  • Average UV index in May: 4

The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).

Average cloud cover in May - Les Quartiers, Guernsey
Average cloud cover in May
Les Quartiers, Guernsey
  • Average cloud cover in May: 40

The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in May - Les Quartiers, Guernsey
Average visibility in May
Les Quartiers, Guernsey
  • Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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