May weather forecast
Guernsey, Guernsey

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Weather in May

May designates the arrival of Spring in full swing in Guernsey, with more sun-filled hours and longer days. The average daily temperature elevates from 11°C (51.8°F) to a more comfortable 12.8°C (55°F), bringing about a gradual but noticeable change. Wildflowers dot the countryside during this month, painting the island in multiple hues. Despite the weather remaining largely dry, occasional rain showers can occur. The increased daylight allows for extended exploration of the islands, setting the scene for memorable outdoor adventures.

Temperature

May's climate in Guernsey shows a minor adjustment in average high-temperatures to a still fresh 12.8°C (55°F) from April's 11°C (51.8°F). Guernsey navigates through May with a barely noticeable decrease in temperature at night, stabilizing at a still cool 10.6°C (51.1°F).

Humidity

The average relative humidity in May is 82%.

Rainfall

In Guernsey, in May, during 11.8 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, in Guernsey, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Snowfall

In Guernsey, snow does not fall in February through December.

Daylight

The average length of the day in May in Guernsey, Guernsey, is 15h and 22min.
On the first day of May in Guernsey, 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.

Sunshine

In Guernsey, the average sunshine in May is 9.1h.

UV index

In Guernsey, Guernsey, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 4 translates into these guidelines:
Take necessary precautions - Defending against sun damage is advocated. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

What are the temperatures in Guernsey in May?

The average high-temperature, in May, in Guernsey, is 12.8°C (55°F), while the average low-temperature is 10.6°C (51.1°F).

What is the average humidity in May in Guernsey?

The average relative humidity in May in Guernsey, Guernsey, is 82%.

How many days does it rain in May in Guernsey?

In Guernsey, 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 Guernsey?

In Guernsey, snow does not fall in February through December.

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

The average day length in May in Guernsey is 15h and 22min.

When is the sunrise / sunset in May in Guernsey?

In May, on the first day of the month, sunrise is at 05:46 and sunset at 20:27. On the last day of the month, in Guernsey, Guernsey, sunrise is at 05:08 and sunset at 21:07 BST.

How many hours of sunshine does Guernsey have in May?

In Guernsey, Guernsey, the average sunshine duration in May is 9.1h.

What is the UV index intensity in May in Guernsey?

In Guernsey, Guernsey, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in May
Guernsey, Guernsey

Average temperature in May - Guernsey, 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
Guernsey, Guernsey

Average pressure in May - Guernsey, 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
Guernsey, Guernsey

Average wind speed in May - Guernsey, 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
Guernsey, Guernsey

Average humidity in May - Guernsey, 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
Guernsey, Guernsey

Average rainfall in May - Guernsey, 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
Guernsey, Guernsey

Average rainfall days in May - Guernsey, 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
Guernsey, Guernsey

Average snowfall in May - Guernsey, 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
Guernsey, Guernsey

Average snowfall days in May - Guernsey, 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
Guernsey, Guernsey

Average daylight in May / Average sunshine in May - Guernsey, 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
Guernsey, Guernsey

Average sunshine days in May - Guernsey, 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
Guernsey, Guernsey

Average UV index in May - Guernsey, 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
Guernsey, Guernsey

Average cloud cover in May - Guernsey, 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
Guernsey, Guernsey

Average visibility in May - Guernsey, 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).

Guernsey, Guernsey

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