Skip to main content

 Climates to travel
 World climate guide
 

Home Africa N.America S.America Antarctica Asia Caribbean Europe M.East Oceania



Climate - Guernsey (United Kingdom)


Average weather, temperature, rainfall, sunshine hours

Flag - United Kingdom

Guernsey, where it is located




The climate of Guernsey is oceanic, cool and humid throughout the year.
The island is located in the English Channel, a short distance from the French coast of Lower Normandy, and belongs to Great Britain.
The average temperature ranges from 6,5 °C (43.5 °F) in February to 17 °C (62.5 °F) in August. Here are the average temperatures.
Guernsey - Average temperatures
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January596.8414844.3
February486.4404743.6
March6107.8425046
April7129.3445348.7
May91512495953.7
June121814.6536458.2
July142016.6576761.9
August142017576862.5
September131815.6566460
October111513525955.4
November81210475349.9
December6107.8434946
Year9.113.811.448.356.852.5

Precipitation amounts to 840 millimeters (33 inches) per year. The relatively wettest season is autumn, the least rainy is summer. Here is the average precipitation.
Guernsey - Average precipitation
MonthMillimetersInchesDays
January953.715
February702.811
March652.612
April552.210
May5029
June451.87
July401.68
August5028
September602.49
October953.713
November1054.115
December1154.516
Year84033.1131

Winter, from December to February, is quite cold: temperatures are not so low, but wind and humidity can increase the sensation of cold. The sky is often cloudy, and rainfall is frequent. Sometimes, intense Atlantic depressions can cause wind storms.
Snowfalls are relatively rare and not abundant. Usually, cold spells are not intense and do not last long. The temperature rarely drops below -3 °C (26.5 °F), however, it dropped to -5 °C (23 °F) in February 1978 and in January 1985, to -7.5 °C (18.5 °F) in January 1987, to -7 °C (19.5 °F) in February 1991, to -4.5 °C (24 °F) in January 1997, and to -4 °C (25 °F) in February 2018.

In spring, from March to May, the temperature slowly rises, and Atlantic fronts become a bit less frequent. In May, it is often still quite cold, especially in the first half of the month.

Summer, from June to August, is cool, with quite frequent rains, but also with a bit of good weather. Sometimes fog can form.
Hot days are rare: the temperature may not reach 25 °C (77 °F) for an entire month. However, it can sometimes exceed 30 °C (86 °F). It reached reached 31 °C (88 °F) in June 1976, 33 °C (91.5 °F) in August 1990, 34 °C (93 °F) in August 2003, 32 °C (89.5 °F) in July 2019, and 31 °C (88 °F) in August 2020.

Autumn, from September to November, is gray, cloudy and rainy, and with each passing week, it gets progressively colder. In November, the wind is often moderate or strong.

St. Peter Port

The sun in Guernsey does not shine often from October to March (although it can come out between one disturbance and another), while from April to September, it shines for an acceptable number of hours. In one year, there are 1,865 hours of sunshine: we are at the levels of the English south coast, which is the highest in Great Britain. Here are the average sunshine hours per day.
Guernsey - Sunshine hours
MonthAverageTotal
January260
February385
March4130
April6.5195
May7.5235
June8245
July8250
August7.5230
September6180
October4115
November2.580
December260
Year5.11865

The sea is cold all year round, however, from July to September the water temperature reaches 17/18 °C (62/64 °F). Here are the average sea temperatures.
Guernsey - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1050
February948
March948
April1050
May1254
June1457
July1763
August1864
September1763
October1559
November1355
December1254
Year1355.5

Best Time


The best time to visit Guernsey runs from June to mid-September. July and August are the warmest months, or the least cool, however, it's better to bring a sweatshirt and a light jacket also in midsummer.



© Copyright Climatestotravel.com. 

Back to Europe --> United Kingdom

All the countries



Share this page:

Facebook Twitter LinkedIn Whatsapp Email




Search in the website:

Home About Contact Us Link Policy
Home
All the countries
About
Contact Us
Link
Policy