Climate and monthly weather forecastClos du Valle, Guernsey
Climate and monthly weather forecast
The climate of Clos du Valle
In the geographical setting of Guernsey lies Clos du Valle, an area characterized by a Marine west coast climate, also known as the warm summer variant of the Köppen climate classification, coded as Cfb. This climatic model manifests in temperate weather accompanied by generous rainfall evenly distributed throughout the year.Analyzing the provided climate data signifies a fairly mild temperature pattern, spanning from lows of 7°C (44.6°F) in early spring to highs up to 17.8°C (64°F) during the peak of summer. This affirms the absence of excessive heat or cold, creating a comfortable year-round climate.
Relative humidity oscillates moderately between 77% and 84% throughout various months, marking Clos du Valle as a humid area. Rainfall shows fascinating dynamics, peaking at approximately 87mm (3.43") in November, while the driest conditions appear around July, dropping to a scanty 26mm (1.02"). It's noteworthy that precipitation predominates in the form of rainfall as no significant snowfall is recorded.
To support its Cfb climate classification, Clos du Valle receives moderate daylight hours ranging from 8.3 hours to a maximum of 16.2 daylight hours in a day. This happens to complement the average sunlight hours which range from a low 3.9 hours during winter to a pleasant high of 9.7 sunlight hours in July.
The best time to visit Clos du Valle
Bearing in mind the climate data, visiting Clos du Valle during the summer months of June, July, and August yields the most pleasant climate conditions. Temperature highs average between 15.2°C (59.4°F) and 17.8°C (64°F), paired with the longest daylight and sunlight hours. Also, rainfall is at its lowest point during this period, averaging between 26mm (1.02") and 41mm (1.61"), which makes it an ideal time for outdoor activities and sightseeing.The worst time to visit Clos du Valle
The climate data suggests that the months of November and December may prove challenging for travellers, with rainfall reaching up to 87mm (3.43") and 70mm (2.76") respectively. Complementing this notion is the short daylight and sunlight hours, making it harder to explore the area. Temperatures also fall to cooler measures during these months, which could deter certain visitors.Spring weather in Clos du Valle
As the year progresses from March to May in Clos du Valle, temperatures rise gradually from 9.8°C (49.6°F) to 12.8°C (55°F). Daylight also extends from 11.9 hours in March up to 15.4 hours in May. Though rainfall does decrease over this period, it remains notably present averaging from 38mm (1.5") to 27mm (1.06"). This underlines that while temperatures might be agreeable, visitors need to be prepared for possible showers.Summer weather in Clos du Valle
Summer in Clos du Valle, from June to August, showcases the most agreeable weather. Temperatures peak, averaging between 15.2°C (59.4°F) and 17.8°C (64°F), paired with maximum daylight and sunlight hours. It is during these months that Clos du Valle experiences the lowest rainfall, especially in July that gets as low as 26mm (1.02"), favouring outdoor excursions and activities.Autumn weather in Clos du Valle
Moving into the autumn months between September and November, the climate in Clos du Valle changes significantly. Temperatures take a downward slope from 17.2°C (63°F) in September to 13°C (55.4°F) in November. Rainfall also rises greatly, surging from 31mm (1.22") in September up to the year's maximum of 87mm (3.43") in November. Autumn thus presents a wetter and cooler atmosphere compared to the preceding seasons.Winter weather in Clos du Valle
Clos du Valle's winter, spanning from December to February, positions itself as the coldest part of the year. Temperatures fall between 9.2°C (48.6°F) to 11.1°C (52°F), the lowest of the yearly cycle. While snowfall remains absent, rainfall persists with relative consistence, averaging around 63mm (2.48") in December and 51mm (2.01") in February. Sunlight hours decrease to a low of 3.9 hours a day, indicating shorter and chillier days.Weather in January
Clos du Valle, Guernsey begins the year with a cool climate, with the first month experiencing a surge in wind speeds. January's strong gusts reach up to 47.7km/h (29.6mph), setting a blustery tone for the year's onset. The average daily sunlight is limited; the higher latitudes result in short days. Weather in January »Weather in February
As the year progresses into February, Guernsey's weather continues to experience chill from January. However, a slight reduction in wind speeds and an increase in daily sunshine hours signifies the transition towards spring. The island welcomes a decrease in rainfall as compared to January, signaling a drier season ahead. Weather in February »Weather in March
March brings a welcome change to Clos du Valle's weather scene. The significant increase in daily sunshine to 6.2 hours on average slightly warms up the day. Relative humidity levels begin to rise in anticipation of the forthcoming rainy season. Weather in March »Weather in April
By the time April arrives in Guernsey, there's a pleasant shift in weather, showcasing the beauty of spring. The most noticeable change is with rainfall, registering the year's lowest at 32mm (1.26"). Burgeoning greenery across the island reflects the revitalizing sunshine. Weather in April »Weather in May
May's weather in Clos du Valle manifests the epitome of spring. Even though daylight hours make a jump to 15.4, the weather remains pleasant. Relative humidity has a noticeable increase, resonating with the increasing greenery. While rainfall frequency decreases, the light showers add charm to the month’s vibrant natural scenery. Weather in May »Weather in June
June welcomes summer in Guernsey, introducing moderate warmth. Daylight reaches its peak, allowing for long lovely days under the sun. However, even under the sun, temperatures remain comfortable due to the island's maritime climate. Weather in June »Weather in July
July in Clos du Valle features the warmest climate of the year. The temperature peaks to a comfortable 16.9°C (62.4°F) on average. Though rainfall enters a lull phase, the increased humidity compensates for the moisture levels. The abundance of sunshine and excess daylight energizes the outdoors. Weather in July »Weather in August
August in Guernsey enjoys an extension of the warmth from July. However, in contradiction to the continued heat, rainfall levels see a significant increase to 41mm (1.61"). The month’s tumultuous mix of sunshine and showers creates its unique charm. Weather in August »Weather in September
Entering September, Guernsey experiences a gradual farewell to the summer heat. The most prominent shift during this month is the receding daylight, dropping from August's 14.4 hours to 12.6 hours. Nature begins to display the initial signs of autumn. Weather in September »Weather in October
October’s weather in Clos du Valle represents a transition towards the colder seasons. Rainfall registers an increase, peaking at 58mm (2.28"), the second-highest for the year. The lush landscapes now exhibit shades of autumn, with leaves turning russet and gold. Weather in October »Weather in November
November in Guernsey is marked by cool temperatures and the highest average rainfall of the year, at a significant 87mm (3.43"). The island succumbs to a grayish waft, with more clouds eliciting a somber vibe. Footprints of autumn deeply imprint the atmosphere throughout the month. Weather in November »Weather in December
December ushers in the official start of winter in Clos du Valle. The cooler conditions from November persist, with average temperatures dipping lower. A meek sunlight barely warms the day allowing the chilly atmosphere to prevail. Weather in December »Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Clos du Valle, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.
January is the only month when snow falls in Clos du Valle.
January is the month with the most snowfall. Snow falls for 0.3 days and accumulates 2mm (0.08") of snow.
In Clos du Valle, Guernsey, during the entire year, snow falls for 0.5 days and aggregates up to 2mm (0.08") of snow.
January, November and December, with an average of 3.9h of sunshine, are months with the least sunshine.
February is the month when Clos du Valle, Guernsey, sees the average lowest temperatures, with a high of 9.2°C (48.6°F) and a low of 7°C (44.6°F).
February through December are months without snowfall.
With an average maximum UV index of 2, February is the month with the lowest UV index.
June and July, with an average relative humidity of 84%, are most humid months in Clos du Valle, Guernsey.
With an average of 16h and 12min of daylight, June has the longest days of the year in Clos du Valle.
July is the month with the least rainfall in Clos du Valle. Rain falls for 12.8 days and accumulates 26mm (1.02") of precipitation.
July has the most sunshine of the year in Clos du Valle, Guernsey, with an average of 9.7h of sunshine.
The months with the highest UV index in Clos du Valle are July through September, with an average maximum UV index of 5.
In Clos du Valle, August registers the highest temperatures, averaging 17.8°C (64°F) at the peak and 15.8°C (60.4°F) at the lowest.
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 01:00, and the time zone reverts from GMT to BST.
November and December, with an average relative humidity of 77%, are the least humid months.
November is the month with the most rainfall. Rain falls for 22.8 days and accumulates 87mm (3.43") of precipitation.
December has the shortest days of the year in Clos du Valle, with an average of 8h and 12min of daylight.
Average temperature
Clos du Valle, Guernsey
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).
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
Clos du Valle, Guernsey
- Average pressure in January:
1016.1mbar - Average pressure in February:
1015.2mbar - Average pressure in March:
1016.2mbar - Average pressure in April:
1015.6mbar - Average pressure in May:
1017.4mbar - Average pressure in June:
1016.9mbar
- Average pressure in July:
1016.7mbar - Average pressure in August:
1016.4mbar - Average pressure in September:
1017.9mbar - Average pressure in October:
1015.7mbar - Average pressure in November:
1011.5mbar - Average pressure in December:
1016.5mbar
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
Clos du Valle, Guernsey
- Average wind speed in January:
34.1km/h - Average wind speed in February:
34km/h - Average wind speed in March:
30.3km/h - Average wind speed in April:
25km/h - Average wind speed in May:
23.7km/h - Average wind speed in June:
22.8km/h
- Average wind speed in July:
21.9km/h - Average wind speed in August:
22.8km/h - Average wind speed in September:
25.8km/h - Average wind speed in October:
29.1km/h - Average wind speed in November:
34.8km/h - Average wind speed in December:
36km/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
Clos du Valle, Guernsey
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
Clos du Valle, Guernsey
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days
Clos du Valle, Guernsey
- Average rainfall days in January:
22 days - Average rainfall days in February:
17.7 days - Average rainfall days in March:
17 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
11.5 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
14 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
18.5 days - Average rainfall days in November:
22.8 days - Average rainfall days in December:
21.4 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
Clos du Valle, Guernsey
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
Clos du Valle, Guernsey
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
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 / Average sunshine
Clos du Valle, Guernsey
- Average daylight in January:
8h and 42min - Average daylight in February:
10h and 6min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 48min - Average daylight in May:
15h and 24min - Average daylight in June:
16h and 12min
- Average daylight in July:
15h and 48min - Average daylight in August:
14h and 24min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 6min - Average daylight in December:
8h and 12min
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 January:
3h and 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 6min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
9h and 42min - Average sunshine in August:
9h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
4h and 54min - Average sunshine in November:
3h and 54min - Average sunshine in December:
3h and 54min
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
Clos du Valle, Guernsey
- Average sunshine days in January:
5.5 days - Average sunshine days in February:
6.9 days - Average sunshine days in March:
10.7 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
16 days
- Average sunshine days in July:
15.4 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
13.1 days - Average sunshine days in October:
8.6 days - Average sunshine days in November:
4 days - Average sunshine days in December:
5.3 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
Clos du Valle, Guernsey
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
Clos du Valle, Guernsey
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
Clos du Valle, Guernsey
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).
