Climate and monthly weather forecastDuval, Guernsey
Climate and monthly weather forecast
The climate of Duval
Located in Guernsey, Duval experiences a predominantly Marine west coast, warm summer climate, which falls under the Cfb category of the Köppen climate classification. Throughout the year, average monthly temperatures range from a low of 7°C (44.6°F) to a high of 17.8°C (64°F), accompanied by relative humidity levels fluctuating between 77% and 84%.Rainfall in Duval distributes across the year, presenting from a lower limit of 26mm (1.02") in July to an upper limit of 87mm (3.43") in November. Even the driest month, July, witnesses an average of 12.8 rainfall days, signifying a damp climate for the most part of the year. The frequency of rainfall days coordinates with the amount of rainfall, swelling to an annual peak of 22.8 days in November.
While Duval's latitude could lead some to anticipate snowfall during the colder months, it is actually a scarcity, with only 2mm (0.08") of snowfall and 0.3 snowfall days recorded in January each year. Furthermore, wind speeds in Duval increase from an annual minimum average of 21.9km/h (13.6mph) in July to a maximum of 36km/h (22.4mph) in December, leading to a more blustery winter season.
The best time to visit Duval
The preferable timing for visiting Duval hinges upon numerous factors such as the desired activities and weather preferences. For those seeking milder temperatures and comparatively less rainfall, April to July emerges as an optimal window. During this period, average temperatures hover from 11°C (51.8°F) to 16.9°C (62.4°F), and the rainfall remains fairly consistent, ranging from 26mm (1.02") to 33mm (1.3"). Moreover, daylight lasts between 13.8 hours in April to 16.2 hours in June, offering abundant time to explore and enjoy local attractions.The worst time to visit Duval
Visitors may find November to February less advisable for visiting Duval due to less favorable weather conditions. Temperatures during these months fall into the colder spectrum, between 7°C (44.6°F) and 9.8°C (49.6°F). Additionally, both November and December record the most rainfall, with 87mm (3.43") and 70mm (2.76") respectively. The number of daylight hours is markedly reduced in these months, hitting a yearly minimum of 8.3 hours in December, potentially limiting outdoor activities.Spring weather in Duval
Spring nods in Duval with temperatures ranging from 7.4°C (45.3°F) in March to a pleasant 12.8°C (55°F) in May. Rainfall tends to decrease during this season, reducing from 38mm (1.5") in March to 27mm (1.06") in May. The number of daylight hours also progressively increases, offering from 11.9 hours in March to an appreciable 15.4 hours in May. The relative humidity remains fairly constant, averaging at 81%.Summer weather in Duval
Summer in Duval is characterized by the warmest weather of the year, with temperatures varying between 15.2°C (59.4°F) in June and reaching a peak at 17.8°C (64°F) in August. The rainfall level remains consistent, with an annual lowest total of 26mm (1.02") in July, while the average number of rainy days is 12.8. The duration of daylight extends to approximately 16.2 hours in June, slightly decreasing to 15.8 hours by July.Autumn weather in Duval
The transition to autumn in Duval introduces lower temperatures and increased rainfall. The temperature decreases steadily from 17.2°C (63°F) in September to 13°C (55.4°F) in November. Correspondingly, the rainfall totals escalate from moderate levels of 31mm (1.22") in September to a high 87mm (3.43") in November. The daylight duration shortens throughout autumn, from 12.6 hours in September dwindling to 9.1 hours by November.Winter weather in Duval
Winter in Duval brings the coldest months, with average temperatures oscillating between 9.2°C (48.6°F) in February and 11.1°C (52°F) in December. This period also witnesses the highest rainfall, reaching up to 70mm (2.76") in December. Correspondingly, the frequency of rainfall days increases, averaging 21.4 days in December and 17.7 days in February. With an average daylight duration of 8.3 hours in December increasing to 10.2 hours in February, days in winter are significantly shorter.Weather in January
Commencing the year, January witnesses mild, breezy weather with a maximum temperature of 9.8°C (49.6°F) in Duval, Guernsey. Being relatively humid, the landscape shimmers with freshness. Occasional snow flurries add a tinge of winter's beauty without causing any significant disruption. Weather in January »Weather in February
The month of February follows suit with January's weather patterns but experiences a slight reduction in temperature, with the highs reaching 9.2°C (48.6°F). Characterized by its dreariness, February is a month with significantly less rainfall than the previous month. Weather in February »Weather in March
March displays a prominent transition from the breezy episodes of winter, with the maximum temperature rising increasingly to 9.8°C (49.6°F). The amount of rainfall also reduces, and there is no snowfall observed, paving the way for the advent of spring. Weather in March »Weather in April
April is an enormous shift towards the warmer side, with the temperature escalating up to a comfortable 11°C (51.8°F). It becomes one of the driest months when compared to the preceding months, which is a welcome change from the previous heavy rainfall patterns. Weather in April »Weather in May
May is the transition month towards summer with the temperature scaling up to 12.8°C (55°F). It is one of the wettest months with considerable rainfall observed. However, the long and sunny days allow residents and tourists to experience the city's mesmerizing warmth. Weather in May »Weather in June
Step into the summer month of June, where the temperature soars to reach highs of 15.2°C (59.4°F). June sees warmer days compared to the relatively cooler May. Rhododendron blooms are in full view, providing a colorful spectacle for residents and visitors alike. Weather in June »Weather in July
July, being the warmest month of the year, witnesses the maximum temperature climb to 16.9°C (62.4°F). Summer is in full swing, with longer days allowing residents to indulge in various outdoor activities. The beach scene becomes lively, with the sea displaying a placid demeanor due to the absence of windy conditions. Weather in July »Weather in August
The warm spell continues into August, with the peak temperature marking 17.8°C (64°F). Although warmer than July, it is less humid, providing a more comfortable environment for the inhabitants of Duval, Guernsey. With minimal rainfall and steady temperature, the weather presents an excellent opportunity for sunbathing and beach picnics. Weather in August »Weather in September
September signifies the onset of autumn, with the high temperature gently decreasing to 17.2°C (63°F). It continues to be warm but carries the crisp undertone typical of impending fall weather. Marked as a perfect blend of summer and autumn, it offers the residents a chance to enjoy the warm afternoons and cooler nights. Weather in September »Weather in October
As the city moves further into fall, the temperature in October drops to a cooler range, with a maximum of 15.5°C (59.9°F). October landscapes paint a bright color palette with an array of oranges, yellows, and reds. However, the city does face increased rainfall making the roads slippery and misty, demanding caution while driving. Weather in October »Weather in November
November brings along a chill as the maximum temperature dips further to 13°C (55.4°F). While the falling leaves add to the city's aesthetic appeal, rain is a frequent encounter during this month. The city turns into a blend of late autumn charm and early winter chills, making it fascinating for those who enjoy cold weather. Weather in November »Weather in December
December signifies winter's arrival; the temperature in Duval, Guernsey plunges further with an average high around 11.1°C (52°F). The cold month brings back the trend of snowfall which, though light, lends a serene white blanket to the city. 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 Duval, 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 Duval.
January is the month with the most snowfall. Snow falls for 0.3 days and accumulates 2mm (0.08") of snow.
In Duval, during the entire year, snow falls for 0.5 days and aggregates up to 2mm (0.08") of snow.
The months with the least sunshine in Duval, Guernsey, are January, November and December, with an average of 3.9h of sunshine.
In Duval, the lowest temperatures are generally noted in February, averaging a high of 9.2°C (48.6°F) and a low of 7°C (44.6°F).
In Duval, snow does not fall in February through December.
February is the month with the lowest UV index in Duval, with an average maximum UV index of 2.
The months with the highest humidity in Duval, Guernsey, are June and July, with an average relative humidity of 84%.
June has the longest days of the year in Duval, with an average of 16h and 12min of daylight.
July is the month with the least rainfall. Rain falls for 12.8 days and accumulates 26mm (1.02") of precipitation.
With an average of 9.7h of sunshine, July has the most sunshine of the year in Duval, Guernsey.
The months with the highest UV index are July through September, with an average maximum UV index of 5.
Duval witnesses the warmest weather in August, with temperatures averaging a high of 17.8°C (64°F) and a low of 15.8°C (60.4°F).
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.
The month with the most rainfall in Duval is November, when the rain falls for 22.8 days and typically aggregates up to 87mm (3.43") of precipitation.
The month with the shortest days in Duval is December, with an average of 8h and 18min of daylight.
Average temperature
Duval, 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
Duval, 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
Duval, 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
Duval, 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
Duval, Guernsey
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days
Duval, 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
Duval, 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
Duval, 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
Duval, Guernsey
- Average daylight in January:
8h and 42min - Average daylight in February:
10h and 12min - 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 18min
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 18min).
- 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
Duval, 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
Duval, 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
Duval, 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
Duval, 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).
