Climate and monthly weather forecastSaint Andrew, Guernsey
Climate and monthly weather forecast
The climate of Saint Andrew
Situated in the heart of Guernsey, Saint Andrew occupies a prominent location, featuring a climate predominantly regarded as Cfb, otherwise known as a marine west coast, warm summer climate, according to the Köppen climate classification. Every passing season brings distinctive changes to the mercury level, rain patterns, and other meteorological factors.Throughout the year, the temperature oscillates between a low of 7°C (44.6°F) to a high of 17.8°C (64°F). Warm summers come with increased sunlight hours and cooler temperatures prevail in winters. Rainfall figures fluctuate from 26mm (1.02") in the summer months to an elevated amount of 87mm (3.43") in November. Around 80% of the time, the town is wrapped in relative humidity, fostering a fresh and moist environment.
Snowfall is a spectacle rarely witnessed in Saint Andrew with no substantial figures to report. On top of that, Saint Andrew's skies usually remain 40 to 62% cloudy. Breezy conditions are a staple feature in Saint Andrew with wind speeds ranging from 21.9km/h (13.6mph) to 36km/h (22.4mph), especially during winter.
The best time to visit Saint Andrew
Aiming for a comfortable encounter with the city's climate? Consider travelling between May and September, a period that showcases optimal meteorological conditions. In these months, temperatures hover between a delightful 12.8°C (55°F) and 17.8°C (64°F). Along with that, rainfall dips to its lowest levels for the year, ranging from 26mm (1.02") to 33mm (1.3"), rendering a visit to this city considerably more enjoyable. There is also more daylight, hitting the maximum of 16.2 hours in June and a robust amount of sunshine, which peaks at 9.7 hours in July.The worst time to visit Saint Andrew
Contrastingly, the weather takes a less welcoming turn from November to January. During this period, the moisture-content shoots up with the rainfall reaching a peak at 87mm (3.43"). Coupled with that, temperatures plunge to their annual lows, dropping to about 9.2°C (48.6°F), which can play spoilsport to outdoor activities. The town's usual breezy conditions also pick up momentum, with average wind speeds accelerating to 34 to 36km/h (22.4mph), and reaching gust levels of 47 to 50km/h (31.1mph).Spring weather in Saint Andrew
Spring greets Saint Andrew with a gradual rise in temperatures from 9.8°C (49.6°F) in March to 12.8°C (55°F) in May, kindling the thawing of the winter chill. Rainfall sees a considerable drop from 38mm (1.5") to 27mm (1.06"), and sun-filled days start emerging more frequently. This season marks the onset of plentiful daylight hours, stretching from 11.9 hours in March to 15.4 hours in May, complementing the serene spring atmosphere.Summer weather in Saint Andrew
From June to August, Saint Andrew experiences warm days with temperatures cresting between 15.2°C (59.4°F) and 17.8°C (64°F). Precipitation reaches a minimum in July, dropping to a sparse 26mm (1.02"). The humidity maintains steadiness near 84%, offering a comfortably moist atmosphere. Making the season even more appealing, daylight hours peak at 16.2 hours in June.Autumn weather in Saint Andrew
Autumn presents itself with cooling temperatures ranging between 17.2°C (63°F) and 13°C (55.4°F) from September to November, alongside a rise in precipitation, peaking at 87mm (3.43") in November. The moisture in the air gradually increases, causing the relative humidity to vary between 79 and 80%. Daylight hours start to lessen, going from 12.6 hours in September to a brief 9.1 hours in November.Winter weather in Saint Andrew
The winter months from December to February bring an air of chill to Saint Andrew with temperatures bordering the lower scale, between 7°C (44.6°F) and 9.8°C (49.6°F). Precipitation is considerable with rainfall reaching 70mm (2.76") in December. During this season, the relative humidity percentage rest above 77%, and the days become shorter with daylight hours dropping down to 8.3 hours in December.Weather in January
January in Saint Andrew, Guernsey, is characterized by chilly temperatures and frequent rainfall. As the year begins, residents brace for the typically cooler days with the mercury reading between 7.8°C (46°F) and 9.8°C (49.6°F). Weather in January »Weather in February
Moves to February show a pattern of cooler temperatures, similar to January, with slightly less rainfall. The humidity remains relatively unchanged, indicating a consistency in the weather characteristics. With temperatures oscillating from 7°C (44.6°F) to 9.2°C (48.6°F), February weather showcases mild yet windy days across Saint Andrew, Guernsey. Weather in February »Weather in March
March indicates the start of springtime in Saint Andrew, Guernsey, as temperatures rise slightly, and the city receives more hours of sunshine. The relatively stable weather prevails, with temperatures moving from 7.4°C (45.3°F) to 9.8°C (49.6°F), yet the city experiences a notable drop in rainfall. Weather in March »Weather in April
April shows significant improvement, with increasing sunshine hours and temperatures registering between 8.9°C (48°F) and 11°C (51.8°F). Saint Andrew, Guernsey, continues to enjoy its spring season during April. Despite the stable pressure, the wind speed declines notably, providing a more relaxed atmosphere throughout the month. Weather in April »Weather in May
May marks a considerable shift in Saint Andrew, Guernsey's weather, signaling the onset of warmer temperatures. Temperatures range from 10.6°C (51.1°F) and 12.8°C (55°F) in May, bringing relatively warmer days. However, visibility remains consistent with the previous months, enhancing the clarity of the charming landscapes. Weather in May »Weather in June
June ushers in the summer months in Saint Andrew, Guernsey, characterized by warmer temperatures and increased sunshine hours. Seeing a rise in temperature from 13.2°C (55.8°F) to 15.2°C (59.4°F) and maintaining consistent visibility, it provides the perfect environment for outdoor activities. Weather in June »Weather in July
July presents as the warmest month in Saint Andrew, Guernsey, with elevated temperatures and long daylight hours. Temperatures push up to range between 15.3°C (59.5°F) and 16.9°C (62.4°F) in July, making it the hottest month of the year. Weather in July »Weather in August
August doesn't reveal any significant changes compared to July; however, it does showcase a slight increase in the upper limit of the temperature spectrum from 15.8°C (60.4°F) to 17.8°C (64°F). Despite bearing the summer tag, Saint Andrew witnesses a surge in rainfall during August. Weather in August »Weather in September
September marks the gradual transition from summer to autumn in Saint Andrew, Guernsey. Although the temperatures stay quite warm, ranging from 15.4°C (59.7°F) to 17.2°C (63°F), an increase in rainfall is observed. Quite oppositely to August, cloud coverage decreases, making the city bask under the sunlit sky. Weather in September »Weather in October
By October, Saint Andrew, Guernsey, fully embraces the autumn season with diminishing temperatures and increased rainfall. The mercury dips to range between 13.6°C (56.5°F) and 15.5°C (59.9°F) in October, bringing in the cool autumn breeze. Weather in October »Weather in November
As November arrives, Saint Andrew, Guernsey, witnesses further drops in temperature, increased rainfall, and less sunshine, signaling the approach of winter's chill. November weather sees the temperature drop from 10.9°C (51.6°F) to 13°C (55.4°F) in addition to the highest rainfall of the year at 87mm (3.43"). Weather in November »Weather in December
December in Saint Andrew, Guernsey, is full-bore winter with low temperatures, shorter days, and scarce sunshine. Temperatures in this month range from 9.2°C (48.6°F) to 11.1°C (52°F), making it the coolest month of the year. 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
Throughout the year, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.
January is the only month when snow falls in Saint Andrew.
The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 2mm (0.08") of snow.
In Saint Andrew, 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.
In Saint Andrew, February registers the lowest temperatures, averaging 9.2°C (48.6°F) at the peak and 7°C (44.6°F) at the lowest.
In Saint Andrew, Guernsey, snow does not fall in February through December.
The month with the lowest UV index in Saint Andrew is February, with an average maximum UV index of 2.
June and July, with an average relative humidity of 84%, are most humid months.
June has the longest days of the year in Saint Andrew, Guernsey, with an average of 16h and 12min of daylight.
The month with the least rainfall in Saint Andrew is July, when the rain falls for 12.8 days and typically collects 26mm (1.02") of precipitation.
With an average of 9.7h of sunshine, July has the most sunshine of the year.
The months with the highest UV index are July through September, with an average maximum UV index of 5.
August registers as the month with the average highest temperatures, reaching 17.8°C (64°F) at its peak and 15.8°C (60.4°F) at the lowest.
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Saint Andrew, 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 in Saint Andrew, Guernsey. Rain falls for 22.8 days and accumulates 87mm (3.43") of precipitation.
The month with the shortest days is December, with an average of 8h and 12min of daylight.
Average temperature
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, Guernsey
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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 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
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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
Saint Andrew, 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).
