Last updated: January 18, 2025
Saint Andrew, Guernsey, exhibits a Cfb Koppen-Geiger climate, characterized by a temperate maritime climate. The region experiences a minimum temperature of 0°C (32°F) in March, climbing to an average of 13°C (55°F) throughout the year. The peak temperatures reach 22°C (72°F) during August, highlighting the pleasant summer warmth. This climatic profile not only influences local biodiversity but also shapes the lifestyle of residents, making Saint Andrew a unique environment shaped by its distinctive weather patterns.
In Saint Andrew, Guernsey, temperature patterns reveal distinct seasonal trends. The year begins with colder temperatures in January and February, featuring minimums around 0°C (32°F) to 3°C (37°F) and average highs hovering around 9°C (49°F). As spring approaches, temperatures gradually rise, with April marking the transition to milder conditions, reflected in average maximums of 15°C (59°F). The warmth continues into summer, peaking in July and August, when temperatures reach maxima of 21°C (70°F) and 22°C (72°F), alongside comfortable average temperatures of 16°C (62°F) and 17°C (63°F). As autumn sets in, temperatures begin to cool again, with September maintaining pleasant averages before dropping further in October and November, which see average highs around 15°C (59°F) and 12°C (54°F) respectively. By December, the cycle returns to cooler temperatures, wrapping up the year with maximums of 14°C (58°F).
Saint Andrew experiences a diverse range of temperatures throughout the year, with a minimum average of 0°C (32°F) in March and a maximum of 22°C (72°F) in August. For more detailed information on the monthly temperatures in Saint Andrew, you can visit the following link: monthly temperatures in Saint Andrew.
Saint Andrew, Guernsey experiences notable seasonal variations in precipitation, with the winter months seeing the highest levels of rainfall. January begins the year with a substantial 94 mm (3.7 in) of rain over approximately 14 days, followed closely by February at 86 mm (3.4 in) across 16 days. As spring unfolds, March sees a decline to 73 mm (2.9 in), while April dramatically drops to just 34 mm (1.3 in), indicating a relative respite from the winter deluge. Precipitation remains moderate in May and June, with 55 mm (2.2 in) and 59 mm (2.3 in) respectively, showing a gradual transition towards the drier summer months.
However, summer offers little reprieve, as by October, the precipitation dramatically increases again, reaching 144 mm (5.7 in) over 17 days, while November follows closely with 126 mm (5.0 in) across 18 days. December peaks with the highest annual total of 163 mm (6.4 in) over 21 days, underscoring the wet winter pattern characteristic of the region. The overall precipitation pattern in Saint Andrew thus showcases a clear cycle, where the driest months occur in late spring and early summer, contrasted sharply by the rainy spell that envelops the winter and early autumn.
In Saint Andrew, Guernsey, sunshine duration showcases a clear seasonal progression, starting from the dim winter months and culminating in the bright summer days. January records just 107 hours of sunshine, gradually increasing in February to 163 hours. This upward trend accelerates with the arrival of spring, as March sees a jump to 238 hours, and April basks in the warmth of 359 hours. The sunshine hours continue to rise through May and June, where the days become significantly longer, peaking in July at an impressive 436 hours. This highlights July as the sunniest month of the year, offering residents and visitors ample opportunities to enjoy the outdoors.
As summer transitions into autumn, the sunshine hours begin to taper off, with August still enjoying a respectable 396 hours, before falling to 338 hours in September. This decline persists into October, where only 270 hours of sunshine are recorded, leading into the shorter days of winter. November and December witness the least amount of sunlight, with only 181 hours and 130 hours, respectively. This seasonal ebb and flow illustrates how the sun's presence profoundly influences daily life in Saint Andrew, shaping the outdoor activities and overall mood of its inhabitants throughout the year.
In Saint Andrew, Guernsey, the UV Index reflects significant seasonal fluctuations that impact sun safety throughout the year. During the winter months, the UV Index remains relatively low, starting at 2 in January and 2 in November, with minimal risk of harm from unprotected sun exposure. As spring approaches, February and March see moderate UV levels of 3 and 4, prompting awareness but still allowing outdoor enjoyment with limited precautions. However, April ushers in a notable increase, with the UV Index rising to 6, marking the beginning of the high exposure category, alongside a reduced burn time of 25 minutes for unprotected skin.
Summer months present the highest UV Index levels in the region, reaching a peak of 9 in June and 8 in July, classified as "very high," which necessitates careful sun protection due to the sharp decline in burn time to just 15 minutes. August sees a slight decrease back to 7, but it remains in the high risk category, followed by September and October where the UV Index drops to 6 and 4 respectively. As the year wraps up, December's UV Index falls to a minimal 1, emphasizing the importance of adapting sun safety practices as environmental conditions change. The varying UV levels throughout the year highlight the need for residents and visitors to stay informed and protective during peak sunshine months.
UV Risk Categories
In Saint Andrew, Guernsey, daylight duration varies significantly throughout the year, mirroring the changing seasons and influencing daily activities. January and December usher in the year with only 8 hours of daylight, casting long shadows and encouraging indoor pursuits. As spring approaches, daylight gradually increases, reaching 10 hours in February and 11 hours in March. By April, the days extend to 13 hours, and spring blooms into summer with May's 15 hours of daylight, enhancing opportunities for outdoor activities and social gatherings.
The pinnacle of daylight occurs in June, when the area enjoys a maximum of 16 hours of sunlight, creating a vibrant atmosphere perfect for summer events. As summer wanes, daylight hours begin to taper off, dropping to 15 hours in July and continuing down to 14 hours in August. The descent continues into autumn, with 12 hours in September and further reducing to 10 hours in October. November then sees a decline to 9 hours, echoing the returning darkness of winter. This cyclical pattern of daylight duration emphasizes the contrast between vibrant summers and the more subdued, cozy ambiance of winter months in Saint Andrew.
Saint Andrew, Guernsey experiences a mild maritime climate with average temperatures ranging from 3°C (37°F) in January to 22°C (72°F) in August. The area receives the most rainfall in October and December, accumulating 144 mm (5.7 in) and 163 mm (6.4 in), respectively, while the driest month is April with only 34 mm (1.3 in). Sunshine hours peak in July with 436 hours, contributing to the overall pleasant summer conditions. For a detailed overview, visit the Saint Andrew climate page.
In conclusion, the climate of Saint Andrew, Guernsey, characterized by its temperate maritime conditions, showcases diverse patterns in temperature, precipitation, sunshine duration, UV Index, and daylight hours throughout the year. The seasonal shifts reveal a rich tapestry of weather influences, with cold winters and mild summers fostering a unique environment that shapes the lifestyles and activities of its residents. Understanding these climatic dynamics is essential for both locals and visitors, as they navigate sun safety during the peak UV months and maximize outdoor enjoyment during the sunniest periods. Overall, the climate of Saint Andrew is not just a backdrop but an integral part of the community's identity, offering both challenges and opportunities that enrich life on this picturesque island.