Last updated: January 18, 2025
Port St Mary, located on the picturesque Isle of Man, exhibits a Cfb climate classification under the Köppen-Geiger system, characterized by moderate temperatures and consistent precipitation throughout the year. The region experiences a minimum temperature of -1°C (30°F) in March, reflecting the coolness of early spring. On average, the temperature hovers around 11°C (52°F), providing a mild coastal climate. The warmest month, July, sees maximum temperatures reaching 19°C (67°F), offering residents and visitors alike a pleasant summer atmosphere. This climate fosters a unique ecosystem and influences local activities, contributing to the charm of Port St Mary.
In Port St Mary, Isle of Man, temperature patterns exhibit distinct seasonal trends throughout the year. Winter months, particularly January and February, feature cooler temperatures, with minimums dropping to 1°C (34°F) in February, while average temperatures remain around 7°C (45°F). As spring approaches, March experiences a notable cool dip with a minimum of -1°C (30°F), gradually warming to moderate averages of 8°C (47°F) in April. The transition to summer brings a significant rise, with July highlighting the warmest conditions, where maximum temperatures peak at 19°C (67°F) and averages settle at 14°C (58°F). Although August maintains similar warmth, temperatures begin to cool again by autumn, as September sees averages decline to 14°C (58°F). Overall, Port St Mary's climate is marked by its mild spring and summer weather, punctuated by cooler winters, creating a pleasant maritime environment year-round.
Port Saint Mary experiences a temperature range that highlights its temperate climate, with a minimum of -1°C (30°F) in March and a maximum of 19°C (67°F) in July. This variation can be observed more closely in the monthly temperatures in Port Saint Mary, showcasing the island's mild summers and chilly early spring.
Precipitation in Port St Mary, Isle of Man, displays a noteworthy variation throughout the year, heavily influenced by seasonal changes. The wettest months are typically found in late autumn and winter, with October and November recording the highest rainfall at 142 mm (5.6 in) and 143 mm (5.6 in) respectively, while also experiencing around 18 to 20 rainy days each month. In contrast, April marks a significant decrease in precipitation, receiving only 36 mm (1.4 in), indicative of the transition towards drier spring weather. The pattern of rainfall in early spring remains moderate, with March seeing 87 mm (3.4 in), setting the stage for the milder, albeit still damp, conditions of late spring and summer.
As the summer months approach, precipitation levels stabilize, with June and July both observing 70 mm (2.8 in) of rainfall, while maintaining daily averages of around 11 to 12 days of rain. However, August experiences a slight increase in precipitation to 94 mm (3.7 in), suggesting the onset of autumn showers. The overall trend of precipitation reflects the maritime climate of Port St Mary, where rainfall is prevalent year-round, with particularly heavy downpours in the autumn and winter months, contributing to the lush green landscapes characteristic of the Isle of Man.
In Port St Mary, Isle of Man, sunshine duration demonstrates a marked seasonal trend, with a steady increase from winter months to the peak of summer. January records the least sunshine at just 90 hours, which gradually ascends as spring unfolds; February and March see significant gains, reaching 161 and 233 hours, respectively. As spring progresses into April, sunshine hours surge to 341 hours, creating a vibrant atmosphere that heralds the arrival of longer days. The month of May witnesses an impressive leap, peaking at 418 hours, followed closely by June and July, which maintain similar sunlight levels, providing ample opportunities for outdoor activities in a picturesque coastal setting.
As summer transitions into autumn, sunshine hours begin to decline, with August still offering a respectable 376 hours, but followed by a noticeable decrease in September, dropping to 314 hours. The trend continues into October, which sees a further reduction, with sunshine hours decreasing to 244. This pattern of diminishing light persists through the fall into winter months, with November and December providing only 131 and 104 hours, respectively. This seasonal ebb and flow of sunshine shaped by the Isle of Man's maritime climate not only impacts the local ecosystem but also influences the lifestyle and activities of its residents throughout the year.
The UV Index in Port St Mary, Isle of Man, exhibits a clear seasonal progression, reflecting the changing intensity of sunlight throughout the year. During the winter months, the UV Index remains low, with values of 1 in January and 2 in February, indicating minimal risk of harm from unprotected sun exposure and allowing for a burn time of 45 minutes. As spring approaches, the index begins to rise, hitting 3 in March and gradually increasing to 5 by April. These months mark a transition into a moderate exposure category where sun protection becomes advisably cautious, particularly as people spend more time outdoors.
The summer months show a dramatic escalation in the UV Index, peaking at 8 in both June and July, categorized as "very high," which greatly reduces burning time to just 15 minutes. This heightened risk underscores the necessity for sun protection during these vibrant, sun-filled days. While August witnesses a slight decrease to a UV Index of 7, it still qualifies as high exposure, with burn times returning to 25 minutes. As autumn sets in, the UV Index descends back to moderate levels in September and October, then tapers off to low levels by November and December, restoring ample time for safe outdoor enjoyment as daylight wanes.
UV Risk Categories
Daylight duration in Port St Mary, Isle of Man, reflects a distinct seasonal pattern, transitioning from short winter days to long summer evenings. In January, residents experience just 8 hours of daylight, which gradually increases to 9 hours in February and reaches 11 hours by March, signaling the approach of spring. The trend continues upward through April, when daylight extends to 14 hours, and further to a peak of 16 hours in May. June marks the height of summer with an impressive 17 hours of daylight, providing ample opportunity for outdoor activities and enjoyment of the natural surroundings.
As the summer wanes, daylight begins to decline, with July still offering 16 hours, but once August arrives, the hours drop to 14. This decrease continues in September to 12 hours, indicating the onset of autumn. By October, daylight reduces further to 10 hours, and the pattern continues into the depths of winter, with November seeing 8 hours and December recording the shortest days at just 7 hours. This cyclical fluctuation in daylight duration profoundly impacts the lifestyle and daily activities of the inhabitants of Port St Mary, while also shaping the region's seasonal character.
Port Saint Mary, Isle of Man experiences a temperate maritime climate, characterized by mild temperatures and considerable rainfall throughout the year. Average temperatures range from a minimum of 1°C (34°F) in February to a maximum of 19°C (67°F) in July, with January being the coldest month. The region sees significant precipitation, particularly in the fall and winter months, with October through December averaging over 140 mm (5.5 in) of rain. Sunshine hours peak in late spring and summer, providing around 418 hours in May and July. For more detailed information, visit Port Saint Mary climate.
In conclusion, the climate of Port St Mary, Isle of Man, encapsulates the dynamic interplay of temperature, precipitation, sunshine duration, UV Index, and daylight duration throughout the year. The region's Cfb climate fosters mild temperatures, particularly during the spring and summer months, while also presenting a maritime environment characterized by consistent precipitation and lush landscapes. Seasonal variations highlight notable trends in sunshine and UV exposure, with an increased intensity as summer approaches, demanding awareness for sun protection. As daylight hours fluctuate across the year, the local community and visitors alike adapt their activities to embrace the vibrant summer months and navigate the shorter winter days. This unique climatic tapestry not only shapes the natural beauty of Port St Mary but also enriches the experiences of those who call it home or visit this enchanting Isle.