Last updated: August 21, 2025
Experience the charm of Port Erin, Isle of Man, in September, where the weather presents a delightful mix of mild temperatures and refreshing coastal breezes. With maximum temperatures reaching 19°C (67°F) and an average of 14°C (58°F), visitors can enjoy outdoor activities despite the occasional cool spell. However, anticipate some rain, as the region receives 91 mm (3.6 in) of precipitation over 14 days, creating a lush landscape. The humidity level hovers around 85%, contributing to the crisp, invigorating air that characterizes this picturesque seaside town. Perfect for those who seek a blend of adventure and tranquility, Port Erin in September offers a unique atmosphere that captivates all who visit.
In September, Port Erin, Isle of Man, experiences a pleasant transition from summer to autumn, showcasing a blend of warmth and crispness. The average temperature hovers around 14°C (58°F), with daytime highs reaching up to 19°C (67°F), making it one of the more inviting months of the year. As the month progresses, the temperatures reflect a subtle cool-down, with minimums around 10°C (51°F). This gentle decline signals the end of the balmy summer days, setting the stage for the cooler months ahead. The overall trend in September indicates a comfortable climate, ideal for enjoying the stunning coastal scenery while soaking in the last glimpses of summer.
September in Port Erin, Isle of Man, sees notable precipitation, with an average of 91 mm (3.6 in) of rainfall over 14 days. This marks a slight decrease from the wetter August, which experienced 94 mm (3.7 in) over 15 days. The trend of steadily increasing rainfall continues into the fall months, with October and November looming with significantly higher precipitation averages of 142 mm (5.6 in) and 143 mm (5.6 in) respectively. This gradual uptick underscores a typical transition from late summer dryness to autumn's showing of more sustained rain, highlighting the region's characteristic change in weather patterns as it nears winter.
As summer transitions into autumn, September in Port Erin, Isle of Man, offers a notable dip in temperature but a moderate humidity level of 85%. This marks a slight increase from the preceding months, which are characterized by a gradual decline in humidity from 89% in January to a low of 78% in July. Interestingly, the humidity begins to rise again in the latter part of summer, with figures nudging back up to 79% in August. As the seasons change, the humidity levels in September reflect the island's typical climatic patterns, hinting at the return of cooler, more damp conditions that will continue into the fall, evidenced by the looming 90% in October and 91% in November. This rhythm of humidity encapsulates the essence of Port Erin's transformation as it turns from the warmth of summer toward the cooler embrace of autumn.
As September rolls into Port Erin, Isle of Man, the UV Index sees a moderate level of 5, indicating a transition from the peak summer months. This drop from August's higher index reflects a shift in the sunlight and a decrease in sunburn risk, with an estimated burn time of 30 minutes for unprotected skin. Compared to the earlier summer months where values reached a striking 8, September offers a more tempered sun exposure experience. This moderate UV Index encourages residents and visitors alike to enjoy the outdoors while still being mindful of sun protection. For a detailed look at how Port Erin’s UV Index evolves throughout the year, be sure to check out Port Erin UV Index.
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September in Port Erin, Isle of Man, welcomes 314 hours of sunshine, reflecting a gentle decline as summer gives way to autumn. This month showcases the tail end of an impressive sunshine streak, where the warmer months of May through July shine brilliantly with over 400 hours of sunlight. While September's hours are noticeably lower than summer's peak, they still provide a welcome brightness before the shorter days of autumn set in. As the year progresses towards winter, the gradual dip in sunshine is palpable, with October's 244 hours signaling the transition to the cozy, less illuminated months ahead. Nonetheless, September remains a vibrant time, capturing the essence of early autumn in this beautiful coastal locale.
As September rolls into Port Erin, the likelihood of sunny weather dips to 24%, marking it as one of the cloudier months of the year. This trend continues a pattern seen from the summer months, where the chance of sunshine wanes after the peak of April at 52%. The warmer summer days of July and August, both hovering around 40%, give way to a decline, creating a noticeable shift in the weather. As autumn approaches, the sunlight becomes less inviting, with October and November following closely behind with just 22% sun. Thus, while September still holds a hint of summer's brightness, it's clear that clearer skies are becoming a rare commodity.
As summer transitions into autumn, September in Port Erin, Isle of Man, offers a delightful blend of warm days and lengthening evenings. The month showcases an average of 12 hours of daylight, a slight decline from the sun-drenched 16 hours in July and 14 hours in August. This reduction signifies the slow shift toward autumn, mirroring the gentle retreat of summer's vibrancy. As daylight wanes further in October to just 10 hours, the gradual embrace of shorter days becomes evident, yet September still holds onto a satisfying amount of sunlight, making it a perfect time for outdoor activities amidst the changing scenery.
In September, Port Erin, Isle of Man, experiences a gentle breeze with an average wind speed of 6.0 m/s (13 mph), marking a slight increase from the calmer summer months. This transitional period sees the winds gradually picking up, in contrast to the notably lower speeds recorded in July and August, which have been characterized by a serene atmosphere. As autumn approaches, the winds strengthen into October and November, where average speeds rise to 9.3 m/s (21 mph), emphasizing a shift towards more dynamic weather. September, therefore, serves as a delightful bridge, blending the tranquil summer winds with the invigorating gusts that define the autumn months ahead.
Weather in Port Erin varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Port Erin, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, September typically enjoys milder temperatures with a minimum of 10°C (51°F) and an average of 14°C (58°F), while January is cooler, with a minimum of 3°C (38°F) and an average of 8°C (46°F). Both months experience similar precipitation levels, with September slightly wetter at 91 mm (3.6 in) compared to January's 81 mm (3.2 in), and both have rainfall on about 14 days. Humidity is relatively high in both months, but slightly more so in January at 89%, compared to September's 85%. For more details on the weather during January, you can visit Port Erin weather in January.
September and February present quite different weather profiles. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 19°C (67°F), with an average of 14°C (58°F). The month sees about 91 mm (3.6 in) of precipitation spread over 14 days, accompanied by a relatively high humidity of 85%. In contrast, February experiences cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 12°C (54°F), averaging at 7°C (45°F). This month is slightly wetter, with 106 mm (4.2 in) of precipitation occurring over 18 days and humidity levels rising to 88%. For more detailed insights on February weather, you can refer to Port Erin weather in February.
September and March present quite contrasting weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a comfortable maximum of 19°C (67°F), with an average of 14°C (58°F) and relatively high humidity at 85%. The month experiences a moderate amount of rainfall, totaling 91 mm (3.6 in) over about 14 days. In contrast, March is cooler, with temperatures dipping to a minimum of -1°C (30°F) and averaging only 7°C (45°F), peaking at 11°C (52°F). Despite having slightly less precipitation at 87 mm (3.4 in) spread over 18 days, March's humidity remains high at 86%. For more detailed insights, check Port Erin weather in March.
When comparing the weather in September to that of April, September generally offers milder temperatures, with averages around 14°C (58°F) compared to April's cooler average of 8°C (47°F). The maximum temperatures in September reach up to 19°C (67°F), while April's peak only hits 13°C (56°F). September also experiences more precipitation, totaling 91 mm (3.6 in) over approximately 14 days, in contrast to April's 36 mm (1.4 in) over 8 days. Despite this, both months have similar humidity levels, with September at 85% and April slightly lower at 84%. For more details on April's specific weather conditions, you can check out Port Erin weather in April.
When comparing the weather in September to that of May, several notable differences emerge. September tends to be warmer, with minimum temperatures around 10°C (51°F) and average highs reaching up to 19°C (67°F). In contrast, May starts off cooler, with lows around 5°C (42°F) and a maximum of 16°C (60°F). Additionally, September experiences more precipitation, totaling 91 mm (3.6 in) over about 14 days, while May sees significantly less rain at 44 mm (1.7 in) over just 9 days. This contributes to a higher humidity level in September at 85%, compared to May's 79%. For a detailed look at the weather in May, you can check Port Erin weather in May.
When comparing the weather in September and June, September tends to be slightly warmer, with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 19°C (67°F). In contrast, June experiences slightly cooler temperatures, with averages from 9°C (49°F) to 17°C (64°F). Precipitation levels are also higher in September, amounting to 91 mm (3.6 in) over 14 days, compared to June’s 70 mm (2.8 in) over 11 days. Additionally, humidity is marginally higher in September at 85%, while June maintains a comfortable 81%. For more detailed weather insights, check Port Erin weather in June.
When comparing the weather in September and July, both months display similar average temperatures, hovering around 14°C (58°F). However, September typically experiences cooler minimum temperatures of 10°C (51°F), compared to July's 12°C (53°F). In terms of precipitation, September is slightly wetter, receiving 91 mm (3.6 in) over 14 days, whereas July has less rainfall at 70 mm (2.8 in) across 12 days. Additionally, September has a higher humidity level at 85%, compared to July's 78%, making September feel more damp and cool. For more detailed information about July weather, you can visit Port Erin weather in July.
In comparing the weather of September to that of August, we can see a subtle shift in conditions. September experiences slightly cooler temperatures, with a minimum of 10°C (51°F) and an average of 14°C (58°F), compared to August's minimum of 12°C (54°F) and average of 15°C (59°F). Additionally, September has a marginally higher precipitation level of 91 mm (3.6 in) over 14 days, while August totals 94 mm (3.7 in) across 15 days. The humidity in September is notably higher at 85%, compared to August's 79%, contributing to a more damp atmosphere as summer transitions into autumn. For a detailed look at August's weather, you can visit Port Erin weather in August.
September's weather offers a mild transition into autumn, with average temperatures ranging from 10°C (51°F) to a comfortable 19°C (67°F). However, it also brings considerable rainfall, totaling 91 mm (3.6 in) across 14 days, complemented by a humidity level of 85%.
In contrast, October experiences cooler conditions, with temperatures dropping to a minimum of 7°C (45°F) and peaking at 17°C (63°F). The month is wetter, recording 142 mm (5.6 in) of precipitation over 18 days and slightly higher humidity at 90%. For more details about October in this region, visit Port Erin weather in October.
In comparing the weather between September and November, we see a notable decline in temperatures as September boasts a minimum of 10°C (51°F) and averages around 14°C (58°F), while November's temperatures drop further to a minimum of 6°C (43°F) and an average of 10°C (51°F). Additionally, November experiences increased precipitation, with 143 mm (5.6 in) over 20 days, compared to September's 91 mm (3.6 in) across 14 days. The humidity also rises slightly from 85% in September to 91% in November, contributing to a more damp and chilly atmosphere. For more details, you can check Port Erin weather in November.
In September, the weather is relatively mild, with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 19°C (67°F). The month sees about 91 mm (3.6 in) of precipitation spread over 14 days, with humidity levels at 85%. In contrast, December brings cooler temperatures, with an average range from a minimum of 4°C (39°F) to a maximum of 13°C (56°F). Rainfall increases significantly in December to 144 mm (5.7 in) over 22 days, and humidity rises slightly to 89%. For more details on the weather during this month, you can check Port Erin weather in December.
As summer fades into autumn, September in Port Erin offers a transitional weather experience marked by cool breezes and lingering warmth. This month stands out with its refreshing average temperatures and increased humidity, compared to the drier, hotter summer months. Although rain shows up more frequently, with numerous wet days, the overall climate is still inviting for outdoor activities. For those planning a visit during this time, the unique blend of mild days and occasional showers creates a captivating atmosphere. To learn more about weather patterns throughout the year, visit Port Erin Climate.