Last updated: August 21, 2025
In October, Castletown on the Isle of Man experiences a temperate climate, with a maximum temperature reaching 17°C (63°F) and an average of 13°C (55°F), while not dipping below 7°C (45°F). The weather is characterized by a notable precipitation total of 142 mm (5.6 in), spread over 18 days, underscoring the month’s moisture-laden atmosphere. Coupled with a high humidity level of 90%, October presents a rich tapestry of cool, wet days ideal for cozy indoor activities and appreciating the stunning autumnal scenery.
In October, Castletown on the Isle of Man welcomes a shift toward cooler temperatures as autumn deepens. The month sees minimums around 7°C (45°F), starting to edge up from the slightly chillier days of September. With an average temperature of 13°C (55°F) and maximums reaching 17°C (63°F), the weather provides a mild backdrop for autumn activities. This marks a notable transition from the warmth of summer, yet it remains comfortable for exploring the charming landscapes and coastal views. As October progresses, the temperatures gently decline, paving the way for a cozy, crisp November.
October stands out as a notably wet month in Castletown, Isle of Man, with a significant precipitation total of 142 mm (5.6 in), marking one of the highest figures of the year. Rain graces the region on 18 days, reflecting the onset of more persistent autumn showers. This surge in rainfall contrasts sharply with the drier months preceding it, like April and May, which see much lower totals of 36 mm (1.4 in) and 44 mm (1.7 in), respectively. As October rolls in, it paves the way for a typically wetter late autumn, with November and December following closely behind with similar precipitation levels. This pattern of increasing rainfall is crucial for the local ecosystem, replenishing water sources before the winter months.
In October, Castletown experiences a notable rise in humidity, peaking at 90%. This increase follows a pattern seen throughout the late summer and autumn months, as humidity levels gradually ascend from 78% in July to 85% in September. The transition into October marks a significant shift, with conditions becoming more humid as the year draws to a close. This uptick continues into November, where humidity reaches 91%. Interestingly, despite experiencing the driest month in May at 79%, the overall trend reflects a consistent reversion to more saturated air during the fall months, highlighting the Isle of Man's unique coastal climate.
As October rolls into Castletown, the UV Index settles at a moderate level of 3, signaling a shift in the sun's intensity as we move deeper into autumn. This month's burn time is approximately 30 minutes, encouraging residents and visitors alike to enjoy the crisp outdoor air while being mindful of sun exposure. Following a summer peak with indices reaching 8, which later dropped in September, October’s UV levels mark a gradual decline towards winter's low UV ratings. This trend serves as a reminder that while the sun may not be as fierce, it's still wise to take precautions. For more detailed information, check out the Castletown UV Index for insights into how to best protect yourself throughout the seasons.
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As autumn descends on Castletown, Isle of Man, October brings a delightful transition, where 244 hours of sunshine graces the month. While this may seem a dip from the fragrant warmth of summer, it reflects a consistent trend in the region's annual cycle. October shines brighter than the depths of winter, providing more sunlight than November's meager 131 hours and December's 104 hours. This offers locals and visitors alike a chance to bask in the lingering warmth before the winter chill sets in. Embracing October's softer sunlight is a reminder of the vibrant autumnal beauty that envelops Castletown, making it a picturesque time to explore the town’s rich history and stunning coastal views.
In October, Castletown on the Isle of Man experiences a modest 22% chance of sunny weather, which reflects a downward trend in sunlit days as the year progresses. After a peak of 52% in April, the likelihood of sunshine gradually diminishes, reaching lower figures through the autumn months. Comparatively, the chances of sunny days are slightly less than in September (24%) and quite similar to the gloomy conditions often associated with the late fall, as seen in November and December (both at 22% and 21%, respectively). This pattern suggests that while October may not be the sunniest month, it still holds the charm of early autumn, with the possibility of those rare sunny interludes adding to the season’s allure.
As autumn deepens in Castletown, Isle of Man, the daylight hours shift noticeably from the sun-soaked days of summer. In October, daylight dwindles to approximately 10 hours, a gentle decrease that follows the peak of 17 hours in June. This gradual decline is part of a broader seasonal trend, where longer days in spring and summer slowly give way to shorter days as winter approaches. By the end of October, the dwindling light serves as a reminder of the cyclic nature of the seasons, especially when contrasted with the longer hours enjoyed in May and June. As the month progresses, residents can embrace the cozy evenings and the rich tapestry of autumn, even as daylight slips away.
As October sweeps over Castletown, Isle of Man, the wind begins to pick up, bringing with it an invigorating average speed of 9.3 m/s (21 mph). This noticeable increase signifies a shift from the calmer summer months, where July recorded the lowest average of 4.3 m/s (10 mph). The autumn chill sets in, nudging the winds back to more robust levels, mirroring the conditions seen in November, which also boasts the same spirited 9.3 m/s (21 mph). Interestingly, while March and January demonstrate similar wind patterns with 8.5 m/s (19 mph), October's crisp breezes hint at the impending winter, teasing the islanders with the promise of change. As the leaves flutter and the air grows brisk, October clearly establishes itself as a month where the wind once again commands attention.
Weather in Castletown varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Castletown, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between October and January, October boasts a milder temperature range, with average highs reaching 17°C (63°F) compared to January's peak of 13°C (56°F). While both months experience significant humidity, October slightly edges out with an average of 90% compared to January's 89%. Additionally, October is notably wetter, receiving 142 mm (5.6 in) of precipitation over 18 days, while January sees less rainfall at 81 mm (3.2 in) over 14 days. For more detailed weather information, you can visit Castletown weather in January.
October and February present notably different weather patterns. October enjoys a milder average temperature of 13°C (55°F), with maximums reaching up to 17°C (63°F), while February is chillier, averaging only 7°C (45°F) and peaking at 12°C (54°F). Both months experience similar humidity levels, around 90% for October and slightly lower at 88% for February. Precipitation is also a common feature, with October receiving an average of 142 mm (5.6 in) over 18 days, compared to February's 106 mm (4.2 in) on the same number of days. For more specific weather details in February, you can check Castletown weather in February.
When comparing the weather in October and March, a notable difference is apparent in temperature and humidity. October generally enjoys milder conditions, with average temperatures ranging from 7°C (45°F) to a maximum of 17°C (63°F), while March is colder, featuring temperatures between -1°C (30°F) and 11°C (52°F). Both months experience similar rainfall, with October receiving more precipitation at 142 mm (5.6 in) compared to March's 87 mm (3.4 in), yet both see rain on about 18 days. Humidity levels are slightly higher in October at 90%, while March maintains a humidity of 86%. For further details on March weather, you can visit Castletown weather in March.
When comparing the weather in October to that of April, it becomes evident that October is generally cooler and wetter. October features temperatures ranging from a minimum of 7°C (45°F) to a maximum of 17°C (63°F), with an average of 13°C (55°F). Additionally, it sees significantly higher precipitation at 142 mm (5.6 in) over 18 days, and humidity levels are quite high at 90%. In contrast, April has milder temperatures, with a minimum of 3°C (38°F) and a maximum of 13°C (56°F), averaging 8°C (47°F). Precipitation is also much lower in April at 36 mm (1.4 in) occurring over just 8 days, and humidity levels are slightly lower at 84%. For more detailed information about April weather, you can check Castletown weather in April.
When comparing the weather in October to that of May, we can see some notable differences. October experiences a slightly higher temperature range, with average temperatures reaching around 13°C (55°F) compared to May's 10°C (51°F). However, October is significantly wetter, with an average precipitation of 142 mm (5.6 in) over 18 days, while May has only 44 mm (1.7 in) of rain across 9 days. Additionally, October's humidity is much higher at 90%, compared to May's 79%, which can make October feel chillier despite its higher temperatures. For a more detailed look at May's weather, you can check Castletown weather in May.
When comparing the weather in October and June, we observe both similarities and differences. October sees a slight temperature range, with minimums around 7°C (45°F) and maximums reaching 17°C (63°F), while June has a slightly higher minimum at 9°C (49°F) and the same maximum of 17°C (64°F). Precipitation in October is significantly higher at 142 mm (5.6 in) over 18 days, compared to only 70 mm (2.8 in) over 11 days in June. Additionally, humidity levels are higher in October at 90%, compared to June’s 81%. Overall, while both months share an average temperature of 13°C (55°F), October tends to be wetter and more humid than June. For more detailed information, check out Castletown weather in June.
When comparing the weather in October and July, a distinct shift can be observed. October experiences cooler temperatures, with a minimum of 7°C (45°F) and an average of 13°C (55°F), while July boasts milder conditions, starting at a minimum of 12°C (53°F) and averaging around 14°C (58°F). Precipitation levels also differ significantly; October sees higher rainfall at 142 mm (5.6 in) across 18 days, compared to July's 70 mm (2.8 in) over 12 days. Additionally, October has a higher humidity level of 90%, making it feel more damp than the relatively comfortable 78% humidity of July. For more detailed insights, you can visit Castletown weather in July.
In comparing the weather patterns of October and August, October tends to be cooler and wetter. With minimum temperatures dropping to 7°C (45°F) and average highs reaching 17°C (63°F), it stands in contrast to August, where temperatures range from a minimum of 12°C (54°F) to a maximum of 18°C (65°F). Additionally, October experiences significantly higher precipitation, averaging 142 mm (5.6 in) over 18 days, compared to August's 94 mm (3.7 in) over 15 days. The humidity also rises noticeably in October, reaching 90% versus August's 79%. For a more detailed look at August weather, you can check Castletown weather in August.
October weather is generally cooler and wetter compared to September. With minimum temperatures dipping to 7°C (45°F) and maximums reaching 17°C (63°F), October averages a slightly lower temperature of 13°C (55°F) compared to September's average of 14°C (58°F). Additionally, October experiences significantly more precipitation, measuring 142 mm (5.6 in) over 18 days, while September sees only 91 mm (3.6 in) over 14 days. Humidity also rises in October to 90%, up from September's 85%. For more details, you can check Castletown weather in September.
October and November both feature cool temperatures, but November tends to be slightly chillier, with average highs of 14°C compared to October's 17°C. The minimum temperatures in both months are fairly similar, with October having a minimum of 7°C and November dropping slightly to 6°C. Precipitation levels are quite comparable, with October receiving 142 mm over 18 days and November slightly edging it out with 143 mm across 20 days. The humidity remains high in both months, at 90% in October and rising slightly to 91% in November. For more detailed insights on November weather, you can check Castletown weather in November.
In October, the weather typically features a mild temperature range with a minimum of 7°C (45°F) and a maximum of 17°C (63°F), averaging around 13°C (55°F). This month also experiences significant rainfall, totaling 142 mm (5.6 in) over 18 days, accompanied by high humidity levels at 90%. In contrast, December sees slightly cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 13°C (56°F), averaging 9°C (48°F). The precipitation increases slightly to 144 mm (5.7 in) over 22 days, maintaining a similar humidity level of 89%. For more detailed insights into the winter climate, you can check Castletown weather in December.
As October unfolds in Castletown, the weather takes on a distinct character, marked by a notable increase in humidity and precipitation, setting it apart from the preceding months. With temperatures ranging from a brisk minimum of 7°C to a maximum of 17°C, the atmosphere becomes cooler and more damp, providing a contrast to the lingering warmth of late summer. Rainfall is more frequent, with nearly two-thirds of the month experiencing precipitation, making this a time for cozy indoor activities. The lush landscapes come alive, inviting both locals and visitors to embrace the beauty of the season. For a deeper dive into what to expect from Castletown's weather throughout the year, check out Castletown Climate.