Last updated: March 17, 2025
In Douglas, Ireland, September offers a mild climate characterized by a maximum temperature of 21°C (70°F), an average of 14°C (58°F), and dipping to a minimum of 7°C (45°F). This month sees about 74 mm (2.9 in) of precipitation over 13 days, contributing to the region's lush greenery. With humidity levels hovering around 85%, the air feels refreshingly cool, making it an ideal time for exploring the scenic beauty of this charming locale. Whether you're wandering through its picturesque streets or enjoying the vibrant local culture, September in Douglas is a delightful experience for any visitor.
In September, Douglas, Ireland experiences a gentle transition into autumn, marked by mild temperatures that create a pleasantly inviting atmosphere. The average temperature settles around 14°C (58°F), with daytime highs reaching up to 21°C (70°F)—ideal for outdoor adventures. The evenings become a touch cooler, dipping to a minimum of 7°C (45°F), hinting at the approaching chill of fall. This month stands out as a bridge between the warmer summer months of July and August, which see similar higher averages, and the cool embrace of October, where temperatures begin to drop more significantly. Overall, September's climate is characterized by a comfortable warmth, perfect for enjoying the scenic beauty of this charming Irish locale.
September in Douglas, Ireland, witnesses a moderate precipitation level, with 74 mm (2.9 in) of rain recorded over 13 days. This marks a slight dip from the wetter months of August, which saw 88 mm, yet it remains consistent with the overall trend of autumn, where rainfall begins to pick up again. The transition from summer to fall is evident as September's precipitation averages lower than the preceding months but hints at the impending increase typical in October and beyond, which often brings more substantial rainfall. The pleasant balance of wet and dry days during this month creates an inviting backdrop for those enjoying early autumn activities.
In Douglas, Ireland, September marks a notable consistency in humidity levels, maintaining a comfortable 85%. This aligns closely with the preceding summer months, where humidity also hovered at 85% in both July and August. As the year progresses towards autumn, the humidity gradually creeps up, peaking in October at 86%, suggesting an increase in moisture as the seasons shift. Overall, the humidity levels throughout the year reveal a slight fluctuation, predominantly hovering in the mid-80s, fostering a damp yet pleasant climate characteristic of this coastal locale.
September in Douglas, Ireland, marks a notable shift in the UV Index as the summer months wane. With a moderate UV Index of 5, residents and visitors should be mindful of sun exposure, especially as the recommended burn time decreases to 30 minutes. This trend follows a peak in July and August, where the index reached a striking 8, falling to 7 in August. As the days grow shorter and the sunlight mellows, September still offers plenty of amber warmth, reminding us to stay protected while enjoying the outdoors. For further insights into the UV Index throughout the year, visit Douglas UV Index.
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In September, Douglas, Ireland, enjoys a delightful transition from the summer months, basking in 305 hours of sunshine. This welcoming glow follows an impressive peak in July, which recorded 407 hours, setting the tone for the abundant light that summer brings. As the days begin to shorten, September still manages to hold onto a significant amount of brightness, outshining the earlier months of the year, where sunshine hours lingered below 400. With the warmth of summer fading slowly into autumn, this month serves as a gentle reminder of the vibrant seasons in Douglas, allowing residents and visitors alike to savor the lingering rays before the cooler months retreat with their own charm.
As summer fades into fall, the likelihood of sunny weather in Douglas, Ireland, takes a noticeable dip in September, with only a 21% chance of sunshine. This marks a contrast to the more vibrant months of April, where the sun shines 47% of the time, and even the late summer months of July and August, which offer a healthier 31% and 30% respectively. As the crisp autumn air settles in, the possibility of clear skies diminishes further, reflecting a broader trend of decreasing sunshine as the year progresses. September serves as a gentle reminder that the sunny days of summer are giving way to the cooler, cloudier months ahead.
As summer fades into autumn, September in Douglas, Ireland, offers a gentle transition with approximately 12 hours of daylight. This month captures the tail end of the long, sun-filled days experienced in June and July, which are at their peak with 16 hours of daylight. Following the vibrant 15 hours of May and the gradual tapering seen in August, September presents a slight dip, yet still showcases more light than the coming months of October and November, where daylight dwindles to 10 and 8 hours respectively. This gradual decline in sunlight not only marks the onset of cooler temperatures but also invites a change in the natural landscape, as nature readies itself for the winter ahead.
As autumn unfurls its colors in Douglas, Ireland, September brings a gentle breeze with an average wind speed of 4.2 m/s (9 mph). This marks a subtle shift from the more vibrant gusts of summer, particularly notable in July when winds were at their calmest, averaging just 3.7 m/s (8 mph). The trend hints at a gradual increase in wind intensity as the year progresses, with speeds picking up again in October to 5.5 m/s (12 mph). Overall, September serves as a transitional month where the winds soften, offering a tranquil respite before the lively autumn gales sweep in, reflecting the serene beauty of the Irish landscape during this time of year.
The weather in Douglas changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Douglas and find detailed weather information for every month.
September and January showcase notable contrasts in weather. In September, temperatures range from a minimum of 7°C (45°F) to a comfortable maximum of 21°C (70°F), with an average of 14°C (58°F). The month experiences 74 mm (2.9 in) of precipitation over about 13 days, accompanied by high humidity at 85%. In contrast, January presents cooler conditions, with temperatures dipping to a minimum of 0°C (32°F) and peaking at 13°C (56°F), averaging 7°C (46°F). While precipitation is slightly lower at 67 mm (2.6 in) over 11 days, humidity remains relatively high at 83%. For a deeper look into January weather specifics, visit Douglas weather in January.
In September, temperatures are generally milder, ranging from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), with an average temperature of 14°C (58°F). The month experiences around 74 mm (2.9 in) of precipitation over approximately 13 days, while humidity remains relatively high at 85%. In contrast, February is cooler, featuring a minimum temperature of 0°C (33°F) and a maximum of 13°C (55°F), with an average of 8°C (46°F). This month sees increased precipitation at 118 mm (4.6 in) across about 17 days, but humidity remains consistent at 85%. For a detailed look at the weather specifics for February, check out Douglas weather in February.
In September, the weather is generally milder with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), culminating in an average of 14°C (58°F). The month also sees about 74 mm (2.9 in) of precipitation over approximately 13 days, paired with a high humidity level of 85%. In contrast, March presents colder conditions, with temperatures dipping as low as -3°C (27°F) and peaking at 13°C (56°F), averaging 8°C (46°F). Rainfall in March is a bit heavier, totaling around 91 mm (3.6 in) across 17 days, while humidity remains consistently high at 84%. For more specific details on March weather conditions, you can explore Douglas weather in March.
When comparing the weather in September and April, we see notable differences in temperature and conditions. In September, temperatures range from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F). The month experiences 74 mm (2.9 in) of precipitation over 13 days and maintains a high humidity level of 85%. In contrast, April's temperatures are cooler, with a minimum of 1°C (34°F) and a maximum of 14°C (58°F), averaging 9°C (49°F). April also has slightly less precipitation at 73 mm (2.9 in) across 11 days, while humidity levels are marginally lower at 84%. For a more detailed look at the weather specifics, visit Douglas weather in April.
September and May feature similar weather patterns, but with some notable differences. In September, the temperatures range from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F). Conversely, May sees slightly cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 19°C (67°F), averaging 11°C (53°F). Precipitation levels are comparable, with September experiencing 74 mm (2.9 in) over 13 days and May having 75 mm (3.0 in) across 12 days. Humidity levels are also similar, with September at 85% and May at 84%. For more details, you can visit Douglas weather in May.
In comparing the weather of September and June, both months exhibit similar average temperatures, with June having a slightly warmer maximum of 22°C (71°F) compared to September's 21°C (70°F). However, September tends to experience more rainfall, recording 74 mm (2.9 in) over 13 days, while June has a drier spell with 61 mm (2.4 in) across only 11 days. Interestingly, humidity remains consistent at 85% for both months, contributing to a generally muggy feel. For a more detailed look at June weather in a specific area, you can check Douglas weather in June.
In comparing the weather between September and July, September tends to be cooler, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), while July enjoys slightly warmer temperatures, averaging from 10°C (51°F) to 23°C (73°F). Both months experience a similar number of rainy days—13 days in September compared to 12 in July—but September sees slightly higher precipitation at 74 mm (2.9 in) compared to July’s 61 mm (2.4 in). Notably, humidity remains consistent at 85% across both months, contributing to a rather muggy feel. For more details on July's weather, you can visit Douglas weather in July.
In comparing the weather between September and August, we see a notable shift in temperatures. September tends to be slightly cooler, with minimum temperatures around 7°C (45°F) compared to August’s 10°C (50°F). The average temperature in September is 14°C (58°F), while August has a warmer average of 16°C (60°F). Although the maximum temperature in September is comparable at 21°C (70°F) to August's peak of 22°C (71°F), September brings an increase in precipitation, totaling 74 mm (2.9 in) over 13 days, compared to 88 mm (3.5 in) across 14 days in August. Humidity levels are similar, with September at 85% and August at 84%. For further details, you can check out the complete insights in Douglas weather in August.
September and October showcase a transition in weather as autumn deepens. September typically experiences a milder climate, with average temperatures ranging from a minimum of 7°C (45°F) to a maximum of 21°C (70°F) and 74 mm (2.9 in) of precipitation over 13 days. In contrast, October sees cooler temperatures, with averages dropping to a minimum of 4°C (39°F) and a maximum of 18°C (64°F), alongside an increase in precipitation to 112 mm (4.4 in) over 15 days. The humidity also remains quite high, hovering around 85% in September and slightly increasing to 86% in October. For more detailed insights, check Douglas weather in October.
In September, temperatures typically range from a minimum of 7°C (45°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F). The month experiences moderate precipitation, totaling 74 mm (2.9 in) over about 13 days and a relatively high humidity level of 85%. In contrast, November sees cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 15°C (59°F), averaging only 9°C (49°F). This month is wetter, recording 101 mm (4.0 in) of precipitation over 15 days and slightly lower humidity at 84%. For more detailed information on November weather, you can check Douglas weather in November.
September weather is characterized by milder temperatures, with averages around 14°C (58°F) and maximums reaching 21°C (70°F). With about 74 mm (2.9 in) of precipitation over approximately 13 days, the humidity remains high at 85%, making the air feel quite moist. In contrast, December experiences cooler temperatures, with averages dropping to 8°C (47°F) and maximums of only 14°C (57°F). Additionally, precipitation increases to 122 mm (4.8 in) across 17 days, and humidity levels remain relatively similar at 83%. For a more detailed look at December weather, you can visit Douglas weather in December.
As September settles in Douglas, the weather begins to shift, offering a refreshing contrast to the vibrant summer months. With a pleasant average temperature hovering around a mild 14°C (58°F), the days offer a comfortable respite, while cooler evenings remind us that autumn is on the horizon. Though it's still relatively humid, the increase in precipitation—seen through about half the month experiencing some rain—creates a lush landscape that adds to the town's charm. For those wanting to explore more about the climate nuances throughout the year, visit Douglas Climate.