Last updated: March 17, 2025
September in Westport, Ireland brings a dynamic blend of weather, characterized by a maximum temperature reaching up to 25°C (77°F), while the average hovers around a milder 13°C (56°F). As the season transitions, temperatures can dip as low as 2°C (35°F), showcasing the brisk climate. Expect a fair amount of rainfall, with 101 mm (4.0 in) accumulating over 19 days, contributing to the region’s lush greenery. The air is often filled with a notable humidity level of 88%, adding a touch of dampness that is quintessential to Irish weather. Embrace the charming unpredictability of September in Westport, where each day offers a new atmospheric experience.
In September, Westport, Ireland experiences a pleasing transition as summer gently gives way to autumn. With minimum temperatures around 2°C (35°F) and pleasant highs reaching 25°C (77°F), the month offers a delightful blend of warmth and cooling breezes. The average temperature settles at 13°C (56°F), providing a comfortable climate for outdoor activities and scenic exploration. This period marks a cooling trend from the heights of summer, following August’s warmer averages. As leaves begin to change color, September invites locals and visitors alike to embrace the crisp air, making it a perfect time for hiking and enjoying the stunning landscapes that this charming coastal town has to offer.
September in Westport, Ireland, remains a notably wet month, with an average precipitation of 101 mm (4.0 in) spread over 19 days. This level of rainfall reflects a pattern consistent with the transition to autumn, where moisture increases following the summer months. Following August's high of 144 mm, September brings a slight reprieve, but the rain continues to nourish the lush landscapes. As autumn approaches, Westport experiences a steady rhythm of rainfall, often accompanied by cool breezes, setting a picturesque scene that characterizes this charming coastal town. The transition from summer's warmth to autumn's crispness is marked not just by the changing colors, but also by the steadfast presence of rain that ensures the region remains vibrant and thriving.
In September, Westport, Ireland experiences a notable return to its characteristic higher humidity levels, peaking at 88%. This fluctuation marks a trend as humidity begins to rise again after a brief dip during the warmer months of May and June, which recorded slightly lower levels of 83%. The warmth of summer gives way to an increase in moisture as summer edges toward autumn, indicative of the region's maritime climate. As the month progresses, Westport's humidity levels set the stage for the cooler, wetter weather of October, which typically sees an increase to 91%, reinforcing the area's reputation for lush landscapes and the gentle embrace of coastal breezes. Overall, September serves as a transitional month where the air thickens with moisture, offering a refreshing change before the cooler months ahead.
As we transition into September, Westport, Ireland experiences a noticeable shift in UV intensity, marking a drop to a moderate UV Index of 5. This indicates a moderate risk of harm from unprotected sun exposure, with a burn time of approximately 30 minutes for most individuals. Compared to the peaks of summer, where June and July displayed very high indices of 8, September offers a more manageable sun scenario but still calls for some caution. This moderate rating aligns with the overall trend of decreasing UV levels as autumn approaches, emphasizing the importance of sun protection in early fall as well. For detailed insights on the UV Index throughout the year, check out Westport UV Index.
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September in Westport, Ireland, ushers in a delightful shift as summer fades, offering 287 hours of sunlight. This month reflects a gentle decline in sunshine compared to the sun-drenched peak of May, which recorded 402 hours. Following the warm glow of July and August, both basking in over 340 hours, September provides a softer illumination, hinting at the crisp autumn days ahead. As the year progresses towards the darker months of October and November, where sunlight dips to 222 hours and 115 hours respectively, September stands out as a beautiful bridge, inviting locals and visitors alike to embrace the tail end of a vibrant summer in this picturesque coastal town.
In Westport, Ireland, the likelihood of sunny weather in September stands at 14%, which aligns with the trend of diminishing sunshine as summer transitions into autumn. This month typically experiences less sunshine than its summer predecessors, particularly July and August, which offer chances of 22% and 19%, respectively. Notably, September is on par with the cloudier months of March and December, suggesting that visitors seeking brightness during this time may want to keep their expectations in check. With April emerging as the standout month for sun with a 40% chance, it’s clear that early spring holds the most promise for those hoping to soak up some rays in Westport.
As the summer sun begins to wane, September in Westport, Ireland, offers a gentle transition with about 12 hours of daylight. This month marks a noticeable shift from the long, bright days of summer, where daylight peaked at 16 hours in June and July. Although September enjoys a respectable amount of daylight, it signals the start of shorter days ahead, dipping to 10 hours in October. The gradual decrease from the peak of summer to the crisp embrace of autumn invites a rich tapestry of seasonal changes, making September a beautiful blend of lingering light and the anticipation of autumn's arrival. As daylight diminishes, the landscape transforms, illuminating the breathtaking coastal scenery that Westport is renowned for.
In September, Westport, Ireland experiences a gentle breeze with an average wind speed of 3.4 m/s (8 mph), marking one of the quieter months for wind activity. This slight dip follows the summer's peak winds in July, where speeds dropped to a low of 2.7 m/s (6 mph). As autumn approaches, there's a gradual increase in wind speed, hinting at the more dynamic weather to come in the months ahead. Compared to the preceding months, September transitions smoothly from the calm of summer into the briskness of fall, paving the way for October’s increase to 4.4 m/s (10 mph), revealing a subtle yet noticeable shift in Westport's atmospheric temperament.
The weather in Westport 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 Westport and find detailed weather information for every month.
September and January present quite contrasting weather patterns. In September, the temperatures range from a mild minimum of 2°C (35°F) to an average of 13°C (56°F) and a maximum of 25°C (77°F), making it a generally warmer month. However, with 101 mm (4.0 in) of precipitation spread over 19 days, the month can also be quite rainy. In contrast, January experiences colder conditions, with temperatures dipping to a minimum of -3°C (26°F) and an average of 6°C (43°F) that peaks at 13°C (57°F). Despite a slightly lower total precipitation of 95 mm (3.7 in) over 14 days, the humidity remains high at 88% in both months. For more detailed insights on January weather, visit Westport weather in January.
September and February present contrasting weather patterns, despite both having an average humidity of 88% and similar precipitation days. In September, temperatures range from a mild 2°C (35°F) at night to a pleasant 25°C (77°F) during the day, with an average of 13°C (56°F). In contrast, February is cooler, with nighttime lows dipping to -4°C (26°F) and daytime highs reaching only 15°C (59°F), averaging around 6°C (43°F). Additionally, February experiences higher precipitation, totaling 144 mm (5.7 in), compared to September's 101 mm (4.0 in). For more detailed information about February weather in Westport, you can visit Westport weather in February.
September and March showcase contrasting weather patterns. In September, temperatures range from a brisk 2°C (35°F) to a pleasant maximum of 25°C (77°F), with an average of 13°C (56°F) and 101 mm of precipitation distributed over 19 days, coupled with high humidity at 88%. Conversely, March features cooler conditions, where temperatures dip lower, from a minimum of -5°C (24°F) to a maximum of 17°C (62°F), with an average of 7°C (44°F). Although March has slightly more precipitation at 114 mm over 17 days, the humidity remains comparable at 87%. For a closer look at March weather specifics, you can check Westport weather in March.
In September, the weather tends to be milder and more stable, with average temperatures ranging from 2°C (35°F) to a comfortable maximum of 25°C (77°F). The month sees about 101 mm (4.0 in) of precipitation spread over 19 days, contributing to an overall high humidity of 88%. In contrast, April experiences slightly cooler conditions, with temperatures varying from -2°C (28°F) to a maximum of 20°C (69°F). Precipitation is lower in April at 65 mm (2.6 in) over 12 days, and the humidity is slightly less at 86%. For a closer look at April weather, you can check Westport weather in April.
September and May both feature similar maximum temperatures, reaching up to 25°C (77°F), but they differ significantly in their overall climates. In September, the average temperature is slightly higher at 13°C (56°F) compared to May's average of 11°C (52°F). Additionally, September experiences more precipitation, with 101 mm (4.0 in) over 19 days, versus May's 77 mm (3.0 in) across 14 days. Humidity levels are also higher in September at 88%, while May's humidity is lower at 83%. For more information on the weather conditions in May, you can refer to Westport weather in May.
September and June each present their unique climatic conditions, with notable differences in temperature and precipitation. September experiences cooler minimum temperatures, averaging around 2°C (35°F), while June starts at a slightly milder 5°C (41°F). Although both months have the same average temperature of 13°C (56°F), June peaks higher, reaching a maximum of 29°C (84°F) compared to September's 25°C (77°F). Precipitation levels are also comparable, with September receiving 101 mm (4.0 in) over 19 days and June slightly less at 91 mm (3.6 in) over 17 days. The humidity is slightly higher in September at 88%, compared to June's 83%. For more details on June weather, check out Westport weather in June.
When comparing the weather in September to that of July, several notable differences emerge. September has a wider temperature range, with a minimum of 2°C (35°F) and a maximum of 25°C (77°F), whereas July's temperatures are somewhat warmer, starting at 7°C (44°F) and reaching up to 28°C (83°F). Both months receive a similar amount of precipitation at 101 mm (4.0 in), but September experiences slightly more rainy days, totaling 19 compared to July’s 16. Despite the similar precipitation levels, September has a higher humidity level at 88%, compared to July's 85%. For a more detailed look at the weather specifics for July, you can check Westport weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with minimum temperatures dropping to 2°C (35°F) compared to August's 6°C (43°F). The average temperature in September is also lower at 13°C (56°F), while August averages 15°C (58°F). While the maximum temperatures are similar—25°C (77°F) in September and 24°C (75°F) in August—September experiences more rainfall, with 101 mm (4.0 in) over 19 days, compared to August's 144 mm (5.7 in) over 22 days. Humidity levels are slightly higher in September at 88%, compared to August's 85%. For more information on August weather, visit Westport weather in August.
In September, the weather offers a mild transition with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), averaging around 13°C (56°F). The month sees significant precipitation, with 101 mm (4.0 in) falling over 19 days, contributing to a humidity level of 88%. As October arrives, temperatures drop further, with daytime highs peaking at 19°C (67°F) and lows reaching 0°C (32°F), leading to an average of 10°C (51°F). Additionally, October is notably wetter, experiencing 138 mm (5.4 in) of rainfall over 21 days and slightly higher humidity at 91%. For a detailed look at conditions, check out Westport weather in October.
September and November present contrasting weather patterns, reflecting the transition from late summer to autumn. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 25°C (77°F), with an average of 13°C (56°F). The month experiences about 101 mm (4.0 in) of precipitation over 19 days, accompanied by high humidity at 88%. In contrast, November brings cooler conditions, with daily temperatures dipping to a minimum of -2°C (30°F) and reaching a maximum of 15°C (59°F), averaging around 8°C (46°F). Rainfall increases slightly to 121 mm (4.8 in) over 18 days, and humidity rises to 92%. For detailed insights on November's conditions, you can check Westport weather in November.
In September, the weather is generally milder, with temperatures ranging from a low of 2°C (35°F) to a pleasant high of 25°C (77°F), complemented by an average of 13°C (56°F). The month experiences about 101 mm (4.0 in) of precipitation spread over 19 days, with humidity levels reaching 88%. In contrast, December brings significantly colder temperatures, with a minimum of -3°C (27°F) and a maximum of 13°C (55°F), averaging just 7°C (44°F). The precipitation increases to 134 mm (5.3 in), also occurring over 19 days, and the humidity remains similar at 89%. For more details on the December weather, you can visit Westport weather in December.
As the summer fades, September in Westport brings a noticeable shift in weather, characterized by cooler temperatures and a notable increase in precipitation. While daytime highs can reach a pleasant 25°C, the average drops to a crisp 13°C, creating a refreshing atmosphere ideal for autumn strolls. However, with nearly two-thirds of the month experiencing rainfall, expect to see more cloudy days than in the sunnier summer months. The high humidity adds to the feel, making this September distinctly different from the drier and warmer summer season. For those interested in the broader climate trends, visit Westport Climate.