Last updated: March 17, 2025
In September, Foynes, Ireland, experiences a vibrant transition into autumn, with temperatures ranging from a mild maximum of 26°C (80°F) to a cool minimum of 0°C (33°F). The average temperature sits at a comfortable 13°C (56°F), making it an enjoyable time for outdoor activities despite the 84 mm (3.3 in) of rainfall spread over 14 days. The high humidity at 88% adds a touch of moistness to the air, enhancing the lush Irish landscape. Prepare for a blend of sunny days interspersed with gentle showers, perfect for those who appreciate the rich beauty of Foynes in early autumn.
In Foynes, Ireland, September marks a transition into autumn, showcasing a blend of mild warmth and cooler evenings. With a minimum temperature that dips to 0°C (33°F), locals are greeted with brisk mornings, while the days can still feel pleasantly warm, reaching an average of 13°C (56°F) and peaking at a comfortable 26°C (80°F). This month stands out with its notable warmth compared to the preceding months, reflecting the lingering essence of summer before fall ushers in cooler temperatures. As the month progresses, the gradual decline in daily highs signals an impending shift, transitioning Foynes from its late summer vibrancy into the cozy embrace of autumn.
In September, Foynes experiences a notable transition in its weather, as the average precipitation reaches 84 mm (3.3 in) spread across 14 days. This amount marks a slight uptick from the relatively drier month of August, which recorded 122 mm. The increase in rainfall signifies the onset of autumn, as the landscape begins to soak up the lingering warmth of summer. Notably, September's precipitation amounts are lower than those in several preceding months, including February and August, suggesting a gradual tapering of summer rains. As the year progresses, the trend indicates that while Foynes remains accustomed to its fair share of rain, the precipitation this month prepares the ground for the season's richer, more consistent downpours to come in October and beyond.
September in Foynes, Ireland, marks a return to the year's peak humidity levels, aligning with January and February at a notable 88%. This month embodies the transition from summer's warmth to autumn's embrace, characterized by consistent moisture in the air. Notably, Foynes experiences a gradual decrease in humidity from the highs of spring and summer, dipping to 83% in May and June before rebounding in September. As the year progresses, humidity rises steadily, reaching its annual high of 92% in November. This trend emphasizes Foynes' reputation for a damp climate, offering a rich tapestry of atmospheric conditions throughout the year.
As summer fades into autumn, September in Foynes, Ireland, marks a notable shift in UV exposure. With a UV Index of 5, the category is classified as moderate, allowing for a burn time of about 30 minutes. This is a pleasant step down from the intense highs of June and July, which both saw UV levels soar to 8. As the sun's potency begins to wane, those venturing outdoors can feel comfortably protected, yet it remains wise to embrace appropriate sun safety measures. Observing the overall trend, the months of May through August typically herald high to very high UV levels, while September serves as a gentle reminder of the changing seasons. For more detailed information on the UV Index throughout the year, visit Foynes UV Index.
UV Risk Categories
As the summer draws to a close, September in Foynes, Ireland, offers a delightful blend of sunshine and cooler breezes, boasting 271 hours of sunlight. This month marks a gentle decline from the sun-soaked days of August, which enjoyed 324 hours, yet remains significantly brighter than the winter months ahead. The gradual decrease from July's peak of 357 hours illustrates the ebbing energy of the season, while still allowing for beautiful autumn afternoons. This trend of diminishing daylight continues into October, where the light dips further to 219 hours, painting a vivid picture of how Foynes transitions gracefully into the rich, cozy hues of fall.
In Foynes, Ireland, the likelihood of sunny weather in September tends to be moderately low, with only a 16% chance of sunshine. This trend reflects a seasonal pattern as the summer months give way to autumn, where the likelihood of sunny days generally decreases. Notably, September's sun probability is comparable to the damp, grey days of March and is dramatically lower than the sunnier April, which enjoys a 43% chance of sunshine. As the days shorten and temperatures begin to cool, the area's weather typically ushers in a mix of clouds and rain instead of bright, sunlit skies, making it a month where you might want to keep your umbrella handy.
As September rolls into Foynes, Ireland, daylight begins to wane, with the sun gracing the sky for approximately 12 hours each day. This marks a gentle transition from the long, sun-drenched days of summer, which offered up to 16 hours of light in June and July. The gradual reduction in daylight is a precursor to the cozy, introspective months ahead, as the vibrant hues of autumn start to emerge. From the springtime bloom of March’s 11 hours to May's lush 15 hours, Foynes delights in the slow yet melodic dance of changing seasons. While September still enjoys a generous amount of daylight, it reminds us that summer is slipping away, paving the way for the cooler and darker days of October, which will soon bring just 10 hours of light.
As September unfolds in Foynes, Ireland, the gentle whispers of wind settle at an average speed of 3.0 m/s (7 mph), marking a slight decrease from the summer's breezier months. This gradual tapering is part of a broader trend observed throughout the year, with the softest winds typically gracing the July and August months, only to pick up slightly again in October. The early months of the year, especially February, feature the strongest gusts, showcasing the natural ebb and flow of wind patterns. This seasonal variation underscores Foynes' dynamic climate, where each shift invites residents and visitors alike to appreciate the changing atmosphere.
The weather in Foynes 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 Foynes and find detailed weather information for every month.
When comparing the weather in September and January, we see notable differences in temperature and precipitation. September boasts a milder temperature range, with a minimum of 0°C (33°F), an average of 13°C (56°F), and a maximum of 26°C (80°F). In contrast, January brings colder conditions, featuring a minimum of -5°C (23°F), an average of 6°C (43°F), and a maximum of 14°C (58°F). While September experiences higher precipitation at 84 mm (3.3 in) over 14 days, January has slightly less at 69 mm (2.7 in) over 13 days. Notably, both months share a humidity level of 88%. For more detailed insights, you can check Foynes weather in January.
In comparing the weather between September and February, we observe a noticeable shift in temperatures and precipitation patterns. September boasts a milder temperature range, with averages of 13°C (56°F), peaking at a pleasant 26°C (80°F), while February experiences cooler conditions, where the average drops to 7°C (44°F) and maximums reach only 15°C (59°F). Precipitation is also more significant in February, totaling 113 mm (4.4 in) over 17 days, compared to September's 84 mm (3.3 in) across 14 days. Interestingly, both months share high humidity levels of 88%. For a more detailed look at February weather, check out Foynes weather in February.
In comparing the weather of September and March, we see notable differences. September tends to be milder, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 26°C (80°F), averaging around 13°C (56°F). The month experiences about 84 mm (3.3 in) of precipitation over approximately 14 days, all while maintaining a high humidity level of 88%. In contrast, March is cooler, featuring temperatures that range from a minimum of -6°C (21°F) to a maximum of 17°C (63°F), with an average of 7°C (44°F). This month gets a bit more rainfall, totaling around 100 mm (3.9 in) across 17 days, with humidity levels slightly lower at 87%. For more detailed insights, you can refer to Foynes weather in March.
When comparing the weather in September and April, notable differences emerge. September typically experiences milder temperatures, with averages around 13°C (56°F) and highs reaching up to 26°C (80°F), while April is cooler, averaging 9°C (48°F) and peaking at 21°C (70°F). Precipitation is more frequent in September, with about 84 mm (3.3 in) over 14 days, compared to April’s 60 mm (2.4 in) over 11 days. Humidity levels are slightly higher in September at 88%, while April maintains a steady 86%. For a more detailed look at the April weather, you can visit Foynes weather in April.
September generally experiences warmer temperatures compared to May, with average highs reaching 26°C (80°F) versus May's average of 25°C (77°F). However, May tends to have slightly cooler mornings, starting at a minimum of -1°C (31°F), while September rarely sees temperatures drop below 0°C (33°F). Precipitation levels are notably higher in September, with 84 mm (3.3 in) spread over 14 days, compared to May's 70 mm (2.7 in) across 13 days. Humidity is also higher in September at 88%, compared to 83% in May. For those interested in the specific weather patterns, you can check Foynes weather in May.
In September, the weather tends to be cooler compared to June, with minimum temperatures dropping to 0°C (33°F) and maximum temperatures reaching 26°C (80°F), whereas June sees a milder minimum of 4°C (40°F) and highs of 30°C (86°F). Average temperatures in September linger around 13°C (56°F), slightly cooler than June's 14°C (57°F). Additionally, September experiences more precipitation, with an average of 84 mm (3.3 in) spread over 14 days, compared to June's 65 mm (2.6 in) over the same number of days. Humidity levels are slightly higher in September at 88%, while June maintains a lower humidity of 83%. For a closer look at the weather specifics in June, visit Foynes weather in June.
In comparing the weather of September and July, September tends to be cooler with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 26°C (80°F), leading to an average of 13°C (56°F). In contrast, July experiences milder conditions, with temperatures hitting a minimum of 5°C (42°F) and a maximum of 28°C (83°F), averaging around 16°C (60°F). While September sees slightly more precipitation at 84 mm (3.3 in) over 14 days, July has a total of 74 mm (2.9 in) over 12 days, maintaining a relatively lower humidity level of 85% compared to September's higher 88%. For a detailed look at July's weather in Foynes, you can visit Foynes weather in July.
In September, the weather experiences a slight cooling trend compared to August, with average temperatures ranging from a minimum of 0°C (33°F) to a maximum of 26°C (80°F), while August typically sees milder readings from 6°C (42°F) to 24°C (75°F). Despite being slightly cooler, September boasts a higher average maximum temperature than August, suggesting warmer afternoons. However, September also brings increased precipitation of 84 mm (3.3 in) over 14 rainy days, compared to August’s 122 mm (4.8 in) over 18 days. Both months exhibit high humidity levels, with September at 88% and August at 85%. For a detailed look at August's weather, you can check out Foynes weather in August.
In comparison to September, October brings cooler temperatures, with average lows dipping to -1°C (30°F) and an average high of just 19°C (66°F) compared to September's mild highs of 26°C (80°F). While both months experience significant precipitation, October is slightly wetter, with 100 mm (4.0 in) of rain over 15 days, surpassing September's 84 mm (3.3 in) over 14 days. Additionally, humidity levels increase in October to 91%, compared to 88% in September. For more details on weather specifics, check out Foynes weather in October.
September and November present notably different weather patterns. In September, temperatures range from a minimum of 0°C (33°F) to a maximum of 26°C (80°F), with an average of 13°C (56°F). The month experiences 84 mm (3.3 in) of precipitation over 14 days, with a humidity level of 88%. In contrast, November sees cooler temperatures, with a minimum of -2°C (29°F), an average of 8°C (46°F), and a maximum of 16°C (61°F). Precipitation increases slightly to 90 mm (3.6 in) over 16 days, and humidity rises to 92%. For a more detailed look at November's weather, visit Foynes weather in November.
September and December present distinct contrasts in weather. In September, temperatures range from a minimum of 0°C (33°F) to a maximum of 26°C (80°F), with an average of 13°C (56°F), creating a mild environment. However, the month experiences considerable rainfall, totaling 84 mm (3.3 in) over approximately 14 days, coupled with high humidity at 88%. In contrast, December is notably colder, featuring a minimum temperature of -3°C (27°F) and a maximum of 14°C (58°F), with an average of 7°C (45°F). This month sees increased precipitation of 118 mm (4.7 in) spread over 17 days, and humidity remains slightly higher at 89%. For those interested in more specific insights, you can check Foynes weather in December.
As September unfolds in Foynes, it presents a unique transition from the warm summer days to the cooler embrace of autumn. With temperatures fluctuating between a peak of 26°C and a chilly 0°C, this month cradles both warmth and crispness, setting it apart from the consistently warmer summer months. Humidity levels linger around 88%, creating a refreshing yet damp atmosphere, while precipitation makes its presence felt with 84 mm over about two weeks. Thus, September serves as a bridge, offering a blend of lingering warmth and the fresh onset of fall, making it a distinctive chapter in Foynes' yearly weather narrative. For a deeper dive into what to expect throughout the year, explore Foynes Climate.