Last updated: March 17, 2025
September in Portumna, Ireland, presents a dynamic weather profile, with temperatures ranging from a chilly 2°C (36°F) at night to a pleasant maximum of 26°C (79°F) during the day. The month averages around 13°C (56°F), making it an ideal time for outdoor activities amidst the lush landscapes. However, it's wise to anticipate rain, as September brings 79 mm (3.1 in) of precipitation over approximately 14 days, contributing to a high humidity level of 88%. Visitors and locals alike should prepare for a mix of sunshine and showers, allowing for a rich experience of Portumna’s beautifully evolving scenery.
In September, Portumna, Ireland, begins to embrace the subtle shift towards autumn, showcasing a temperature range that hints at both warmth and coolness. With minimum temperatures nudging down to 2°C (36°F) and averages around 13°C (56°F), the month maintains a comfortable charm. The peak warmth of 26°C (79°F) offers delightful days that are often perfect for outdoor activities, yet as the sun begins to retreat earlier in the evening, the crispness of the season re-emerges. This transitional period marks a significant drop from the summer highs, gently reminding residents and visitors alike that winter is on the horizon, while still allowing for lingering moments of warmth and vibrancy in the lush Irish landscape.
September in Portumna, Ireland, typically experiences a moderate precipitation level of 79 mm (3.1 in) across approximately 14 days, making it a month of noticeable rainfall without overwhelming intensity. Compared to the preceding month of August, which recorded a heftier 110 mm, September brings a slight reprieve in rainfall while still maintaining a consistent pattern of wet days. This trend of decreasing rainfall continues into October, which sees an increase again to 95 mm, suggesting a seasonal shift. Overall, September serves as a transitional bridge—balancing the lingering summer showers of August with the upcoming dampness of autumn, embodying the unpredictable charm of Ireland's weather.
September in Portumna, Ireland, is characterized by a notable uptick in humidity, returning to a robust 88%, reminiscent of the cozy, moisture-laden atmosphere of the winter months. This slight increase follows a summer where humidity remained relatively stable at 85%, indicating a shift back to the more humid conditions typical of the autumn season. As nature prepares for the coming chill, the air in September feels rich and alive, making it a time of transition where lush greenery thrives under the warmth of the lingering summer sun before yielding to the dampness of October's 91% humidity. This cyclical pattern not only highlights the variability of Ireland's weather but also enhances the enchanting landscape that defines Portumna’s charm.
As summer transitions into autumn, September in Portumna, Ireland brings a UV Index of 5, categorizing it in the moderate exposure range. This signals a shift from the peak very high levels experienced in July and August, where sunbathers had only 15 minutes before risk of burning. With a burn time of 30 minutes, September offers a more forgiving sun, allowing residents and visitors alike to enjoy the outdoors with a bit more protection. As the days shorten and the temperatures cool, the UV Index gradually tapers off, resembling early spring levels in the months ahead. For detailed insights on the UV Index throughout the year, visit Portumna UV Index.
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As summer gracefully transitions into autumn, September in Portumna, Ireland offers a delightful blend of warmth and light, boasting 261 hours of sunshine. This month showcases a notable drop from the bustling sunshine of July and August, which recorded impressive hours of 363 and 296 respectively. However, September still stands out as a vibrant period compared to the dreary winter months ahead, where sunshine dwindles significantly. With the high of May at 361 hours diminishing slowly, September serves as a gentle reminder of the lingering summer days before the sun sinks lower in the sky and invites the crispness of October. As the days grow shorter, the golden glow of the fading sun casts a warm hue over Portumna, making it a perfect time for memorable outdoor activities against the backdrop of stunning autumn foliage.
As September rolls in, Portumna, Ireland, bids farewell to summer's warmer days, with the likelihood of sunny weather dropping to a modest 16%. This marks a notable decline as the month transitions from the slightly brighter August (23%), illustrating a seasonal shift towards cloudier, wetter conditions. In contrast to the earlier spring months like April (41%), when sunshine was more abundant, September's prospects appear rather dim, reflecting a trend of decreasing daylight and increasing rainfall as autumn approaches. While it may not be the sunniest month, the charm of Portumna's landscapes can still be appreciated, albeit under a veil of clouds more often than not.
As summer gives way to autumn in Portumna, Ireland, September marks a notable transition in daylight duration, offering about 12 hours of light. This decrease from the lengthy 16 hours basked in during the peak of summer in June and July signals a gradual shift towards shorter days. Following the vibrant light of May and June, September’s daylight serves as a bridge, descending from the long summer evenings while still retaining a touch of warmth. As the month progresses, the daylight ebbs further into the shorter hours of October, paving the way for the cozy, candlelit days of winter ahead. This rhythmic change in daylight not only reflects the seasonal shift but also paints the landscape in transitioning hues as nature begins to prepare for the quieter months ahead.
As summer gives way to autumn in Portumna, Ireland, the winds take on a gentler tone, with September's average wind speed settling at 3.2 m/s (7 mph). This month mirrors the mild breezes of August and reflects a consistent trend seen throughout the late summer months. From a peak in February at 5.2 m/s (12 mph), the winds gradually decrease, creating a calm backdrop for the changing foliage. With temperatures cooling and daylight fading, the soft whispers of September's winds invite locals and visitors alike to embrace the serene beauty of the season. The transition is marked by a slight increase in October's gusts, hinting at the briskness of the approaching winter months.
The weather in Portumna 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 Portumna and find detailed weather information for every month.
In September, the weather is comparatively warmer, featuring a range of temperatures from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), with an average of 13°C (56°F). This month sees about 79 mm (3.1 in) of precipitation over 14 days, combined with high humidity levels of 88%.
In contrast, January presents a chillier climate with temperatures dipping to a minimum of -6°C (22°F) and a maximum of 14°C (57°F), resulting in an average of 6°C (43°F). Precipitation is slightly lower at 67 mm (2.6 in) across 12 days, while humidity remains the same at 88%.
For a more detailed look at January weather, you can visit Portumna weather in January.
In September, temperatures range from a low of 2°C (36°F) to a high of 26°C (79°F), with an average of 13°C (56°F). The month sees a total precipitation of 79 mm (3.1 in) over approximately 14 days, while humidity remains at a consistent 88%. In contrast, February experiences colder temperatures, with a minimum of -3°C (27°F) and a maximum of 15°C (60°F), averaging around 6°C (43°F). This month also has higher precipitation at 113 mm (4.4 in) spread over about 17 days, yet it maintains the same humidity level of 88%. For more detailed information about February weather, you can visit Portumna weather in February.
When comparing the weather in September and March, it's clear that both months exhibit distinct characteristics. September enjoys a milder temperature range with minimums around 2°C (36°F) and maximums reaching up to 26°C (79°F), averaging a comfortable 13°C (56°F). This month sees moderate precipitation at 79 mm (3.1 in), spread over 14 days, with high humidity levels at 88%.
In contrast, March presents a cooler climate, with temperatures dipping as low as -6°C (22°F) and peaking at a maximum of 17°C (63°F), averaging only 7°C (44°F). Precipitation is slightly higher in March, totaling 101 mm (4.0 in) over 17 days, while humidity remains relatively constant at 87%. For additional details on the climate, you can explore Portumna weather in March.
When comparing the weather in September and April, one can observe notable differences in temperature and precipitation. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), with an average of 13°C (56°F), creating a warmer and more stable atmosphere. In contrast, April experiences cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 21°C (70°F), averaging around 9°C (48°F).
Precipitation is also a factor, as September receives 79 mm (3.1 in) over approximately 14 days, while April registers slightly less at 56 mm (2.2 in) over 10 days. Despite the marginally lower humidity in April at 86% compared to September's 88%, both months maintain fairly high levels of moisture in the air. For more detailed insights into April's weather, you can visit Portumna weather in April.
In comparing the weather of September and May, September typically offers warmer overall temperatures, with an average of 13°C (56°F) and a maximum reaching 26°C (79°F), while May has a cooler average of 11°C (53°F) and a lesser maximum of 24°C (76°F). September also features higher minimum temperatures, peaking at 2°C (36°F) compared to May’s chilly minimum of -1°C (31°F). In terms of precipitation, September sees slightly more rainfall at 79 mm (3.1 in) over 14 days, while May has 66 mm (2.6 in) of rain across 13 days, resulting in a marginally drier month. Humidity is slightly higher in September at 88%, compared to May’s comfortable 83%. For a more detailed look at May weather in Portumna, you can check Portumna weather in May.
In comparing the weather of September and June, September tends to be slightly cooler, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), while June's temperatures are a bit warmer, with a minimum of 5°C (41°F) and a maximum of 29°C (85°F). Both months experience similar levels of precipitation, with September receiving 79 mm (3.1 in) and June 70 mm (2.8 in), each spanning about 14 rainy days. Humidity levels are slightly higher in September at 88% compared to June's 83%, contributing to a more damp feel toward the end of the summer. For more detailed insights about June weather specifically, check out Portumna weather in June.
In comparison to July, September experiences a broader temperature range, with temperatures dropping to a minimum of 2°C (36°F) and peaking at 26°C (79°F). The average temperature in September is slightly cooler at 13°C (56°F) compared to July's average of 16°C (60°F). Both months have similar levels of precipitation, with September receiving about 79 mm (3.1 in) over 14 days, while July has slightly less at 76 mm (3.0 in) over 13 days. Additionally, September sees a slightly higher humidity level at 88%, compared to July's 85%. For more details on July weather, you can refer to Portumna weather in July.
In comparing the weather of September and August, September tends to be slightly cooler, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 26°C (79°F), while August sees higher averages, with a minimum of 6°C (43°F) and a maximum of 24°C (76°F). Precipitation levels are also higher in August at 110 mm (4.3 in) over 18 days compared to September's 79 mm (3.1 in) over 14 days. However, September's humidity is a bit higher at 88%, in contrast to August's 85%. For a detailed look at the weather conditions in August, you can visit Portumna weather in August.
September and October present a noticeable shift in weather patterns. September boasts a broader temperature range with a minimum of 2°C (36°F) and a maximum of 26°C (79°F), making it warmer on average at 13°C (56°F). In contrast, October sees cooler temperatures, dipping as low as 0°C (33°F) and reaching a maximum of 20°C (67°F), with an average of 10°C (51°F). Precipitation increases slightly in October to 95 mm (3.7 in), occurring on 15 days, compared to September's 79 mm (3.1 in) over 14 days. Humidity also rises in October to 91% from September's 88%, contributing to a more damp and cool atmosphere. For a detailed look at the weather patterns for October, you can check out Portumna weather in October.
September typically experiences milder weather compared to November, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 26°C (79°F) and an average of 13°C (56°F). This month also sees 79 mm (3.1 in) of precipitation over about 14 days, accompanied by a humidity level of 88%. In contrast, November brings cooler temperatures, with lows plunging to -2°C (28°F) and an average of 8°C (46°F), peaking at just 15°C (60°F). Rainfall increases slightly to 91 mm (3.6 in) across 15 days, and humidity rises to 92%. For a more detailed look at what to expect, you can check Portumna weather in November.
Comparing the weather in September and December reveals notable differences. September generally has milder temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 26°C (79°F) and an average of 13°C (56°F). The month is characterized by relatively lower precipitation levels of 79 mm (3.1 in) across 14 days, along with a high humidity of 88%. In contrast, December experiences colder conditions, with temperatures dipping as low as -6°C (22°F) and peaking at 14°C (57°F), averaging around 6°C (44°F). This month also sees increased precipitation at 109 mm (4.3 in) over 17 days and maintains a similar humidity level of 89%. For more details on December weather, you can refer to Portumna weather in December.
As the summer warmth begins to wane, September in Portumna welcomes a notable transition in weather patterns. With average temperatures hovering around a refreshingly mild 13°C, the month often sees a mix of pleasant afternoons reaching up to 26°C and cooler nights dipping to 2°C. Rainfall becomes more frequent, bringing an average of 79 mm across 14 days, contributing to the 88% humidity that characterizes this period. This blend of warmth and moisture sets September apart, making it both a vibrant and occasionally unpredictable month. For a deeper understanding of what to expect throughout the year, explore Portumna Climate.