Last updated: March 17, 2025
In September, Bundoran, Ireland, offers a unique blend of mild temperatures and atmospheric charm. With daytime highs reaching a pleasant 24°C (76°F) and evening lows dipping to a cool 3°C (37°F), the month showcases an average temperature of 13°C (55°F). Expect a fair share of rain, as the town experiences approximately 106 mm (4.2 in) of precipitation over 18 days, contributing to a notably high humidity level of 87%. This mix of conditions creates an invigorating coastal experience, perfect for those drawn to the beauty of Ireland's landscapes in early autumn.
As summer transitions to autumn, September in Bundoran, Ireland offers a pleasant shift in temperatures. With minimums around 3°C (37°F) and averages peaking at 13°C (55°F), the days are still warm, allowing outdoor enthusiasts to enjoy the lingering warmth of late summer. The maximum temperatures reaching 24°C (76°F) provide ideal conditions for coastal activities, as the sea remains invitingly warm. This month stands out for its comfortable climate, striking a balance between the warmth of August and the cooler onset of October, making it an ideal time for visitors to explore the scenic beauty of this coastal town.
In September, Bundoran experiences a notable dip in its precipitation, with 106 mm (4.2 in) of rainfall occurring over approximately 18 days. This marks a slight decrease from the wetter summer months, particularly August, which saw 157 mm (6.2 in) across 22 days. As autumn begins to set in, the frequency of rainy days remains consistent, suggesting that while the overall rainfall has reduced, the region continues to experience regular showers. This pattern indicates that while September offers some respite from the heavier summer rains, it still maintains Bundoran's characteristic, lush greenery in preparation for the wetter months ahead.
In September, Bundoran, Ireland, experiences a noticeable increase in humidity, rising to 87%. This marks a shift from the summer months of July and August, which both maintain a humidity level of 86%. As the autumn season approaches, the overall trend reflects a gradual escalation in humidity levels, starting from January's 84% and culminating in November's peak at 88%. It's interesting to note that while the humidity remains relatively high throughout the year, September signifies a transition, as the air becomes noticeably thicker, hinting at the seasonal change ahead. This blend of moist air not only contributes to the lush scenery of Bundoran but also evokes the cozy, inviting atmosphere typical of Ireland’s fall.
As summer fades into autumn in Bundoran, Ireland, the UV Index begins to show a noticeable decline. In September, the index sits at a moderate 5, indicating that although the sun's intensity is less than in the peak summer months of June and July—which boast a high 8—it's still important to be cautious. The burn time increases slightly to 30 minutes, allowing for a bit more time under the sun without risk of harm. This trend reflects a gradual cooling down of UV exposure following the sizzling summer, making September an ideal month for outdoor activities as you soak up the remaining rays. For more detailed information on UV levels throughout the year, check out the Bundoran UV Index.
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September in Bundoran, Ireland, embraces a vibrant transition from the sun-drenched summer months to the cooler autumn breezes. With 257 hours of sunshine, it stands out as a month where warm, golden days linger, allowing locals and visitors alike to savor the tail end of the outdoor season. This sunny spurt follows a peak in May with 365 hours, showcasing the town's propensity for pleasant weather that persists through the vibrant summer. Although the sun begins to shy away come October with 202 hours, September remains a delightful bridge, blending the excitement of summer adventures with the crisp anticipation of fall. This gentle decline in daylight hours reflects a natural rhythm, inviting togetherness and reflection as the days gradually shorten.
In Bundoran, Ireland, the likelihood of sunny weather tends to fluctuate throughout the year, with September experiencing a modest 14% chance of sunshine. This marks a slight dip compared to the spring months, particularly April, which boasts a more favorable 35% chance. The summer months also show a decline in sun exposure, with only 15% in June and a mere 16% in August. As the season transitions to autumn, this continued chance of cloud cover and rain becomes more pronounced. Consequently, travelers and locals alike should prepare for variable weather conditions, as September can often be a mix of the fading summer sun and the emerging coolness of fall.
As summer fades into fall, September in Bundoran, Ireland, experiences a gentle decline in daylight, offering about 12 hours of sun. This shift reflects the transition from the vibrant long days of summer—where June and July basked in up to 17 hours of daylight—toward the shorter days of autumn. After the peak of 16 hours in May, September’s daylight serves as a reminder of nature's rhythms, where bright evenings begin to give way to the cooler, darker months ahead. The contrast is palpable as the days gradually shrink from this month’s light to the 10 hours expected in October and further to just 7 hours by December. Thus, September embodies a bittersweet balance, allowing locals and visitors alike to savor the waning warmth before autumn fully sets in.
As September settles in Bundoran, Ireland, the gentle winds begin to shift, maintaining an average speed of 3.4 m/s (8 mph). This month follows a notably calmer July, which recorded the year's lowest wind speed, and brings a slight increase that mirrors the transition from summer to autumn. While spring months saw higher winds—particularly February with its brisk 5.6 m/s (12 mph) gusts—September's breezes offer a refreshing yet mild touch, inviting both locals and visitors to relish the crisp air without the harshness often felt in the winter months ahead. The overall trend reveals a rhythmic ebb and flow of winds, where the temperate September air serves as a delightful precursor to the more robust gusts that characterize October and November.
The weather in Bundoran 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 Bundoran and find detailed weather information for every month.
September and January present quite contrasting weather conditions. In September, temperatures range from a chilly 3°C (37°F) at night to a warm average of 13°C (55°F) and peaking at 24°C (76°F) during the day. With 106 mm (4.2 in) of precipitation over 18 days, the month tends to be quite humid, averaging 87%. In contrast, January is noticeably colder, with temperatures dropping to a minimum of -3°C (26°F) and averaging 6°C (42°F), reaching a maximum of 14°C (57°F). Although January sees slightly less precipitation at 91 mm (3.6 in) over 16 days, the humidity remains relatively high at 84%. For more detailed insights about the weather in January, visit Bundoran weather in January.
September and February present contrasting weather experiences. In September, temperatures range from a mild minimum of 3°C (37°F) to a pleasant maximum of 24°C (76°F), with an average of 13°C (55°F). This month sees a high precipitation level of 106 mm (4.2 in) over 18 days, accompanied by elevated humidity at 87%. In contrast, February features colder temperatures, with a minimum of -4°C (25°F) and a maximum of 15°C (58°F), averaging 6°C (42°F). Precipitation increases to 137 mm (5.4 in) over 17 days, with slightly lower humidity at 84%. For a closer look at weather specifics for February, you can visit Bundoran weather in February.
In comparing the weather of September and March, we notice distinct differences in temperature and precipitation. September enjoys a milder climate with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), averaging around 13°C (55°F). It experiences around 106 mm (4.2 in) of precipitation over 18 days, accompanied by high humidity at 87%. In contrast, March sees cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 17°C (63°F), averaging only 6°C (44°F). The month has slightly more precipitation at 121 mm (4.8 in) over the same number of days, though with a lower humidity of 83%. For a deeper dive into the specific weather conditions in Bundoran during March, you can check the link: Bundoran weather in March.
September and April exhibit distinctly different weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), with an average of 13°C (55°F). The month sees substantial precipitation at 106 mm (4.2 in) over 18 days, alongside high humidity levels averaging 87%. In contrast, April experiences cooler temperatures, with minimums dipping to -1°C (30°F) and a maximum of 21°C (70°F), resulting in an average of 8°C (47°F). This month brings less rainfall, totaling 63 mm (2.5 in) over 14 days, and a slightly lower humidity of 84%. For a closer look at April weather, visit Bundoran weather in April.
When comparing September and May, the temperatures show a slight variation, with September's minimum at 3°C (37°F) and maximum reaching 24°C (76°F), while May experiences lower minimums at -1°C (31°F) and similar maximums of 25°C (77°F). Both months have relatively high precipitation, with September receiving 106 mm (4.2 in) over 18 days, compared to May's 84 mm (3.3 in) across 15 days. The humidity is slightly higher in September at 87%, compared to May’s 83%. For more detailed insights on May weather, you can visit Bundoran weather in May.
September and June present similar temperature averages, with September's minimum at 3°C and June's at 5°C. However, June tends to be slightly warmer, boasting a maximum of 28°C compared to September's 24°C. Both months experience substantial precipitation, with September receiving 106 mm over 18 days and June slightly higher at 115 mm across the same number of days. Humidity levels are also comparable, with September at 87% and June slightly lower at 83%. For a more detailed look at weather patterns, you can visit Bundoran weather in June.
When comparing the weather in September to that of July, we can see some notable differences. September tends to have cooler temperatures, with a minimum of 3°C (37°F) and an average of 13°C (55°F), compared to July’s milder minimum of 8°C (46°F) and average of 15°C (59°F). The maximum temperatures are also lower in September, peaking at 24°C (76°F) versus July’s 28°C (83°F). Precipitation levels are relatively similar, with September receiving 106 mm (4.2 in) over 18 days and July seeing slightly more at 109 mm (4.3 in) across 17 days. Humidity remains quite high in both months, with September at 87% and July at 86%. For more details about July weather, you can check Bundoran weather in July.
September experiences slightly cooler temperatures compared to August, with minimums dropping to 3°C (37°F) and an average around 13°C (55°F). In contrast, August sees higher lows of 6°C (43°F) and averages at 15°C (58°F). While the maximum temperatures in both months are fairly close, with September peaking at 24°C (76°F) and August at 23°C (74°F), September is notably wetter, receiving 106 mm (4.2 in) of precipitation over 18 days compared to August’s 157 mm (6.2 in) across 22 days. The humidity remains relatively high in both months, at 87% in September and 86% in August. For a closer look at August weather specifics, you can check Bundoran weather in August.
September offers a mild transition from summer with average temperatures ranging from 3°C (37°F) to a pleasant 24°C (76°F), but it also brings considerable rainfall, totaling 106 mm (4.2 in) over 18 days. The humidity remains high at 87%, contributing to a somewhat muggy atmosphere. In contrast, October sees a marked decrease in temperatures, with a range from 0°C (33°F) to a maximum of 20°C (68°F) and an average of 10°C (50°F). While October has a similar humidity level of 87%, it experiences increased precipitation, reaching 135 mm (5.3 in) across 20 days. For a more detailed look at October's weather, visit Bundoran weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), with an average of 13°C (55°F). The month experiences approximately 106 mm (4.2 in) of precipitation over 18 days, and humidity levels hover around 87%. In contrast, November sees cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 15°C (59°F), averaging 8°C (46°F). Precipitation increases slightly to 117 mm (4.6 in) over 20 days, with humidity rising to 88%. For more detailed insights into November weather, visit Bundoran weather in November.
In September, the weather is generally milder, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), making it a comfortable month for outdoor activities. The average temperature stands at 13°C (55°F) with a high humidity of 87% and about 106 mm (4.2 in) of precipitation over 18 days. In contrast, December brings chillier conditions, where temperatures drop significantly, with lows reaching -2°C (28°F) and averaging around 6°C (43°F). The month tends to be wetter, with around 125 mm (4.9 in) of rain over 21 days, and slightly lower humidity at 84%. For more details on December weather, visit Bundoran weather in December.
As September sweeps in, Bundoran experiences a notable shift in weather compared to the summer months. While daytime temperatures can pleasantly reach up to 24°C, the average cools to around 13°C, hinting at the transition to autumn. Nights bring a chill, dipping down to 3°C, making it essential to pack layers for evening outings. Rainfall becomes more frequent, with 18 days showing some precipitation that accumulates to 106 mm, leading to a humidity level hovering around 87%. This increase in rain and cooler temperatures marks September as a month of change, setting the stage for the cozy charm of fall. For more insights into what to expect throughout the year, check out Bundoran Climate.