September Weather in Ballybunnion, Ireland

Last updated: March 17, 2025

Experience the captivating September weather in Ballybunion, Ireland, where temperatures gracefully transition from a high of 27°C (80°F) to a cooler average of 14°C (57°F), with minimum lows dipping to 4°C (40°F). This month, the town witnesses an average precipitation of 91 mm (3.6 in) over 18 days, contributing to a lush landscape under an impressive humidity level of 88%. Embrace the charm of autumn as it unfolds, perfect for exploring the scenic coasts, with the gentle sea breeze adding to the invigorating atmosphere.

September Temperature in Ballybunnion

In Ballybunnion, Ireland, September heralds the tail end of summer, bringing a pleasant shift in temperatures that still hold the warmth of the season. With an average temperature of 14°C (57°F), the month starts to cool down slightly, but not without offering a maximum of 27°C (80°F) on warmer days, making it one of the more inviting months of the year. Nighttime lows of 4°C (40°F) remind you that autumn is approaching, yet the overall warmth is a delightful embrace for both locals and visitors. As compared to the preceding summer months, September's temperatures begin a gradual decline, yet still retain that hint of summer's charm, making it a perfect time to explore the stunning coastal landscapes and enjoy the lingering sunshine before winter settles in.

September Weather in Ballybunnion: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ballybunnion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454546495357606057534847
Data source: Temperature data for Ballybunnion generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ballybunnion

September in Ballybunnion marks a transitional phase, with precipitation totaling 91 mm (3.6 in) over the month. This volume reflects a slight decrease from August's substantial 133 mm, yet it maintains a robust presence with rain observed on 18 days. As summer wanes, the frequent showers become a characteristic of early autumn, hinting at the shift in season. This month typically acts as a bridge, allowing residents to experience lingering warm days alongside the increasing rainfall, which sets the stage for the wetter months ahead. Overall, September embodies a delicate balance of summer's farewell and autumn's embrace, captured through its weather patterns.

September Precipitation Trends in Ballybunnion

The chart displays monthly precipitation patterns in Ballybunnion, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec851231085765637513391122114139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ballybunnion

In September, Ballybunnion experiences a notable resurgence in humidity levels, returning to 88%, reminiscent of the preceding winter months. The trend throughout the year reveals a gradual decline from an average of 88% in January and February, dipping to a low of 83% in May and June. This slight increase during late summer signals a shift as autumn approaches, where humidity begins to rise again, peaking in October at 91% and continuing to elevate through the fall. The consistency in Ballybunnion's humidity levels not only contributes to its lush landscapes but also enhances the coastal charm of this beautiful Irish town.

September Average Humidity in Ballybunnion

This chart illustrates the average monthly humidity levels in Ballybunnion, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ballybunnion

In September, Ballybunnion's UV Index reflects a pleasant transition towards autumn, registering at a moderate level of 5. This signals a shift from the intense summer rays, where the index peaked at 8 in July and June, necessitating cautious sun exposure with minimal burn times of just 15 minutes. As the season changes, the burn time increases to 30 minutes, allowing for more extended enjoyment of outdoor activities under the softer sun. Notably, this trend of decreasing UV levels persists into October, where it settles at 4, still in the moderate range. As the year progresses, this ebb and flow of UV exposure reminds us to stay mindful of skin protection. For detailed information on UV levels throughout the year, visit Ballybunnion UV Index.

Maximum UV Index Levels in Ballybunnion for September

The chart shows the monthly maximum UV Index (UVI) for Ballybunnion in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124678875421
Data source: Ballybunnion September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Ballybunnion

September in Ballybunnion, Ireland, serves as a beautiful transition from the sun-soaked summer months into the cooler embrace of autumn. With 272 hours of sunshine, it holds its own against the preceding summer, showcasing a commendable glow compared to the brisker winter months ahead. This marks a graceful decline from the peak shine of May and June, which boasted over 350 hours of sunlight. The trend emphasizes that while September is a gentle downswing, it continues to offer ample daylight for outdoor adventures and beach strolls. As the days shorten, the memory of summer lingers, making Ballybunnion a serene spot to bask in the lingering warmth before the hustle of autumn sets in.

Monthly Sunshine Duration in Ballybunnion: September Highlighted

The September sunshine duration represents the total number of hours Ballybunnion experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec76h127h176h291h381h352h353h321h272h216h114h90h
Data source: Ballybunnion September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ballybunnion During September

In Ballybunnion, September brings a subdued likelihood of sunny weather, with just a 16% chance of sunshine gracing the coastal town. This marks a notable decline compared to the vibrant spring months, where April enjoys a cheerful 44% and May still holds a respectable 32%. As summer wanes, the sun’s playful presence retreats further, bringing it down to levels seen in the colder months. Interestingly, the overall trend indicates that while the weather warms up in spring, September heralds the onset of autumn with fewer sun-filled days, as the chance of clear skies approaches year-round lows similar to wintertime averages. For those hoping to bask in sunshine, early autumn may not deliver the warmth and brightness of earlier months.

Percentage of Sunny Days in September in Ballybunnion

The chart illustrates the percentage of sunny days in Ballybunnion throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ballybunnion experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%22%17%44%32%18%24%24%16%18%24%18%
Data source: Ballybunnion September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ballybunnion in September

As summer gracefully transitions into autumn, September in Ballybunnion, Ireland, marks a gentle decline in daylight duration. Following the sun-drenched months of June and July, which bask in 16 hours of daylight, September offers a still generous 12 hours. This period reflects a gradual shift from the bright 15 hours of May, leading into the shorter days of the fall season, as October averages just 10 hours of light. The changing daylight paints a vibrant picture of the year’s progression, inviting residents and visitors alike to savor the last warm rays before the waning hours of winter set in.

Average Daylight Hours in Ballybunnion for September

The chart illustrates the variation in daylight duration in Ballybunnion throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 16m9h 54m11h 54m13h 57m15h 45m16h 42m16h 11m14h 34m12h 36m10h 33m8h 43m7h 45m
Data source: Ballybunnion daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ballybunnion

As summer gives way to autumn, September in Ballybunnion, Ireland, experiences a gentle decline in average wind speed, dipping to 4.0 m/s (9 mph). This drop follows the peak summer months where winds were more tranquil, particularly July, registering the lowest average at 3.4 m/s (8 mph). With the onset of fall, wind speeds gradually begin to pick up again in October and November, suggesting a shift in atmospheric conditions as the season transforms. Overall, September offers a mild breeziness ideal for leisurely coastal strolls, making it a perfect time to appreciate the serene beauty of Ballybunnion before the gusty winds of winter take hold.

Average September Wind Speed in Ballybunnion

The chart displays monthly wind speed patterns in Ballybunnion, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.86.55.34.24.64.23.44.14.0 m/s5.05.15.9
Data source: Ballybunnion September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ballybunnion Compares to Other Months

The weather in Ballybunnion 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 Ballybunnion and find detailed weather information for every month.

September and January present distinctly contrasting weather patterns. In September, temperatures typically range from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average of 14°C (57°F). The month sees a significant amount of rainfall, totaling 91 mm (3.6 in) over about 18 days, while the humidity remains high at 88%.

In contrast, January experiences chillier conditions, with temperatures ranging from -2°C (28°F) to 14°C (58°F) and an average of 7°C (45°F). Precipitation is slightly lower, at 85 mm (3.4 in) across about 15 days, yet the humidity remains constant at 88%. For more detailed insights into January weather, you can check Ballybunnion weather in January.

September and February present contrasting weather patterns. In September, temperatures typically range from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average of 14°C (57°F). This month experiences about 91 mm (3.6 in) of precipitation over approximately 18 days, while maintaining a high humidity level of 88%. Conversely, February is colder, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 15°C (60°F) and an average of 7°C (46°F). This month sees an increase in precipitation, totaling 123 mm (4.8 in) across around 19 days, yet the humidity remains steady at 88%. For a more detailed look at February weather, you can explore Ballybunnion weather in February.

In comparing the weather of September and March, notable differences emerge in both temperature and precipitation. September experiences milder temperatures, ranging from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average temperature of 14°C (57°F). In contrast, March is considerably cooler, with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 17°C (62°F), and an average of only 8°C (46°F). Precipitation levels are also noteworthy; September records 91 mm (3.6 in) over 18 days, while March sees a slightly higher total of 108 mm (4.3 in), also over 18 days. Humidity remains relatively consistent, with September at 88% and March at 87%. For more detailed information, you can visit Ballybunnion weather in March.

September and April showcase distinct weather patterns, reflecting the transition from summer to autumn and the onset of spring, respectively. In September, temperatures range from a cool minimum of 4°C (40°F) to a comfortable maximum of 27°C (80°F), with an average of 14°C (57°F). Precipitation is relatively high, totaling 91 mm (3.6 in) over 18 days, accompanied by a humidity level of 88%. In contrast, April experiences cooler conditions, with temperatures ranging from a minimum of 1°C (34°F) to a maximum of 20°C (68°F), averaging 10°C (49°F). This month also sees less rainfall at 57 mm (2.2 in) across 13 days and a slightly lower humidity of 86%. For a closer look at the April weather specifics in Ballybunnion, you can visit Ballybunnion weather in April.

When comparing the weather in September and May, one can notice distinct differences in temperature and precipitation. September experiences a wider temperature range, with a minimum of 4°C (40°F) and a maximum of 27°C (80°F), averaging around 14°C (57°F). In contrast, May is slightly cooler, with temperatures ranging from 2°C (36°F) to a maximum of 23°C (74°F) and an average of 12°C (53°F). Precipitation is more frequent in September, totaling 91 mm (3.6 in) over 18 days, while May sees less rain at 65 mm (2.6 in) across 14 days. Humidity is also higher in September at 88%, compared to May's 83%. For a closer look at May weather patterns, check out Ballybunnion weather in May.

When comparing the weather in September to that of June, notable differences emerge. September experiences slightly cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 27°C (80°F) compared to June's minimum of 7°C (45°F) and maximum of 29°C (84°F). While both months share an average temperature of 14°C (57°F), September is wetter, receiving 91 mm (3.6 in) of precipitation over 18 days, whereas June sees just 63 mm (2.5 in) over 15 days. Humidity levels are also higher in September, averaging 88%, compared to June's 83%. For a detailed look at June conditions, you can visit Ballybunnion weather in June.

In comparing the weather of September and July, we see notable differences in temperature and precipitation. September experiences a wider range in temperatures, with a minimum of 4°C (40°F) and a maximum of 27°C (80°F), resulting in an average of 14°C (57°F). This month also has higher precipitation, totaling 91 mm (3.6 in) over 18 days, and a humidity level of 88%. In contrast, July features milder temperatures, with a minimum of 9°C (48°F) and a maximum of 28°C (84°F), leading to an average of 16°C (60°F). Additionally, it sees less precipitation at 75 mm (3.0 in) across 14 days and slightly lower humidity at 85%. For more details on July weather, you can visit Ballybunnion weather in July.

In comparing the weather of September to that of August, September experiences a wider temperature range, with minimums dipping to 4°C (40°F) and maximums reaching 27°C (80°F), compared to August's milder minimum of 8°C (47°F) and maximum of 23°C (74°F). While both months see significant rainfall, September has a lower total precipitation of 91 mm (3.6 in) over 18 days, whereas August records higher rainfall at 133 mm (5.2 in) across 21 days. Additionally, humidity levels remain slightly higher in September at 88%, compared to 85% in August. For more detailed insights, check out Ballybunnion weather in August.

In comparing the weather between September and October, we can see a noticeable shift in temperature and precipitation patterns. September tends to be warmer, with average temperatures ranging from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), while October cools down with minimums of 3°C (37°F) and a maximum of 19°C (66°F).

Precipitation also increases slightly in October, with total rainfall reaching 122 mm (4.8 in) over 19 days compared to September's 91 mm (3.6 in) over 18 days. Additionally, humidity levels rise slightly in October to 91% from September's 88%. For more detailed insights specifically about October weather, you can check Ballybunnion weather in October.

In comparing the weather between September and November, September offers a more temperate climate with average temperatures reaching up to 14°C (57°F) and a maximum of 27°C (80°F). It also has a lower precipitation level of 91 mm (3.6 in) over 18 days, accompanied by a humidity rate of 88%. In contrast, November brings a notable shift, with average temperatures dropping to 9°C (49°F) and a maximum of only 15°C (60°F). The precipitation increases to 113 mm (4.5 in) across 19 days, and humidity rises slightly to 92%. This stark difference between the two months highlights the transition from the late warmth of autumn to the cooler, wetter conditions of late fall. For more detailed information on November weather, visit Ballybunnion weather in November.

September and December present quite a contrast in weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 27°C (80°F), with an average of 14°C (57°F). The month sees around 91 mm (3.6 in) of precipitation over 18 days, while humidity remains high at 88%. In contrast, December offers chillier conditions, where temperatures drop with a minimum of 0°C (33°F) and a maximum of 14°C (57°F), resulting in an average of 8°C (47°F). Additionally, December experiences more rainfall, with 139 mm (5.5 in) spread across 20 days, and humidity slightly increases to 89%. For more detailed insights, check out Ballybunnion weather in December.

Compare Ballybunnion's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ballybunnion

As summer transitions to autumn, September in Ballybunnion reveals a unique blend of weather characteristics that sets it apart from the preceding months. With maximum temperatures still reaching a pleasant 27°C, it beckons the final days of warmth, yet the average temperature drops significantly to 14°C, hinting at the cooler days ahead. Frequent precipitation—recorded on 18 days—accompanied by elevated humidity levels of 88%, creates a distinctive climate that can be both refreshing and unpredictable. This juxtaposition of lingering warmth and emerging chill makes September a fascinating month to experience the charm of Ballybunnion. For more insights into the weather patterns you can expect throughout the year, don't miss our detailed page on Ballybunnion Climate.