September Weather in Ballina, Ireland

Last updated: March 17, 2025

September in Ballina, Ireland presents a fascinating blend of weather patterns, where temperatures range from a comfortable maximum of 24°C (76°F) to a crisp minimum of 2°C (36°F), with an average hovering around 13°C (55°F). The month is characterized by frequent rainfall, accumulating around 94 mm (3.7 in) over 18 days, while the humidity remains notably high at 88%, creating a lush, vibrant atmosphere. Whether you're exploring the scenic landscapes or enjoying cozy indoor activities, September's mix of mild warmth and refreshing showers offers a unique experience in this charming Irish town.

September Temperature in Ballina

In Ballina, Ireland, September heralds a transition into autumn with temperatures that reflect the changing season. As summer wanes, the average temperature settles around 13°C (55°F), providing a pleasant climate for outdoor exploration. Early in the month, the highs can still reach a comfortable 24°C (76°F), making it ideal for enjoying the lingering warmth of late summer. However, as the month progresses, temperatures drop, with nighttime lows falling to around 2°C (36°F). This notable shift marks the beginning of cooler days, yet September remains relatively mild compared to the chillier months that follow, offering a beautiful backdrop of vibrant autumn hues in and around Ballina.

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

The chart illustrates September temperature patterns in Ballina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434344475256595855504644
Data source: Temperature data for Ballina generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ballina

September in Ballina, Ireland, sees an average precipitation of 94 mm (3.7 in) over 18 days, making it a month characterized by frequent showers yet slightly lower rainfall than the preceding August, which recorded a notably high 149 mm (5.9 in). This pattern may suggest a gradual transition towards the drier months, as precipitation steadily tapers off into autumn. Interestingly, while September's rainfall is substantial, it remains consistent with the overall trend of the preceding months, where summer’s peak usually brings more rain. Looking ahead, October tends to ramp up again with 129 mm (5.1 in) anticipated, signaling that while September may offer a brief respite, Ballina’s lush, verdant landscape remains reliant on its plentiful rains throughout the fall.

September Precipitation Trends in Ballina

The chart displays monthly precipitation patterns in Ballina, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8813111366799310014994129111119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ballina

In September, Ballina, Ireland, experiences a notable shift as humidity levels rise to 88%, reflecting a return to values typical of the earlier months in the year. This uptick aligns with the gradual transition from summer to autumn, where long, humid days give way to cooler evenings. Compared to the drier spell in late spring and early summer, when humidity dipped to 83%, September’s moisture levels serve as a reminder of the maritime climate that characterizes this picturesque region. As the year progresses, humidity peaks again in the autumn months, reaching 91% in October, highlighting the persistent dampness that beckons the lush landscapes for which Ireland is renowned.

September Average Humidity in Ballina

This chart illustrates the average monthly humidity levels in Ballina, 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 Ballina

As September unfolds in Ballina, Ireland, the UV Index reflects a transition toward moderate exposure, registering at 5. This is a noticeable shift from the higher levels experienced during the summer months, where indices hovered around 7 to 8. With a burn time of 30 minutes, it's essential to remain vigilant during outdoor activities, especially as the sun's intensity begins to wane. This month marks a gradual cooldown, making it a precautionary period for skin safety, yet still offering ample opportunity for enjoyment in the lingering sunshine. For more detailed information, check out Ballina UV Index.

Maximum UV Index Levels in Ballina for September

The chart shows the monthly maximum UV Index (UVI) for Ballina 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Ballina 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 Ballina

As summer gracefully transforms into autumn, Ballina, Ireland, basks in a lovely stretch of sunshine throughout September. The month offers a generous 282 hours of sunlight, contributing to a radiant close of the season. This is a noticeable decline from the sun-drenched days of May, which enjoyed the highest sunshine at 395 hours, but still significantly outshines the dreary winter months. Notably, the transitioning patterns reveal a steady decrease in daylight from the peak summer months, signaling the impending cozy charm of fall. With October's forecasted hours dropping to 219, September serves as a poignant reminder of summer's lingering embrace, encouraging outdoor adventures in the mild, golden light before the deeper chill sets in.

Monthly Sunshine Duration in Ballina: September Highlighted

The September sunshine duration represents the total number of hours Ballina 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.
JanFebMarAprMayJunJulAugSepOctNovDec70h137h183h310h395h371h374h330h282h219h112h87h
Data source: Ballina September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ballina During September

In Ballina, September brings a modest 14% chance of sunny weather, reflecting a trend common to the late summer months. As the vibrant hues of late summer begin to fade, sunshine becomes a bit more elusive, comparable to the preceding July and August figures, which hover around 18% and 21%, respectively. While the likelihood of bright, sunny days dips, a glance at the annual data highlights that this is a typical transition into autumn, with clear skies becoming rarer as the year progresses. For those hoping to bask in a few golden rays before the colder months arrive, September's weather offers a gentle reminder to embrace the fleeting moments of sunshine.

Percentage of Sunny Days in September in Ballina

The chart illustrates the percentage of sunny days in Ballina 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 Ballina experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%19%14%39%34%14%21%18%14%17%19%14%
Data source: Ballina September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ballina in September

As summer fades into autumn, September in Ballina, Ireland experiences a gradual decrease in daylight, offering around 12 hours of sunlight each day. This marks a notable transition from the longer days of summer, where June boasts a peak of 17 hours. The trend showcases a steady decline as the days grow shorter, with daylight dipping to 10 hours by October and further reducing to just 8 hours by November. This rhythmic shift not only signals the changing seasons but also invites a cozy atmosphere, perfect for embracing the warmth of early autumn. The interplay of light and shadow paints Ballina's landscape in softer hues, enhancing the charm of this picturesque town as it welcomes the crisp air of fall.

Average Daylight Hours in Ballina for September

The chart illustrates the variation in daylight duration in Ballina throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h9h 45m11h 54m14h 5m16h 1m17h 3m16h 30m14h 45m12h 38m10h 27m8h 29m7h 26m
Data source: Ballina daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ballina

In Ballina, Ireland, September heralds the gentle whisper of autumn with an average wind speed of 3.4 m/s (8 mph), mirroring the calmer breezes of August. As summer winds down, the air brings a subtle shift—less vigorous and more tranquil than the gusty months of February and November, which peak at 5.6 m/s (13 mph) and 4.5 m/s (10 mph) respectively. This month’s breezy embrace feels consistent with the lighter currents of late spring and early summer. As nature prepares for the cooler months ahead, September presents a soothing transition, inviting locals and visitors alike to enjoy its serene atmospheric charm.

Average September Wind Speed in Ballina

The chart displays monthly wind speed patterns in Ballina, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.75.64.73.63.93.92.63.43.4 m/s4.34.54.8
Data source: Ballina September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ballina Compares to Other Months

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

In September, temperatures begin to transition from the warmth of summer, with a minimum of 2°C (36°F), an average of 13°C (55°F), and a maximum of 24°C (76°F). The month sees an average precipitation of 94 mm (3.7 in) over 18 days, coupled with a high humidity level of 88%. In contrast, January experiences cooler conditions, with temperatures ranging from a minimum of -4°C (26°F) to a maximum of 13°C (57°F) and an average of 6°C (43°F). Precipitation is slightly lower at 87 mm (3.4 in) over 15 days, while humidity remains constant at 88%. For more detailed information on the January weather, check out Ballina weather in January.

September and February present notable differences in weather patterns. In September, temperatures range from a low of 2°C (36°F) to a pleasant average of 13°C (55°F), reaching a maximum of 24°C (76°F), while February sees colder conditions with temperatures dipping to a minimum of -4°C (25°F) and an average of 6°C (43°F), peaking at 15°C (59°F). Additionally, February experiences higher precipitation levels with 131 mm (5.1 in) over 18 days compared to September’s 94 mm (3.7 in) across the same number of days. Both months have similar humidity levels at 88%, but the overall feel of the weather is vastly different with September's warmth versus February's chill. For more details on February weather, visit Ballina weather in February.

In comparing the weather of September and March, September tends to be milder with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 24°C (76°F), while March experiences colder conditions, seeing temperatures drop as low as -5°C (24°F) and peaking at 17°C (62°F). Both months witness a relatively high number of rainy days, with September receiving about 94 mm (3.7 in) of precipitation across 18 days and March slightly wetter with 113 mm (4.5 in) also over 18 days. Humidity levels are quite similar in both months, hovering around 88% in September and 87% in March. For more detailed weather information specific to March, you can check out Ballina weather in March.

In comparing the weather of September and April, September typically experiences a warmer climate with average temperatures ranging from 13°C (55°F) to a maximum of 24°C (76°F), contrasted with April's cooler range of -2°C (29°F) to 20°C (69°F). While both months see a fair amount of precipitation, September is wetter, receiving 94 mm (3.7 in) over 18 days, compared to April's 66 mm (2.6 in) across 12 days. Despite similar humidity levels, at 88% in September and 86% in April, the overall milder temperatures in September make it feel more pleasant. For a closer look at what to expect during this time, check out Ballina weather in April.

September and May exhibit distinct weather characteristics, with September generally being warmer and slightly more humid. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 24°C (76°F), with an average of 13°C (55°F) and a higher humidity level of 88%. In contrast, May experiences cooler temperatures, starting at -1°C (30°F) and reaching up to 25°C (77°F), with an average of 11°C (52°F) and a humidity of 83%. Additionally, September receives more rainfall, totaling 94 mm (3.7 in) over 18 days, compared to May's 79 mm (3.1 in) over 15 days. For more detailed information on May weather, you can visit Ballina weather in May.

September and June exhibit similar average temperatures, with both months hovering around 13°C (55°F). However, September tends to be cooler overall, featuring a minimum temperature of 2°C (36°F) compared to June's minimum of 4°C (40°F). In terms of maximum temperatures, June is warmer, reaching up to 28°C (83°F), while September's peak is 24°C (76°F). Both months experience comparable levels of precipitation, with September accounting for 94 mm (3.7 in) over 18 days, just slightly more than June's 93 mm (3.7 in) over 17 days. Additionally, September is generally more humid, boasting an 88% humidity level compared to June's 83%. For more detailed information about June weather, check out Ballina weather in June.

When comparing the weather in September to that of July, notable differences emerge. September experiences cooler temperatures, ranging from a minimum of 2°C (36°F) to a maximum of 24°C (76°F), with an average of 13°C (55°F). In contrast, July boasts warmer temperatures, with a minimum of 7°C (44°F), an average of 15°C (59°F), and a maximum of 28°C (83°F). Both months have similar precipitation levels, with September recording 94 mm (3.7 in) and July slightly higher at 100 mm (3.9 in), though September has more rainy days at 18 compared to July's 17. Humidity levels are also slightly higher in September at 88%, compared to July's 85%. For a closer look at July's weather, you can check this link: Ballina weather in July.

In comparing the weather between August and September, September generally presents cooler temperatures, with a minimum of 2°C (36°F) and an average of 13°C (55°F), compared to August's milder minimum of 5°C (42°F) and average of 15°C (58°F). Although September has slightly higher maximum temperatures at 24°C (76°F) compared to August's 23°C (74°F), it experiences more rainfall, totaling 94 mm (3.7 in) over 18 days, whereas August sees 149 mm (5.9 in) across 22 days. The humidity levels also rise slightly in September, peaking at 88% compared to August's 85%. For more details, check out Ballina weather in August.

September and October bring noticeable changes in weather patterns. September typically experiences a minimum temperature of around 2°C (36°F) and an average of 13°C (55°F), peaking at a pleasant 24°C (76°F). However, it sees quite a bit of rainfall, with 94 mm (3.7 in) falling over 18 days, coupled with a high humidity of 88%. In contrast, October sees slightly cooler temperatures, with a minimum of 1°C (33°F) and an average of 10°C (51°F), as well as a maximum temperature of 20°C (68°F). The month is wetter, with precipitation rising to 129 mm (5.1 in) over 20 days and humidity increasing to 91%. For more detailed insights into October's weather, check out Ballina weather in October.

In September, the weather generally offers milder temperatures, with averages around 13°C (55°F) and daytime highs reaching up to 24°C (76°F). The month is characterized by relatively high humidity at 88% and about 94 mm (3.7 in) of precipitation over 18 days. In contrast, November sees a significant drop in temperatures, averaging around 8°C (46°F), with maximums only reaching 15°C (59°F). Precipitation increases slightly to 111 mm (4.4 in) spread across 19 days, along with a slight rise in humidity to 92%. For more detailed information, check out Ballina weather in November.

September and December present distinct contrasts in weather, with September showcasing milder temperatures ranging from a minimum of 2°C (36°F) to a comfortable maximum of 24°C (76°F) and an average of 13°C (55°F). The month experiences 94 mm (3.7 in) of precipitation over 18 days, accompanied by a humidity of 88%. In contrast, December sees colder temperatures, with lows reaching -2°C (29°F) and an average of 7°C (44°F), peaking at just 13°C (55°F). Precipitation increases to 119 mm (4.7 in) spread over 21 days, and humidity remains relatively high at 89%. For more detailed insights into the weather during this month, you can check Ballina weather in December.

Compare Ballina's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ballina

As September unfolds in Ballina, the weather exhibits a notable shift from the warmth of summer, ushering in cooler temperatures and increased humidity. While daytime highs reach a comfortable 24°C (76°F), the evenings can feel brisk with lows dipping to 2°C (36°F). This month also sees a significant increase in precipitation, with nearly half the days experiencing rain, resulting in a lush and vibrant landscape. The elevated humidity at 88% contributes to the fresh and crisp air, marking a distinct transition to autumn. For a deeper dive into seasonal patterns, visit Ballina Climate.