September Weather in Dungarvan, Ireland

Last updated: March 17, 2025

September in Dungarvan, Ireland brings a pleasant mix of weather conditions, with maximum temperatures reaching a comfortable 21°C (71°F) and an average of 14°C (58°F). As autumn approaches, minimum temperatures can dip to around 6°C (42°F), creating a refreshing atmosphere. However, visitors should be prepared for a bit of rain, as the month averages 77 mm (3.0 in) of precipitation over approximately 12 days. The humidity levels hover around a high 85%, contributing to the lush green landscape that characterizes this charming coastal town. Overall, September offers a vibrant yet unpredictable weather experience, perfect for exploring the natural beauty of Dungarvan.

September Temperature in Dungarvan

As September rolls into Dungarvan, a gentle shift in temperatures marks the transition from summer to autumn. The minimum temperature settles around 6°C (42°F), providing a crisp yet mild backdrop for the beginning of fall, while average temperatures hover at a comfortable 14°C (58°F). This month typically boasts a maximum of 21°C (71°F), still reminiscent of the warmer months. The trend showcases a gradual coolness, with evenings feeling particularly refreshing. Compared to the heights of summer, September serves as a delightful interlude, where the warmth begins to wane, offering an inviting atmosphere for locals and visitors alike to explore the charm of Dungarvan.

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

The chart illustrates September temperature patterns in Dungarvan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454545485257616057534846
Data source: Temperature data for Dungarvan 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 Dungarvan

In September, Dungarvan experiences moderate precipitation, with 77 mm (3.0 in) of rain typically falling over about 12 days. This pattern marks a slight increase compared to the drier summer months, reflecting the transition into autumn. Following the substantial rains of August, which saw 101 mm (4.0 in), September's precipitation serves as a precursor to the wetter months ahead, as both October and November frequently top 120 mm. The consistent rainfall during this period underscores the region's shift toward a more humid climate, setting the stage for the lush landscapes that characterize the Irish countryside.

September Precipitation Trends in Dungarvan

The chart displays monthly precipitation patterns in Dungarvan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec69122967671666610177121124133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dungarvan

As summer transitions into autumn, September in Dungarvan maintains a notable humidity level of 85%, aligning closely with the consistent patterns observed throughout the warmer months. This slight rise reflects a prevalent trend, as humidity remains relatively stable, fluctuating only modestly from 83% in January to a peak of 86% in October. The prevailing humidity levels during this period indicate a dampness that characterizes the region’s climate, fostering rich green landscapes and a refreshing atmosphere. Overall, while September continues to embrace the moisture of summer, it gently ushers in the cooler, crisp air of autumn—a unique blend that defines Dungarvan's charm.

September Average Humidity in Dungarvan

This chart illustrates the average monthly humidity levels in Dungarvan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%84%84%84%85%85%84%85%86%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dungarvan

As summer transitions into autumn, September in Dungarvan, Ireland, brings a moderate UV Index of 5. This marks a shift from the previous months, where the index peaked at 8 during the height of summer, indicating a change in sun intensity and a longer burn time of 30 minutes. With the UV exposure category reverting to moderate, residents and visitors are still encouraged to take precautions, particularly for extended outdoor activities. Compared to earlier months, this September offers a sweet spot where sunlight is enjoyable but still warrants a little attentiveness to skin safety. For more detailed information on the UV trends throughout the year, check out the Dungarvan UV Index.

Maximum UV Index Levels in Dungarvan for September

The chart shows the monthly maximum UV Index (UVI) for Dungarvan 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Dungarvan 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 Dungarvan

As summer fades, September in Dungarvan continues to bask in a generous amount of sunshine, offering an inviting 308 hours of bright daylight. This marks a gentle decline from the sun-soaked months of July and August, which boast some of the highest sunshine totals of the year at 409 and 364 hours, respectively. The transition into autumn is evident as daylight starts to wane, but with September still showcasing a robust amount of sunshine, it provides a perfect opportunity for outdoor adventures and lingering warm evenings. Following this golden month, October heralds a more significant drop, plunging to just 243 hours, signaling that the charm of autumn is on the horizon.

Monthly Sunshine Duration in Dungarvan: September Highlighted

The September sunshine duration represents the total number of hours Dungarvan 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.
JanFebMarAprMayJunJulAugSepOctNovDec95h148h208h316h401h397h409h364h308h243h136h109h
Data source: Dungarvan September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dungarvan During September

In September, Dungarvan experiences a modest likelihood of sunny weather, with only a 22% chance of sunshine. This percentage is on par with the colder months like January and August, reflecting a gradual decline in sunny days as summer wanes. Interestingly, the transition from summer to autumn typically brings lower chances of sunshine, as seen in the dip from 48% in April to just 20% in October. Therefore, while September may still offer some pleasant days, it’s wise to prepare for the cloudy shifts that mark the onset of autumn in this charming Irish town.

Percentage of Sunny Days in September in Dungarvan

The chart illustrates the percentage of sunny days in Dungarvan 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 Dungarvan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec32%23%24%48%33%26%30%29%22%21%31%22%
Data source: Dungarvan September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dungarvan in September

As summer gracefully transitions into autumn, September in Dungarvan, Ireland, offers a delightful 12 hours of daylight. This month sees a gentle decline from the sun-soaked heights of June and July, which bask in 16 hours of daylight, symbolizing the peak of summer. As we move forward, daylight diminishes further, tapering to 10 hours in October and dipping to 8 hours by November. This gradual shift highlights the rhythm of the seasons—where the vibrant energy of summer gives way to the softer, more introspective days of fall. September serves as a reminder of nature’s cyclical beauty, striking a balance between the lingering warmth of summer and the cool embrace of the impending autumn.

Average Daylight Hours in Dungarvan for September

The chart illustrates the variation in daylight duration in Dungarvan throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 20m9h 56m11h 55m13h 56m15h 41m16h 37m16h 7m14h 32m12h 35m10h 35m8h 47m7h 49m
Data source: Dungarvan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Dungarvan

In Dungarvan, Ireland, September ushers in a gentle breeze, with average wind speeds settling at 3.9 m/s (9 mph). This marks a notable dip in comparison to the breezier summer months, where July and August recorded slightly higher speeds of 3.6 m/s (8 mph) and 4.3 m/s (10 mph), respectively. As autumn approaches, the wind begins to pick up again in October, climbing to 5.4 m/s (12 mph). Overall, September serves as a bridge between the calms of summer and the invigorating gusts of fall, inviting locals and visitors alike to enjoy the crisp air and scenic coastal views as the landscape transforms.

Average September Wind Speed in Dungarvan

The chart displays monthly wind speed patterns in Dungarvan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.27.35.24.14.94.13.64.33.9 m/s5.44.86.0
Data source: Dungarvan September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Dungarvan Compares to Other Months

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

In September, the weather in Dungarvan is relatively mild, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 21°C (71°F), and an average of 14°C (58°F). The month sees about 77 mm (3.0 in) of precipitation over 12 days, accompanied by high humidity at 85%. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -1°C (30°F) and peaking at 13°C (56°F), leading to an average of 7°C (45°F). Precipitation is slightly lower at 69 mm (2.7 in), also spread over 12 days, but humidity remains similar at 83%. For a more detailed look at January weather, you can check this link: Dungarvan weather in January.

In September, the weather tends to be milder with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 21°C (71°F). This month experiences approximately 77 mm (3.0 in) of precipitation over about 12 days, maintaining a consistent humidity level of 85%. In contrast, February is notably cooler, with average temperatures peaking at 13°C (56°F) and dipping to 0°C (32°F). It is also wetter, recording around 122 mm (4.8 in) of precipitation spread across 17 days, while humidity remains constant at 85%. For a deeper dive into the specifics of February weather, check out Dungarvan weather in February.

September and March present distinctly different weather patterns. In September, temperatures range from a minimum of 6°C (42°F) to a maximum of 21°C (71°F), with an average of 14°C (58°F). This month experiences around 77 mm (3.0 in) of precipitation over approximately 12 days, accompanied by a relatively high humidity of 85%. In contrast, March is colder, with temperatures ranging from -4°C (25°F) to a maximum of 14°C (57°F), averaging at 7°C (46°F). Precipitation is slightly higher at 96 mm (3.8 in) over about 15 days, with a humidity level of 84%. For more detailed insights into the weather during this month, you can check Dungarvan weather in March.

When comparing the weather in September to that in April, several key differences stand out. September generally enjoys milder temperatures, with an average of 14°C (58°F) and a maximum of 21°C (71°F), while April experiences cooler conditions, averaging around 9°C (48°F) and peaking at 16°C (62°F). In terms of precipitation, both months are relatively similar, receiving about 76-77 mm (3.0 in), with September seeing rain on approximately 12 days compared to April's 11 days. Humidity levels are also comparable, with September at 85% and April slightly lower at 84%. For a more in-depth look at April weather, visit Dungarvan weather in April.

When comparing the weather in September and May, both months exhibit mild temperatures and a similar amount of rainfall. September generally enjoys slightly warmer conditions with average temperatures ranging from 6°C (42°F) to 21°C (71°F), compared to May's temperatures of 3°C (38°F) to 20°C (68°F). Precipitation levels are also comparable, with September receiving 77 mm (3.0 in) over 12 days and May getting 71 mm (2.8 in) across the same number of days. Humidity levels remain high in both months, with September at 85% and May at 84%. For more specific insights, you can check the detailed Dungarvan weather in May.

When comparing the weather in September and June, both months show similar average temperatures, hovering around 14°C (58°F). However, September typically experiences a slightly wider temperature range, with maximums reaching 21°C (71°F), compared to June's peak of 23°C (74°F). Precipitation levels are higher in September, totaling 77 mm (3.0 in) over 12 days, whereas June sees 66 mm (2.6 in) across the same number of days. Additionally, both months share the same humidity level of 85%, contributing to a feeling of moisture in the air. For a detailed overview of June weather, you can check Dungarvan weather in June.

When comparing the weather in September to that in July, we see some notable differences. September tends to be cooler, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 21°C (71°F), whereas July experiences slightly warmer conditions, with temperatures from 9°C (49°F) to 24°C (76°F). Additionally, September brings more precipitation, totaling 77 mm (3.0 in) over 12 days, compared to July's 66 mm (2.6 in) during the same number of days. Both months share a high humidity level of 85%, contributing to a similar feeling of dampness, but July remains the warmer of the two months overall. For more detailed insights, you can check out Dungarvan weather in July.

In comparing the weather patterns of September and August, we can observe a notable shift in temperatures and precipitation. September brings cooler temperatures, with a minimum of 6°C (42°F) and an average of 14°C (58°F), while August's minimum is slightly warmer at 8°C (48°F) and averages around 16°C (60°F). Additionally, September experiences a maximum of 21°C (71°F), which is just below August's peak of 23°C (73°F). Precipitation also decreases in September, with 77 mm (3.0 in) over 12 days compared to August's 101 mm (4.0 in) across 14 days. Despite a slight increase in humidity to 85% in September, it remains relatively close to August's 84%. For more insight into August weather specifics, you can explore the link: Dungarvan weather in August.

September typically offers milder conditions with an average temperature of 14°C (58°F) and maximum highs around 21°C (71°F). However, as the month transitions to October, temperatures drop, reaching an average of 12°C (53°F) with a maximum of just 17°C (64°F). Additionally, October experiences increased precipitation, with 121 mm (4.8 in) over roughly 15 days compared to September's 77 mm (3.0 in) over 12 days. Both months feature high humidity levels, but October sees a slight rise to 86%. For more detailed information on the weather in October, you can check Dungarvan weather in October.

In September, the weather tends to be milder, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 21°C (71°F), while November brings cooler temperatures, with averages from 2°C (35°F) to a maximum of 15°C (59°F). September also typically sees less rainfall, averaging 77 mm (3.0 inches) over about 12 days, compared to November, which experiences increased precipitation of 124 mm (4.9 inches) over 17 days. Humidity levels remain quite similar, with September at 85% and November slightly lower at 84%. For more detailed insights, check out Dungarvan weather in November.

September and December showcase distinct differences in weather patterns. September typically sees milder temperatures, ranging from a low of 6°C (42°F) to a high of 21°C (71°F), with an average of 14°C (58°F). This month experiences about 77 mm (3.0 in) of precipitation over 12 days, along with relatively high humidity at 85%. In contrast, December presents cooler conditions, with temperatures dropping to a minimum of 0°C (32°F) and only reaching a maximum of 13°C (56°F), averaging 8°C (46°F). Precipitation increases to 133 mm (5.2 in) across 17 days, while humidity remains slightly lower at 83%. For more details about December weather in Dungarvan, you can check Dungarvan weather in December.

Compare Dungarvan's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Dungarvan

As September unfolds in Dungarvan, the weather presents a unique transition from the warmth of summer to the crispness of autumn. With temperatures averaging a mild 14°C (58°F), the month is characterized by its increasing humidity and occasional rainfall, which can amount to about 77 mm over roughly 12 days. This shift not only offers a refreshing change but also invites residents and visitors alike to enjoy the natural beauty of the region as it prepares for the coming season. For a deeper dive into what to expect from Dungarvan’s climate throughout the year, check out Dungarvan Climate.