September Weather in Drogheda, Ireland

Last updated: March 17, 2025

September in Drogheda, Ireland offers a mild climate as temperatures range from a pleasant 22°C (72°F) at their highest to a cooler 4°C (39°F) at night. The average temperature hovers around 14°C (57°F), providing a comfortable environment for outdoor activities. However, visitors should prepare for frequent rain, with about 71 mm (2.8 in) of precipitation across 12 days, contributing to the region's lush greenery. Humidity levels rise to a notable 86%, making the air feel crisp yet invigorating. Whether you're exploring the historic sites or enjoying nature, September in Drogheda offers a unique blend of Irish charm and ever-changing weather.

September Temperature in Drogheda

In September, Drogheda experiences a gentle transition from the warm summer months to the cooler autumn season. With temperatures ranging from a minimum of 4°C (39°F) to a pleasant maximum of 22°C (72°F), the month showcases a comfortable average of 14°C (57°F), ideal for outdoor activities. This gradual drop in temperature marks a notable shift, especially when compared to the heights of summer, while still providing the opportunity to enjoy lingering warmth. As daylight hours begin to wane and the leaves start to change, September offers a delightful blend of mild weather that beckons both locals and visitors to explore the scenic beauty of the region.

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

The chart illustrates September temperature patterns in Drogheda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434445485359626057524744
Data source: Temperature data for Drogheda 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 Drogheda

In September, Drogheda experiences a notable transition in weather patterns, marked by 71 mm (or 2.8 in) of precipitation over approximately 12 days. This amount is slightly lower than August's peak of 101 mm (4.0 in), indicating a gradual easing of summer rainfall. Despite this reduction, September remains relatively wet, continuing the trend of consistent moisture seen through the late summer months. The frequency of rainy days holds steady, resembling the preceding months, which suggests a typical Irish autumn beginning to set in. This blend of moderate rainfall and dwindling summer warmth sets the stage for the cooler, wetter months ahead.

September Precipitation Trends in Drogheda

The chart displays monthly precipitation patterns in Drogheda, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5276764258697310171808988
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Drogheda

September in Drogheda, Ireland, marks a slight uptick in humidity, reaching 86%, consistent with the summer's levels. This month follows August's stable humidity of 85% and reflects a broader trend where the early autumn months maintain similar moisture levels to their summer predecessors. Interestingly, this high humidity persists into October, which sees an even higher average of 87%. Overall, as the year progresses towards winter, the humidity remains relatively stable, fluctuating between 83% and 87%. Such stability hints at Drogheda's temperate climate, where moisture is a constant companion throughout the seasons.

September Average Humidity in Drogheda

This chart illustrates the average monthly humidity levels in Drogheda, 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.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Drogheda

As September rolls into Drogheda, Ireland, the UV Index settles at 5, indicating a moderate exposure category with a burn time of 30 minutes for fair-skinned individuals. This marks a slight decline from the summer months when the index peaked at 8 in both June and July, prompting a need for heightened sun protection. While the intensity of sunlight begins to wane with the arrival of autumn, September still requires awareness, especially for outdoor activities during midday. The overall trend showcases a gradual easing of UV rays as the seasons change, yet it's essential to remain vigilant, as the sun can still pose risks. For more detailed information, check out Drogheda UV Index.

Maximum UV Index Levels in Drogheda for September

The chart shows the monthly maximum UV Index (UVI) for Drogheda 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: Drogheda 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 Drogheda

In Drogheda, Ireland, September brings a delightful retreat from the peak summer sun, offering approximately 288 hours of daylight. This marks a gradual decline from August's abundant 329 hours, echoing the subtle transition into autumn. The previous months showcase a remarkable surge in sunshine hours, peaking in May with 385 hours, indicating a vibrant spring. As summer fades, September maintains a generous supply of light, reflecting a sense of lingering warmth before the shorter days of fall take hold. As we move towards October’s 226 hours, the gradual shift reminds us of nature's rhythmic patterns and the impending cooler months ahead.

Monthly Sunshine Duration in Drogheda: September Highlighted

The September sunshine duration represents the total number of hours Drogheda 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.
JanFebMarAprMayJunJulAugSepOctNovDec80h145h190h308h385h379h377h329h288h226h114h91h
Data source: Drogheda September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Drogheda During September

In September, Drogheda experiences a 21% chance of sunny weather, a figure that mirrors the relatively overcast summers the region typically endures. As the longest days of summer fade, sunshine begins to dwindle, echoing the trends seen from January to August. Interestingly, while autumn approaches with hope for clearer skies, April emerges as a standout month, boasting the highest likelihood of sun at 43%. In contrast, the early fall months like September and October maintain a consistent low percentage of sunshine, hinting at the gradual transition to colder, cloudier conditions. As such, those planning outdoor activities in Drogheda during September should prepare for the possibility of unpredictable weather, embracing the chance of an elusive sunny day.

Percentage of Sunny Days in September in Drogheda

The chart illustrates the percentage of sunny days in Drogheda 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 Drogheda experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%21%21%43%35%22%29%23%21%20%25%20%
Data source: Drogheda September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Drogheda in September

As summer fades, September in Drogheda, Ireland, ushers in a shift in daylight, offering an inviting 12 hours of sunshine. This month stands as a gentle transition, bridging the extended daylight of June and July, when the sun graces the skies for a remarkable 16 hours, and the earlier autumn days, which soon bring a dip in light. Following the vibrant summer, September's daylight still retains a warmth, balancing between the lush brightness of late August's 14 hours and the forthcoming shorter autumn days. As nature prepares for the shift into darker months, residents can relish these long, golden evenings—an ideal time for leisurely strolls and enjoying the last whispers of summer.

Average Daylight Hours in Drogheda for September

The chart illustrates the variation in daylight duration in Drogheda throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 3m9h 47m11h 54m14h 3m15h 58m16h 58m16h 26m14h 43m12h 37m10h 29m8h 32m7h 30m
Data source: Drogheda daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Drogheda

As September arrives in Drogheda, Ireland, the winds begin to whisper a gentle shift in the season. With an average speed of 3.7 m/s (8 mph), the breezes are slightly brisker than the calm of summer, echoing a subtle transition toward autumn. Notably, the wind patterns reflect a dynamic seasonal ebb and flow; after a dip in the summer months with July's lightest winds at 2.9 m/s (6 mph), September brings a refreshing breath, reminiscent of the steadier currents of earlier months like February and November. As the landscape prepares for the vibrant hues of fall, the September winds weave a tapestry of change, inviting residents and visitors alike to experience the charm of Drogheda in transition.

Average September Wind Speed in Drogheda

The chart displays monthly wind speed patterns in Drogheda, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.76.14.93.64.03.92.93.63.7 m/s4.95.15.1
Data source: Drogheda September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Drogheda Compares to Other Months

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

In September, temperatures range from a chilly 4°C (39°F) at night to a pleasant 22°C (72°F) during the day, with an average of 14°C (57°F). The month sees about 71 mm (2.8 in) of rainfall over approximately 12 days, and the humidity is relatively high at 86%. In contrast, January experiences colder conditions, with temperatures dipping as low as -3°C (27°F) at night and peaking at 14°C (58°F) during the day, resulting in an average of 6°C (43°F). While precipitation in January is slightly lower at 52 mm (2.0 in), it occurs over about 9 days, and the humidity remains comparable at 85%. For more details on January weather, you can visit Drogheda weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a comfortable minimum of 4°C (39°F) to a pleasant maximum of 22°C (72°F), with an average of 14°C (57°F). The month experiences 71 mm (2.8 in) of precipitation over about 12 days, maintaining a high humidity level of 86%. In contrast, February is much colder, with temperatures dipping to a minimum of -2°C (29°F) and peaking at 14°C (58°F), averaging 7°C (44°F). Despite a slightly higher total precipitation of 76 mm (3.0 in) over 15 days, humidity remains consistent at 86%. For more detailed information on February weather, you can check Drogheda weather in February.

September and March exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 4°C (39°F) to a maximum of 22°C (72°F), with an average of 14°C (57°F), making it generally warmer. The month sees about 71 mm (2.8 in) of precipitation over roughly 12 days, along with a high humidity level of 86%. In contrast, March experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 7°C (45°F), peaking at 16°C (61°F). Precipitation slightly increases to 76 mm (3.0 in) over about 15 days while maintaining the same humidity level of 86%. For more detailed information, you can check Drogheda weather in March.

September and April exhibit distinct weather characteristics as the seasons transition. In September, temperatures range from a cooler minimum of 4°C (39°F) to a warmer maximum of 22°C (72°F), with an average of 14°C (57°F). This month also sees a total of 71 mm (2.8 in) of precipitation over 12 days, accompanied by relatively high humidity at 86%. In contrast, April tends to be chillier, with temperatures dipping to a minimum of -1°C (30°F) and peaking at 20°C (67°F), averaging around 9°C (48°F). Precipitation is lighter in April, totaling 42 mm (1.6 in) over 9 days, while humidity remains comparable at 85%. For more specific details on April weather, you can refer to Drogheda weather in April.

When comparing the weather in September and May, we notice that September generally boasts slightly warmer temperatures. The average temperature in September reaches 14°C (57°F), whereas May averages at 12°C (54°F). Both months share a similar maximum temperature of about 22°C (72°F), but September has a higher minimum temperature at 4°C (39°F) compared to May's 1°C (34°F). Precipitation is more prevalent in September, with 71 mm (2.8 in) over 12 days, compared to May's 58 mm (2.3 in) across the same number of days. Humidity levels are quite high in both months, with September averaging 86% and May slightly lower at 83%. For detailed weather insights, you can explore Drogheda weather in May.

In comparing the weather of September and June, September tends to be slightly cooler, with minimum temperatures dropping to around 4°C (39°F) and maximum temperatures reaching up to 22°C (72°F). In contrast, June experiences warmer temperatures, with a minimum of 7°C (44°F) and a maximum of 26°C (80°F). Both months have similar precipitation levels, with September receiving 71 mm (2.8 in) over approximately 12 days, while June sees 69 mm (2.7 in) across about 13 days. Humidity levels are comparable as well, with September at 86% and June at 85%. For more detailed information, you can check Drogheda weather in June.

In comparing the weather of September and July, July tends to be warmer, with an average temperature of 16°C (62°F) and maximum highs reaching 27°C (82°F), compared to September's average of 14°C (57°F) and highs of 22°C (72°F). Both months exhibit similar levels of humidity at 86%, creating a damp atmosphere. While precipitation levels are quite close, with July receiving 73 mm (2.9 in) over 13 days and September seeing 71 mm (2.8 in) over 12 days, July is slightly wetter. For more detailed information on July weather, you can visit Drogheda weather in July.

In comparing the weather between August and September, August tends to be slightly warmer, with average temperatures ranging from a minimum of 8°C (46°F) to a maximum of 23°C (74°F). In contrast, September brings cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 22°C (72°F), averaging around 14°C (57°F). Precipitation is also heavier in August, totaling 101 mm (4.0 in) over 16 days, whereas September sees 71 mm (2.8 in) spread over 12 days. Overall, while both months are characterized by high humidity, September offers a noticeable drop in temperature compared to August, making it feel distinctively cooler. For more details, check out Drogheda weather in August.

In comparing the weather between September and October, we see a noticeable drop in temperature. September boasts a minimum temperature of 4°C (39°F) and an average of 14°C (57°F), with a maximum reaching 22°C (72°F). In contrast, October sees cooler temperatures, with a minimum of 2°C (36°F), an average of 11°C (52°F), and a maximum of 19°C (67°F). Additionally, October experiences slightly higher precipitation levels, totaling 80 mm (3.2 in) over approximately 14 days, compared to September's 71 mm (2.8 in) during 12 days. Humidity remains relatively high, increasing from 86% in September to 87% in October. For more detailed information, check out Drogheda weather in October.

In September, the weather is generally milder, with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 22°C (72°F), and a pleasant average of 14°C (57°F). However, it also sees some precipitation, with around 71 mm (2.8 in) falling over 12 days, coupled with high humidity at 86%. In contrast, November brings a noticeable drop in temperatures, with averages hovering around 9°C (48°F) and a maximum of 15°C (60°F), while the minimum dips to -1°C (31°F). This month experiences slightly increased rainfall of 89 mm (3.5 in) over 14 days, maintaining the same level of humidity at 86%. For a detailed look at November's weather patterns, you can check Drogheda weather in November.

In September, the weather tends to be milder, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 22°C (72°F) and an average of 14°C (57°F). The month sees a fair amount of precipitation, totaling 71 mm (2.8 in) over about 12 days, accompanied by relatively high humidity at 86%. In contrast, December brings cooler conditions, with temperatures dipping to a minimum of -1°C (30°F) and peaking at 13°C (56°F), averaging 7°C (45°F). Precipitation slightly increases to 88 mm (3.5 in) over 14 days, while humidity remains similar at 84%. For more detailed information, you can check out Drogheda weather in December.

Compare Drogheda's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Drogheda

As September arrives in Drogheda, it brings a delightful transition from the warm summer days, featuring a notable drop in maximum temperatures and an increase in moisture with an average humidity of 86%. This month is characterized by a blend of mild temperatures and occasional rainfall, with precipitation occurring on about half the month, setting it apart from the drier summer months. The air carries a refreshing chill, especially during mornings and evenings, hinting at the approaching autumn. For a deeper understanding of how September's weather compares with other seasons, check out the full overview at Drogheda Climate.