October Weather in Dundalk, Ireland

Last updated: March 17, 2025

October in Dundalk, Ireland presents a spell of varied weather, characterized by mild maximum temperatures reaching up to 19°C (66°F) and a cooler average of 10°C (51°F). As autumn deepens, nighttime temperatures can drop to a brisk 0°C (32°F), hinting at the approaching winter. Rainfall is notable during this month, with 80 mm (3.1 in) accumulated over approximately 14 days, contributing to an overall high humidity level of 87%. Expect a mix of chilly breezes and occasional showers as the landscape transforms into its stunning fall palette.

October Temperature in Dundalk

In Dundalk, Ireland, October marks the transition into cooler months, bringing with it distinct changes in temperature. As autumn settles in, daily temperatures average about 10°C (51°F), with highs reaching a mild 19°C (66°F), perfect for enjoying the vibrant fall foliage. Nights grow crisp, dipping to a minimum of 0°C (32°F), which encourages cozy evenings indoors. This month stands out with a notable shift from the warmer September, where temperatures hovered around 13°C (56°F), highlighting the steady progression into winter's embrace. Overall, October offers a refreshing blend of mild days and chilly nights, making it an ideal time to appreciate Dundalk's natural beauty.

October Weather in Dundalk: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Dundalk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424244475257605956514643
Data source: Temperature data for Dundalk 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.

October Precipitation in Dundalk

October in Dundalk, Ireland, brings a notable shift in weather, marked by an average precipitation of 80 mm (3.1 in) over approximately 14 days. This amount, while slightly below the deluge of August, reflects a consistent trend in the autumn months where rainfall begins to intensify. Interestingly, October's precipitation is on par with March’s totals, suggesting a transitional phase as the region moves towards winter. With wet conditions persisting, residents can expect layered clothing and cozy indoor activities, as the rain nourishes the lush Irish landscapes that are quintessential to this picturesque locale.

October Precipitation Trends in Dundalk

The chart displays monthly precipitation patterns in Dundalk, with values for each month alongside October's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec5485804566767411474808489
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Dundalk

In October, Dundalk, Ireland, experiences a rise in humidity, reaching 87%, the highest level of the year. This month marks a slight increase from September's 86%, indicating a seasonal shift as autumn deepens. Throughout the year, humidity levels in Dundalk show little variation, typically hovering around the mid-80s, with October and July being the exceptions at the upper end of the scale. Interestingly, the increase in October's humidity aligns with an overall trend of slightly elevated levels in the latter months of the year, providing a distinctly moist atmosphere as the days grow shorter and cooler.

October Average Humidity in Dundalk

This chart illustrates the average monthly humidity levels in Dundalk, with October's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how October's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Dundalk

As October unfolds in Dundalk, Ireland, the UV Index typically sits at a moderate level of 3, suggesting that while sun protection is recommended for prolonged sun exposure, the risk of harm from unprotected sun exposure remains low. This trend reflects a gradual decline from the high values seen during the summer months, where UV Index levels peaked at 8 in both June and July. Throughout the year, the exposure risk fluctuates, reaching a high of 7 in May and August before tapering down into the fall. October's 30-minute burn time aligns closely with the September reading, emphasizing the importance of being mindful of sun exposure as daylight hours shorten and temperatures cool. For more detailed insights on UV safety, check out the Dundalk UV Index.

Maximum UV Index Levels in Dundalk for October

The chart shows the monthly maximum UV Index (UVI) for Dundalk in October, 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: Dundalk October 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.

October Sunshine in Dundalk

In Dundalk, Ireland, October marks a gentle decline in sunshine hours as the vibrant colors of autumn set in. With 223 hours of sunlight, it stands as a significant month, showcasing the tail end of a sun-soaked summer that peaked in May with 383 hours. As the year progresses, the sunshine progressively diminishes from these lofty heights, with autumn's onset evident as the days shorten and the chill of winter approaches. This trend is particularly striking when compared to the preceding months, where sunshine hours gracefully taper from 283 hours in September. While October may not boast the bright days of summer, it still offers a beautiful balance of daylight, making it a picturesque time to explore the changing landscape of Dundalk.

Monthly Sunshine Duration in Dundalk: October Highlighted

The October sunshine duration represents the total number of hours Dundalk experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec79h144h190h303h383h375h374h325h283h223h110h86h
Data source: Dundalk October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dundalk During October

In Dundalk, Ireland, the likelihood of sunny weather experiences a notable decline as autumn settles in, with October seeing only a 17% chance of sunshine. This dip follows a moderate rise through the spring months, peaking in April at 39%, and steadily decreasing through the summer. While previous months maintained higher percentages, October's limited sun reflects the transition into a cooler, cloudier season. Interestingly, the trend shows that as the year progresses towards winter, sunshine chances generally hover around the lower spectrum, making the rare sunny day in October a delightful surprise amidst the gloom.

Percentage of Sunny Days in October in Dundalk

The chart illustrates the percentage of sunny days in Dundalk throughout the year, with October 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 Dundalk experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%20%18%39%33%21%26%20%19%17%23%16%
Data source: Dundalk October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dundalk in October

As autumn settles in Dundalk, Ireland, October brings a notable decrease in daylight, offering just 10 hours for the month. This reduction follows the sunshine peak of summer months, where June basked in a generous 17 hours of daylight. As we transition from the vibrant longer days of summer to the shorter hours of winter, daylight diminishes more rapidly in October compared to the previous months, reminiscent of the 12 hours experienced in September. While daylight in October is still brighter than the dim light of winter—8 hours in November—it marks a clear shift toward the cozy, shorter days typical of the season. The gradual decline in light is a reminder of the enchanting rhythm of nature as the year draws to a close.

Average Daylight Hours in Dundalk for October

The chart illustrates the variation in daylight duration in Dundalk throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 1m9h 46m11h 54m14h 5m16h17h 1m16h 28m14h 44m12h 37m10h 28m8h 31m7h 27m
Data source: Dundalk daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Dundalk

As autumn settles in, October breathes a refreshing vitality into Dundalk, Ireland, with an average wind speed of 4.3 m/s (10 mph), marking a noticeable uptick from the summer's lull. In contrast to the calmer July winds, which dropped to just 2.5 m/s (6 mph), October's breezes invigorate the landscape, hinting at the seasonal shift. This increase continues into November, where winds remain steady at 4.4 m/s (10 mph), suggesting a trend of elevated gusts as the year draws to a close. The October winds, brisk and lively, invite locals and visitors alike to embrace the vibrant autumn atmosphere, making it an ideal time for outdoor exploration in the charming town of Dundalk.

Average October Wind Speed in Dundalk

The chart displays monthly wind speed patterns in Dundalk, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.95.34.43.23.63.52.53.13.34.3 m/s4.44.4
Data source: Dundalk October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Dundalk Compares to Other Months

The weather in Dundalk changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Dundalk and find detailed weather information for every month.

October and January present quite different weather patterns. In October, temperatures range from a minimum of 0°C (32°F) to a maximum of 19°C (66°F), with an average temperature of 10°C (51°F). The month experiences approximately 80 mm (3.1 in) of precipitation over 14 days, accompanied by high humidity at 87%. In contrast, January is chillier, with temperatures ranging from a low of -5°C (23°F) to a high of 14°C (57°F), averaging at 5°C (42°F). This month has lower precipitation, about 54 mm (2.1 in) over 10 days, and slightly lower humidity at 85%. For more specifics on January weather, you can check Dundalk weather in January.

October and February present distinct weather patterns that significantly influence the seasonal experience. In October, temperatures range from a chilly 0°C (32°F) at night to a mild 19°C (66°F) during the day, averaging around 10°C (51°F). The month sees considerable precipitation, with about 80 mm (3.1 in) spread over 14 days, while humidity remains high at 87%. In contrast, February is colder, with temperatures dipping to a minimum of -4°C (25°F) and peaking at 14°C (58°F), averaging around 6°C (43°F). Despite the slightly lower precipitation of 85 mm (3.4 in) over 15 days, the humidity remains similar at 86%. For a more detailed look at February weather, visit Dundalk weather in February.

October and March present contrasting seasonal shifts in weather patterns. October typically boasts milder temperatures, with an average of 10°C (51°F) and a maximum of 19°C (66°F), whereas March experiences a cooler average of 7°C (44°F) and can drop to a minimum of -4°C (25°F). Both months share similar precipitation levels, around 80 mm (3.1 in), but October tends to see slightly less frequent rainy days at 14 compared to March's 16 days. Humidity levels remain comparable, with October at 87% and March slightly lower at 86%. For those specifically interested in the conditions for March, you can find more details here: Dundalk weather in March.

When comparing the weather in October and April, we see some notable differences. October tends to be slightly warmer overall, with average temperatures reaching 10°C (51°F) compared to April's average of 8°C (47°F). However, April can experience slightly cooler nights with a minimum temperature of -2°C (28°F), whereas October's minimum is a more moderate 0°C (32°F). Precipitation levels are higher in October, with 80 mm (3.1 in) over 14 days, compared to April's 45 mm (1.8 in) over 11 days, indicating that October is generally wetter. Humidity remains relatively similar in both months, with October at 87% and April at 85%. For more specific information about the weather in April, you can check Dundalk weather in April.

In October, the weather tends to be cooler, with temperatures ranging from a chilly 0°C (32°F) to a moderate high of 19°C (66°F), and the month also sees a significant amount of precipitation measuring 80 mm (3.1 in) over about 14 days. The humidity levels are relatively high at 87%, contributing to a damp and crisp atmosphere. In contrast, May presents a more pleasant climate, featuring slightly warmer temperatures that vary from -1°C (30°F) to a maximum of 23°C (73°F). With 66 mm (2.6 in) of rainfall spread over 12 days and a lower humidity of 83%, May offers more comfortable conditions, making it an ideal time for outdoor activities. For more details on May weather, you can visit Dundalk weather in May.

In comparing the weather between October and June, we see distinct seasonal differences. October's temperatures range from a chilly 0°C (32°F) at night to a mild 19°C (66°F) during the day, with an average of 10°C (51°F). The month brings about 80 mm (3.1 in) of rainfall over 14 days, coupled with high humidity at 87%. Conversely, June enjoys warmer conditions, with temperatures varying from a minimum of 4°C (40°F) to a pleasant maximum of 28°C (82°F), averaging 14°C (58°F). June also experiences slightly less rainfall at 76 mm (3.0 in) over the same number of days but maintains a similar humidity level of 85%. For a more detailed look at the weather specifics, you can visit Dundalk weather in June.

When comparing the weather in October and July, it's clear that October tends to be cooler and wetter. In October, temperatures range from a chilly minimum of 0°C (32°F) to a maximum of 19°C (66°F), with an average temperature of 10°C (51°F). This month also sees higher precipitation levels, averaging 80 mm (3.1 in) over approximately 14 rainy days and high humidity at 87%. In contrast, July boasts milder temperatures with a minimum of 7°C (45°F) and a comfortable maximum of 28°C (82°F), averaging around 16°C (61°F). Despite being slightly drier, July still experiences rainfall, totaling 74 mm (2.9 in) across 13 days and maintaining a humidity of 86%. For more detailed insights into July weather, you can visit Dundalk weather in July.

In comparing the weather between October and August, October tends to be cooler with average temperatures ranging from 0°C (32°F) to a maximum of 19°C (66°F), while August generally enjoys milder temperatures, with averages from 7°C (44°F) to 23°C (74°F). Moreover, October experiences significantly more humidity at 87% compared to August’s 85%. Although both months see considerable rainfall, October has an average precipitation of 80 mm (3.1 in) over 14 days, while August records a higher total of 114 mm (4.5 in) across 18 days. For more detailed information on August weather, check out Dundalk weather in August.

In comparing the weather of October and September, October typically experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 10°C (51°F), compared to September's minimum of 3°C (37°F) and average of 13°C (56°F). While both months have a similar level of precipitation, October has slightly higher rainfall at 80 mm (3.1 in) over 14 days, compared to September's 74 mm (2.9 in) over 13 days. Humidity levels remain high in both months, with October averaging 87% and September at 86%. For more detailed insights into September weather, visit Dundalk weather in September.

In October, the weather tends to be milder with an average temperature of 10°C (51°F) and maximum highs reaching 19°C (66°F). This month experiences about 80 mm (3.1 inches) of precipitation over 14 days, accompanied by high humidity levels at around 87%.

As November approaches, temperatures drop slightly, with an average of 8°C (46°F) and maximums peaking at 15°C (59°F). Precipitation remains consistent, with around 84 mm (3.3 inches) of rainfall expected over 15 days, and humidity hovers around 86%. For a detailed look at the weather specifics for this month, check out Dundalk weather in November.

October and December in Dundalk present notable contrasts in weather. October tends to be milder, with temperatures ranging from a minimum of 0°C to a maximum of 19°C, averaging around 10°C, while December sees cooler conditions, with temperatures dipping to a minimum of -3°C and a maximum of 13°C, averaging 6°C. Precipitation levels are relatively similar, with October experiencing 80 mm over 14 days and December slightly higher at 89 mm over 13 days. Interestingly, humidity remains high in both months, with October at 87% and December slightly lower at 84%. For more details on December weather in Dundalk, you can visit this link: Dundalk weather in December.

Compare Dundalk's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Dundalk

As October unfolds in Dundalk, the weather begins its transition into the cooler embrace of autumn, making it distinctly different from the warmer months. Average temperatures dip to a brisk 10°C (51°F), accompanied by a notable increase in humidity at 87%, which often adds a chill to the air. Rain becomes a more frequent visitor, with approximately 80 mm of precipitation stretched over 14 days, painting the landscape in vibrant autumn hues. Unlike the sun-soaked summer days, October calls for cozy layers and the anticipation of sweater weather as nature prepares for the winter ahead. For a detailed look at how Dundalk's weather patterns shape the season, visit Dundalk Climate.