July Weather in Dun Laoghaire, Ireland

Last updated: March 17, 2025

Experience the summer charm of Dun Laoghaire, Ireland, in July, where temperatures can soar to a maximum of 25°C (77°F), offering a warm respite for locals and visitors alike. The average temperature sits comfortably at 16°C (60°F), providing a pleasant climate for outdoor activities and coastal strolls. However, be prepared for occasional rain, as 80 mm (3.2 in) of precipitation typically falls over 14 days, contributing to the lush greenery of the area. With humidity levels reaching 86%, July in Dun Laoghaire invites you to embrace the vibrant atmosphere while enjoying the stunning sea views.

July Temperature in Dun Laoghaire

In Dun Laoghaire, Ireland, July ushers in the warmth of summer, with temperatures reflecting a delightful rise. The month boasts a minimum temperature of 8°C (46°F), gradually climbing to an average of 16°C (60°F) and peaking at a refreshing 25°C (77°F). This significant leap from the chill of earlier months showcases July as a time for outdoor adventures along the scenic coast. Compared to June's temperatures, which average around 14°C (57°F), it's clear that July embraces the height of summer, making it perfect for enjoying the vibrant local culture and stunning seaside views. As the temperatures continue to trend upward, both locals and visitors revel in the milder conditions, setting the stage for a truly enjoyable experience in this charming Irish town.

July Weather in Dun Laoghaire: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Dun Laoghaire, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605956514643
Data source: Temperature data for Dun Laoghaire 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.

July Precipitation in Dun Laoghaire

In July, Dun Laoghaire experiences a notable increase in rainfall, with precipitation measuring 80 mm (3.2 inches), consistent with the wetter summer months. This marks a continuation of the trend observed from June, which recorded 75 mm (3.0 inches), suggesting that the region's lush landscapes thrive under the influence of its maritime climate. The month sees 14 days of rain, highlighting a pattern of frequent but often light showers that characterize this coastal town. As July transitions into August, the precipitation typically intensifies, with August recording an average of 95 mm (3.8 inches), indicating that while summer may be in full swing, the skies remain active, influencing both the local environment and community life in vibrant ways.

July Precipitation Trends in Dun Laoghaire

The chart displays monthly precipitation patterns in Dun Laoghaire, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec578081527275809573879794
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Dun Laoghaire

In July, Dun Laoghaire experiences a notable humidity level of 86%, aligning with the trend observed throughout the summer months. This slight increase from June's 85% indicates a pattern of consistent humidity as the year progresses, with levels generally hovering in the mid-80s. Following the peak summer month of July, a subtle return to August’s 85% is apparent, leading into the slightly higher September humidity of 86%. Overall, it's clear that Dun Laoghaire maintains a relatively humid atmosphere year-round, with autumn and winter months bringing a marginal uptick in moisture, peaking at 87% in October, before descending back into the mid-80s by December. The climate creates a lush, vibrant coastal environment that is characteristic of this charming Irish town.

July Average Humidity in Dun Laoghaire

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

July UV Index in Dun Laoghaire

In July, Dun Laoghaire experiences a very high UV Index of 8, similar to the previous month, June. This level of exposure means that sun protection is crucial, as the recommended burn time drops to just 15 minutes. As summer peaks, the UV Index in these months stands out starkly against the rest of the year, where values typically range from 1 to 7. Following July, the UV Index begins to taper off, dropping to 7 in August, but the early summer sun certainly commands attention. Whether you’re strolling along the coast or soaking up the rays, always check the daily UV levels to stay safe and enjoy all Dun Laoghaire has to offer. For more information, visit the Dun Laoghaire UV Index.

Maximum UV Index Levels in Dun Laoghaire for July

The chart shows the monthly maximum UV Index (UVI) for Dun Laoghaire in July, 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: Dun Laoghaire July 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.

July Sunshine in Dun Laoghaire

In Dun Laoghaire, July shines as one of the peak months for sunshine hours, boasting a solid 385 hours of sunlight, matching June's brightness and highlighting the summer's vibrant charm. This burst of sunshine follows a gradual increase from January’s meager 83 hours, revealing a delightful trend as the year progresses. After the spring months ramp up to 311 hours in April and peak at 391 hours in May, July maintains that sunny momentum, ensuring delightful outdoor experiences. As summer fades into August, the hours begin to taper off to 339, yet the warmth of July still lingers, making it a cherished time for both locals and visitors alike. The gradual descent in sunshine hours through autumn, tapering down to just 120 hours by November, serves as a bittersweet reminder of the fleeting nature of these long summer days.

Monthly Sunshine Duration in Dun Laoghaire: July Highlighted

The July sunshine duration represents the total number of hours Dun Laoghaire experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec83h147h191h311h391h385h385h339h294h230h120h95h
Data source: Dun Laoghaire July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dun Laoghaire During July

In Dun Laoghaire, the likelihood of enjoying sunny weather in July stands at 30%, making it one of the brighter months as summer peaks. Although this percentage may seem modest, it marks a slight increase compared to June's 24%, hinting at a trend where sunshine gradually becomes more common as the year progresses towards summer. Notably, April shines with the highest chance of sun at 44%, establishing the warmer months as a time when clearer skies are more likely. However, July's chance is still lower than May's, which sits at 31%, suggesting that while July offers opportunities for sunny days, it may sometimes be overshadowed by slightly sunnier predecessors. As the summer unfolds, this increase in sunlight can lift spirits, embedding a sense of optimism within the community and visitors alike.

Percentage of Sunny Days in July in Dun Laoghaire

The chart illustrates the percentage of sunny days in Dun Laoghaire throughout the year, with July 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 Dun Laoghaire experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%21%22%44%31%24%30%23%20%19%26%23%
Data source: Dun Laoghaire July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dun Laoghaire in July

In Dun Laoghaire, Ireland, July stands out with its remarkable 16 hours of daylight, continuing the trend established in June. This peak of luminosity follows a gradual increase from the winter months, where January offers just 8 hours of light. As spring arrives, daylight steadily grows, preparing residents for the abundant brightness of summer. Following July, a noticeable decline begins, with August seeing a reduction to 14 hours, signaling the start of shorter days as autumn approaches. This cyclical pattern not only highlights the rhythm of the seasons but also invites locals and visitors alike to embrace the long, vibrant summer evenings that July uniquely provides.

Average Daylight Hours in Dun Laoghaire for July

The chart illustrates the variation in daylight duration in Dun Laoghaire throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 7m9h 49m11h 54m14h 2m15h 54m16h 53m16h 22m14h 40m12h 37m10h 30m8h 36m7h 34m
Data source: Dun Laoghaire daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Dun Laoghaire

In July, Dun Laoghaire experiences its calmest winds of the year, with an average speed of just 2.7 m/s (6 mph). This gentle breeze sets July apart from the earlier months, where wind speeds tend to be more robust—peaking at 6.0 m/s (13 mph) in February. As summer unfolds, the winds gradually ease, creating a serene atmosphere that's perfect for leisurely strolls along the seaside promenade or enjoying the scenic harbor views. Although the wind picks up again in August with an average of 3.6 m/s, July’s tranquility offers a delightful contrast to the often brisker conditions of the rest of the year. Overall, this month's softer air complements the warm summer days, inviting locals and visitors alike to relax and soak in the beauty of Dun Laoghaire.

Average July Wind Speed in Dun Laoghaire

The chart displays monthly wind speed patterns in Dun Laoghaire, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.56.04.73.44.03.72.7 m/s3.63.44.94.84.9
Data source: Dun Laoghaire July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Dun Laoghaire Compares to Other Months

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

July and January present vastly different weather patterns. In July, temperatures range from a mild 8°C (46°F) at night to a pleasant maximum of 25°C (77°F) during the day, with an average of around 16°C (60°F). This month also sees higher precipitation levels, with 80 mm (3.2 in) spread over 14 days and humidity reaching 86%. In contrast, January experiences much colder conditions, with temperatures dipping as low as -3°C (26°F) at night and averaging 5°C (42°F) during the day, peaking at 13°C (56°F). Precipitation is less frequent, totaling 57 mm (2.2 in) over 10 days, while humidity remains slightly lower, at 85%. To learn more about the specifics of January weather, check out Dun Laoghaire weather in January.

In comparing the weather of July and February, we see notable differences in temperature and conditions. July boasts a range from a mild 8°C (46°F) to a warm 25°C (77°F), while February experiences a chillier range, with temperatures dipping down to -2°C (29°F) and peaking at 14°C (58°F). Both months receive a similar amount of precipitation, around 80 mm (3.2 in for July and 3.1 in for February), spread over about 14 days; however, the higher humidity of 86% in both months adds a layer of discomfort year-round. For those interested in exploring February's unique weather conditions, more details can be found at Dun Laoghaire weather in February.

The weather in July is notably warmer than in March, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 25°C (77°F), while March sees a cooler range, with temperatures dipping as low as -5°C (24°F) and peaking at just 16°C (61°F). Despite both months experiencing similar levels of precipitation—around 80 mm (3.2 in)—July typically enjoys slightly less rainy days (14) compared to March's 15 rainy days. Both months also share a high humidity level of 86%, contributing to the moist atmosphere. For a more detailed exploration of weather conditions in March, you can visit Dun Laoghaire weather in March.

In comparing the weather of July and April, July offers significantly warmer temperatures, with averages reaching up to 16°C (60°F) and maximum highs of 25°C (77°F), while April is much cooler, averaging only 8°C (47°F) and a maximum of 19°C (66°F). The humidity is slightly higher in July at 86%, compared to 85% in April. Additionally, July experiences more precipitation, with 80 mm (3.2 in) over 14 days, whereas April sees 52 mm (2.0 in) over 11 days. For a detailed look at April's climate, check out Dun Laoghaire weather in April.

In comparing the weather of July and May, July generally presents warmer conditions with a minimum temperature of 8°C (46°F) and an average high of 25°C (77°F), whereas May starts off cooler, with minimum temperatures dropping to 0°C (32°F) and a maximum of 21°C (71°F). Precipitation levels in July are slightly higher at 80 mm (3.2 in) compared to May's 72 mm (2.8 in), though both months experience rain on approximately 14 days. Additionally, July's humidity is a bit higher at 86%, while May sits at 83%. For more detailed insights on May weather specifically, check out Dun Laoghaire weather in May.

In comparing the weather between June and July, July experiences slightly warmer conditions, with an average temperature of 16°C (60°F) compared to June's 14°C (57°F). The maximum temperature in July reaches up to 25°C (77°F), just above June's maximum of 24°C (75°F). Precipitation levels are fairly similar, with July recording 80 mm (3.2 in) over 14 days, while June has 75 mm (3.0 in) over 15 days. Humidity remains high in both months, with July at 86% and June at 85%. For more details on June weather, visit Dun Laoghaire weather in June.

July and August present relatively similar weather patterns, but with some notable differences. In July, temperatures range from a minimum of 8°C (46°F) to a maximum of 25°C (77°F), while August sees slightly cooler averages, with a minimum of 7°C (45°F) and a maximum of 23°C (73°F). Precipitation is also slightly higher in August, with 95 mm (3.8 in) expected over 16 days compared to July's 80 mm (3.2 in) over 14 days. Humidity levels remain similar in both months, hovering around 86% in July and dropping slightly to 85% in August. For more detailed insights, check out Dun Laoghaire weather in August.

In comparing the weather between July and September, we notice a distinct cooling trend. July boasts a minimum temperature of 8°C (46°F) and an average of 16°C (60°F), with a maximum reaching 25°C (77°F), indicating warmer summer conditions. In contrast, September's temperatures drop further, with a minimum of 3°C (38°F), an average of 13°C (56°F), and a maximum of 22°C (72°F). Despite these cooler temperatures, both months share similar precipitation levels, with July receiving 80 mm (3.2 in) and September slightly less at 73 mm (2.9 in), both spread over 14 days. Humidity remains constant at 86% in both months, contributing to a similar sense of dampness during late summer and early autumn. For more detailed information on September weather in Dun Laoghaire, you can check out Dun Laoghaire weather in September.

In comparing the weather of July and October, notable differences in temperature and conditions emerge. July typically features milder temperatures, with a minimum of 8°C (46°F), an average of 16°C (60°F), and a maximum of 25°C (77°F), while October sees cooler readings, with a minimum of 1°C (35°F), an average of 11°C (51°F), and a maximum of 18°C (65°F). Both months experience a similar frequency of precipitation, totaling around 14 days, but October slightly edges out with 87 mm (3.4 in) compared to July's 80 mm (3.2 in). Humidity levels are similarly high, hovering around 86% in July and reaching 87% in October. For a more detailed look at October conditions, you can visit Dun Laoghaire weather in October.

July and November present contrasting weather patterns, with July enjoying warmer temperatures that range from a minimum of 8°C (46°F) to a maximum of 25°C (77°F), and an average of 16°C (60°F). It experiences 80 mm (3.2 in) of precipitation over 14 days, accompanied by high humidity levels at 86%. In contrast, November sees much cooler temperatures, with a minimum of 0°C (32°F), an average of 8°C (46°F), and a maximum of 15°C (59°F). The month also has slightly more rainfall, totaling 97 mm (3.8 in) over the same number of days. Interestingly, both months share the same humidity level of 86%, yet the overall feel in November is crisp and chilly compared to the warmer, more humid July. For those looking to explore the nuances of November weather, more detailed information can be found here: Dun Laoghaire weather in November.

July and December present distinctly different weather conditions. In July, temperatures range from a mild 8°C (46°F) at night to a warm 25°C (77°F) during the day, with an average of 16°C (60°F). The month sees about 80 mm (3.2 in) of precipitation over 14 days and maintains a high humidity level of 86%. In contrast, December experiences much cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 13°C (56°F), averaging around 6°C (44°F). Precipitation increases slightly to 94 mm (3.7 in) spread across 15 days, while humidity remains relatively high at 84%. For more detailed information, you can check Dun Laoghaire weather in December.

Compare Dun Laoghaire's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Dun Laoghaire

As July unfolds in Dun Laoghaire, it stands out with its warmer temperatures and vibrant humidity, offering a notable shift from the cooler months. With maximum highs reaching up to 25°C, the month invites outdoor adventures and leisurely seaside strolls, unlike the chillier early summer days. However, it's also marked by a fair bit of rain, with precipitation occurring on about half the days, which can challenge even the sunniest of outings. The blend of warmth and moisture creates a lush, vibrant backdrop for exploring this coastal town. For a more in-depth look at how Dun Laoghaire’s climate shapes its July weather and activities, check out Dun Laoghaire Climate.