Last updated: March 17, 2025
January in Portmarnock, Ireland is characterized by a cool maritime climate with temperatures ranging from a brisk -3°C (27°F) at night to a pleasant 14°C (58°F) during the day. The average temperature rests around 6°C (43°F), making it a mild yet chilly month. Precipitation is notable, with approximately 53 mm (2.1 in) of rain falling over 10 days, contributing to the region's lush landscapes. High humidity levels, around 85%, add to the feel of winter in this coastal town, creating a unique atmosphere that reflects the beauty and unpredictability of Irish weather.
In January, Portmarnock, Ireland experiences a range of temperatures that paint a vivid picture of winter's chill. The month typically sees minimums dipping to -3°C (27°F), contrasting with comfortable maximums reaching up to 14°C (58°F). With an average temperature of 6°C (43°F), it’s a time when the air is crisp and invigorating, inviting cozy gatherings by the fireplace. The gradual warming trend leading into February suggests a shift, as temperatures begin to rise slightly, hinting at the promise of spring. This transitional period showcases Portmarnock’s seasonal charm, where colder days gradually surrender to milder breezes, setting the stage for the blossoming beauty just around the corner.
January in Portmarnock brings an average precipitation of 53 mm (2.1 in), marking the month as one of the lighter rainfall periods of the year. With rain falling on approximately 10 days, January sets the tone for an evolving trend of increasing rainfall as the months progress. For context, February and March see a notable rise, each receiving 73 mm (2.9 in), while the spring months deliver a fluctuation, with April dipping to 44 mm (1.7 in) before climbing again into the summer. This pattern highlights the gradual escalation of precipitation, culminating in August, which boasts the highest rainfall at 95 mm (3.7 in). Overall, the data underscores January as a gateway to the wetter seasons ahead, with its brief, moderate showers paving the way for the lush, green landscapes that Ireland is renowned for.
In January, Portmarnock experiences a notable humidity level of 85%, setting the tone for a month characterized by cool, damp weather. This level of humidity remains fairly consistent throughout the winter months, with values nudging up to 86% in both February and March. As spring approaches, the humidity slightly dips to 85% in April and continues a gradual decline through May, reaching a minimum of 83%. However, as summer unfolds, the pattern reverses, with humidity climbing back to 86% in July and September, before reaching a peak of 87% in October. The return of cooler temperatures in November and December sees humidity settling around 86% and 84%, respectively. This cyclical trend highlights Portmarnock's climate, where moisture levels consistently hover around moderate to high, shaping its lush landscapes year-round.
In January, Portmarnock experiences a low UV Index of 1, which means outdoor enthusiasts can enjoy about 45 minutes of sun exposure without the risk of burning. As the month progresses into February, the UV Index only rises slightly to 2, maintaining that low exposure category and the same burn time. However, the transition into March signals a shift toward more moderate UV conditions, with the Index climbing to 4 and a reduced burn time of 30 minutes. This upward trend continues into April when the UV Index reaches 5, indicating a moderate exposure level. As spring unfolds into summer, the UV Index peaks in June and July at 8, classified as very high, drastically cutting burn time to just 15 minutes. By August, it tapers back to 7, followed by a drop to moderate levels in the fall months. The UV Index settles back to low values of 1 and 2 by December. Discover more insights on seasonal variations and safety precautions at Portmarnock UV Index.
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In Portmarnock, Ireland, January emerges as the month with the least sunshine, boasting only 80 hours of bright daylight. As the year progresses into February, the sunlight begins to increase significantly to 145 hours, signaling the gradual shift towards spring. By March, the sun's embrace grows even warmer, reaching 190 hours, while April bursts forth with a spectacular 308 hours, inviting locals and visitors alike to enjoy the outdoors. The sun continues to shine abundantly through May, peaking at an impressive 385 hours, before slightly tapering off in the summer months of June and July with 379 and 377 hours, respectively. August sees a gentle decline to 329 hours, yet the golden rays persist well into autumn, with September still enjoying 288 hours. As the year winds down, the days shorten dramatically, leading to 226 hours in October and dropping to 114 and 91 hours in November and December. Overall, the trend reflects a captivating journey from the frigid stillness of winter to the sun-drenched vibrancy of late spring, before settling into the mellow warmth of autumn.
In Portmarnock, Ireland, January welcomes the new year with a modest 27% chance of sunny weather. This likelihood is relatively higher than that of February, which drops to 21%, suggesting a gradual retreat from the dreary winter months. Interestingly, March sees a slight uptick, returning to 22%, hinting at early signs of spring. However, the real transformation occurs in April, where the probability of sunshine jumps to a more optimistic 44%. This upward trend continues into May, showcasing the seasonal shift, before dipping again in the summer months. Overall, while January may offer limited sunshine, the transition into spring shines a light on brighter days ahead for Portmarnock.
In Portmarnock, Ireland, the daylight duration experiences a distinctive ebb and flow throughout the year, with January casting 8 hours of light, a stark contrast to the approaching spring months. As February unfolds, the days gradually lengthen to 9 hours, hinting at the promise of brighter days ahead. March continues this upward trend, providing 11 hours of daylight, while April skyrockets to 14 hours, leading into the lush vibrance of May, which enjoys 15 hours of precious sunlight. The peak comes in June and July, where the daylight extends to 16 hours, illuminating the long summer evenings. However, as summer wanes, a gentle decline follows; August sees 14 hours, and by September, daylight diminishes to 12 hours. The descent continues through October with 10 hours, before dipping back to 8 hours in November and 7 hours in December. This rhythmic cycle of daylight serves as a captivating reminder of nature's seasonal dance, encouraging both reflection and anticipation.
In January, the winds in Portmarnock, Ireland begin the year with an average speed of 4.6 m/s (10 mph), setting a tranquil yet brisk tone for the winter months. This gentle breeze is a precursor to the increasingly stronger gusts that follow, peaking in February at 6.0 m/s (13 mph). As spring approaches, the wind speed undergoes slight fluctuations, dipping back to a more moderate 4.8 m/s (11 mph) in March, only to soften again by April with a light 3.5 m/s (8 mph). The summer months bring a notable calm, with July experiencing the lowest winds at 2.8 m/s (6 mph), creating a serene coastal atmosphere. However, as autumn descends, winds begin to pick up again, culminating in November and December, where the speed stabilizes around 4.9 to 5.0 m/s (11 mph), hinting at the dynamic weather patterns inherent to this picturesque seaside locale. Overall, Portmarnock's winds display a clear seasonal rhythm, with a blend of gentle whispers and robust gusts painting a picture of its ever-changing coastal climate.
The weather in Portmarnock changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portmarnock and find detailed weather information for every month.
In January, temperatures range from a chilly -3°C (27°F) to a mild 14°C (58°F), with an average of around 6°C (43°F). The month sees about 53 mm (2.1 in) of precipitation over 10 days, accompanied by a humidity level of 85%. In contrast, February experiences slightly warmer conditions, with minimum temperatures rising to -2°C (29°F) and maximum temperatures reaching 15°C (58°F), averaging 7°C (44°F). However, February also brings increased precipitation, totaling 73 mm (2.9 in) over 14 days, coupled with a slightly higher humidity of 86%. For more specifics on the weather conditions in February, you can check out Portmarnock weather in February.
In January, temperatures in Portmarnock typically range from a minimum of -3°C (27°F) to a maximum of 14°C (58°F), with an average of 6°C (43°F). The month sees about 53 mm (2.1 in) of precipitation over approximately 10 days, with humidity levels around 85%. In contrast, March offers slightly warmer conditions, with a minimum temperature of -3°C (26°F) and a maximum of 16°C (62°F), resulting in an average of 7°C (45°F). However, it also brings increased precipitation at 73 mm (2.9 in) over 14 days, alongside a marginal increase in humidity at 86%. For more details on March's weather, you can visit Portmarnock weather in March.
January and April weather present noticeable differences while both maintaining a similar humidity level of 85%. In January, temperatures range from a chilly minimum of -3°C (27°F) to a more moderate maximum of 14°C (58°F), with an average temperature of 6°C (43°F). The month sees about 53 mm (2.1 in) of precipitation spread over 10 days. In contrast, April offers a slight warming trend, with minimum temperatures reaching -1°C (31°F) and maximums peaking at 19°C (67°F), leading to an average temperature of 9°C (48°F). Precipitation is slightly lower in April at 44 mm (1.7 in), despite it occurring over 11 days. For more detailed information, you can check Portmarnock weather in April.
In January, the weather is noticeably colder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (58°F), and an average temperature of 6°C (43°F). The month also features significant humidity at 85%, and precipitation occurs over about 10 days, totaling 53 mm (2.1 in). In contrast, May brings warmer temperatures, with a minimum of 1°C (34°F) and a pleasant maximum of 22°C (72°F), resulting in an average of 12°C (53°F). Although May experiences slightly more precipitation at 62 mm (2.4 in) over 12 days, the overall feel of the month is much milder, with humidity slightly lower at 83%. For those interested in the specifics of May weather in Portmarnock, you can find more details here: Portmarnock weather in May.
January and June present contrasting weather experiences. In January, temperatures range from a chilly minimum of -3°C (27°F) to a mild maximum of 14°C (58°F), with an average temperature of 6°C (43°F). This month sees about 53 mm (2.1 in) of precipitation over approximately 10 days, accompanied by a high humidity of 85%. In stark contrast, June brings more inviting conditions, with temperatures fluctuating between a minimum of 7°C (44°F) and a maximum of 25°C (77°F), averaging 15°C (58°F). Although June receives slightly more precipitation at 69 mm (2.7 in) across 13 days, the warmth and longer daylight hours make it a much more pleasant month. For more information, you can check Portmarnock weather in June.
January is characterized by chilly temperatures, with averages only reaching around 6°C (43°F) and a max of 14°C (58°F), whereas July offers a much warmer climate, with average temperatures soaring to 16°C (62°F) and highs of 27°C (80°F). Both months experience a similar level of humidity, hovering around 85% in January and slightly higher at 86% in July. Precipitation is also notable in both months, with 53 mm (2.1 in) in January over approximately 10 days, compared to July's 73 mm (2.9 in) spread over 12 days. For those interested in more details about the warm summer conditions, check out Portmarnock weather in July.
January and August present contrasting weather patterns in terms of temperature and precipitation. In January, temperatures range from a chilly -3°C (27°F) at night to a maximum of 14°C (58°F) during the day, while August enjoys a milder climate with minimums of 8°C (47°F) and maximums reaching 23°C (74°F). January experiences an average precipitation of 53 mm (2.1 in) over about 10 days, whereas August sees more rain, with 95 mm (3.7 in) spread across 16 days. Despite this increase in rainfall, both months maintain a high humidity level of 85%. For more detailed information on August weather specifics, check out Portmarnock weather in August.
In January, temperatures in Portmarnock range from a chilly -3°C (27°F) at night to a mild 14°C (58°F) during the day, with an average of 6°C (43°F). The month experiences about 53 mm (2.1 in) of precipitation over approximately 10 days, coupled with a high humidity level of 85%. In contrast, September brings a more pleasant climate, with minimum temperatures at 4°C (39°F) and maximums reaching 22°C (72°F), averaging around 14°C (57°F). This month sees a higher total precipitation of 70 mm (2.7 in) over about 13 days, and humidity is slightly elevated at 86%. For a detailed look at the climate in September, visit Portmarnock weather in September.
In January, the weather tends to be colder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (58°F) and an average of 6°C (43°F). The month sees about 53 mm (2.1 in) of precipitation over approximately 10 days, accompanied by high humidity levels at 85%. In contrast, October is milder, featuring temperatures that range from a minimum of 2°C (36°F) to a maximum of 19°C (67°F), with an average temperature of 11°C (53°F). Precipitation increases to 79 mm (3.1 in) across around 13 days, with slightly higher humidity at 87%. For more details on October weather, visit Portmarnock weather in October.
In comparing the weather between January and November, January typically experiences slightly colder temperatures, with averages ranging from a minimum of -3°C (27°F) to a maximum of 14°C (58°F), while November boasts milder conditions with temperatures between -1°C (31°F) and 15°C (60°F). Both months see a fair amount of precipitation, but November is wetter, receiving an average of 93 mm (3.6 in) over 14 days compared to January's 53 mm (2.1 in) across 10 days. The humidity remains relatively high in both months, at 85% in January and slightly higher at 86% in November, contributing to the overall dampness typical of this time of year. For more details on November's weather specifically, you can visit Portmarnock weather in November.
In comparing the weather of January and December, both months exhibit similar cold temperatures, though January is slightly chillier with an average of 6°C (43°F) compared to December's 7°C (45°F). January experiences a broader temperature range, with minimums of -3°C (27°F) and maximums reaching up to 14°C (58°F). In terms of precipitation, December is wetter, receiving 85 mm (3.4 in) over 14 days, versus January's 53 mm (2.1 in) on 10 days. Humidity levels remain fairly consistent, with December at 84% and January at 85%. For more detailed information on December weather, visit Portmarnock weather in December.
As January settles in Portmarnock, it ushers in a stark contrast to the milder months, with temperatures dipping to their lowest observed values of the year. The cool air, often punctuated by frequent rain, creates an atmosphere that feels crisp and fresh, with humidity levels remaining high. While January might not boast the warmth or sunny days of spring and summer, it offers a unique charm that's perfect for those looking to embrace the peaceful ambiance of winter. For a deeper insight into how January fits into the broader climate patterns, explore Portmarnock Climate.