April Weather in Portmarnock, Ireland

Last updated: March 17, 2025

April in Portmarnock, Ireland showcases a vibrant mix of springtime weather, with temperatures ranging from a chilly -1°C (31°F) at night to a pleasant maximum of 19°C (67°F) during the day. The month features an average temperature of 9°C (48°F), creating a refreshing atmosphere for both locals and visitors. However, be prepared for occasional rain, as 44 mm (1.7 in) of precipitation falls across 11 days, adding to the lush greenery that characterizes this coastal town. With an average humidity of 85%, the air feels crisp but invigorating, making April a unique time to explore the scenic beauty of Portmarnock.

April Temperature in Portmarnock

April marks a delightful transition in Portmarnock, Ireland, where the chill of winter begins to recede, paving the way for mild, invigorating days. With minimum temperatures hovering around a crisp -1°C (31°F) and an average rising to 9°C (48°F), the month offers a refreshing reprieve from the cold. The maximum temperatures can reach a pleasant 19°C (67°F), hinting at the warmth to come in the following months. This pattern showcases a gradual warming trend, as April often serves as a bridge between the lingering cold of early spring and the more temperate days of summer ahead. It's a time when nature flourishes, inviting residents and visitors alike to enjoy the emerging greenery and brighter skies.

April Weather in Portmarnock: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Portmarnock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434445485358616157524745
Data source: Temperature data for Portmarnock 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.

April Precipitation in Portmarnock

April in Portmarnock sees a notable dip in precipitation, with 44 mm (1.7 in) of rain over 11 days, marking a significant decrease from the previous months. This trend of reduced rainfall shifts the focus towards the upcoming drier months of May and June, which typically experience higher totals yet fewer rainy days. Interestingly, April's precipitation reflects a mild break in the early spring deluge, allowing for more sunshine to peek through the clouds, hinting at the lush greenery that characterizes the Irish landscape as it transitions into summer. As the season progresses, both the frequency and intensity of rainfall tend to climb, but April serves as a gentle reminder of the balance between rain and sunshine that Portmarnock experiences.

April Precipitation Trends in Portmarnock

The chart displays monthly precipitation patterns in Portmarnock, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec537373446269739570799385
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Portmarnock

In April, Portmarnock experiences a slight dip in humidity at 85%, mirroring the levels of January and May. This month marks a continuation of the generally high humidity that characterizes the region, with consistently elevated percentages throughout the year, peaking at 87% in October. Notably, the spring months display a stable humidity trend, with figures hovering around the mid-80s, providing a refreshing yet moist atmosphere as Ireland shakes off the chill of winter. As the seasons transition, the humidity remains consistently high, with only minor fluctuations, highlighting Portmarnock's coastal climate.

April Average Humidity in Portmarnock

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

April UV Index in Portmarnock

In April, Portmarnock, Ireland, begins to experience a noticeable shift in sunlight intensity, with a UV Index of 5, placing it in the moderate exposure category. This marks an increase from March’s UV Index of 4, highlighting the arrival of spring. With recommended burn time dropping to just 30 minutes, it's essential for residents and visitors to take precautions during peak sunlight hours. As we move into May, the UV Index spikes further to 7, indicating a transition to high exposure, which further emphasizes the importance of UV protection as the days get longer and sunnier. For those planning outdoor activities, staying informed about the UV Index trends can ensure a safer and more enjoyable experience. For more information, check the detailed Portmarnock UV Index.

Maximum UV Index Levels in Portmarnock for April

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

April Sunshine in Portmarnock

April in Portmarnock, Ireland, marks a significant shift as the days grow longer and sunnier. With 308 hours of sunshine, this month outshines the preceding months, showcasing a remarkable leap from 190 hours in March. The trend continues into May, which boasts an impressive 385 hours, indicating a warm embrace of spring that prepares the way for summer. The sunshine gradually tapers off into the following months, with June and July still maintaining a strong presence, but the glowing peak of April heralds a joyful transition into brighter days ahead. This gradual increase in daylight fosters a vibrant atmosphere that encourages outdoor adventures and community gatherings, making Portmarnock a delightful destination for those seeking the charm of Irish springtime.

Monthly Sunshine Duration in Portmarnock: April Highlighted

The April sunshine duration represents the total number of hours Portmarnock experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec80h145h190h308h385h379h377h329h288h226h114h91h
Data source: Portmarnock April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Portmarnock During April

April in Portmarnock, Ireland, marks a significant shift in the weather patterns, bringing an impressive 44% chance of sunny days compared to the winter months. This notable increase contrasts sharply with the dreariness of January and February, which hover around 27% and 21% respectively. As spring unfolds, the likelihood of sunshine reaches its peak, offering a welcome respite from the gloom of earlier months. While May sees a slight dip to 33%, April stands out as an essential month for sun seekers, hinting at the promise of brighter days ahead and the vibrant renewal of nature. With a substantial leap in sunny weather, April invites locals and visitors alike to revel in the beauty of the season.

Percentage of Sunny Days in April in Portmarnock

The chart illustrates the percentage of sunny days in Portmarnock throughout the year, with April 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 Portmarnock experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%21%22%44%33%23%30%23%21%20%26%23%
Data source: Portmarnock April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Portmarnock in April

As spring unfolds in Portmarnock, Ireland, April brings a delightful increase in daylight, extending to a generous 14 hours. This surge marks a significant leap from the 11 hours of sunlight enjoyed in March, heralding the seasonal transition towards longer days. Following a pattern of gradual growth, daylight hours reach their peak by June, with 16 hours illuminating the landscape. This trend of increasing sunlight from winter through spring not only enhances the outdoor experience but also uplifts spirits, making April an especially vibrant month in the yearly cycle. As the days become longer, there's a palpable sense of renewal that encourages exploration and connection with nature.

Average Daylight Hours in Portmarnock for April

The chart illustrates the variation in daylight duration in Portmarnock throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 5m9h 48m11h 54m14h 3m15h 56m16h 56m16h 24m14h 42m12h 37m10h 29m8h 34m7h 31m
Data source: Portmarnock daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Portmarnock

In April, Portmarnock experiences a noticeable dip in average wind speeds, plummeting to 3.5 m/s (8 mph)—the calm before the storm of summer. This gentle breeze is a stark contrast to the gustier months of February and November, where winds reach 6.0 m/s (13 mph) and 4.9 m/s (11 mph), respectively. Interestingly, while the wind tends to pick up again in May and linger slightly higher through the summer months, April's milder conditions create a refreshing atmosphere, perfect for enjoying the budding nature of spring. This seasonal shift not only highlights April's character but also sets the stage for the changing rhythms of weather as the year progresses.

Average April Wind Speed in Portmarnock

The chart displays monthly wind speed patterns in Portmarnock, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.66.04.83.5 m/s3.93.72.83.63.54.84.95.0
Data source: Portmarnock April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Portmarnock Compares to Other Months

The weather in Portmarnock changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April'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.

April and January weather exhibit notable differences despite having similar humidity levels of 85%. In April, temperatures range from a minimum of -1°C (31°F) to a maximum of 19°C (67°F), with an average of 9°C (48°F), making it generally warmer than January, which has a minimum of -3°C (27°F) and a maximum of 14°C (58°F) with an average of 6°C (43°F). Additionally, April experiences less precipitation, averaging 44 mm (1.7 in) over 11 days, compared to January's 53 mm (2.1 in) over 10 days. For more detailed information, you can visit Portmarnock weather in January.

When comparing the weather of April and February, one can see distinct variations. April typically sees a milder temperature range, with a minimum of -1°C (31°F) and an average of 9°C (48°F), whereas February tends to be slightly colder, with temperatures dipping to a minimum of -2°C (29°F) and an average of 7°C (44°F). Precipitation levels are also different; April receives about 44 mm (1.7 in) of rain over 11 days, while February experiences more significant rainfall, totaling 73 mm (2.9 in) across 14 days. Humidity remains quite high in both months, with February at 86% and April at 85%. Overall, April offers more pleasant conditions compared to the chillier and wetter February. For more details, you can check Portmarnock weather in February.

April generally brings milder temperatures compared to March, with average highs reaching 19°C (67°F) compared to March's maximum of 16°C (62°F). The minimum temperatures in April are also slightly warmer, averaging -1°C (31°F) compared to March's -3°C (26°F). However, April experiences less precipitation, totaling 44 mm (1.7 in) over 11 days, while March sees higher rainfall amounts of 73 mm (2.9 in) over 14 days. Humidity remains quite similar, with April at 85% and March slightly higher at 86%. For a more detailed comparison of March weather in Portmarnock, you can visit Portmarnock weather in March.

April and May exhibit a noticeable transition in weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 19°C (67°F), with an average of 9°C (48°F). The month receives 44 mm (1.7 in) of precipitation over 11 days, coupled with high humidity at 85%. In contrast, May sees a slight increase in temperatures, with minimums of 1°C (34°F), reaching a maximum of 22°C (72°F) and an average of 12°C (53°F). However, May is wetter with 62 mm (2.4 in) of rain over 12 days and slightly lower humidity at 83%. For further details, you can check Portmarnock weather in May.

April and June present notable contrasts in weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a comfortable maximum of 19°C (67°F), with an average of 9°C (48°F). The month typically sees about 44 mm (1.7 in) of precipitation spread over 11 days. In contrast, June warms up significantly, with minimum temperatures starting at 7°C (44°F) and reaching a pleasant maximum of 25°C (77°F), resulting in an average of 15°C (58°F). Rainfall also increases in June, totaling around 69 mm (2.7 in) and occurring on 13 days. Interestingly, both months share a humidity level of 85%, giving the air a similar feel. For more detailed insights, you can visit Portmarnock weather in June.

April and July exhibit distinct contrasts in weather patterns. In April, the average temperature is a mild 9°C (48°F), with nighttime lows dipping to a chilly -1°C (31°F) and daytime highs reaching a pleasant 19°C (67°F). The month experiences frequent rainfall, with around 44 mm (1.7 in) falling over 11 days, paired with a high humidity level of 85%. In contrast, July sees a noticeable rise in temperatures, boasting an average of 16°C (62°F) and highs peaking at 27°C (80°F). However, it also brings increased precipitation, averaging 73 mm (2.9 in) across 12 days, while the humidity remains high at 86%. For more detailed information on July weather in Portmarnock, you can visit Portmarnock weather in July.

April and August present quite a contrast in weather conditions. In April, temperatures range from a chilly minimum of -1°C (31°F) to a mild maximum of 19°C (67°F), with an average temperature of 9°C (48°F). The month sees around 44 mm (1.7 in) of precipitation over approximately 11 days, maintaining a high humidity of 85%. In contrast, August offers warmer temperatures, with a minimum of 8°C (47°F) and a maximum reaching 23°C (74°F), leading to an average of 16°C (61°F). However, it’s also wetter, with around 95 mm (3.7 in) of rain falling across 16 days, while humidity remains steady at 85%. For more detailed information about the weather in August, check out Portmarnock weather in August.

April and September present distinct weather patterns as they mark the transition between winter and autumn. In April, temperatures range from a chilly minimum of -1°C (31°F) to a pleasant maximum of 19°C (67°F), with an average of 9°C (48°F). The month experiences moderate precipitation, totaling 44 mm (1.7 in) over 11 rainy days, accompanied by a high humidity level of 85%.

Conversely, September offers a milder climate, with temperatures starting at a minimum of 4°C (39°F) and peaking at 22°C (72°F), averaging around 14°C (57°F). This month sees a higher precipitation total of 70 mm (2.7 in) spread across 13 days, and the humidity is slightly elevated at 86%. For more details on September weather in Portmarnock, visit Portmarnock weather in September.

April and October exhibit strikingly similar maximum temperatures, both reaching up to 19°C (67°F); however, April tends to have cooler mornings with a minimum temperature of -1°C (31°F) compared to October's slightly warmer 2°C (36°F). In terms of average temperatures, April is a bit chillier with an average of 9°C (48°F) versus October's 11°C (53°F). While April sees a total precipitation of 44 mm (1.7 in) over 11 days, October is wetter, with 79 mm (3.1 in) of rainfall spread across 13 days. Humidity levels also rise slightly in October, averaging 87% compared to April's 85%. For more detailed insights, check out Portmarnock weather in October.

In April, the weather begins to warm up with average temperatures ranging from a chilly -1°C at night to a pleasant 19°C during the day. While the month sees about 44 mm of precipitation over 11 days, the humidity remains relatively high at 85%. In contrast, November experiences cooler temperatures with daily averages that peak at 15°C and dip to -1°C at night. The month is also wetter, with a total of 93 mm of rainfall across 14 days, and humidity slightly increasing to 86%. For a more detailed exploration of November weather, check out Portmarnock weather in November.

April and December exhibit notable differences in weather patterns despite their proximity in the calendar year. April generally offers milder temperatures, with averages around 9°C (48°F) and a maximum of 19°C (67°F), while December remains cooler, averaging 7°C (45°F) and peaking at 13°C (56°F). Precipitation is more sparse in April, with around 44 mm (1.7 in) over 11 days, compared to December's wetter conditions, which see around 85 mm (3.4 in) across 14 days. Humidity levels are quite similar, with April at 85% and December slightly lower at 84%. For a detailed look at December's weather, you can visit Portmarnock weather in December.

Compare Portmarnock's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Portmarnock

April in Portmarnock brings a notable transition in weather as the chill of winter begins to fade. The temperatures gradually rise, providing a refreshing balance between crisp mornings and pleasantly warm afternoons. However, the month is still marked by frequent rainfall, with about a third of the days seeing some precipitation, elevating humidity levels to around 85%. This compelling mix of conditions creates a unique environment, a contrast to the more stable and warmer days of the summer months. For a closer look at how Portmarnock’s weather unfolds throughout the year, visit Portmarnock Climate.