Last updated: March 17, 2025
May in Castlebar, Ireland is characterized by a varied climate, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 25°C (77°F). The average temperature rests at 11°C (53°F), providing a mild backdrop for outdoor activities. However, residents and visitors should prepare for frequent rain, as the month sees about 74 mm (2.9 in) of precipitation over 14 days, contributing to a high humidity level of 83%. This blend of warmth and moisture makes May an intriguing time to experience the lush landscapes of Castlebar.
As May arrives in Castlebar, Ireland, temperatures begin to embrace the warmth of spring, offering a delightful shift from the chill of earlier months. With minimums hovering around -2°C (29°F) and averages reaching a pleasant 11°C (53°F), the landscape transforms as days grow longer and brighter. The highlight of the month is the maximum temperature soaring to 25°C (77°F), providing an opportunity for outdoor adventures and exploration. This upward trend in warmth marks a significant leap from April’s cooler days, establishing May as a time of renewal and vibrancy, perfect for enjoying the scenic beauty of County Mayo.
In May, Castlebar experiences a moderate precipitation level of 74 mm (2.9 in), typical for the spring season as the weather transitions toward summer. With 14 days of rainfall, May strikes a balance between the wetter months preceding it and the drier ones that follow, offering a lively yet manageable mix of rain. This slight dip in precipitation compared to the earlier months helps support the vibrant greenery that characterizes the Irish landscape. As the average temperatures rise, the combination of periodic rain and blooming flora creates a picturesque setting, emphasizing the beauty of May in Castlebar.
In Castlebar, Ireland, May brings a subtle shift in humidity, dropping to 83%, a refreshing change compared to the higher levels seen in the preceding months. This downward trend in humidity from January through April signals the gradual onset of summer. As the temperatures begin to rise, Castlebar enjoys a slight reprieve from the moister air that characterizes the earlier months of the year. Interestingly, the humidity levels remain consistent into June, before ticking up again in the hotter months of July and August, suggesting a typical Irish climate where freshness gives way to warmth and the lush greenery thrives. Following a mid-summer peak, humidity climbs again toward year’s end, highlighting Castlebar's unique weather patterns that embrace both the vibrant energy of summer and the cozy embrace of autumn.
As spring gives way to summer, May sees a significant rise in the UV Index in Castlebar, Ireland, reaching 7, which falls into the high exposure category. This notable jump from April’s moderate index of 5 means that residents and visitors should take extra precautions while enjoying outdoor activities, as the burn time decreases to just 25 minutes. With the sun becoming increasingly powerful, May heralds the start of a season where sun safety becomes paramount. It's essential to stay informed about UV levels—explore more with the comprehensive Castlebar UV Index guide to ensure your skin stays protected!
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In Castlebar, Ireland, May truly shines as a beacon of brightness, boasting 396 hours of sunshine—more than any other month of the year. Following a steady increase from the mere 72 hours in January, the sunlight steadily accumulates, culminating in May's radiance. The transition from spring into summer not only brings warmth but also an exhilarating surge in daylight, as seen in the leap from 316 hours in April to May’s vibrant count. Although June and July remain comparably sunny, May holds a distinct position as the premier month for sun enthusiasts, paving the way for the lush landscapes and outdoor adventures that define the vibrant Irish summer. As the year progresses towards autumn, sunlight gradually diminishes, yet May's golden days continuously evoke the promise of nature in full bloom.
In Castlebar, Ireland, the likelihood of sunny weather in May reflects an interesting trend in the region's climate. With a 35% chance of sunshine, May stands out as one of the brighter months, just slightly below the more favorable April, which boasts a 40% chance. This marks a significant increase compared to the chilly early months of the year—where the chances hover around 14-27%—indicating a welcomed transition into spring. Although the sun's presence diminishes again in the summer months, June through August seeing only 16-23%, May remains a pivotal moment where the promise of brighter days begins to shine through, offering a refreshing respite after the long winter.
As spring gives way to summer in Castlebar, Ireland, May stands out with an impressive 15 hours of daylight, marking a delightful peak in brightness and warmth. This month is a natural progression from April's 14 hours, reflecting the gradual lengthening of days since the 8 hours of light found in January. Following May, daylight reaches its zenith in June with 16 hours, but it’s in May that residents truly begin to revel in the longer evenings and vibrant outdoor activities. The trend of increasing daylight continues to uplift spirits, offering a vivid backdrop for the blooming landscapes that characterize this time of year. As summer approaches, the gradual ebb of daylight later in the year will remind us of the sunlit moments we cherished in May.
In May, Castlebar experiences a gentle breeze with an average wind speed of 3.8 m/s (8 mph), reflecting a slight uptick from April's calmer conditions. As spring unfolds, the winds remain consistent, marking a transitional phase before the summer months. While January and February boast higher gusts, May's breezes are among the most pleasant of the year, contributing to the region’s vibrant outdoor activities. This consistent wind trend, alongside rising temperatures, encourages both locals and visitors to enjoy the lush greenery and scenic landscapes that Castlebar has to offer. As the year progresses into the warmer months, the shifting wind patterns set the stage for a delightful Irish summer.
The weather in Castlebar changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Castlebar and find detailed weather information for every month.
May and January present quite contrasting weather conditions. In May, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant average of 11°C (53°F) and can reach a maximum of 25°C (77°F). This month sees about 74 mm (2.9 in) of precipitation over approximately 14 days, with humidity levels around 83%. In contrast, January experiences slightly cooler temperatures, with a minimum of -3°C (27°F) and an average of 6°C (43°F), peaking at 14°C (57°F). The month is wetter, with 87 mm (3.4 in) of precipitation spread over 13 days and higher humidity at 88%. For more details, check out Castlebar weather in January.
When comparing the weather between February and May, a clear shift in temperature and precipitation emerges. In May, temperatures range from a minimum of -2°C (29°F) to a pleasant maximum of 25°C (77°F), with an average temperature of 11°C (53°F). In contrast, February sees slightly cooler conditions, with a minimum of -3°C (26°F) and a maximum of only 15°C (59°F), averaging 6°C (43°F). Furthermore, February experiences significantly higher precipitation, measuring 135 mm (5.3 in) over 18 days, compared to May's 74 mm (2.9 in) over 14 days. The humidity is also marginally higher in February at 88% compared to May's 83%. For more detailed weather insights, check Castlebar weather in February.
In comparing the weather in March and May, we observe notable differences in temperature and precipitation. March features cooler temperatures, with a minimum of -5°C (24°F), an average of 7°C (44°F), and a maximum of 17°C (62°F). It also experiences higher precipitation levels, totaling 107 mm (4.2 in) over 16 days and a humidity of 87%. In contrast, May warms up significantly, offering a minimum of -2°C (29°F) and an average of 11°C (53°F), peaking at 25°C (77°F). Additionally, May sees lower precipitation amounts of 74 mm (2.9 in) across 14 days, with a humidity of 83%. For a closer look at March's weather patterns, you can visit Castlebar weather in March.
In comparing the weather between April and May, May tends to be warmer and more variable. The minimum temperatures remain similar, with both months experiencing lows around -2°C (29°F) to -2°C (28°F), but May boasts a higher average temperature of 11°C (53°F) compared to April's 9°C (48°F). May also sees warmer maximum temperatures reaching up to 25°C (77°F), while April peaks at 20°C (69°F).
In terms of precipitation, May records 74 mm (2.9 in) over 14 days, slightly more than April's 63 mm (2.5 in) over 11 days. Humidity remains relatively high in both months, with May at 83% and April at 86%. For more specific details about April weather, you can visit Castlebar weather in April.
In May, temperatures range from a minimum of -2°C (29°F) to a maximum of 25°C (77°F), with an average of 11°C (53°F). The month experiences 74 mm (2.9 in) of precipitation over 14 days, with humidity levels reaching 83%. In contrast, June sees slightly warmer weather, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 28°C (84°F) and an average of 13°C (56°F). Precipitation increases to 87 mm (3.4 in) over 17 days, while humidity remains consistent at 83%. For more detailed information, check the Castlebar weather in June.
In May, temperatures range from a chilly -2°C (29°F) to a pleasant average of 11°C (53°F), peaking at 25°C (77°F). The month sees a total precipitation of 74 mm (2.9 in) spread over 14 days, with humidity levels hovering around 83%. In contrast, July experiences milder temperatures with a minimum of 7°C (44°F), an average of 15°C (59°F), and a maximum reaching 28°C (83°F). Rainfall increases slightly to 91 mm (3.6 in) over 15 days, and humidity remains comparable at 85%. For more detailed insights about July weather, you can check Castlebar weather in July.
When comparing the weather in May and August, notable differences emerge. May tends to be cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 25°C (77°F) and an average of 11°C (53°F). It also experiences a moderate amount of precipitation, totaling 74 mm (2.9 in) over about 14 rainy days and an average humidity of 83%. In contrast, August is generally warmer, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 23°C (74°F) and an average of 15°C (59°F). However, it sees more rainfall, with 133 mm (5.3 in) occurring over 21 days, and slightly higher humidity at 85%. For more specific details about August weather, you can check Castlebar weather in August.
May and September share similar maximum temperatures, both reaching up to 25°C (77°F), but the overall feel of the months differs significantly. In May, temperatures start from a minimum of -2°C (29°F) and average around 11°C (53°F), accompanied by lower humidity at 83% and less precipitation, totaling 74 mm (2.9 in) over about 14 days. In contrast, September sees slightly higher minimum temperatures at 2°C (35°F) and averages around 13°C (56°F), with increased humidity at 88% and more rainfall, totaling 92 mm (3.6 in) over 17 days. For more detailed insights into September's climate, check out Castlebar weather in September.
May typically features milder temperatures, ranging from a minimum of -2°C (29°F) to a maximum of 25°C (77°F), with an average of 11°C (53°F). This month sees around 74 mm (2.9 in) of precipitation over approximately 14 days, and humidity hovers at 83%. In contrast, October presents cooler conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 20°C (68°F) and an average of 10°C (51°F). Rainfall is more substantial in October, amounting to 127 mm (5.0 in) over about 20 days, accompanied by higher humidity levels at 91%. For detailed information, check out Castlebar weather in October.
In comparing the weather between May and November, we observe notable differences in temperature and precipitation patterns. May typically features a wider temperature range, with minimums dipping to -2°C (29°F) and maximums reaching up to 25°C (77°F), resulting in an average of 11°C (53°F). In contrast, November's temperatures are cooler, averaging 8°C (46°F) with maximums only reaching 15°C (59°F), while still experiencing the same minimum of -2°C (29°F).
Precipitation is more frequent in November, with a total of 110 mm (4.3 inches) spread over 17 days compared to May’s 74 mm (2.9 inches) over 14 days. The humidity also rises in November, averaging 92% versus May's 83%. For a more detailed look at November weather in Castlebar, you can visit Castlebar weather in November.
In May, temperatures in Castlebar show a welcoming range, with minimums around -2°C (29°F) and maximums reaching up to 25°C (77°F), making it more conducive to outdoor activities. Average temperatures hover at 11°C (53°F), complemented by moderate precipitation of 74 mm (2.9 in) over 14 days, resulting in a humidity level of 83%. In contrast, December brings a chillier experience, with temperatures dipping slightly lower, featuring minimums at -3°C (27°F) and maximums of only 13°C (55°F). This month sees increased precipitation, totaling 121 mm (4.8 in) across 19 days, and a higher humidity rate of 89%. For more details, check out Castlebar weather in December.
As spring blossoms into summer, May in Castlebar reveals a delightful contrast to the cooler months preceding it. With warmer temperatures peaking at a pleasant 25°C, residents and visitors alike enjoy longer daylight hours, embracing the vibrant greenery that emerges. However, the month is not without its characteristic showers, as May sees increased precipitation spread over 14 days, contributing to the region's lush landscape. Despite the higher humidity at 83%, the overall atmosphere is invigorating, making it an ideal time for outdoor activities and exploring the natural beauty of County Mayo. For more insights on what to expect throughout the year, visit Castlebar Climate.