Last updated: March 17, 2025
In December, Castlerock, United Kingdom experiences a cool and damp climate, with average temperatures hovering around 8°C (46°F) and peaking at a maximum of 12°C (54°F). The weather is characterized by a notable chill, with minimum temperatures dipping to 2°C (35°F). This month sees significant rainfall, accumulating to 166 mm (6.5 in) over 23 days, contributing to a high humidity level of 86%. Visitors can expect a moist atmosphere, perfect for a cozy retreat amidst the scenic coastal backdrop.
As winter sets in, Castlerock, United Kingdom experiences chilly December temperatures, with a minimum dipping to around 2°C (35°F) and an average hovering near 8°C (46°F). While this month marks one of the cooler points in the year, temperatures remain relatively mild compared to the coldest winter months, maintaining a maximum close to 12°C (54°F). Notably, December showcases a transition, where the end of the autumn warmth gives way to a sharper winter chill, yet overall, it doesn't stray far from the mild climate trends observed throughout the fall. Festive vibes and cozy sweater weather characterize the month, making it perfect for enjoying the holiday spirit amidst the cooler temperatures.
December in Castlerock sees a notable uptick in precipitation, with 166 mm (6.5 in) of rainfall over 23 days. This figures marks it as one of the wetter months of the year, just after the more lavishly drenched October and November. The trend reveals that as autumn transitions into winter, rainfall intensifies, suggesting a shift toward more persistent weather patterns. With December's precipitation outpacing the earlier months, residents and visitors alike encounter not only the beauty of wintery landscapes but also the challenges of increased wetness characteristic of this coastal region. The gradual rise from October through December highlights Castlerock's climate as ever dynamic, preparing for the chill of winter amidst the wettest days of the year.
In December, Castlerock experiences a notable shift in its humidity levels, recorded at 86%, which is consistent with the relatively high humidity trend seen in the preceding months. Following a peak in November at 90%, December marks a slight easing but remains elevated compared to the spring and summer months, where humidity fluctuated between 82% and 86%. This pattern suggests that winter's chill does not significantly diminish the dampness in the air, maintaining a characteristic moisture that is typical for the region. As the year draws to a close, the coastal climate of Castlerock continues to embrace a humid atmosphere, setting the stage for the more temperate conditions expected in the coming months.
As December settles in Castlerock, the UV Index drops to 1, maintaining its status as a low exposure month with a generous burn time of 45 minutes. This trend of diminishing UV levels continues from the earlier months, where the peak sun exposure occurs during June and July with indices reaching as high as 8. The overall pattern indicates a gentle decline from the higher UV levels of late spring and summer, transitioning into the cooler, overcast months of winter. With minimal risk, December presents a comfortable opportunity for those who enjoy outdoor activities without the worry of sunburn. For more detailed information, visit Castlerock UV Index.
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As December settles in Castlerock, the days are notably shorter, with an average of 81 hours of sunshine gracing the month. This marks a significant drop from the 117 hours recorded in November, reflecting the encroaching winter. The sunshine trend illustrates a gradual descent through the autumn months, beginning with 283 hours in September, before plummeting dramatically. Interestingly, this cycle is part of a larger pattern where sunshine peaks in late spring and summer, highlighted by 405 hours in May and consistent highs around 400 hours in July. The contrast paints a vivid picture of Castlerock's seasonal rhythm, where sun-drenched days give way to cozy winter evenings, inviting residents and visitors alike to embrace the charm of the season.
As December rolls in, the likelihood of sunny weather in Castlerock, United Kingdom, takes a noticeable dip, with only a 14% chance of seeing the sun. This trend is part of a broader pattern observed throughout the year, where the late autumn and winter months tend to offer less sunshine compared to spring and summer, with April peaking at a 43% chance of clear skies. In fact, December's sun probability is among the lowest, only slightly above the dreary prospects of October and November, both hovering at 16%. As the year draws to a close, residents and visitors can expect more overcast days, making those rare sunny moments even more precious.
In Castlerock, United Kingdom, the daylight duration experiences a notable fluctuation throughout the year, with December offering just 7 hours of sunlight. This marks a continuation of the downward trend that starts after the vibrant June, where the days peak at an impressive 17 hours. As autumn ushers in shorter days, November sees a slight dip to 8 hours before December settles back to the same length as January. The transition from the longer, sun-kissed days of spring and summer to the shorter, gloomier winter months highlights the seasonal rhythm of light in this picturesque coastal town. As the year winds down, December's limited daylight invites a cozy atmosphere, perfect for reflection and festive gatherings by the fire.
As December settles in over Castlerock, the winds begin to pick up, averaging 8.3 m/s (19 mph), which reflects a slight increase compared to the calmer summer months. This trend of escalating wind speeds can be observed as the year progresses, peaking in late winter months like February at 10.5 m/s (23 mph). Interestingly, December's winds are softer than the robust breezes of November, which saw an average of 9.3 m/s (21 mph). While winter brings a chill and a lively air, the wind speed in December hints at a transition, bridging the brisk conditions of fall with the more turbulent gusts that characterize early spring. The dynamic changes in wind patterns throughout the year paint a vivid picture of Castlerock's climate, where each month brings its own character, inviting both locals and visitors to embrace the unique charm of this windswept coastal town.
The weather in Castlerock changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Castlerock and find detailed weather information for every month.
In December, temperatures in Castlerock range from a minimum of 2°C (35°F) to a maximum of 12°C (54°F), with an average of 8°C (46°F). The month is characterized by significant precipitation, totaling 166 mm (6.5 in) over 23 days, contributing to a high humidity level of 86%. In contrast, January sees a slight decrease in average temperature, with a minimum of 2°C (36°F) and a maximum of 13°C (56°F), averaging 7°C (45°F). Precipitation drops to 109 mm (4.3 in) over 17 days, resulting in a slightly higher humidity of 87%. For more detailed weather information, visit Castlerock weather in January.
In December, temperatures range from a chilly 2°C (35°F) at night to a mild 12°C (54°F) during the day, with an average temperature of 8°C (46°F). This month sees considerable precipitation, totaling 166 mm (6.5 in) over 23 days, while humidity remains high at 86%. In contrast, February experiences slightly cooler nights with a minimum of 1°C (34°F) and a similar maximum temperature of 12°C (54°F), yet averages just 7°C (44°F). Precipitation also decreases to 132 mm (5.2 in) over 18 days, while humidity remains constant at 86%. For a detailed outlook on February weather, check Castlerock weather in February.
When comparing December and March weather, we see some notable differences. December tends to be slightly warmer, with average temperatures around 8°C (46°F), compared to March’s average of 7°C (45°F). However, March can experience cooler nights, dipping to a minimum of -1°C (31°F), while December's lows are around 2°C (35°F). Precipitation is also lighter in March, totaling 112 mm (4.4 in) over 18 days, compared to December's higher 166 mm (6.5 in) over 23 days. Both months share a high humidity level of 86%, making them feel more damp. For more details on the weather specific to March, you can check out Castlerock weather in March.
In December, the weather is characterized by cooler temperatures, with a minimum of 2°C (35°F) and an average of 8°C (46°F), peaking at a maximum of 12°C (54°F). This month also experiences significant precipitation, totaling 166 mm (6.5 in) over 23 days, resulting in a high humidity level of 86%. In contrast, April sees slightly milder conditions, with similar minimum temperatures and a slightly warmer average of 8°C (47°F) and maximum of 13°C (56°F). However, it enjoys much less rainfall, accumulating only 55 mm (2.2 in) over 12 days and maintaining a similar humidity of 85%. To explore more about the weather in April, check out Castlerock weather in April.
In December, the weather is considerably cooler, with average temperatures ranging from 2°C (35°F) to 12°C (54°F), and high humidity at 86%. The month also experiences significant precipitation, with about 166 mm (6.5 in) falling over 23 days, making it quite a wet and chilly time of year. In contrast, May brings milder temperatures, with an average range from 5°C (41°F) to 16°C (61°F) and lower humidity levels at 82%. Precipitation in May is also lighter, with only 72 mm (2.9 in) occurring over 13 days, allowing for more pleasant outdoor conditions. For more detailed information, you can refer to Castlerock weather in May.
When comparing the weather in December and June, December is notably cooler and wetter. In December, temperatures range from a minimum of 2°C (35°F) to a maximum of 12°C (54°F) with an average of 8°C (46°F). The month sees significant precipitation, totaling 166 mm (6.5 in) over 23 days, accompanied by high humidity levels at 86%. In contrast, June experiences milder temperatures, with a minimum of 8°C (47°F) and a maximum of 17°C (62°F), averaging around 12°C (54°F). The precipitation in June is lower at 105 mm (4.1 in) across 17 days, and humidity is slightly less at 84%. For more detailed information, you can check out Castlerock weather in June.
December and July present notably different weather patterns. December typically sees cooler temperatures ranging from a minimum of 2°C (35°F) to a maximum of 12°C (54°F), with an average of 8°C (46°F). In this month, precipitation is quite frequent, with 166 mm (6.5 in) falling over 23 days, contributing to a rather humid atmosphere with humidity levels at 86%.
In contrast, July enjoys milder weather, where temperatures range from a minimum of 11°C (52°F) to a maximum of 19°C (67°F), with an average of 14°C (57°F). The month is relatively drier, with only 110 mm (4.3 in) of rain over 17 days, but it still maintains the same humidity level of 86%. For more details, check out Castlerock weather in July.
December and August present quite distinct weather patterns. December's temperatures range from a chilly minimum of 2°C (35°F) to a comfortable maximum of 12°C (54°F), with an average of 8°C (46°F). In contrast, August enjoys milder conditions, with a minimum of 11°C (52°F) and a maximum of 18°C (66°F), averaging 14°C (58°F). Precipitation is also notably different; December sees significant rainfall of 166 mm (6.5 in) over 23 days, while August experiences slightly less at 146 mm (5.7 in) over 20 days. However, both months share a similar humidity level of 86%, creating a consistently damp atmosphere. For more details on the weather in August, check out Castlerock weather in August.
In comparing the weather between December and September, it’s evident that December is significantly colder. December's temperatures range from a minimum of 2°C (35°F) to a maximum of 12°C (54°F), with an average of 8°C (46°F), while September enjoys milder temperatures, with lows of 9°C (49°F) and highs reaching 17°C (64°F), averaging at 14°C (57°F). Precipitation also differs, as December receives more rainfall at 166 mm (6.5 in) over 23 days, compared to September's 117 mm (4.6 in) over 20 days. The humidity levels are quite similar, remaining high at 86% in December and 88% in September. For a detailed look at the weather specifics, you can visit Castlerock weather in September.
In comparing December and October weather, December tends to be cooler with average temperatures ranging from 2°C (35°F) to a maximum of only 12°C (54°F), while October enjoys a milder climate with averages between 5°C (42°F) and 16°C (62°F). Precipitation levels are slightly higher in December at 166 mm (6.5 in) over 23 days compared to October's 161 mm (6.3 in) over 24 days, indicating that both months are quite wet. Additionally, humidity is slightly lower in December at 86%, compared to October's 89%. For more details on October weather, you can visit Castlerock weather in October.
December and November weather show some notable differences. In December, the minimum temperature dips slightly to 2°C (35°F), while the average temperature is around 8°C (46°F), compared to November, which has a minimum of 4°C (40°F) and an average of 9°C (49°F). December also sees a higher total precipitation of 166 mm (6.5 in) compared to November's 156 mm (6.2 in), although both months experience rain on 23 days. Additionally, humidity is slightly lower in December at 86% compared to 90% in November. For more details on November's weather, you can visit Castlerock weather in November.
As December rolls into Castlerock, the weather ushers in a notable chill, distinguishing itself from the milder months of the year. With an average temperature hovering around 8°C, this month leans towards the cooler side, with frequent precipitation that graces us on nearly three-quarters of the days. The heightened humidity level of 86% adds to the crispness in the air, making it feel even brisker. In contrast to the drier spells of autumn, December speaks a language of moisture, wrapping the landscape in a lush, dreamy ambiance. For a deeper dive into how these patterns shape life in Castlerock throughout the year, check out Castlerock Climate.