August Weather in Castlewellan, United Kingdom

Last updated: March 17, 2025

August in Castlewellan, United Kingdom, presents a varied climate experience, with maximum temperatures reaching 21°C (69°F) and an average of 15°C (59°F), offering mild summer days. However, the weather can be quite soggy, with an average precipitation of 120 mm (4.7 in) spread over 18 rainy days, resulting in a humid atmosphere at 86%. Visitors should be prepared for a mix of sunshine and rainfall, making it essential to pack accordingly for this beautiful yet unpredictable summer month.

August Temperature in Castlewellan

In Castlewellan, United Kingdom, August marks the peak of summer with temperatures that reflect a delightful warmth compared to the chill of earlier months. With minimums hovering around 9°C (48°F) and averages reaching 15°C (59°F), the climate is inviting for outdoor activities. The maximum temperatures can climb to a comfortable 21°C (69°F), providing ideal conditions for exploring this picturesque area. As the weather transitions from the cooler July patterns, August showcases a significant rise in temperatures, hinting at the lush landscapes and vibrant activities that thrive during this period. Overall, it’s a month that embodies the essence of summer warmth while gracefully slipping towards the gentle beckoning of autumn.

August Weather in Castlewellan: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Castlewellan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434344475257605956524744
Data source: Temperature data for Castlewellan 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.

August Precipitation in Castlewellan

August in Castlewellan, United Kingdom, marks a notable peak in precipitation, with 120 mm (4.7 in) of rainfall over the month. This substantial amount is accompanied by 18 rainy days, highlighting the wettest period of the year and contributing significantly to the region's lush greenery. As summer draws to a close, the precipitation in August is a sharp increase from the previous months and sets the tone for the wetter fall months ahead. Interestingly, this month’s rainfall also notably surpasses July's total of 85 mm (3.3 in), indicating a shift toward the more typical British weather patterns. Overall, August's combination of increased rainfall days and higher precipitation totals underscores a transitional phase in Castlewellan's climate, preparing the landscape for the changing seasons ahead.

August Precipitation Trends in Castlewellan

The chart displays monthly precipitation patterns in Castlewellan, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec6899924766788512083104113104
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Castlewellan

August in Castlewellan, United Kingdom, experiences a humidity level of 86%, reflecting a consistent pattern seen throughout the summer months. Following a gradual rise from 82% in May, the humidity remains stable into July and August, highlighting the region’s characteristic dampness during this warm season. As temperatures begin to shift into autumn, humidity levels are expected to creep upwards, peaking at 90% in November. This trend suggests that while August maintains a comfortable level of moisture, the gradual increase in humidity throughout the year signifies Castlewellan’s reputation for a lush and green landscape, especially as it transitions into the wetter months ahead.

August Average Humidity in Castlewellan

This chart illustrates the average monthly humidity levels in Castlewellan, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Castlewellan

In August, Castlewellan experiences a UV Index of 6, placing it in the high exposure category with a burn time of 25 minutes for fair-skinned individuals. This marks a slight decrease from the peak summer months of June and July, which recorded a very high UV Index of 8, necessitating more stringent sun protection measures. As we transition into autumn, the UV levels begin to dip, signalling the importance of adjusting sun safety habits. It's a reminder that even in late summer, the sun's rays can be potent, making it essential to stay informed about local conditions. For more detailed insights, explore the Castlewellan UV Index.

Maximum UV Index Levels in Castlewellan for August

The chart shows the monthly maximum UV Index (UVI) for Castlewellan in August, 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578865321
Data source: Castlewellan August 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.

August Sunshine in Castlewellan

In August, Castlewellan basks in 349 hours of radiant sunshine, making it a delightful summer month. The gradual increase in sunshine hours throughout the spring and peak summer months reveals a striking trend, starting from a modest 81 hours in January and culminating in the lush peak of 403 hours in May. Although there’s a slight decline in hours from July's peak, August still enjoys ample sunshine, contributing to the area's vibrant atmosphere. As summer transitions into autumn, the daylight hours begin to taper off, with September seeing a decrease to 295 hours, yet the lingering warmth of August continues to inspire outdoor adventures and scenic explorations throughout this picturesque region.

Monthly Sunshine Duration in Castlewellan: August Highlighted

The August sunshine duration represents the total number of hours Castlewellan experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec81h150h209h322h403h394h399h349h295h232h115h87h
Data source: Castlewellan August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Castlewellan During August

In Castlewellan, the likelihood of sunny weather reaches its peak in April with 43%, but by August, this figure falls to a more modest 23%. This downward trend reflects a pattern of diminishing sunshine as summer progresses, with July also experiencing a decline to 32%. Interestingly, despite a slight rise in sunny chances during the spring months, August appears to signal the onset of autumn's influence, which brings an overall reduction in bright days. With days becoming increasingly gray leading into September, visitors and locals alike may want to relish the lingering summer sun while they still can.

Percentage of Sunny Days in August in Castlewellan

The chart illustrates the percentage of sunny days in Castlewellan throughout the year, with August 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 Castlewellan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%22%21%43%35%24%32%23%21%19%23%16%
Data source: Castlewellan August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Castlewellan in August

In August, Castlewellan basks in an appealing 14 hours of daylight, a gentle decline from the sun-drenched heights of June's 17 hours. The trend throughout the summer months showcases a gradual tapering after June's peak, with July holding firm at 16 hours before this slight reduction. As the year progresses into September and October, daylight is noticeably curtailed, dropping to 12 and 10 hours, respectively. This progression emphasizes the seasonal shift, where the allure of long summer days gives way to the shorter, cozier moments of autumn. Overall, August provides a sweet spot of lingering daylight, making it an ideal time for outdoor pursuits against the backdrop of fading summer.

Average Daylight Hours in Castlewellan for August

The chart illustrates the variation in daylight duration in Castlewellan throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 58m9h 45m11h 54m14h 6m16h 3m17h 5m16h 31m14h 46m12h 38m10h 27m8h 28m7h 24m
Data source: Castlewellan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Castlewellan

In August, Castlewellan experiences a gentle breeze, with an average wind speed of 3.7 m/s (8 mph). This marks a subtle increase from the notably calm July, which recorded its lowest winds at 2.9 m/s (7 mph). As summer wanes, the wind begins to pick up slightly, hinting at the shifting seasons ahead. Interestingly, this trend of fluctuating winds continues into September, reinforcing the transition as average speeds rise to 3.9 m/s (9 mph). Overall, August serves as a serene interlude before the stronger winds of autumn emerge, creating a perfect backdrop for outdoor activities amidst the luscious landscapes of the UK.

Average August Wind Speed in Castlewellan

The chart displays monthly wind speed patterns in Castlewellan, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.06.95.33.94.44.22.93.7 m/s3.95.45.55.6
Data source: Castlewellan August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Castlewellan Compares to Other Months

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

August and January present contrasting weather patterns. In August, the temperature ranges from a mild 9°C (48°F) to a pleasant max of 21°C (69°F), while January experiences colder temperatures, with a minimum of -2°C (29°F) and a maximum of 13°C (56°F). Precipitation is generally higher in August, accumulating 120 mm (4.7 in) over 18 days compared to January's 68 mm (2.7 in) over 12 days. Furthermore, humidity levels remain notably high in both months, with August at 86% and January slightly higher at 87%. For more detailed insights, check out Castlewellan weather in January.

August and February present contrasting weather conditions. In August, temperatures range from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), with an average of 15°C (59°F). The month sees significant rainfall, with 120 mm (4.7 in) over 18 days, and humidity remains high at 86%. In contrast, February is much colder, featuring temperatures that fluctuate from -1°C (31°F) to a maximum of 12°C (55°F), with an average of 6°C (43°F). Rainfall in February is slightly less, at 99 mm (3.9 in) across 17 days, yet the humidity remains consistent at 86%. For more detailed insights into the February weather, you can refer to Castlewellan weather in February.

August and March present distinct weather patterns, marked by notable differences in temperature and precipitation. In August, temperatures range from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), with an average of 15°C (59°F) and significant precipitation of 120 mm (4.7 in) spread over 18 days. In contrast, March experiences cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 14°C (58°F), averaging just 7°C (44°F). Precipitation in March is also less, totaling 92 mm (3.6 in) over 16 days, while maintaining a consistent humidity of 86% in both months. For more detailed information about March weather specifically, you can refer to Castlewellan weather in March.

When comparing the weather in August and April, it is evident that August is significantly warmer and wetter. In August, temperatures range from a minimum of 9°C to a maximum of 21°C, with an average of 15°C, while April sees cooler temperatures, with a minimum of 0°C and a maximum of 16°C, averaging just 8°C. Additionally, August experiences much higher precipitation, totaling 120 mm over 18 days, compared to April's 47 mm over 9 days. Humidity levels remain similar, with August at 86% and April at 85%. For more detailed insights, you can check Castlewellan weather in April.

When comparing the weather in May and August, several key differences stand out. August tends to be warmer, with average temperatures reaching 15°C (59°F) compared to May's cooler average of 11°C (52°F). Additionally, August experiences higher maximum temperatures of 21°C (69°F), while May peaks at 19°C (67°F). Precipitation is more pronounced in August, with 120 mm (4.7 in) falling over 18 days, in contrast to May's 66 mm (2.6 in) over 12 days. Humidity is also slightly higher in August at 86%, compared to 82% in May. For a detailed look at May's weather, you can visit Castlewellan weather in May.

In comparing the weather between June and August, we observe some notable differences. August tends to be slightly warmer, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 21°C (69°F), while June's averages are a tad cooler, with temperatures ranging from 7°C (44°F) to 24°C (75°F). Additionally, August experiences more precipitation, totaling 120 mm (4.7 in) over 18 days, compared to June's 78 mm (3.1 in) over 14 days. The humidity remains high in both months, with August at 86% and June at 84%. For more detailed insights, you can check Castlewellan weather in June.

In comparing the weather of August and July, we can see some notable differences. August tends to be cooler, with average temperatures peaking at 21°C (69°F), compared to July's maximum of 24°C (76°F). Both months share the same minimum temperature of 9°C (48°F) and an average temperature around 15°C, but July typically feels a bit warmer overall. Precipitation is more significant in August, with 120 mm (4.7 in) of rain spread over 18 days, in contrast to July's 85 mm (3.3 in) over 14 days. Interestingly, both months experience the same level of humidity at 86%, ensuring a consistently moist atmosphere throughout the summer. For more details specifically about July's weather, you can visit Castlewellan weather in July.

In comparing the weather of August and September, August typically experiences slightly warmer temperatures with a minimum of 9°C (48°F) and an average of 15°C (59°F), peaking at 21°C (69°F). In contrast, September brings cooler temperatures, with a minimum of 5°C (41°F) and an average of 13°C (56°F), reaching a maximum of 20°C (69°F). Precipitation is more abundant in August, totaling 120 mm (4.7 in) over 18 days, while September sees less rain, with 83 mm (3.3 in) across 16 rainy days. Humidity remains fairly high in both months, at 86% in August and rising slightly to 88% in September. For more detailed information, you can visit Castlewellan weather in September.

In comparing August and October weather, August tends to be warmer with average temperatures reaching up to 15°C (59°F) and a maximum of 21°C (69°F). It also experiences higher humidity at 86% and more precipitation, totaling 120 mm (4.7 in) over 18 days. In contrast, October sees a notable drop in temperatures, with an average of 11°C (52°F) and a maximum of 18°C (64°F), while the humidity slightly increases to 89%. Precipitation in October is slightly lower at 104 mm (4.1 in) over 17 days. For more specific details about October weather, you can visit Castlewellan weather in October.

When comparing the weather in August and November, it becomes clear that August is generally warmer and slightly wetter. August boasts an average temperature of 15°C (59°F), with maximums reaching 21°C (69°F), while November’s average drops significantly to 8°C (47°F), with highs of only 14°C (58°F). Precipitation levels are relatively close, with August receiving 120 mm (4.7 in) over 18 days compared to November's 113 mm (4.5 in) over 16 days. Additionally, humidity is slightly higher in November at 90%, compared to 86% in August. For more detailed information on November weather in Castlewellan, visit Castlewellan weather in November.

Comparing August and December weather reveals notable differences in temperature and precipitation patterns. In August, temperatures are significantly warmer, with a minimum of 9°C (48°F) and an average of 15°C (59°F), peaking at 21°C (69°F). The month also sees considerable precipitation, totaling 120 mm (4.7 in) over 18 days. In contrast, December experiences chillier conditions, with temperatures ranging from a minimum of 0°C (32°F) to an average of 7°C (44°F), and a maximum of 13°C (55°F). While December has slightly less precipitation at 104 mm (4.1 in) over 14 days, it maintains a consistent humidity level of 86% throughout both months. For more specific insights into December weather, visit Castlewellan weather in December.

Compare Castlewellan's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Castlewellan

August in Castlewellan brings a noticeable shift as summer starts to wane. With temperatures reaching a pleasant maximum of 21°C (69°F) and an average that hovers around 15°C (59°F), it offers a delightful warmth, albeit with the frequent presence of rain. This month sees substantial rainfall, with around 120 mm (4.7 in) spread across 18 days, making it one of the wetter months. The humidity lingers at a high 86%, adding to the muggy feel as the days grow shorter. Unlike the more stable and dry days of high summer, August presents a blend of warmth and showers, setting the stage for the cooler seasons ahead. For more insights into the weather patterns here, explore Castlewellan Climate.