August Weather in Carmarthen, United Kingdom

Last updated: March 17, 2025

August in Carmarthen, United Kingdom, presents a delightful mix of summer warmth and typical British weather. Temperatures soar to a maximum of 25°C (78°F), while the average rests comfortably at 16°C (61°F), dipping to a minimum of 9°C (49°F) during cooler nights. However, this month is also characterized by its considerable rainfall, with a total precipitation of 134 mm (5.3 in) spread over 19 days, resulting in a humid 73% average. Visitors can expect a charming blend of sun and showers, perfect for enjoying the lush green landscapes that Carmarthen is known for.

August Temperature in Carmarthen

In August, Carmarthen experiences a delightful peak in summer warmth, with daily temperatures typically ranging from a minimum of 9°C (49°F) to a comfortable maximum of 25°C (78°F). The average temperature hovers around 16°C (61°F), offering a pleasant respite from the cooler months. This month stands out with its relatively mild temperatures, following a gradual warming trend that began in May, where the mercury first crept into the teens. As summer moves toward its end, August serves as a transitional period, bridging the gap to the cooler autumn temperatures that begin to emerge in September. Overall, this month encapsulates the essence of British summertime, making it a fantastic time to explore the beautiful landscapes and rich history of Carmarthen.

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

The chart illustrates August temperature patterns in Carmarthen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434445485359626158544846
Data source: Temperature data for Carmarthen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Carmarthen

In August, Carmarthen experiences a notable peak in precipitation, with 134 mm (5.3 in) recorded over 19 days. This significant rainfall marks a continuation of the summer's wet trend, following closely behind July's 91 mm, showcasing a rise in both amount and frequency as the month progresses. The increased precipitation during August often suggests a transition as the region prepares for the wetter months ahead, reflecting the patterns seen in preceding and subsequent months like September and October, which also have substantial rainfall. Thus, while summer typically conjures images of sunshine, August in Carmarthen remains a reminder of the region's moist maritime climate, making it one of the wetter months of the year.

August Precipitation Trends in Carmarthen

The chart displays monthly precipitation patterns in Carmarthen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec99136115619010091134115171151184
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Carmarthen

In Carmarthen, United Kingdom, August brings a shift in humidity, with levels averaging around 73%. This marks a slight increase from the drier July, which recorded 70%, but remains significantly lower than the winter months that typically hover in the high 80s and early 90s. The trend indicates a gradual decline in humidity from January's peak of 88%, steadily descending throughout the spring and summer months before experiencing a notable rise again in the fall leading into October. This seasonal fluctuation creates a more comfortable environment in August, making it an ideal time to enjoy the outdoors before the humidity climbs again.

August Average Humidity in Carmarthen

This chart illustrates the average monthly humidity levels in Carmarthen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Carmarthen

As summer reaches its peak, August in Carmarthen, United Kingdom, offers a high UV Index of 7, which translates to a recommended burn time of approximately 25 minutes for unprotected skin. This reflects a slight drop from the previous month, where the UV Index soared to an impressive 8 during July. Throughout the year, UV exposure in Carmarthen fluctuates significantly, with the lowest readings occurring in the winter months, such as January and February, where the indices remain low at 1 and 2 respectively. As spring unfolds, UV levels begin to rise, peaking in the summer. It's important to stay informed about these trends to protect your skin; for more details, check out the Carmarthen UV Index.

Maximum UV Index Levels in Carmarthen for August

The chart shows the monthly maximum UV Index (UVI) for Carmarthen 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.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Carmarthen 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 Carmarthen

In August, Carmarthen enjoys a delightful embrace of sunshine, with 379 hours illuminating the month. This marks a slight dip from the peak July sunshine, which boasts 422 hours, yet it remains a vibrant summer delight. The trend of increasing daylight hours begins in January's 97 hours, steadily climbing to a seasonal high as spring blossoms into summer. Following June's generous 401 hours, August still captures the essence of summer's warmth and long days, before transitioning into the cooler months. As September approaches, sunlight begins to wane, settling at 313 hours, hinting at the gradual shift into autumn. Overall, August serves as a beautiful reminder of summer's lingering glow in Carmarthen’s annual cycle of sunshine.

Monthly Sunshine Duration in Carmarthen: August Highlighted

The August sunshine duration represents the total number of hours Carmarthen 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.
JanFebMarAprMayJunJulAugSepOctNovDec97h157h229h341h409h401h422h379h313h245h138h114h
Data source: Carmarthen August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Carmarthen During August

August in Carmarthen, United Kingdom, offers a moderate chance of sunny weather, with approximately 34% likelihood of sun. This marks a slight uptick from the dreariness of earlier summer months; particularly, July sees a respectable 40% chance, making it the sunniest month of the season. As the year progresses into August, the sun's appearances become more consistent compared to the colder months, where chances plummet to around 20% to 26% in winter. Thus, while not guaranteed, the late summer sun in Carmarthen can bring a welcomed brightness, balancing out the typically overcast skies that often dominate the region.

Percentage of Sunny Days in August in Carmarthen

The chart illustrates the percentage of sunny days in Carmarthen 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 Carmarthen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%24%29%54%32%26%40%34%27%20%25%22%
Data source: Carmarthen August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Carmarthen in August

In Carmarthen, United Kingdom, the August daylight duration offers a delightful mix of late summer warmth and lingering daylight, with approximately 14 hours of sunlight. Following the peak of summer in June and July, where residents bask in 16 hours of brilliant daylight, August marks a subtle transition as the days begin to shorten in preparation for autumn. This gradual decline in daylight, dropping to 12 hours by September, highlights the cyclical nature of the seasons, allowing the vibrant hues of late summer to be enjoyed a little longer before giving way to the cozy, shorter days of fall. As daylight progressively dims through the year, the increase from 8 hours in January to nearly double that in May emphasizes the evolving character of Carmarthen's weather and the beautiful shifts in its skies throughout the year.

Average Daylight Hours in Carmarthen for August

The chart illustrates the variation in daylight duration in Carmarthen throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 21m9h 57m11h 55m13h 55m15h 41m16h 36m16h 6m14h 31m12h 35m10h 35m8h 47m7h 50m
Data source: Carmarthen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Carmarthen

In Carmarthen, August introduces a moderate average wind speed of 4.5 m/s (10 mph), marking a gentle breeze that contrasts with the more blustery conditions of earlier months. Following the peak winds of February at 6.5 m/s (15 mph), the summer months exhibit a noticeable decline, reaching their lowest point in July at 3.5 m/s (8 mph). As August approaches, the winds pick up slightly, hinting at the transition toward autumn. This uptick foreshadows October’s higher gusts, which average 5.9 m/s (13 mph), illustrating a seasonal shift where visitors can enjoy both the serenity of summer and the invigorating freshness that autumn brings. Overall, August acts as a gentle bridge, balancing the calm of summer with the promise of more energetic winds ahead.

Average August Wind Speed in Carmarthen

The chart displays monthly wind speed patterns in Carmarthen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.46.55.53.95.13.83.54.5 m/s3.95.94.86.2
Data source: Carmarthen August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Carmarthen Compares to Other Months

The weather in Carmarthen 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 Carmarthen and find detailed weather information for every month.

August and January present markedly different weather conditions. In August, temperatures range from a minimum of 9°C (49°F) to a pleasant average of 16°C (61°F), peaking at about 25°C (78°F). It also experiences higher precipitation, with 134 mm (5.3 in) falling over 19 days and humidity levels at 73%. Conversely, January is much colder, with temperatures dipping to a minimum of -2°C (28°F) and an average of 6°C (43°F), reaching a maximum of 13°C (56°F). Precipitation in January is lower at 99 mm (3.9 in) over 13 days, but humidity is higher at 88%. For a more detailed look at January weather, check Carmarthen weather in January.

When comparing the weather in August and February, notable differences emerge. August boasts a milder climate with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 25°C (78°F), making it a much warmer month with an average temperature of 16°C (61°F). In contrast, February experiences colder conditions, with temperatures fluctuating from a chilly -2°C (28°F) to a high of 14°C (58°F) and an average of 7°C (44°F).

Precipitation levels are similar as both months show considerable rainfall, with August having 134 mm (5.3 in) over 19 days and February recording 136 mm (5.3 in) over 17 days. However, February's higher humidity of 88% adds to the brisk winter feel, compared to August's 73%. For more detailed information about February weather specifically, you can refer to Carmarthen weather in February.

When comparing the weather in August and March, notable differences emerge in both temperature and humidity. August typically enjoys milder temperatures, ranging from a minimum of 9°C (49°F) to a maximum of 25°C (78°F), with an average temperature of 16°C (61°F). In contrast, March starts much cooler, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 16°C (61°F) and an average of 7°C (45°F). Humidity levels are relatively high in both months, but March is slightly more humid at 86%, compared to August's 73%. Precipitation is frequent in both months, with August experiencing 134 mm (5.3 in) over 19 days, while March sees a bit less at 115 mm (4.5 in) over 18 days. For more detailed information, you can visit Carmarthen weather in March.

In comparing the weather between August and April, it's clear that August is generally warmer and drier. While April experiences temperatures ranging from a chilly 0°C (32°F) to a milder 19°C (67°F), August boasts a minimum temperature of 9°C (49°F) and can reach a maximum of 25°C (78°F). Additionally, August sees significantly less rainfall, with 134 mm (5.3 in) over 19 days compared to April's 61 mm (2.4 in) over 11 days. However, April has a higher humidity level at 84%, while August maintains a slightly lower humidity of 73%. For more specific details about April weather, you can check out Carmarthen weather in April.

In comparing the weather of August and May, August generally presents warmer temperatures, with an average of 16°C (61°F) compared to May's cooler 12°C (53°F). The maximum temperature in August reaches up to 25°C (78°F), slightly higher than May’s peak of 23°C (73°F). However, August experiences more precipitation, totaling 134 mm (5.3 in) over 19 days, compared to May's 90 mm (3.5 in) across 12 days. Humidity levels are also different, with May being slightly more humid at 80% versus August's 73%. For more detailed insights, check out Carmarthen weather in May.

When comparing the weather in August and June, both months exhibit similar maximum temperatures of 25°C (78°F), but August tends to be warmer overall with an average temperature of 16°C (61°F) compared to June's 15°C (59°F). In June, the weather starts out cooler with a minimum temperature of 7°C (45°F), whereas August has a slightly higher minimum of 9°C (49°F). Rainfall is more frequent in August, with 134 mm (5.3 in) of precipitation over 19 days, compared to June’s 100 mm (3.9 in) over 16 days. Additionally, August is less humid at 73%, while June has a higher humidity level of 80%. For more details about June's weather, you can check Carmarthen weather in June.

In comparing the weather between July and August, it is clear that both months have similar average temperatures, with July having a min of 8°C and a max of 26°C, while August’s min is slightly higher at 9°C, peaking at 25°C. However, August experiences more significant precipitation, accumulating 134 mm across 19 days, compared to July's 91 mm over 13 days. Additionally, August tends to have slightly higher humidity at 73%, while July sits at 70%. For a more detailed view of July weather patterns, you can refer to this link: Carmarthen weather in July.

In August, temperatures range from a minimum of 9°C (49°F) to a maximum of 25°C (78°F), with an average temperature of 16°C (61°F). The month sees considerable rainfall, with 134 mm (5.3 in) of precipitation over 19 days, and humidity levels averaging 73%. In contrast, September experiences slightly cooler temperatures, with a minimum of 5°C (42°F) and an average of 15°C (58°F), while still reaching up to 25°C (78°F) at its peak. Rainfall decreases to 115 mm (4.5 in) over 16 days, and humidity rises modestly to 79%. For a closer look at September weather specifics, you can check Carmarthen weather in September.

August and October present quite different weather patterns. In August, temperatures range from a minimum of 9°C (49°F) to a maximum of 25°C (78°F), with an average of 16°C (61°F) and a humidity level of 73%. The month experiences around 134 mm (5.3 in) of precipitation over 19 days, making it a relatively warm and humid time of year. In contrast, October sees a notable drop in temperature, with a minimum of 0°C (33°F), an average of 12°C (54°F), and a maximum of 20°C (68°F). This month is also wetter, with 171 mm (6.7 in) of precipitation across 18 days, and an increase in humidity to 89%. For more detailed weather insights, check out Carmarthen weather in October.

August typically features milder temperatures, with an average of 16°C (61°F) and maximums reaching up to 25°C (78°F). In contrast, November experiences cooler conditions, averaging only 9°C (49°F) and peaking at 15°C (60°F). Both months see significant precipitation, with August receiving 134 mm (5.3 in) over 19 days and November slightly higher at 151 mm (6.0 in) over just 18 days. Additionally, humidity levels are notably higher in November at 90%, compared to August's 73%, contributing to a damp and chilly atmosphere. For more detailed insights, check out Carmarthen weather in November.

When comparing the weather in August and December, it's evident that August experiences significantly warmer temperatures, with averages around 16°C (61°F) and maximums peaking at 25°C (78°F). In contrast, December sees much cooler averages of 8°C (46°F) and maximums only reaching 13°C (55°F). Precipitation is also a noteworthy aspect, with December receiving more rainfall, totaling 184 mm (7.2 in) over 20 days, compared to August's 134 mm (5.3 in) over 19 days. Furthermore, humidity levels are higher in December at 89%, compared to August's 73%. For more details, you can check Carmarthen weather in December.

Compare Carmarthen's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Carmarthen

August in Carmarthen brings a blend of warmth and moisture, distinguishing it from the cooler, drier months of the year. With average temperatures hovering around a pleasant 16°C (61°F) and peaks occasionally reaching 25°C (78°F), this month often invites both locals and visitors to enjoy the outdoors. However, the 73% humidity paired with 134 mm of rainfall over 19 days reminds us that summer's warmth can also be interspersed with showers. Embrace the unpredictability of August weather in Carmarthen, and prepare for a season that balances sunny moments with refreshing rain. For a detailed look at the annual weather patterns, check out Carmarthen Climate.