August Weather in Wales, United Kingdom

Last updated: March 17, 2025

In August, Wales experiences a vibrant tapestry of weather, with temperatures ranging from a comfortable 8°C (47°F) at night to a sweltering 32°C (90°F) during the day, showcasing its capacity for warmth and variety. The average daily temperature hovers around a pleasant 16°C (62°F), making it an ideal time for outdoor adventures. However, with an average precipitation of 77 mm (3.0 in) spread over 12 days, keeping an umbrella handy is wise, especially given the 77% humidity that adds a touch of mugginess to the air. Whether basking in the sun or dodging rain showers, August in Wales offers a unique experience that is both lively and unpredictable.

August Temperature in Wales

August in Wales marks a delightful peak in temperatures, with a minimum of 8°C (47°F) and an average of 16°C (62°F), ideal for enjoying the lush landscapes. The maximum temperature can climb to a balmy 32°C (90°F), hinting at the region’s occasional heatwaves that contrast with the chill of earlier months. This month serves as a bridge from the warmth of summer, showcasing a significant increase from the cooler days of July, when temperatures averaged 17°C (63°F). As the summer draws to a close, August invites both locals and visitors to bask in its warmth, making it a vibrant and appealing time in the Welsh countryside.

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

The chart illustrates August temperature patterns in Wales, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404144475359636257524542
Data source: Temperature data for Wales 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 Wales

In August, Wales experiences a notable precipitation level, with 77 mm (about 3.0 inches) of rain falling over approximately 12 days. This amount indicates a slight decrease compared to the wetter months of June and July, each recording 80 mm of precipitation. Despite the drop, August remains one of the wetter summer months, signifying a continuation of the moist maritime climate that characterizes the region. The trend of consistent rainfall throughout the summer months sets the stage for a lush Welsh landscape, while the approach of autumn is hinted at by the uptick in precipitation averages in September and October. As the season transitions, the persistent rain serves not only to maintain the verdant scenery but also signifies a shift toward the wetter months ahead.

August Precipitation Trends in Wales

The chart displays monthly precipitation patterns in Wales, 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.
JanFebMarAprMayJunJulAugSepOctNovDec516768406480807763826580
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Wales

In Wales, the humidity levels in August typically hover around 77%, a slight increase from the lower levels observed in July at 76%. This modest uptick continues the trend of gradually rising humidity as the summer progresses, although it remains significantly lower than the damp depths of winter, where figures peak at 90% in January and October. Overall, while August offers a brief respite from humidity, the air starts to feel heavier as the region transitions towards the wetter months, creating the characteristic ambiance of late summer in this picturesque part of the United Kingdom.

August Average Humidity in Wales

This chart illustrates the average monthly humidity levels in Wales, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%80%81%76%77%85%90%92%90%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Wales

In August, Wales experiences a high UV Index of 7, marking a slight decline from July's peak but still indicating the importance of sun safety. With an exposure category of high, the burn time is approximately 25 minutes—a reminder that sun protection is essential during this period of summer warmth. Following the intense UV levels seen in June and July, August continues to encourage outdoor activities while urging caution under the sun. As we transition into September, the UV Index drops to a moderate level of 5, showcasing the shifting patterns of UV exposure throughout the year. For more insights on UV trends, visit Wales UV Index.

Maximum UV Index Levels in Wales for August

The chart shows the monthly maximum UV Index (UVI) for Wales 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Wales 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 Wales

August in Wales sees a delightful continuation of summer's embrace, boasting 351 hours of sunshine. This month typically showcases a gentle decline from the sun-drenched peaks of July, which enjoyed 375 hours, yet remains robust compared to the earlier months of the year. As the seasons shift, the increase in sunshine hours throughout spring and early summer—climbing from a mere 81 hours in January to a peak in May with 380 hours—fuels the vibrant landscapes and rich outdoor activities that Wales is known for. As August paves the way for the transitioning autumn, the trend of gradually decreasing sunlight persists, setting the stage for September's 277 hours, yet the warmth and beauty of late summer are still very much present and cherished in this enchanting region.

Monthly Sunshine Duration in Wales: August Highlighted

The August sunshine duration represents the total number of hours Wales 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.
JanFebMarAprMayJunJulAugSepOctNovDec81h144h194h313h380h344h375h351h277h223h123h96h
Data source: Wales August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wales During August

In Wales, the likelihood of sunny weather tends to fluctuate throughout the year, with August presenting a 22% chance of sunshine. This marks a notable dip from the sunnier months of April, which peaks at 46%, and is considerably lower than the height of summer in July, where the odds reach 35%. Compared to other summer months, August's sun seems shy, trailing behind the transitional months of late autumn and early spring, such as November at 30% and March at 25%. Overall, while August does not promise an abundance of sunny days, it still retains a semblance of summer warmth, enticing those hopeful for occasional breaks in the typical Welsh rain.

Percentage of Sunny Days in August in Wales

The chart illustrates the percentage of sunny days in Wales 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 Wales experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%25%25%46%30%28%35%22%29%22%30%20%
Data source: Wales August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wales in August

In August, Wales basks in about 14 hours of daylight, signaling a gradual decline as summer winds down. This month reflects a noticeable drop from the peak of 16 hours experienced in June and July, effectively marking a transition towards the shorter days of autumn. The daylight duration in August is reminiscent of May, where longer evenings beckon outdoor activities, yet hints at the seasonal shift ahead. Following this, daylight becomes progressively shorter, with 12 hours in September and descending further into the darker months of October and November. This pattern highlights the beautiful yet fleeting nature of summer sunshine in Wales, encouraging a spirited embrace of the abundant light while it lasts.

Average Daylight Hours in Wales for August

The chart illustrates the variation in daylight duration in Wales throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 21m14h 40m12h 37m10h 30m8h 36m7h 35m
Data source: Wales daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Wales

In August, the wind in Wales tends to pick up slightly after the calm of July, averaging around 3.9 m/s (9 mph). This revival of breezes signals a subtle shift in weather patterns as summer wanes, contrasting with the low of 2.9 m/s (6 mph) seen in July. The wind speed in August is also consistent with the preceding months of May and June, where conditions are generally mild yet invigorating. As summer transitions to autumn, one can expect that the breezy afternoons of August prepare the region for the brisk winds that accompany the autumn months, with a notable increase expected in September and October. This gradual rise from summer's whisper to autumn's call encapsulates the enchanting climate of Wales.

Average August Wind Speed in Wales

The chart displays monthly wind speed patterns in Wales, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.55.04.83.33.93.32.93.9 m/s3.65.34.84.6
Data source: Wales August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Wales Compares to Other Months

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

August and January present contrasting weather patterns. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), creating a warm average of 16°C (62°F). The month experiences substantial rainfall, with about 77 mm (3.0 in) spread over 12 days and a humidity level of 77%, contributing to a muggy atmosphere. In contrast, January's temperatures drop significantly, with a minimum of -4°C (24°F) and a maximum of 14°C (58°F), resulting in a chilly average of 5°C (40°F). It also sees less precipitation at 51 mm (2.0 in) over 10 days but has a higher humidity level of 90%, giving a damp and cold feel to the month. For more insights on winter weather, check out Wales weather in January.

August and February exhibit striking differences in weather patterns. August tends to be much warmer, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F) and an average of 16°C (62°F). In contrast, February is significantly colder, with temperatures varying from a minimum of -5°C (23°F) to a maximum of 17°C (63°F) and an average of just 5°C (42°F). Precipitation levels are somewhat similar, with August receiving 77 mm (3.0 in) across 12 days and February slightly lower at 67 mm (2.6 in) over the same number of days. Interestingly, February also has a higher humidity level at 88% compared to August’s 77%. For more details on the weather in February, you can visit Wales weather in February.

August and March present notably different weather patterns. In August, temperatures range from a mild 16°C (62°F) on average, peaking at 32°C (90°F), while March experiences cooler conditions with an average of just 7°C (44°F) and a maximum of 20°C (68°F). Precipitation is relatively high in both months, with August seeing 77 mm over 12 days and March slightly less at 68 mm over 13 days. Humidity levels are also higher in March at 86%, compared to 77% in August, creating a distinct contrast in both temperature and moisture between these two months. For more detailed information on March weather, you can visit Wales weather in March.

When comparing the weather in August and April, a significant contrast emerges in temperature and overall conditions. August boasts a minimum temperature of 8°C (47°F) and can peak at a warm 32°C (90°F), with an average of 16°C (62°F). This month also experiences relatively high humidity at 77% and receives about 77 mm (3.0 in) of precipitation over 12 days. In contrast, April has a minimum temperature of -2°C (28°F) and a maximum of 25°C (77°F), with an average of 8°C (47°F). The month brings less precipitation at 40 mm (1.6 in) but higher humidity at 84%, spread over 7 days. For more detailed insights on April weather specifically, you can visit Wales weather in April.

When comparing the weather in August and May, it's clear that August tends to be warmer overall. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), with an average of 16°C (62°F). This month also sees higher humidity levels at 77% and more significant precipitation at 77 mm (3.0 in) over 12 days. Conversely, May features cooler temperatures, with lows around 0°C (32°F) and highs reaching up to 25°C (78°F), averaging at 12°C (53°F). It experiences less precipitation at 64 mm (2.5 in) despite having slightly more rainy days, totaling 13. The humidity in May is marginally higher at 80%. For further insights, you can explore Wales weather in May.

In comparing the weather between August and June, August tends to be warmer, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), whereas June has slightly lower temperatures, with a minimum of 6°C (43°F) and a maximum of 29°C (84°F). While both months experience similar levels of precipitation, with August receiving 77 mm (3.0 in) across 12 days and June totaling 80 mm (3.1 in) over 13 days, June exhibits slightly higher humidity at 81% compared to August's 77%. For a more detailed look at the weather patterns, check out Wales weather in June.

In comparing the weather between July and August, we observe that July generally experiences slightly warmer temperatures, with an average of 17°C (63°F) and a maximum of 35°C (95°F), compared to August's average of 16°C (62°F) and maximum of 32°C (90°F). Both months feature similar levels of humidity, with July at 76% and August at 77%. Precipitation levels are comparable as well, with July receiving 80 mm (3.1 in) and August at 77 mm (3.0 in), with both months experiencing rainfall on approximately 12 days. For more details on July's weather, you can check Wales weather in July.

August tends to be warmer than September, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), while September's temperatures drop to a minimum of 4°C (39°F) and a maximum of 28°C (83°F). Precipitation in August is slightly higher at 77 mm (3.0 in) over approximately 12 days, compared to September's 63 mm (2.5 in) over 11 days. Additionally, September experiences higher humidity levels at 85%, compared to 77% in August. This shift in temperature and humidity makes September feel cooler and more humid, which can be noticeable for those transitioning from the warmer August days. For more details about September weather, you can visit Wales weather in September.

August generally exhibits warmer and more variable weather compared to October. With minimum temperatures around 8°C (47°F) and maximums reaching up to 32°C (90°F), August offers an average temperature of 16°C (62°F). However, it experiences significant humidity at 77% and precipitation spread over 12 days, totaling 77 mm (3.0 in).

In contrast, October brings cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 23°C (73°F), averaging 11°C (52°F). While precipitation increases slightly to 82 mm (3.2 in) over 14 days, the humidity also rises to 90%, making the month feel notably damp. For a detailed overview of the atmospheric conditions in October, you can check Wales weather in October.

August and November present contrasting weather experiences. In August, temperatures range from a minimum of 8°C (47°F) to a maximum of 32°C (90°F), with an average of 16°C (62°F), making it one of the warmest months of the year. Though it sees higher precipitation at 77 mm (3.0 in) over 12 days, humidity stands at 77%, creating a summer-like atmosphere. In contrast, November brings a significant drop in temperatures, with minimums plunging to -4°C (26°F) and an average of only 7°C (45°F). Despite lower precipitation at 65 mm (2.5 in) over the same number of rainy days, the humidity rises to 92%, adding a damp chill to the air. For more details on the November weather in Wales, check out Wales weather in November.

August and December display stark contrasts in weather patterns. In August, temperatures range from a mild 8°C (47°F) to a warm 32°C (90°F), with an average of 16°C (62°F), making it a relatively pleasant month. The precipitation level is around 77 mm (3.0 in) over about 12 days, accompanied by a humidity of 77%. In contrast, December brings significantly cooler conditions, with temperatures ranging from a chilly -3°C (27°F) to a maximum of 14°C (58°F), averaging just 5°C (42°F). Precipitation increases slightly to 80 mm (3.1 in) across 15 days, and humidity rises to 90%, contributing to a damp and crisp atmosphere. For those interested in more details about weather conditions during this month, check out Wales weather in December.

Compare Wales's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Wales

In August, Wales offers a unique blend of warmth and wetness that distinguishes it from the cooler months of the year. With notable maximum temperatures reaching up to 32°C (90°F), summer in Wales brings a delightful warmth, inviting outdoor activities and exploration. However, this respite from the chill is often accompanied by increased humidity and a fair share of rainfall, with 12 days bringing about 77 mm (3.0 in) of precipitation—more than many other months. This mix of conditions means that while the days can be pleasantly warm, a sudden shower is never far away, reminding visitors that Wales' weather can be as unpredictable as it is beautiful. For a deeper dive into the weather patterns throughout the year, explore Wales Climate.