Last updated: August 21, 2025
In August, Sark, Guernsey, experiences a delightful blend of warm temperatures and refreshing breezes. With a maximum temperature reaching 23°C (73°F) and an average of 17°C (63°F), the island invites visitors to enjoy its summer charm. While the minimum temperature dips to 14°C (57°F), the humidity remains at a comfortable 73%. However, travelers should prepare for occasional showers, as 10 days of rain bring a total of 57 mm (2.2 in) of precipitation throughout the month. Whether basking in the sun or taking shelter from light rain, Sark's August weather offers a captivating experience for all.
In August, Sark, Guernsey, basks in the height of summer, with temperatures soaring to pleasant heights. The typical daily minimum hovers around 14°C (57°F), while the average temperature settles comfortably at 17°C (63°F), and peaks reaching up to 23°C (73°F). This warm trend reflects the broader pattern of rising temperatures over the summer months, building from the cooler early parts of the year. As the island enjoys its warmest month, visitors can expect idyllic weather, perfect for soaking in the natural beauty and charm of this stunning destination.
August in Sark, Guernsey boasts a precipitation total of 57 mm (2.2 in), mirroring the wetter conditions experienced in May. With 10 days of rain, the month presents a moderate level of precipitation that continues the trend of relatively light rainfall seen in July, but starts to pivot towards the wetter autumn months. Overall, this summer-like rainfall contributes to the lush landscapes of Sark, striking a balance between the drier days of April and the significantly wetter conditions that follow in September and October. As the island prepares for the transition into fall, August serves as a gentle reminder of nature’s cyclical rhythm, blending summer’s warmth with the promise of the approaching autumn rains.
In August, Sark, Guernsey experiences a slight uptick in humidity at 73%, marking a subtle shift from the drier months of late summer. Following a significant drop to 69% in July, August sees a gentle increase as the island transitions toward the cooler autumn months. This pattern of fluctuating humidity underscores a yearly trend where summer lows gradually give way to the more humid conditions of the late year. Indeed, as autumn approaches, humidity levels begin to rise again, peaking in late autumn and winter, suggesting that Sark’s climate remains refreshingly brisk yet increasingly moist as the year draws to a close.
In August, Sark experiences a UV Index of 7, placing it in the high exposure category with a burn time of just 25 minutes. This marks a slight decrease from the peak of 9 in June and 8 in July, suggesting that while summer is still in full swing, the intensity of the sun is beginning to wane. Throughout the summer months, the UV Index steadily climbs from 6 in April to its highest point in June, before tapering off slightly in August and September. As you enjoy the remaining sunny days of summer, it's important to remain vigilant about sun safety. For more details on UV levels specific to Sark, check out the Sark UV Index.
UV Risk Categories
August in Sark, Guernsey, is a delightful continuation of the sun-drenched summer, boasting 396 hours of sunshine. This month honed in on the peak of summer warmth, following July’s impressive 436 hours. While August may yield slightly fewer sunny hours, it still provides a vibrant backdrop for outdoor adventures and beachside relaxation. Notably, after a steady climb from the chilly depths of winter, where January drips with just 107 hours, the trend of increasing sunshine culminates in July, only to gracefully transition into the early autumn months. As September approaches, the sun's presence diminishes to 338 hours, reminding us of the fleeting nature of summer's golden days, yet still blessing visitors with a warm afterglow to savor before the cooler months set in.
August in Sark, Guernsey, brings a moderate likelihood of sunny weather, with a 42% chance of sunshine. This figure reflects a slight dip from July's 48%, but it remains consistent with the sunniest months of the summer season. As the year progresses, there's a clear pattern: spring months show an uptick in sunny days, culminating in the brightest spells around April. However, as summer transitions into autumn, the trend indicates a gradual decline in sunshine, making August a sweet spot for enjoying relatively sun-filled days before the chill of autumn sets in.
August in Sark, Guernsey, marks the tail end of the summer season, with 14 hours of glorious daylight bathing the island in a warm glow. Following the peak of June, with its impressive 16 hours of sunshine, August maintains a delightful length of daylight, although it gradually begins to wane as summer gives way to autumn. This reduction in daylight hours is a gentle reminder of the changing seasons, as September further decreases to 12 hours. August serves as a beautiful transition, capturing the last lingering moments of vibrant summer days while hinting at the cozy embrace of fall ahead. Enjoy the sunlight while it lasts!
In August, the average wind speed in Sark, Guernsey, hovers around 6.4 m/s (14 mph), marking a gentle summer breeze that contrasts with the more blustery months surrounding it. After a steady decline from April's 6.5 m/s, the winds of summer reach their calmest point in June at just 4.5 m/s (10 mph) before picking up slightly in July. This subtle uptick suggests a refreshing shift as August approaches. While the wind speeds remain relatively mild, a noticeable rise begins in October, leading into the winter months where speeds soar to 9.3 m/s (21 mph) in December. These trends reflect the island's temperate climate, offering a pleasant transition from the light summer breezes to the invigorating autumn gusts.
Weather in Sark varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sark, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather patterns, highlighting the seasonal differences. In August, temperatures range from a minimum of 14°C (57°F) to a maximum of 23°C (73°F), with an average of 17°C (63°F), and the month experiences about 57 mm (2.2 in) of precipitation over 10 days, coupled with a humidity level of 73%. In stark contrast, January sees colder conditions, with temperatures dropping to a minimum of 2°C (37°F) and peaking at 13°C (57°F), resulting in an average of just 9°C (48°F). Precipitation is higher in January at 98 mm (3.9 in) over 15 days, and humidity rises to a notable 90%. For more details on January weather, you can visit Sark weather in January.
The weather in August is generally much warmer and drier compared to February. In August, temperatures range from a minimum of 14°C (57°F) to a maximum of 23°C (73°F), with an average of 17°C (63°F) and relatively low precipitation of 57 mm (2.2 in) over about 10 days. In contrast, February experiences cooler temperatures, ranging from a minimum of 0°C (32°F) to a maximum of 13°C (55°F), with an average of only 9°C (48°F). Precipitation is higher in February, totaling 89 mm (3.5 in) spread over approximately 16 days, along with a significantly higher humidity of 89%. For a detailed look at February weather in Sark, you can check Sark weather in February.
In comparing the weather of August and March, we see a stark contrast in temperatures and conditions. August boasts milder temperatures, with an average of 17°C (63°F), while March's average rests at a cooler 9°C (49°F). The minimum temperature in March even dips to -1°C (31°F), showcasing its chilly start to spring compared to August's more pleasant minimum of 14°C (57°F). Additionally, March experiences more precipitation with 80 mm (3.2 in) over 15 days, compared to August's 57 mm (2.2 in) over 10 days. The humidity is also higher in March at 86%, compared to 73% in August, contributing to a generally damp and cool feel during that month. For more detailed information, you can check Sark weather in March.
In August, the weather is significantly warmer than in April, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 23°C (73°F). In contrast, April experiences cooler temperatures, with averages between 5°C (41°F) and 15°C (60°F). While August has higher humidity at 73%, April's humidity is slightly elevated at 84%. Precipitation is more frequent in August, occurring on about 10 days and totaling 57 mm (2.2 in), compared to April, which sees rain on 7 days with a total of 35 mm (1.4 in). For more details on April weather, you can visit Sark weather in April.
When comparing the weather in August and May, it’s clear that August tends to be warmer with average temperatures reaching 17°C (63°F) compared to May’s cooler average of 12°C (54°F). The maximum temperature in August can climb to 23°C (73°F), while May only sees a high of 19°C (66°F). Both months share similar precipitation levels, with August receiving 57 mm (2.2 in) over 10 days and May also having 57 mm (2.2 in) but spread over just 8 days. Interestingly, humidity in May is slightly higher at 80%, compared to 73% in August. For a closer look at May’s weather specifics, you can check Sark weather in May.
In comparing the weather between August and June, both months exhibit mild temperatures, but August tends to be slightly warmer. In August, temperatures range from a minimum of 14°C (57°F) to a maximum of 23°C (73°F), resulting in an average of 17°C (63°F). In contrast, June has a cooler range with minimum temperatures at 11°C (53°F) and a maximum of 21°C (70°F), averaging 15°C (59°F). While August experiences 57 mm (2.2 in) of precipitation over 10 days at a humidity level of 73%, June sees a bit more rain at 64 mm (2.5 in) with a higher humidity of 80%. For more detailed information about June weather on Sark, you can visit Sark weather in June.
In comparing the weather between July and August, we see some subtle differences. Both months exhibit similar temperature ranges, with minimums around 14°C (57°F), average temperatures of approximately 17°C (63°F), and maximums reaching 23°C (73°F). However, August experiences slightly increased humidity at 73%, compared to July's 69%, which may contribute to a feeling of mugginess as summer progresses. Additionally, August sees a higher total precipitation of 57 mm (2.2 in) over 10 days, in contrast to July's 42 mm (1.7 in) across 8 days. For more detailed insights into the weather patterns during this month, check out Sark weather in July.
August and September share similar average temperatures, with August slightly warmer overall, featuring a minimum of 14°C and a maximum of 23°C compared to September's minimum of 12°C and maximum of 22°C. Both months experience similar levels of precipitation, but September tends to be a bit wetter with 71 mm compared to August's 57 mm, despite both months having rain on approximately 10 days. Additionally, humidity levels increase slightly in September to 79%, up from 73% in August. For more detailed information on September weather, you can visit Sark weather in September.
August and October present a notable shift in weather conditions. In August, temperatures range from a minimum of 14°C (57°F) to a maximum of 23°C (73°F), accompanied by an average humidity of 73% and relatively moderate precipitation of 57 mm (2.2 in) over about 10 days. In contrast, October brings cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 20°C (68°F), along with a significant increase in precipitation to 152 mm (6.0 in) spread across 18 days. The humidity rises to 89%, making October feel much wetter. For more details on October weather specifics, you can visit Sark weather in October.
August and November present quite contrasting weather conditions. In August, temperatures are relatively mild, ranging from a minimum of 14°C (57°F) to a maximum of 23°C (73°F), with an average of 17°C (63°F). The month experiences moderate rainfall, totaling 57 mm (2.2 in) over about 10 days, and humidity levels at a comfortable 73%.
In stark contrast, November sees cooler temperatures, with a minimum of just 6°C (43°F) and an average of 12°C (54°F). The maximum temperature reaches 17°C (62°F), making it chillier overall. This month is significantly wetter, accumulating 129 mm (5.1 in) of precipitation spread across 19 days, and the humidity rises to a high 92%. For more details on the November weather, you can refer to Sark weather in November.
The weather in August is generally mild, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 23°C (73°F) and relatively moderate precipitation of 57 mm (2.2 in) over about 10 days. In contrast, December brings much cooler temperatures, with averages between 4°C (40°F) and 14°C (57°F), and significantly higher precipitation levels reaching 177 mm (7.0 in) across 21 days, contributing to the increased humidity of 92%. This stark difference highlights the transition from summer warmth to winter chill. For more details on the conditions in December, visit Sark weather in December.
As August unfolds in Sark, the weather brings a delightful blend of warmth and moisture, distinguishing it from the cooler months that precede it. With maximum temperatures reaching a pleasant 23°C (73°F), this month offers a comfortable respite perfect for outdoor activities. However, it's not without its quirks; humidity levels soar to around 73%, contributing to a more tropical feel. Despite the 57 mm of precipitation spread across 10 days, these occasional showers are often interspersed with sunny spells, allowing for a mix of sunshine and refreshing rain. Overall, August stands out as a vibrant month that invites you to enjoy Sark's scenic beauty. For a deeper dive into the island's fascinating weather patterns, check out Sark Climate.