Last updated: August 21, 2025
August in Saint Peter Port, Guernsey offers a delightful blend of warm temperatures and refreshing sea breezes. With a maximum reach of 22°C (72°F) and an average of 17°C (63°F), visitors can enjoy pleasant days while the minimum temperature hovers around 14°C (57°F). Although the month experiences about 50 mm (2.0 in) of rainfall across 9 days, the relatively high humidity of 71% adds an invigorating softness to the air. Whether you’re exploring the charming harbor or relaxing on the beach, August is a perfect time to experience the captivating allure of this beautiful island.
In August, Saint Peter Port, Guernsey basks in some of its warmest weather, with minimum temperatures consistently resting at 14°C (57°F), and reaching an inviting 22°C (72°F) at their peak. The month features an average temperature of 17°C (63°F), making it an optimal time for outdoor adventures and seaside relaxation. This pattern marks a significant warmth increase from the cooler early months, reflecting a gradual ascent in temperatures as summer settles in. With such pleasant conditions, August stands out as a delightful time to explore the coastal charm and natural beauty of Guernsey.
In August, Saint Peter Port, Guernsey, experiences a moderate precipitation total of 50 mm (2.0 in), falling over approximately 9 days. This rainfall marks a slight increase from the drier months of July, which recorded only 37 mm, suggesting that the summer is gradually giving way to the wetter conditions of autumn. Overall, while August is not the wettest month, it does set the stage for September's expected increase in precipitation, which typically sees around 63 mm. As the seasons transition, August serves as a gentle reminder that the lush greenery and blooming gardens of Guernsey are nurtured by these periodic showers, even as the sunshine continues to shine through.
In Saint Peter Port, Guernsey, August marks a shift in the humidity levels as temperatures rise, with an average of 71%—notably lower than the peak in July, which recorded 63%. This transitional period hints at the tail end of summer, gradually leading to the wetter months ahead. The subtle increase in humidity from July to August suggests that while summer lingers, the characteristic moisture of autumn begins its approach, setting the stage for a return to the more humid conditions that define the island’s climate throughout the fall and winter, peaking once again at 90% in November and December. As the seasons change, the humidity reflects the island’s unique maritime influences, creating a captivating blend of weather patterns.
In August, Saint Peter Port, Guernsey, experiences a UV Index of 7, categorizing it as a high exposure risk. This is a slight drop from the peak UV Index of 9 observed in June, yet still requires caution among sunbathers. With a burn time of just 25 minutes, it’s crucial to protect your skin, highlighting the importance of sun safety as summer winds down. This month typically aligns with the tail end of high UV levels seen from June through July, making it essential for residents and visitors alike to remain vigilant. For more detailed information on UV levels throughout the year, check out Saint Peter Port UV Index.
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August in Saint Peter Port, Guernsey, is ablaze with warmth and daylight, boasting an impressive 396 hours of sunshine. This month sits comfortably between the summer peak of July, with its dazzling 436 hours, and the more mellow September, which sees a decline to 338 hours. The sunshine hours gradually escalate from the winter lows of 107 hours in January to a vibrant 416 hours in June, before reaching their zenith in mid-summer. While August experiences a slight drop from July's brilliance, it retains a significant amount of sunlight, making it an ideal time for outdoor adventures and soaking up the vibrant coastal charm of Guernsey. As the season transitions, the lingering warmth invites visitors to relish the beauty of late summer, with nature in full bloom and the island's allure at its peak.
In Saint Peter Port, Guernsey, the likelihood of sunny weather in August stands at 42%, showcasing a slight dip from the peak of 62% seen in April. This month, however, remains a solid choice for those seeking sunshine, as it follows the trend of increasing chances throughout the warmer months, with July at 49% and June at 33%. While August's chance of sun is comparable to the early fall in September, it's clear that summer retains its competitive edge for weather enthusiasts. As the year progresses, the sunny days tend to wane, emphasizing the charm of August, where long summer evenings still promise delightful moments under the sun.
As summer begins to wane in August, Saint Peter Port enjoys a delightful 14 hours of daylight, marking a slow yet noticeable decline from the longer days of June and July. This gradual tapering of sunlight follows a seasonal pattern that sees the longest days in early summer, with daylight peaking at 16 hours in June. August’s daylight duration remains plentiful, allowing for ample opportunities to relish the outdoors before the transition to autumn. As the days shorten, the pace of daylight retreats further into September, illuminating the yearly ebb and flow of light that characterizes life in Guernsey.
In August, the winds in Saint Peter Port, Guernsey offer a gentle embrace, with an average speed of 6.6 m/s (15 mph). This marks a subtle increase from the quieter July days, while remaining lower than the gusts of the early winter months. As summer wanes, August's breezes stand in contrast to the blustery December winds, which peak at 9.8 m/s (22 mph). Notably, the wind speeds tend to decrease through the summer, hitting their annual low in June before gradually picking up again towards autumn. Thus, August serves as a serene transition, balancing the warm summer air with just enough wind to invigorate the coastal atmosphere, offering a delightful backdrop for leisurely seaside activities.
Weather in Saint Peter Port varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Saint Peter Port, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in Saint Peter Port between August and January, notable differences emerge. In August, temperatures are generally milder, with an average of 17°C (63°F) and a maximum of 22°C (72°F), while January sees much cooler averages, with a maximum of only 14°C (57°F) and an average temperature of 9°C (49°F). Additionally, January experiences higher precipitation levels, totaling 94 mm (3.7 in) over 14 days, compared to August's 50 mm (2.0 in) spread across 9 days. Humidity also rises significantly in January, averaging 89%, compared to 71% in August. For more detailed weather information, you can check Saint Peter Port weather in January.
August weather presents a mild and pleasant atmosphere, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 22°C (72°F) and an average of 17°C (63°F). This month experiences relatively low precipitation at 50 mm (2.0 in), spread across about 9 days, and maintains a moderate humidity level of 71%. In contrast, February is notably cooler, with temperatures dipping as low as 0°C (33°F) and reaching a maximum of 13°C (56°F), averaging 9°C (48°F). Additionally, February sees higher precipitation levels at 86 mm (3.4 in) over approximately 16 days, accompanied by increased humidity at 88%. For more details, check out Saint Peter Port weather in February.
In comparing the weather of August and March, it's clear that August offers more moderate temperatures, with averages around 17°C (63°F) compared to March's cooler average of 9°C (49°F). While August experiences less precipitation, at 50 mm (2.0 in) over 9 days, March sees a higher total of 73 mm (2.9 in) across 15 days, contributing to its more humid conditions with 85% humidity compared to August's 71%. For a closer look at how March weather unfolds in Saint Peter Port, you can check Saint Peter Port weather in March.
In comparing the weather of April and August, a notable contrast emerges. August tends to be warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 22°C (72°F), while April's temperatures are cooler, peaking at only 15°C (59°F) and starting as low as 5°C (41°F). Additionally, August experiences a higher average temperature of 17°C (63°F) compared to April’s average of 10°C (50°F). Precipitation levels are also relatively different, with August receiving 50 mm (2.0 in) over 9 days, whereas April sees less rain, totaling 34 mm (1.3 in) over 8 days. Interestingly, April has a higher humidity level at 84%, compared to August's 71%. For a more detailed look at April's weather, you can check Saint Peter Port weather in April.
When comparing the weather of August and May, August generally experiences warmer temperatures, with an average of 17°C (63°F) compared to May's cooler average of 12°C (54°F). The minimum temperatures in August are notably higher, starting at 14°C (57°F), while May begins at a brisk 7°C (45°F). Precipitation levels are quite similar, with May receiving slightly more at 55 mm (2.2 in) over 8 days, compared to August's 50 mm (2.0 in) over 9 days. Humidity levels are higher in May at 81%, compared to 71% in August, indicating a more muggy feel during the spring month. For more details, you can check Saint Peter Port weather in May.
When comparing the weather in August to that of June, August tends to be slightly warmer, with average temperatures reaching 17°C (63°F) and maximums of 22°C (72°F), compared to June's average of 14°C (58°F) and maximum of 19°C (67°F). Both months experience a similar number of precipitation days, with August receiving rain on 9 days and June on 8 days, although June has slightly higher precipitation at 59 mm (2.3 in) compared to August's 50 mm (2.0 in). Additionally, humidity is higher in June at 77%, whereas August sees a relatively lower humidity level of 71%. For a more detailed look at June's weather, you can visit Saint Peter Port weather in June.
When comparing the weather in July and August, we can see some notable differences. August is slightly warmer, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 22°C (72°F), compared to July's range of 14°C (57°F) to 21°C (70°F). Additionally, August experiences more precipitation, totaling 50 mm (2.0 in) over 9 days, while July receives less rainfall at 37 mm (1.5 in) over just 7 days. The humidity also increases in August, averaging 71%, compared to July's 63%. Overall, while both months have similar temperature ranges, August tends to be wetter and more humid. For those interested in delving deeper into the weather specifics for July, you can check out Saint Peter Port weather in July.
In comparing the weather between August and September, we notice some subtle shifts in temperature and humidity. August typically experiences slightly higher temperatures, with minimums around 14°C (57°F) and maximums reaching 22°C (72°F), whereas September sees a slight decrease with minimums of 12°C (54°F) and maximums of 21°C (71°F). Precipitation also increases in September, totaling 63 mm (2.5 in) compared to August’s 50 mm (2.0 in), although both months have rain on about 9 days. Additionally, September's humidity rises to 76%, up from August's 71%, creating a slightly more humid atmosphere. For more detailed insights into September weather, you can refer to this link: Saint Peter Port weather in September.
In comparing the weather between August and October, it's evident that there is a notable shift in temperature and precipitation patterns. August typically enjoys milder temperatures, with averages around 17°C (63°F) and maximums reaching 22°C (72°F). However, it also experiences relatively high humidity at 71% and moderate rainfall of 50 mm (2.0 in) over about 9 days. In contrast, October brings cooler temperatures, with averages dropping to 15°C (59°F) and maximums peaking at 20°C (68°F). The month is also significantly wetter, with total precipitation increasing to 144 mm (5.7 in) spread over 17 days, and humidity levels rising to 89%. This shift highlights the transition from the warmth of summer to the more unpredictable and often soggier fall conditions. For more detailed information, you can check Saint Peter Port weather in October.
August and November present contrasting weather conditions. In August, temperatures are typically mild, with a minimum of 14°C (57°F), an average of 17°C (63°F), and a maximum of 22°C (72°F). The month experiences 50 mm (2.0 in) of precipitation over about 9 days, along with a humidity level of 71%. In contrast, November sees much cooler temperatures, ranging from a minimum of 6°C (43°F) to an average of 12°C (54°F) and a maximum of 17°C (63°F). Precipitation significantly increases to 126 mm (5.0 in) across approximately 18 days, accompanied by a higher humidity of 90%. For further details, you can check out the Saint Peter Port weather in November.
In August, the weather in Saint Peter Port is relatively mild, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 22°C (72°F). The humidity is moderate at 71%, and although there is some precipitation, averaging 50 mm (2.0 in) over about 9 days, the overall feel is quite pleasant. In stark contrast, December brings significantly cooler conditions, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 14°C (58°F). The month also sees a higher level of precipitation, totaling 163 mm (6.4 in) over approximately 21 days, accompanied by increased humidity at 90%. For a closer look at the December weather in Saint Peter Port, check out Saint Peter Port weather in December.
August in Saint Peter Port offers a delightful blend of warm temperatures and vibrant coastal charm, making it stand out from other months. With average highs reaching a pleasant 17°C (63°F), the warmth beckons both locals and visitors to enjoy outdoor activities and scenic views. While you may encounter about 9 days of rain, the overall ambiance remains inviting, allowing for plenty of sunshine amidst occasional showers. The humidity levels of 71% contribute to a refreshing maritime feel, enhancing the experience of this picturesque harbor town. For a deeper understanding of what to expect throughout the year, check out Saint Peter Port Climate.