Last updated: February 6, 2025
Experience the captivating August weather of San Sebastian, Spain, where temperatures soar to a maximum of 31°C (88°F), offering plenty of sunshine and warmth. The delightful average temperature hovers around 20°C (67°F), while evenings cool down to a minimum of 12°C (53°F), perfect for those breezy coastal strolls. Despite the inviting climate, be prepared for the occasional shower, as the city sees about 95 mm (3.7 in) of precipitation over 15 days, making it essential to have an umbrella on hand. With humidity at 76%, the air is vibrant and rich, enhancing the overall ambiance of this picturesque coastal gem.
In San Sebastian, August marks the peak of summer, bringing delightful warmth to this beautiful coastal city. With temperatures ranging from a minimum of 12°C (53°F) to a comfortable average of 20°C (67°F), locals and visitors alike relish the vibrant atmosphere of the city. The maximum temperature can soar up to 31°C (88°F), making it ideal for beach days and outdoor fiestas. This month showcases a noticeable rise in warmth compared to the cooler months, offering a perfect blend of sunny days and inviting evenings. As summer transitions into fall, August stands out for its lively ambiance, drawing crowds eager to enjoy the sunshine and the rich cultural experiences that San Sebastian offers.
In August, San Sebastian experiences a moderate shift in its precipitation patterns, recording 95 mm (3.7 in) of rain over 15 days. This marks a slight increase from July's drier spell, which had only 93 mm (3.7 in) over the same number of days. As summer wanes, the city sees a gentle resurgence in rainfall, signaling the approach of the wetter autumn months. Interestingly, while August's rainfall is relatively low compared to the heavier downpours of later months like November and December, the consistent 15 rain days indicate that the weather can still be unpredictable, offering a mix of sun and showers for locals and
In August, San Sebastian experiences a welcome dip in humidity, averaging around 76%, making it one of the least humid months of the year. This slight decrease follows a trend of steady humidity levels from early spring through summer, hovering between 80% and 82% in the months leading up to August. As the summer peaks, the drop to 76% not only provides respite from the sticky heat but also signals the approach of autumn, where humidity begins to rise again. Observing the overall pattern, it’s clear that San Sebastian transitions from the moist embrace of winter and spring, which see humidity levels between 85% and 87%, to a more comfortable, albeit gradually increasing humidity as the year progresses. This makes August a prime time for enjoying the city’s vibrant coastal lifestyle with pleasant weather and fresher air.
In August, San Sebastian experiences a UV Index of 9, categorized as very high, which means that sun protection is essential for outdoor activities. With a burn time of just 15 minutes, it's crucial to be proactive about sun safety, similar to the intense sun conditions seen in the preceding months of June and July. As summer peaks, residents and visitors alike should be mindful of the elevated UV levels, especially as we transition into September, when the UV Index begins to decline to 7. This trend showcases the importance of safeguarding your skin during the warmer months. For detailed insights on UV levels throughout the year, visit San Sebastian UV Index.
UV Risk Categories
August in San Sebastián radiates warmth with an impressive 385 hours of sunshine, making it one of the sunniest months of the year. This month, while slightly lower than July's peak of 403 hours, still maintains a vibrant atmosphere that beckons both locals and tourists alike. As summer progresses from the bright days of June (380 hours) to the lively scenes of August, the gradual decrease signals the onset of autumn, yet the golden rays linger into September with 335 hours. Overall, the trend showcases a steady increase in sunshine from the start of the year, culminating in the peak summer months, before a gentle decline as the year winds down. This enchanting blend of sun and sea makes San Sebastián a delightful destination to bask in warmth and culture during the summer's close.
In August, San Sebastian enjoys a 37% chance of sunny weather, reflecting a notable increase from the chillier winter months where the likelihood hovers around 21%. As summer unfolds, the chances of sunshine steadily rise from 34% in July to 37%, suggesting that this coastal city embraces warmth and light during this peak holiday season. While August doesn't boast the highest probability of sun compared to the transition months of March (43%) or October (38%), it still offers a delightful backdrop for beachgoers and outdoor enthusiasts alike. Therefore, while packing for your August getaway, it's wise to anticipate both sun and the occasional cloud, ensuring you make the most of this beautiful Spanish destination.
In August, San Sebastian basks in approximately 13 hours of daylight, marking a gentle decline from the long, sun-filled days of summer. This month sits comfortably between the peak of 15 hours in June and the softer glow of 12 hours in September, embodying the vibrant transition towards autumn. As the warmth of summer lingers, August invites residents and visitors alike to savor the twilight of summer evenings, making it an ideal time for outdoor activities and leisurely strolls along the beautiful coastline. The gradual reduction in daylight serves as a reminder of the changing seasons, while still offering ample opportunity to soak in the sun's rays.
In August, the coastal charm of San Sebastian is complemented by its gentle breezes, with the average wind speed dropping to a mellow 2.6 m/s (6 mph). This marks the calmest point in the year, following a gradual decline since July, which had choppy winds at 2.8 m/s. As summer reaches its peak, these lighter winds create a relaxed atmosphere, perfect for enjoying beachside activities and leisurely strolls along the picturesque coastline. Interestingly, as the seasons transition into fall, the winds begin to pick up slightly in September, hinting at a refreshing change. Overall, the trend throughout these summer months underscores the tranquil allure of San Sebastian, drawing visitors to bask in its serene shores.
The weather in San Sebastian 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 San Sebastian and find detailed weather information for every month.
August and January present starkly contrasting weather conditions. In August, temperatures range from a mild 12°C (53°F) at night to a warm 31°C (88°F) during the day, complemented by an average temperature of 20°C (67°F). While the month sees some precipitation—95 mm (3.7 in) over 15 days—the humidity remains relatively comfortable at 76%. In contrast, January experiences much colder temperatures, with lows of -2°C (29°F) and a high of 18°C (65°F), averaging around 7°C (45°F). This winter month is wetter, with 147 mm (5.8 in) of rainfall over 14 days and higher humidity at 86%. For a more detailed look at January weather, check out San Sebastian weather in January.
August and February in San Sebastian present stark contrasts in weather. August typically enjoys milder temperatures, ranging from a minimum of 12°C (53°F) to a maximum of 31°C (88°F), while February sees much colder conditions, with temperatures dropping to as low as -4°C (25°F) and peaking at 22°C (71°F). Precipitation is more prevalent in February, with an average of 130 mm (5.1 in) over 13 days, compared to August's 95 mm (3.7 in) across 15 days. Additionally, humidity levels are higher in February at 85%, compared to 76% in August. For more detailed insights into February’s weather, you can check San Sebastian weather in February.
The weather in August and March presents a striking contrast. In August, temperatures range from a comfortable minimum of 12°C (53°F) to a maximum of 31°C (88°F), with an average of 20°C (67°F). This month experiences 95 mm (3.7 in) of precipitation over 15 days, alongside a humidity level of 76%. Conversely, March sees much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 22°C (71°F), averaging only 10°C (51°F). Rainfall is slightly higher in March, totaling 124 mm (4.9 in) over 17 days, with humidity peaking at 82%. For more details on this transitional month, you can check out San Sebastian weather in March.
In comparing the weather between August and April, we see notable differences in temperature and precipitation patterns. August features warmer temperatures with an average of 20°C (67°F), peaking at a maximum of 31°C (88°F), making it significantly warmer than April, which has an average of 12°C (54°F) and a maximum of only 23°C (74°F). However, April experiences slightly higher precipitation, with 108 mm (4.3 in) over 14 days, compared to August's 95 mm (3.7 in) over 15 days. Humidity levels are also a bit higher in April at 81%, while August maintains a humidity level of 76%. For more detailed information on April weather, you can check out San Sebastian weather in April.
When comparing the weather in August and May, we can see notable differences. August tends to be warmer, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 31°C (88°F), resulting in an average temperature of 20°C (67°F). In contrast, May's temperatures are cooler, with a minimum of 4°C (39°F) and a maximum of 27°C (80°F), averaging just 14°C (58°F). Precipitation is also significant in both months; however, May experiences slightly more, with 120 mm (4.7 in) over 17 days compared to August's 95 mm (3.7 in) over 15 days. While humidity remains high in both months, it reaches 80% in May, slightly higher than August's 76%. For a more detailed look at May weather, check out San Sebastian weather in May.
When comparing the weather in August and June, we see some interesting distinctions. August generally has a warmer average temperature of 20°C (67°F), with a maximum of 31°C (88°F), while June's average is cooler at 17°C (63°F), peaking at 32°C (90°F). Despite June reaching higher maximum temperatures, it also experiences more precipitation, with 135 mm (5.3 in) over 15 days, compared to August's 95 mm (3.7 in) under similar rainfall days. Additionally, humidity levels are slightly higher in June at 81%, compared to August's 76%. For more detailed information, you can check out San Sebastian weather in June.
In comparing the weather between July and August, both months experience similar minimum temperatures, with July having a slightly higher average temperature of 19°C compared to August's 20°C. However, August features more pronounced warmth on the higher end, with maximum temperatures reaching up to 31°C, while July peaks at 33°C. Both months experience similar levels of precipitation, with August receiving 95 mm across 15 days and July slightly less at 93 mm over 14 days. Additionally, humidity levels are slightly lower in August at 76% compared to July's 80%. For a more detailed look at July's weather, you can visit San Sebastian weather in July.
August and September exhibit notable differences in weather patterns. In August, temperatures range from a minimum of 12°C (53°F) to a maximum of 31°C (88°F), with an average of 20°C (67°F). The month experiences a good amount of precipitation, accumulating 95 mm (3.7 in) over 15 days, and maintaining a humidity level of 76%. Meanwhile, September shows a slight drop in temperatures, with a minimum of 9°C (48°F), an average of 18°C (65°F), and a maximum of 29°C (85°F). Precipitation in September is marginally higher at 97 mm (3.8 in) but occurs over fewer days, totaling 12. Humidity decreases slightly to 75%. For a detailed overview of September weather, visit San Sebastian weather in September.
August and October present quite different weather experiences. In August, temperatures can reach a maximum of 31°C (88°F) with an average of 20°C (67°F), making it a warm month, though it also sees considerable humidity at 76% and about 95 mm (3.7 in) of precipitation over 15 days. In contrast, October offers a cooler climate, with maximum temperatures peaking at 26°C (79°F) and an average of 15°C (59°F). While it is more humid at 81%, rainfall increases to 135 mm (5.3 in) across 14 days. For more detailed information, check out San Sebastian weather in October.
In August, the weather is warm and pleasant with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 31°C (88°F), and relatively lower precipitation of 95 mm (3.7 in) over 15 days. The average humidity sits around 76%, making it feel quite comfortable during the summer months. In contrast, November brings a notable drop in temperatures, with averages between 2°C (36°F) and 22°C (72°F), and increased rainfall totaling 190 mm (7.5 in) over 18 days. The humidity rises to 85%, contributing to a more autumnal feel. For a deeper look into November weather, you can visit San Sebastian weather in November.
The weather in August features milder temperatures, with averages around 20°C (67°F) and a maximum of 31°C (88°F), while December experiences a significant drop, with average temperatures of just 9°C (49°F) and a maximum of 18°C (64°F). In terms of precipitation, December is noticeably wetter, receiving 217 mm (8.5 in) over 17 days compared to August’s 95 mm (3.7 in) over 15 days, contributing to a higher humidity of 87% in December as opposed to 76% in August. For a more detailed look at December's weather, check out this link: San Sebastian weather in December.
August in San Sebastián brings a delightful warmth that sets it apart from the other months, with temperatures peaking at 31°C (88°F) and an inviting average of 20°C (67°F). However, with moderate humidity at 76% and around 15 days of rainfall adding up to 95 mm (3.7 in), this month also carries a hint of unpredictability. While sunshine is abundant, visitors should be prepared for occasional showers, making it a unique blend of summer warmth and coastal freshness. For a deeper dive into what to expect throughout the year, check out San Sebastian Climate.