Last updated: August 27, 2025
Experience the enchanting August weather in Sierre, Switzerland, where summer lingers with maximum temperatures reaching a pleasant 26°C (80°F). Throughout the month, the average temperature settles around a comfortable 13°C (56°F), while nighttime brings a refreshing drop to a minimum of 1°C (34°F). Although precipitation totals a moderate 129 mm (5.1 in) over 16 days, creating a lush backdrop, the humidity rests at a high 77%, enhancing the rich atmosphere of this picturesque Alpine town. Whether you're exploring the breathtaking landscapes or savoring local delights, Sierre's August weather offers a delightful blend of warmth and freshness.
In August, Sierre, Switzerland, enjoys a delightful summer embrace, with temperatures that reflect a pleasant warmth. Minimum temperatures settle around 1°C (34°F), offering a crisp morning air that smoothly transitions into average highs of 13°C (56°F), making it ideal for daytime adventures. The maximum temperatures can soar to 26°C (80°F), inviting locals and visitors alike to bask in the sun’s glow. This month stands out as a significant contrast to the frigid winter months, where January sees chilling lows of -27°C (-17°F). The gradual climb from cooler spring temperatures leads to a vibrant and inviting climate in August, perfect for exploring the stunning Alpine landscapes and enjoying outdoor activities.
In August, Sierre experiences a notable shift in precipitation, receiving 129 mm (5.1 in) over the course of 16 days. This amount, while slightly lower than June and May, is indicative of the region's lush summer climate. As summer peaks, rain continues to nourish the surrounding landscapes, maintaining the vibrant greenery seen throughout the valleys. Interestingly, August's rainfall is part of a consistent trend of relatively high precipitation in the summer months, with monthly totals hovering around the 120 mm mark since July. The frequent rain showers during this period not only contribute to the area's natural beauty but also create a refreshing environment for locals and visitors alike, blending perfectly into the idyllic Swiss summer scenery.
August in Sierre, Switzerland provides a refreshing break in the summer heat, with humidity levels dipping to 77%. This marks a notable decrease from the higher humidity of earlier summer months like July, which maintains a consistent 82%. The trend illustrates a gradual decline from the cold winter months, where humidity hovers around 91% in January, dropping as we approach late summer. As September rolls in, humidity levels return to 81%, indicating a shift towards the wetter seasons. Overall, August offers a comforting balance, making it a delightful time to enjoy the outdoors before the autumn humidity sets back in.
In August, Sierre experiences a UV Index of 9, placing it in the very high exposure category with a burn time of just 15 minutes. This month marks a slight decline from the peak of 11 in June, yet it remains significantly elevated compared to the earlier months. The transition from summer's extreme levels to a very high index underscores the importance of UV protection. Consistently, from April through August, the UV Index stays above 8, indicating that sun safety measures should be a priority for residents and visitors alike. As the season shifts towards September, the UV Index is expected to decrease to 7, but care should still be taken during outdoor activities. For more detailed information about UV levels throughout the year, check out Sierre UV Index.
UV Risk Categories
In Sierre, Switzerland, August shines brightly with an impressive 383 hours of sunshine, making it a key highlight of the summer season. Following the peak of July, which boasts 416 hours, August sees a slight dip in sunlight but remains generous compared to the earlier months, showcasing an enduring warmth as summer transitions into autumn. The sunshine hours steadily increase from the winter months of January and February, where just 176 and 234 hours prevail, eventually culminating in the vibrant blooms of late spring and early summer. This gradual rise to the summer peak is mirrored in the subsequent months, as September sees a notable reduction to 323 hours, hinting at the shifting seasons and cooler days ahead. Overall, August in Sierre encapsulates the essence of summer’s warmth while paving the way for the picturesque autumn to follow.
In August, Sierre enjoys a 37% chance of sunny weather, which is slightly higher than the summer months of July and June, indicating a gradual improvement as the summer progresses. This modest likelihood positions August among the warmer months, yet it remains below the peak sunshine opportunities seen in spring and early autumn months like March and October. Despite the fluctuations, the overall trend suggests that while August offers respectable chances for sunshine, it may not be the sunniest month of the year. As summer winds down, those in Sierre can still hold onto the hope of enjoying pleasant, sunny days before the autumn chill sets in.
In August, Sierre, Switzerland, enjoys a delightful 14 hours of daylight, marking a subtle decline from the peak summer months of June and July, where daylight stretched to 15 hours. This gradual tapering signifies the transition towards autumn, as daylight hours begin to shorten in the subsequent months. Interestingly, the progression of daylight duration throughout the year reveals a clear pattern: starting at just 9 hours in January, the days lengthen dramatically, reaching their zenith in the summer before embarking on a steady descent back to winter's shorter days. As August unfolds, residents and visitors alike can bask in the warm summer glow, yet they may also sense the impending shift in seasons, making it a perfect time to enjoy the beauty and vibrancy of the Swiss landscape.
In Sierre, Switzerland, the August wind typically mirrors the gentle breeze of the preceding summer months, with an average wind speed of 1.1 m/s (3 mph). This slight but consistent wind pattern is part of a broader trend observed throughout the year, where winds remain predominantly mild. Notably, the year begins with a slight uptick in wind speeds in January and February, peaking at 1.6 m/s (4 mph) before gradually tapering off. The gentle nature of the winds during summer and autumn signifies a serene climate, making Sierre a pleasant destination for those seeking to enjoy the tranquility of the Swiss landscape. As the year progresses into the cooler months, wind speeds begin to stabilize, hovering around 1.3 to 1.4 m/s, indicating a subtle resilience in the pleasant breezes that characterize this enchanting region.
Weather in Sierre varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sierre, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather conditions in Sierre. In August, temperatures range from a mild 1°C (34°F) to a warm 26°C (80°F), with an average of 13°C (56°F). The month sees considerable rainfall, with 129 mm (5.1 in) of precipitation over about 16 days, and humidity averaging 77%. In stark contrast, January experiences much colder temperatures, with a minimum of -27°C (-17°F) and a maximum of 6°C (44°F), averaging -9°C (16°F). Although January has slightly more precipitation at 135 mm (5.3 in), it occurs over fewer days, at just 10. The humidity in January is higher, reaching 91%. For more details on January weather in Sierre, you can visit Sierre weather in January.
August and February present stark contrasts in weather conditions. In August, temperatures range from a minimum of 1°C (34°F) to a pleasant maximum of 26°C (80°F), with an average of 13°C (56°F), accompanied by significant rainfall of 129 mm (5.1 in) over 16 days. The humidity level sits at a moderate 77%, making days feel warm and somewhat muggy. In contrast, February experiences chilling temperatures, dipping as low as -23°C (-8°F) and peaking at 11°C (52°F), with an average temperature of -5°C (23°F). Precipitation is lower at 95 mm (3.8 in) across 11 days, but the humidity is higher at 89%, contributing to a crisp, biting cold that defines the winter month. For a closer look at February weather, check out Sierre weather in February.
August and March present starkly contrasting weather patterns. In August, temperatures range from a mild 1°C (34°F) at night to a warm max of 26°C (80°F) during the day, accompanied by an average humidity of 77% and 129 mm of precipitation over 16 rainy days. In contrast, March experiences much colder temperatures, with a minimum of -25°C (-12°F) and a maximum of 14°C (57°F), albeit with slightly less precipitation at 122 mm over 15 days. The humidity in March is higher at 87%, contributing to the chilly atmosphere. For more detailed information on the weather in March, visit Sierre weather in March.
When comparing the weather in August and April, there's a notable contrast in temperatures and overall conditions. August boasts a milder temperature range, with average highs reaching 26°C (80°F) and a relatively high humidity of 77%. In contrast, April sees a more significant chill, with average highs only climbing to 17°C (63°F) and lows dropping to -17°C (1°F), although it has a slightly higher humidity level of 84%. Precipitation is also more frequent in August, occurring over 16 days with a total of 129 mm (5.1 in), while April records 81 mm (3.2 in) over 11 days. For a detailed look at April conditions, you can visit Sierre weather in April.
In comparing the weather of August and May, notable differences emerge. August typically experiences milder temperatures, with average highs reaching 26°C (80°F) compared to May's maximum of 22°C (72°F). However, May's temperatures can drop significantly lower, with minimums plunging to -16°C (4°F), whereas August's temperatures are more consistently warm, with lows of 1°C (34°F). Precipitation is relatively high in both months, with August receiving 129 mm (5.1 in) over 16 days and May accumulating 160 mm (6.3 in) over 20 days. Humidity levels are comparably high, with May at 80% and August at 77%. For a more detailed comparison of May conditions, you can refer to this link: Sierre weather in May.
When comparing the weather in August and June, we can see that both months display a range of temperatures and comparable precipitation levels. August typically experiences a slightly milder minimum temperature of 1°C (34°F) and an average of 13°C (56°F), while June starts with a cooler minimum of -4°C (25°F) but has a similar average temperature of 12°C (53°F). Both months have almost the same maximum temperature, with August peaking at 26°C (80°F) and June at 27°C (81°F). Regarding precipitation, both months receive similar amounts, with 129 mm (5.1 in) in August and 130 mm (5.1 in) in June, falling on average over 16 days. The humidity is slightly lower in August at 77% compared to June's 82%, making June feel a bit more humid. For a detailed look at June's climate, you can visit Sierre weather in June.
In comparing the weather between July and August, July exhibits slightly warmer conditions with an average temperature of 14°C (57°F) and a maximum of 28°C (82°F), compared to August's average of 13°C (56°F) and maximum of 26°C (80°F). While both months share similar humidity levels, with July at 82% and August at 77%, precipitation levels show August receiving a bit more rain at 129 mm (5.1 in) over 16 days compared to July's 121 mm (4.8 in). For more details on July's weather specifics, you can visit Sierre weather in July.
August and September present a notable shift in weather patterns. In August, temperatures range from a minimum of 1°C (34°F) to a maximum of 26°C (80°F), with an average temperature of 13°C (56°F) and 129 mm (5.1 in) of precipitation over 16 days. The humidity is relatively high, at 77%. In contrast, September experiences cooler temperatures, with a minimum of -5°C (23°F), an average of 9°C (49°F), and a maximum of 22°C (72°F). The month sees less rainfall, totaling 90 mm (3.6 in) across 12 days, and a slightly higher humidity level of 81%. For more details on September weather, you can check Sierre weather in September.
August and October present markedly different weather patterns. In August, temperatures range from a mild 1°C (34°F) at night to a warm 26°C (80°F) during the day, with an average of 13°C (56°F). However, this month also sees significant precipitation, totaling 129 mm (5.1 in) over 16 days, accompanied by a humidity level of 77%. In contrast, October experiences cooler temperatures, with a minimum of -6°C (21°F) and a maximum of 18°C (64°F), averaging at just 5°C (41°F). The month also has slightly higher precipitation at 135 mm (5.3 in) across 13 days, and humidity increases to 89%. For a detailed look at the weather during October in Sierre, visit Sierre weather in October.
August and November present a stark contrast in weather conditions. In August, temperatures range from a mild 1°C (34°F) at night to a pleasant maximum of 26°C (80°F) during the day, with an average of 13°C (56°F). The month is relatively humid with a humidity level of 77% and experiences around 129 mm (5.1 in) of precipitation over 16 days. In contrast, November plunges into much colder temperatures, with nighttime lows averaging -23°C (-10°F) and daytime highs reaching only up to 14°C (58°F), resulting in an average temperature of -2°C (29°F). While November receives slightly less precipitation at 98 mm (3.8 in) over 14 days, the humidity rises to 89%, enhancing the chilly atmosphere. For a detailed look at November's climate, you can refer to Sierre weather in November.
August and December showcase stark contrasts in weather conditions. In August, temperatures range from a mild 1°C (34°F) to a warm 26°C (80°F), with an average of 13°C (56°F), while December plunges to much colder temperatures, ranging from a chilling -30°C (-22°F) to a maximum of 7°C (45°F) and averaging -8°C (18°F). Precipitation levels in August reach 129 mm (5.1 in) over 16 days, whereas December experiences higher precipitation at 188 mm (7.4 in) over the same number of days, coupled with increased humidity at 91% compared to August's 77%. For more detailed weather information, you can check out Sierre weather in December.
August in Sierre stands out as a month of warm, lingering summer days, characterized by a pleasant average temperature that contrasts with the cooler spring and autumn months. While it enjoys the highest temperatures of the year, with maximums reaching up to 26°C, it also experiences a fair share of rainy days, contributing to its overall 129 mm of precipitation. This combination leads to an higher humidity level of 77%, making the air feel quite tropical, especially compared to the drier winter months. For those looking to understand the full spectrum of weather in Sierre throughout the year, more insights can be found in our detailed page on Sierre Climate.