Last updated: August 27, 2025
In August, St. Moritz experiences a delightful blend of warmth and coolness, with maximum temperatures reaching 21°C (70°F) and an average of 10°C (51°F). While summer days can be pleasant, visitors should be prepared for the chillier evenings that can dip to 0°C (33°F). This month also brings significant precipitation, amounting to 195 mm (7.7 inches) over approximately 21 days, which contributes to the lush landscape characteristic of the region. With humidity levels around 80%, the air is refreshingly crisp, making August a dynamic time to explore the natural beauty of St. Moritz.
In August, St. Moritz experiences a delightful transition into summer, with temperatures gently rising compared to the colder months of the year. The minimum temperature hovers around 0°C (33°F), while the average sits comfortably at 10°C (51°F), providing a pleasant climate for outdoor activities. With a maximum temperature reaching 21°C (70°F), visitors can relish in the warm sunshine and stunning alpine scenery. This month marks a significant shift from the icy grip of winter, showcasing the enchanting beauty of Switzerland in a more temperate light, perfect for hiking, cycling, and enjoying the picturesque lakes of the region.
In August, St. Moritz experiences its wettest month of the year, with an average precipitation of 195 mm (7.7 in), marking a significant increase from the summer months preceding it. This trend of heightened rainfall continues with 21 precipitation days, paralleling the amounts seen in July but surpassing them. As summer transitions into early autumn, the region sees a shift in weather patterns, bringing lush, vibrant greenery to the picturesque alpine landscape. The increased precipitation not only enhances the natural beauty of St. Moritz but also signals the onset of a refreshing change in seasons, characterized by cooler temperatures and the onset of autumn colors.
In August, St. Moritz experiences a moderate humidity level of 80%, which aligns with a general trend of decreasing humidity as summer transitions into fall. Starting from a peak of 92% in January, humidity gradually declines through the warmer months, reaching its lowest point this month before increasing again in September. This pattern not only enhances the town's inviting summer climate but also highlights the crisp, refreshing air that St. Moritz is known for. As autumn approaches, the humidity rises once more, peaking at 90% in October, suggesting a renewed embrace of winter's chill just around the corner.
In August, St. Moritz experiences a UV Index of 9, maintaining its status in the very high exposure category, which means that sun protection is essential with a burn time of just 15 minutes. This peak in summer sunlight aligns with the earlier months of June and July, where the UV Index also reached 10. However, temperatures and conditions begin to shift slightly as the season transitions towards fall, reflected in a gradual decrease to 8 in September. Overall, the data reveals a summer trend where UV exposure is notably elevated, urging visitors to embrace protective measures throughout the warm months. For a detailed look at the UV levels and to plan your sun safety, check out St. Moritz UV Index.
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In the picturesque surroundings of St. Moritz, Switzerland, August basks in a generous 366 hours of sunshine, marking it as one of the peak months for bright days in this alpine haven. As summer unfolds, sunshine steadily accumulates, peaking in July with 410 hours before gracefully tapering off in the fall. This trend highlights the sun's warm embrace during the summer months, with June and July providing an enchanting backdrop for outdoor activities. As August transitions to September, the hours of sunlight decrease to 309 hours, signaling the approach of autumn yet still offering plenty of opportunities to enjoy the vibrant beauty of the Swiss landscape. Whether you're hiking the trails or sipping coffee by the lake, August in St. Moritz is a golden moment that invites you to savor every sunlit minute.
In St. Moritz, Switzerland, the likelihood of sunny weather in August stands at 32%, which is a welcome improvement compared to the summer months of June and July, both sitting at 27%. This slight uptick hints at a transitional shift as the region moves from midsummer into early autumn. While August enjoys a higher probability of sunshine than its immediate predecessors, it still reflects a pattern of fluctuating chances throughout the year, with brighter moments peeking through typically cloudier months. As summer wanes, the sunshine in August offers a glimmer of hope and warmth, inviting both locals and travelers to take advantage of the picturesque scenery St. Moritz has to offer.
In August, St. Moritz basks in a generous 14 hours of daylight, making it one of the last summer months to enjoy extended sunlight. This duration marks a gradual decline from the peak 15 hours seen in the preceding months of June and July. As we transition into fall, the days noticeably shorten, dropping to 12 hours by September. The pattern throughout the year reveals a vibrant spring and summer, where longer days encourage outdoor adventures, which contrast sharply with the shorter, cozier days of winter months like November and December, with just 9 and 8 hours of daylight, respectively. This rhythm of daylight not only enhances the natural beauty of St. Moritz but also invites visitors to indulge in a wealth of summer activities before the quieter, darker months arrive.
In August, St. Moritz experiences a gentle breeze with an average wind speed of 1.5 m/s (3 mph), slightly lower than the consistent winds of 1.7 m/s (4 mph) that characterize the summer months of June and July. This mild shift marks a transition as the late summer warmth gives way to the crispness of early autumn. Interestingly, July's winds peak just before the August lull, indicating a trend of consistent, moderate breezes that prevail throughout the summer, with only a modest decrease as the season begins to turn. As the month progresses into September, wind speeds dip further, echoing the gradual retreat of summer's vibrant energy and heralding the arrival of autumn in the enchanting Alps.
Weather in St. Moritz varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in St. Moritz, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present starkly contrasting weather conditions. In August, temperatures range from a minimum of 0°C (33°F) to a pleasant maximum of 21°C (70°F), with an average of 10°C (51°F). The month is characterized by significant rainfall, totaling 195 mm (7.7 in) over 21 days, and a humidity level of 80%. In contrast, January experiences much colder temperatures, with a minimum of -27°C (-17°F) and a maximum of just 2°C (36°F), averaging -11°C (12°F). Precipitation is notably lower at 75 mm (2.9 in) across 10 days, but the humidity is higher at 92%. For more detailed insights on January weather, you can check out St. Moritz weather in January.
When comparing the weather in August and February, the differences are striking. August experiences milder temperatures, with averages around 10°C (51°F) and highs reaching up to 21°C (70°F), whereas February is considerably colder, with an average of -8°C (18°F) and maximums only reaching 6°C (43°F). Precipitation is significantly higher in August, totaling 195 mm (7.7 in) over 21 days, compared to February's 59 mm (2.3 in) over just 11 days. Humidity levels are also notable, with August at 80% and February a bit higher at 89%, reflecting the winter chill. For more details about the weather specifics in February, visit St. Moritz weather in February.
In comparing the weather between August and March, a striking contrast emerges. August boasts a milder climate with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 21°C (70°F), coupled with an average temperature of 10°C (51°F). This month experiences significant rainfall, accumulating 195 mm (7.7 in) over 21 days, along with a humidity level of 80%. In contrast, March is characterized by much colder temperatures, with a minimum of -26°C (-14°F) and a maximum of 11°C (52°F), averaging -5°C (23°F). Precipitation in March is also lower, totaling 90 mm (3.5 in) over 13 days, and humidity is slightly higher at 87%. For a detailed breakdown of weather conditions, you can visit St. Moritz weather in March.
When comparing the weather in August and April, the differences are quite striking. August boasts milder temperatures, with a minimum of 0°C (33°F) and an average of 10°C (51°F), peaking at a comfortable 21°C (70°F). In contrast, April experiences much colder conditions, with temperatures dropping as low as -19°C (-1°F) and only reaching a maximum of 12°C (54°F).
Precipitation levels also vary significantly; August sees a substantial 195 mm (7.7 in) of rainfall over 21 days, while April has a more moderate 99 mm (3.9 in) over just 12 days. Humidity levels are relatively similar, with August at 80% and April slightly higher at 84%. For more detailed information about April’s weather, you can visit St. Moritz weather in April.
When comparing the weather patterns in St. Moritz during August and May, notable differences emerge. August presents a milder climate, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 21°C (70°F), while May experiences much chillier conditions, with lows reaching -13°C (8°F) and highs of only 18°C (65°F). Although both months have similar humidity levels at 80%, August receives more precipitation, totaling 195 mm (7.7 in) over 21 days, compared to May's 150 mm (5.9 in) spread across 22 days. For more specific insights on May weather, you can visit St. Moritz weather in May.
When comparing the weather in August to June, we see some notable differences. August experiences warmer temperatures with an average of 10°C (51°F) and a maximum of 21°C (70°F), while June is slightly cooler, with an average of 9°C (49°F) and a maximum of 25°C (77°F). However, June has a lower minimum temperature of -2°C (28°F) compared to August's minimum of 0°C (33°F). In terms of precipitation, August sees more rainfall, totaling 195 mm (7.7 in) over 21 days, whereas June has 159 mm (6.3 in) over just 19 days. The humidity levels are comparably high in both months, with August averaging 80% and June at 82%. For a more detailed look at June weather, check out St. Moritz weather in June.
In comparing the weather between July and August, both months experience similar temperature ranges with minimums at 0°C (33°F) and averages around 10°C (51°F). However, July tends to be slightly warmer with a maximum of 23°C (73°F) compared to August's 21°C (70°F). Precipitation is notably higher in August, totaling 195 mm (7.7 in) over 21 days, compared to July's 159 mm (6.3 in) during the same duration. Additionally, humidity levels are marginally lower in August at 80%, compared to July's 83%. For a more detailed look at July's weather, you can visit St. Moritz weather in July.
August and September exhibit notable differences in weather conditions. In August, temperatures range from a minimum of 0°C (33°F) to a maximum of 21°C (70°F), with an average of 10°C (51°F). The month is also characterized by significant rainfall, totaling 195 mm (7.7 in) over 21 days, while humidity averages around 80%. In contrast, September sees lower temperatures, with a minimum of -12°C (11°F), an average of 6°C (44°F), and a maximum of 18°C (65°F). Although September experiences less precipitation, totaling 126 mm (5.0 in) over 15 days, the humidity rises slightly to 83%. For those interested in more details about the weather in this period, you can visit St. Moritz weather in September.
In August, St. Moritz experiences milder temperatures ranging from a minimum of 0°C (33°F) to a maximum of 21°C (70°F), with an average of 10°C (51°F). The month sees substantial rainfall, totaling 195 mm (7.7 in), spread over 21 days, and humidity levels are relatively high at 80%. In contrast, October brings cooler temperatures, with a minimum reaching -10°C (14°F) and a maximum of 14°C (57°F), averaging only 2°C (36°F). Rainfall in October is lower, at 148 mm (5.8 in) over just 11 days, though humidity increases slightly to 90%. For more specific details, you can check St. Moritz weather in October.
In August, St. Moritz experiences mild temperatures, with averages around 10°C (51°F) and highs reaching up to 21°C (70°F). The month is relatively humid at 80% and sees significant precipitation, totaling 195 mm (7.7 in) across 21 days, making it one of the wetter months of the year. In contrast, November ushers in a much colder climate, with average temperatures plummeting to -4°C (25°F) and maximums only reaching about 8°C (47°F). The humidity rises slightly to 88%, accompanied by decreased precipitation, totaling 132 mm (5.2 in) over 14 days. For a deeper look into St. Moritz's November weather, visit St. Moritz weather in November.
August and December present stark contrasts in weather conditions. In August, temperatures range from a minimum of 0°C (33°F) to a maximum of 21°C (70°F), with an average of 10°C (51°F). The month experiences significant precipitation, totaling 195 mm (7.7 in) over 21 days, and humidity levels hover around 80%. In contrast, December is considerably colder, with temperatures dipping as low as -26°C (-14°F), averaging -9°C (16°F), and peaking at just 2°C (37°F). It sees less precipitation, with 125 mm (4.9 in) spread over 15 days, though humidity is slightly higher at 90%. For a closer look at the December weather specifics, check out St. Moritz weather in December.
August in St. Moritz presents a unique blend of warmth and moisture, setting it apart from other months. With average temperatures lingering around a comfortable 10°C (51°F), daytime highs can reach up to 21°C (70°F), offering a pleasant environment for outdoor activities. However, expect a fair share of rainfall as 21 days contribute to a total precipitation of 195 mm (7.7 in), creating a lush landscape complemented by 80% humidity. This combination of warmth and rainfall fosters a vibrant atmosphere, making August an inviting time to experience the natural beauty of St. Moritz. For more insights on St. Moritz's weather throughout the year, visit St. Moritz Climate.