Last updated: August 27, 2025
August in Rapperswil, Switzerland offers a dynamic blend of warmth and moisture, characterized by a maximum temperature reaching 32°C (90°F) and a comfortable average of 18°C (65°F). However, the month is not without its challenges, as it experiences 15 days of precipitation, totaling 158 mm (6.2 in), contributing to an overall humidity level of 80%. This combination creates a lush, vibrant atmosphere, making it an enchanting time for visitors to bask in the scenic beauty of this lakeside town while navigating its unpredictable summer storms.
In August, Rapperswil, Switzerland, basks in the warmth of summer, featuring temperatures that typically range from a comfortable 8°C (46°F) to a peak of 32°C (90°F). With an average temperature of 18°C (65°F), this picturesque lakeside town invites outdoor activities and leisurely strolls along its scenic shores. As the month progresses, you can feel the lingering warmth reminiscent of July, making it an ideal time for swimming, sunbathing, and exploring the vibrant local culture. However, as summer wanes, the cooler evenings remind visitors that autumn is just around the corner, setting the stage for a beautiful seasonal transition. Overall, August offers a delightful escape with its pleasant temperatures and stunning natural surroundings.
In August, Rapperswil experiences a significant uptick in rainfall, with 158 mm (6.2 in) of precipitation recorded over approximately 15 days. This places August among the wetter months, following a particularly rainy June (187 mm) and a moderately damp July (145 mm). The consistent rainfall creates a lush backdrop as summer transitions into fall, supporting the vibrant local ecosystem. Notably, August's precipitation is slightly less than the peak of June, yet it still holds its own against the rainfall of the preceding warmer months, indicating a trend of late summer showers that provide necessary moisture before autumn settles in.
In Rapperswil, Switzerland, August brings a level of humidity that settles at a comfortable 80%, maintaining the trend of warmer summer months. As the year progresses from the chilly winter of January, which starts at an impressive 92%, the humidity gradually tapers down through the spring and summer. April sees a notable decrease to 84%, while both June and July hover around 82% and 83%. This subtle decline continues into August, where despite the warmth, a dip to 80% offers a delightful respite before the humidity spikes again in the fall. Notably, September bounces back to 83%, hinting at the changing seasons. Overall, the humidity levels throughout Rapperswil reflect a graceful ebb and flow, echoing the region's picturesque seasonal transitions.
In August, Rapperswil experiences a UV Index of 8, classifying it within the very high exposure category. This means that while residents and visitors enjoy the sun-soaked days of late summer, they also need to be cautious about sun exposure, as the burn time is a brief 15 minutes. This monthly reduction in safe exposure times marks a slight dip from the intense heights reached in June and July, where the UV Index peaked at 10 and 9, respectively. As summer winds down, the patterns indicate a trend of decreasing UV radiation, leading into September's high category of 6. To stay protected during these sunny days, it’s essential to plan outdoor activities strategically. For more details, check out the Rapperswil UV Index.
UV Risk Categories
August in Rapperswil, Switzerland, basks in the glow of 377 hours of sunshine, marking a delightful continuation of the summer season. Following the peak of 410 hours in July, the sun's vibrant presence begins to wane, yet August still offers a significant bounty for outdoor enthusiasts and sun-seekers alike. The trend of increasing sunlight from winter into summer is evident, with each month prior to August showcasing a steady climb, from a mere 163 hours in January to May's idyllic 365 hours. As the year transitions into fall, September witnesses a gentle decline to 314 hours, reminding us that Rapperswil’s sunshine is a cherished gift, well appreciated during the warm summer months before autumn’s embrace.
In Rapperswil, Switzerland, the likelihood of sunny weather in August is measured at a reasonable 37%, fitting into a trend of fluctuating sunshine throughout the year. While it does not top the sunniest months, August benefits from increased daylight and warmth following the mid-year peak, with July presenting a similar 34% chance. This modest probability hints at a mix of sunny and cloudy days, typical for the tail end of summer. As the seasons shift toward autumn, the chance of sunshine does increase again in September to 43%, promoting a return to more clear skies. Therefore, while August may not guarantee endless sunshine, it still invites opportunities for outdoor enjoyment amid a blend of sun and clouds.
August marks a gentle transition in Rapperswil’s daylight duration, offering an inviting 14 hours of sunlight. This month continues the trend of long days established in the summer, yet it begins to hint at the approaching autumn. June, July, and August showcase the peak of daylight, with each month basking in a consistent 15 hours before gradually tapering off. As August slips into September, daylight decreases to 12 hours, signaling the seasonal shift and the fading warmth of summer. This pattern of longer days in the spring and summer gradually yielding to shorter days in the fall underscores the rhythmic dance of time in this picturesque Swiss town.
In August, Rapperswil experiences a gentle breeze with an average wind speed of 1.5 m/s (3 mph), matching the calmness of the preceding months of July and September. This slight decline in wind speed from May's peak of 2.2 m/s (5 mph) signals the onset of late summer, where the air is typically warmer and more serene. The month continues the trend of minimal wind, a characteristic feature of the region during the summer, allowing residents and visitors to enjoy the picturesque lakeside views and warm weather without the interruption of brisk gusts. As autumn approaches, the winds are expected to gently rise again, setting the stage for a refreshing change in the air.
Weather in Rapperswil varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Rapperswil, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in August and January presents a striking contrast. In August, temperatures range from a mild 8°C (46°F) at night to a warm 32°C (90°F) during the day, with an average of 18°C (65°F). This summer month sees considerable rainfall, totaling 158 mm (6.2 in) over approximately 15 days, and humidity levels are around 80%. In contrast, January is characterized by much colder temperatures, with nighttime lows plunging to -12°C (10°F) and daytime highs reaching only 13°C (56°F), averaging a frigid 0°C (32°F). Although January experiences less precipitation at 127 mm (5.0 in) over 12 days, the humidity is higher at 92%. For more detailed insights into January weather, you can check out Rapperswil weather in January.
August and February present stark contrasts in weather. In August, temperatures range from a chilly 8°C (46°F) at night to a warm 32°C (90°F) during the day, with an average of 18°C (65°F). It's a month characterized by high humidity at 80% and considerable rainfall, totaling 158 mm (6.2 in) across about 15 days. In contrast, February brings much colder conditions, with temperatures dipping as low as -15°C (6°F) and peaking at only 17°C (62°F), yielding a much lower average of 2°C (36°F). Despite having less total precipitation at 95 mm (3.7 in) over 12 days, February's humidity is slightly higher at 89%. For a closer look at February weather specifics, you can check Rapperswil weather in February.
In comparing the weather of August and March, notable differences emerge in both temperature and precipitation. August offers a warmer climate, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 32°C (90°F) and an average of 18°C (65°F). The month experiences considerable rainfall, with 158 mm (6.2 in) spread over 15 days and a humidity level of 80%. In contrast, March is much cooler, featuring temperatures that range from a chilly -16°C (4°F) to a more moderate 19°C (67°F), with an average of just 4°C (40°F). While it experiences slightly less rainfall at 112 mm (4.4 in) over 17 days, March also maintains a higher humidity level of 87%. These differences exemplify the seasonal transition from winter to summer. For more detailed information, you can check Rapperswil weather in March.
When comparing the weather in August and April, it's clear that August is much warmer and wetter. August boasts an average temperature of 18°C (65°F) with maximums reaching up to 32°C (90°F), while April's average temperature is notably cooler at 8°C (47°F), peaking at 24°C (76°F). Additionally, August experiences higher precipitation levels, with 158 mm (6.2 in) spread over 15 days, compared to April's 87 mm (3.4 in) over 12 days. Humidity levels are relatively similar, with August at 80% and April slightly higher at 84%. For more specific insights about conditions in April, you can check Rapperswil weather in April.
In comparing the weather of August and May, we see distinct differences in temperature and precipitation patterns. August boasts a much warmer climate with average temperatures around 18°C (65°F) and highs reaching up to 32°C (90°F), while May experiences cooler temperatures, with an average of 12°C (53°F) and a maximum of 28°C (84°F). Both months receive a similar amount of precipitation, around 158 mm in August and 159 mm in May, but May has a slightly longer rainy duration, with 20 rainy days compared to 15 in August. The humidity remains constant at 80% in both months, contributing to the overall damp feel. For more details on May weather, you can check Rapperswil weather in May.
When comparing the weather in August and June, we can see some notable differences. August tends to be slightly warmer with an average temperature of 18°C (65°F), compared to June's average of 17°C (63°F). Both months share the same maximum temperature of 32°C (90°F), but August experiences a minimum temperature of 8°C (46°F), which is higher than June's minimum of 4°C (40°F). In terms of precipitation, June is somewhat rainier, receiving 187 mm (7.4 in) over 17 days, whereas August has 158 mm (6.2 in) over 15 days. Additionally, the humidity levels are quite similar, with August at 80% and June slightly higher at 82%. For more details, you can check Rapperswil weather in June.
In comparing the weather of July and August, we observe that both months feature a similar range of temperatures, with minimums around 8°C (46-47°F), average temperatures of 18°C (65°F), and maximums reaching 32°C (90°F) in August and 33°C (91°F) in July. However, August tends to be slightly wetter, receiving 158 mm (6.2 in) of precipitation over 15 days, compared to July's 145 mm (5.7 in) over 16 days. Additionally, humidity levels are marginally lower in August at 80%, compared to 83% in July, indicating a possibly more comfortable atmosphere as summer winds down. For a more detailed look at July's climate in the area, visit Rapperswil weather in July.
August and September present a notable shift in weather patterns. In August, temperatures range from a minimum of 8°C (46°F) to a maximum of 32°C (90°F), with an average of 18°C (65°F). The month also sees significant rainfall, totaling 158 mm (6.2 in) over about 15 days, accompanied by high humidity levels at 80%. In contrast, September experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 27°C (80°F), averaging 14°C (57°F). Precipitation decreases to 123 mm (4.9 in) over approximately 14 days, while humidity slightly rises to 83%. This transition marks the onset of autumn, with September offering a more brisk and refreshing climate compared to the warm and humid August. For more details, check out Rapperswil weather in September.
August offers a much warmer climate compared to October, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 32°C (90°F), averaging around 18°C (65°F). In contrast, October sees cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 22°C (72°F), averaging only 10°C (50°F). Precipitation is frequent in both months, with August experiencing 158 mm (6.2 in) over 15 days, while October has slightly less at 128 mm (5.0 in) over 13 days. Interestingly, October also has higher humidity levels at 90%, compared to August's 80%. For more details on October weather, you can check Rapperswil weather in October.
In August, the weather is characterized by warm temperatures, ranging from a minimum of 8°C (46°F) to a maximum of 32°C (90°F), with an average of 18°C (65°F). This month typically experiences high precipitation levels of 158 mm (6.2 in) spread over 15 days, combined with a humidity of 80%. In contrast, November brings significantly cooler conditions, with temperatures dipping to a minimum of -5°C (24°F) and a maximum of 20°C (69°F), averaging only 4°C (40°F). Although November receives less precipitation at 80 mm (3.1 in) over 13 days, the humidity reaches a higher level of 88%. For more details, check out Rapperswil weather in November.
August and December present stark contrasts in weather conditions. In August, temperatures can soar from a minimum of 8°C (46°F) to a maximum of 32°C (90°F), with an average of 18°C (65°F). This month also sees a fair amount of rain, with 158 mm (6.2 in) of precipitation spread over 15 days and humidity levels around 80%. In contrast, December experiences much colder temperatures, ranging from -10°C (14°F) to a maximum of 12°C (54°F), with an average temperature of just 2°C (35°F). Though precipitation levels are similar, with 155 mm (6.1 in) over 19 days and higher humidity of 90%, the overall ambiance is much chillier. For more details, you can check Rapperswil weather in December.
August in Rapperswil stands out as a dynamic month, showcasing a blend of warm temperatures and increased humidity compared to the cooler months. With maximum highs peaking around 32°C, it invites outdoor enthusiasts to enjoy the scenic beauty of the area. However, the humidity averages around 80%, making those sunny days feel quite warm. Frequent rainfall, experienced on about half the days in the month, adds a refreshing twist to the summer atmosphere. For anyone planning a visit or curious about the weather patterns, discovering more about Rapperswil’s climate is essential. Explore further at Rapperswil Climate.