August Weather in Ascona, Switzerland

Last updated: August 27, 2025

Ascona, Switzerland, enjoys a diverse August, where summer's warmth is marked by a maximum temperature of 28°C (82°F) and an average of 17°C (62°F), providing a pleasant climate for both locals and tourists. However, with a minimum temperature dipping to 7°C (45°F), visitors should be prepared for cooler evenings. The month sees 169 mm (6.6 in) of rainfall spread across 13 days, contributing to a humidity level of 80% that adds a refreshing crispness to the air. Whether you're exploring the scenic lakeside or indulging in local delicacies, Ascona offers a unique blend of warmth and freshness this August.

August Temperature in Ascona

In August, Ascona, Switzerland, basks in delightful summer warmth, with temperatures exhibiting a charming transition from the cooler months. The month opens with a minimum temperature of 7°C (45°F), gradually rising to an inviting maximum of 28°C (82°F). The average hovers around a pleasant 17°C (62°F), making it an ideal time for outdoor activities and exploring the stunning landscapes. Compared to the preceding months of June and July, August maintains this warm trend, though it subtly hints at the approach of autumn with cooler evenings. This climatic comfort, combined with Ascona's breathtaking scenery, ensures that August remains a favorite among visitors seeking to soak in the quintessential beauty of Swiss summers.

August Weather in Ascona: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Ascona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ascona, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec293337445160626255473731
Data source: Temperature data for Ascona generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Ascona

In Ascona, Switzerland, August typically marks a peak in the summer precipitation, with 169 mm (6.6 in) of rain falling over an average of 13 days. This trend highlights a significant increase compared to the preceding months, such as July, which recorded 123 mm (4.9 in) in slightly fewer rainy days. Despite the lingering warmth of summer, the rain in August paves the way for the lush greenery that defines the region. As the beautiful landscapes transition toward autumn, the precipitation levels remain high relative to earlier months, signaling a notable shift in weather patterns that continues into the fall, as evidenced by the substantial 242 mm (9.5 in) expected in October.

August Precipitation Trends in Ascona

The chart displays monthly precipitation patterns in Ascona, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Ascona, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec7156106136176159124169136242168119
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Ascona

In Ascona, Switzerland, August brings a touch of relief with humidity levels dropping to 80%, mirroring the trends seen in May. This summer month stands out as a transition point, where the humid conditions characteristic of the earlier months begin to soften, allowing for more comfortable outdoor activities. Following a peak in January at 92%, humidity gradually eased through the spring and summer, peaking again at 83% in July before this slight dip in August. As the seasons shift towards autumn, humidity levels begin to rise once more, hinting at the more humid months to come in September and October.

August Average Humidity in Ascona

This chart illustrates the average monthly humidity levels in Ascona, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Ascona is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Ascona

In August, Ascona experiences a UV Index of 9, indicating very high exposure levels that require caution. As the summer peaks, the burn time is notably short, just 15 minutes, emphasizing the importance of sun protection during this month. Following a trend of increasing UV levels since April, the intensity slightly decreases from July’s maximum index, yet remains significant. With the days still long and plenty of sunshine, sunseekers should be mindful of potential skin damage. For more detailed insights on UV exposure throughout the year, check out the Ascona UV Index.

Maximum UV Index Levels in Ascona for August

The chart shows the monthly maximum UV Index (UVI) for Ascona in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Ascona typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101097532
Data source: Ascona August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Ascona

As August arrives in Ascona, Switzerland, it basks in the glow of 362 hours of sunshine, marking a delightful peak in the region's summer brilliance. This sunny month follows the breathtaking highs of July, which boasts the most sunlight at 404 hours, and showcases a slight decline as summer nears its end. However, the warmth of August still lingers, offering enticing opportunities for outdoor activities and scenic relaxation. The trend over the year reveals a gradual increase in daylight from January's 174 hours to July’s vibrant peak, followed by a gentle tapering off into autumn, with September's 302 hours signaling the return of cooler, shorter days. As nature begins to transition, August remains a golden gem, inviting visitors to enjoy the last throes of summer in this picturesque Swiss getaway.

Monthly Sunshine Duration in Ascona: August Highlighted

The August sunshine duration represents the total number of hours Ascona experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec174h225h301h330h350h379h404h362h302h265h194h193h
Data source: Ascona August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ascona During August

In August, Ascona, Switzerland enjoys a 50% chance of sunny weather, marking the peak of summer and a delightful transition from the warmer months. This likelihood stands out against a backdrop of fluctuating sunshine throughout the year, with the percentages peaking in the spring months of March (58%) before a gradual decline during the early summer. Interestingly, while June and July exhibit lower probabilities of sun at 33% and 37% respectively, August offers a refreshing boost in sunny days, making it a prime time for outdoor activities and exploration. As summer wanes, the sun's warmth remains a cherished hallmark of August, providing an inviting atmosphere for visitors and locals alike.

Percentage of Sunny Days in August in Ascona

The chart illustrates the percentage of sunny days in Ascona throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ascona experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%40%58%46%38%33%37%50%35%44%40%46%
Data source: Ascona August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ascona in August

As summer winds down, August in Ascona, Switzerland, offers a delightful blend of lingering daylight, with approximately 14 hours of sunlight illuminating the picturesque landscape. Following the peak summer months of June and July, which boast 15 hours of daylight, August marks a gentle transition towards autumn. The gradual decrease in daylight from the vibrant months of summer hints at the approach of cooler seasons, as September prepares to welcome just 12 hours of light. This pattern emphasizes not only the warmth of summer but also the enchanting beauty of change, making August an ideal time to enjoy outdoor activities against the backdrop of a fading golden sun.

Average Daylight Hours in Ascona for August

The chart illustrates the variation in daylight duration in Ascona throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 4m10h 20m11h 56m13h 34m14h 58m15h 41m15h 18m14h 4m12h 29m10h 52m9h 25m8h 40m
Data source: Ascona daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Ascona

In August, Ascona, Switzerland, experiences a gentle breeze with an average wind speed of 1.3 m/s (3 mph), maintaining the mellow conditions typical of the summer months. This slight tranquility is consistent with the wind patterns observed throughout the year, where the first half maintains relatively low speeds, peaking modestly in November and December. As the seasons shift, we see a gradual increase in wind speed, culminating in a brisk 2.0 m/s (5 mph) in December. This trend reflects the transition from calm summer days to the invigorating gusts of winter, highlighting Ascona's unique climatic rhythm that offers both serenity and seasonal dynamism.

Average August Wind Speed in Ascona

The chart displays monthly wind speed patterns in Ascona, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.21.41.31.41.21.31.3 m/s1.21.41.62.0
Data source: Ascona August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Ascona Compares to Other Months

Weather in Ascona varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Ascona, focusing on differences in temperature, rainfall, humidity, and UV levels.

August and January in Ascona present a stark contrast in weather, highlighting the region's seasonal variability. In August, temperatures range from a cool 7°C (45°F) to a warm 28°C (82°F), with an average of 17°C (62°F). This month experiences 169 mm (6.6 in) of precipitation over about 13 days, coupled with a humidity level of 80%. In contrast, January brings much colder weather, with temperatures dipping as low as -16°C (4°F) and peaking at a mild 9°C (49°F), averaging at -2°C (29°F). Snow and rain together account for 71 mm (2.8 in) of precipitation over approximately 10 days, while humidity is slightly higher at 92%. For a closer look at January's conditions, you can visit Ascona weather in January.

August and February present markedly different weather conditions. In August, temperatures range from a chilly 7°C (45°F) at night to a warm 28°C (82°F) during the day, with an average of 17°C (62°F). While the month experiences considerable precipitation, totaling 169 mm (6.6 in) over 13 days, humidity levels hover around 80%, contributing to a warm and sometimes muggy atmosphere. In contrast, February is significantly colder, with temperatures dropping to as low as -17°C (2°F) and averaging just 1°C (34°F). The maximum temperature reaches 17°C (63°F), yet this month sees much less precipitation, only 56 mm (2.2 in) over 11 days, though humidity is slightly higher at 89%. To explore further details about February weather, you can check Ascona weather in February.

When comparing the weather in August and March, it's clear there are significant differences. August boasts a milder climate with temperatures ranging from a chilly 7°C (45°F) at night to a pleasant average of 17°C (62°F) and a peak of 28°C (82°F), accompanied by high humidity levels at 80%. In contrast, March presents a colder scenario, with night temperatures plunging to -17°C (3°F) and an average of just 3°C (37°F), though it can reach a maximum of 18°C (64°F) during warmer days. Precipitation is substantial in both months, with August receiving 169 mm (6.6 in) over 13 days and March experiencing 106 mm (4.2 in) over 12 days. For more detailed insights, you can check out Ascona weather in March.

When comparing the weather in April and August, notable differences emerge. April tends to be much cooler with minimum temperatures dipping to -6°C (21°F) and an average of just 7°C (44°F), whereas August enjoys milder conditions with a minimum of 7°C (45°F) and an average of 17°C (62°F). August also boasts maximum temperatures reaching up to 28°C (82°F), contrasted with April's maximum of 20°C (68°F). In terms of precipitation, August sees more rainfall (169 mm or 6.6 in over 13 days) compared to April's 136 mm (5.3 in over 10 days), although the humidity levels are quite similar, with August at 80% and April at 84%. For more detailed insights into the weather conditions, you can check Ascona weather in April.

In comparing the weather of August and May, we find distinct differences in temperature and precipitation patterns. August tends to be warmer, with average temperatures hovering around 17°C (62°F) and maximums reaching up to 28°C (82°F), while May averages a cooler 11°C (51°F) and peaks at 25°C (77°F). Both months experience significant rainfall, with August recording 169 mm (6.6 in) over approximately 13 days and May slightly higher at 176 mm (6.9 in) across 19 days. Interestingly, humidity levels remain constant at 80% for both months, contributing to a similar feeling of mugginess. For a closer look at the weather in May, you can explore more here: Ascona weather in May.

In comparing the weather between June and August, June tends to have slightly cooler temperatures, with minimums around 5°C (41°F) and maximums reaching up to 34°C (93°F). In contrast, August features a more moderate temperature range, with minimums of 7°C (45°F) and maximums of 28°C (82°F). Both months experience similar precipitation, with August slightly higher at 169 mm (6.6 in) over 13 days compared to June’s 159 mm (6.3 in) over 18 days. Humidity levels are fairly consistent, with June having an 82% humidity and August at 80%. For a detailed look at June weather, check out Ascona weather in June.

In comparing the weather patterns of July and August, we see that both months have quite similar average temperatures, with August slightly warmer and reaching a maximum of 28°C (82°F) compared to July's 27°C (80°F). However, August experiences more precipitation, totaling 169 mm (6.6 in) over 13 days, which is notably higher than July’s 123 mm (4.9 in) over 18 days. Additionally, humidity levels in July are marginally higher at 83%, while August holds steady at 80%. For a detailed look at July weather specifics, you can refer to Ascona weather in July.

August typically showcases warmer temperatures, with a minimum of 7°C (45°F) and maximum reaching up to 28°C (82°F), averaging around 17°C (62°F). However, it also experiences considerable humidity at 80% and significant rainfall, totaling 169 mm (6.6 in) over 13 days. In contrast, September sees a notable cooling trend, with temperatures dropping to a minimum of -1°C (31°F) and a maximum of 23°C (74°F), while the average settles at 13°C (55°F). Although September has slightly less rainfall at 136 mm (5.4 in) across 14 days, it maintains a slightly higher humidity level of 83%. For a more detailed look at the weather in September, check out Ascona weather in September.

August and October exhibit notable differences in weather patterns. In August, temperatures range from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), providing warm and generally pleasant conditions with an average of 17°C (62°F). The month experiences around 169 mm (6.6 in) of precipitation over 13 days, coupled with a humidity level of 80%. In contrast, October sees cooler temperatures, with minimums dropping to -1°C (30°F) and averages around 8°C (47°F), while the maximum can reach 21°C (69°F). Precipitation increases significantly to 242 mm (9.5 in) across approximately 12 days, along with a rise in humidity to 90%. These changes indicate a transition from the warm, humid days of summer to the chillier, wetter conditions of autumn. For more specifics about the weather during this month, you can check Ascona weather in October.

August and November present quite distinct weather characteristics. August typically enjoys milder temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 28°C (82°F), with an average temperature of 17°C (62°F). The month experiences significant rainfall, accumulating 169 mm (6.6 in) over about 13 days, alongside a high humidity level of 80%.

In contrast, November brings chillier conditions, with temperatures dipping to a minimum of -9°C (16°F), averaging around 3°C (38°F), and peaking at 15°C (59°F). Precipitation remains similar at 168 mm (6.6 in) over the same number of rainy days (13), but the humidity rises slightly to 88%. For more detailed insights on November weather, you can visit Ascona weather in November. Overall, while August feels warmer and more humid, November introduces a colder, crisper climate.

August and December present stark contrasts in weather. In August, temperatures range from a pleasant minimum of 7°C (45°F) to a warm maximum of 28°C (82°F), with an average of 17°C (62°F). The month is characterized by higher humidity at 80% and more precipitation, totaling 169 mm (6.6 in) across 13 days. In contrast, December experiences much colder temperatures, with a minimum of -13°C (10°F) and a maximum of 9°C (49°F), averaging around -1°C (31°F). While precipitation is lower at 119 mm (4.7 in) over 12 days, the humidity is slightly higher at 90%. For more details about the December weather in this region, check out Ascona weather in December.

Compare Ascona's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Ascona

August in Ascona is a delightful blend of warmth and humidity, making it a vibrant month for visitors. With temperatures reaching a pleasant peak of 28°C (82°F), the warmth encourages outdoor activities, yet the average of 17°C (62°F) ensures cooler moments in the evenings. While August sees more rainfall than other summer months, with about 169 mm spread over 13 days, the lush landscapes that emerge are well worth it. This combination of mild temperatures and occasional showers creates a unique charm that sets August apart from the drier and hotter days of July, making it an ideal time for those seeking a balance of sun and serenity. For a deeper understanding of what to expect, check out Ascona Climate.