May Weather in Unterseen, Switzerland

Last updated: August 27, 2025

Experience the captivating May weather of Unterseen, Switzerland, where temperatures gracefully fluctuate from a maximum of 25°C (78°F) to a minimum of -7°C (20°F), with an invigorating average of 9°C (48°F). Visitors can expect 182 mm (7.2 in) of precipitation over 19 days, contributing to the lush scenery that defines this Alpine gem. With humidity levels around 80%, the air feels refreshing and crisp, making it an ideal time to explore nature and the breathtaking landscapes of the region.

May Temperature in Unterseen

May in Unterseen, Switzerland, heralds the arrival of spring with more temperate conditions, showcasing noticeable warmth as the month unfolds. With minimum temperatures rising to a mild -7°C (20°F) and an average around 9°C (48°F), the chill of winter begins to fade. Daytime highs can reach a pleasant 25°C (78°F), inviting locals and travelers alike to embrace the outdoors. This month serves as a transitional period; as the landscape awakens, the range of temperatures illustrates a trend towards warmer weather, setting the stage for the balmy summer months ahead. The overall increase in warmth and sunshine makes May an ideal time to explore the scenic beauty and vibrant culture of this charming Alpine town.

May Weather in Unterseen: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Unterseen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unterseen, May 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).
JanFebMarAprMayJunJulAugSepOctNovDec263035414857605953453529
Data source: Temperature data for Unterseen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Unterseen

May in Unterseen, Switzerland, is marked by a significant uptick in precipitation, with 182 mm (7.2 in) of rainfall, making it the wettest month so far this year. This is a sharp increase from April’s more modest 94 mm (3.7 in), reflecting a shift towards a wetter late spring. Interestingly, May also experiences the highest number of precipitation days, totaling 19 days, which likely contributes to the lush greenery the region is known for during this time. As the month transitions into summer, the pattern of persistent rainfall sets the stage for the even heavier downpours recorded in June, where totals reach 225 mm (8.9 in). Overall, May’s rainfall not only restores moisture but also prepares the landscape for the warmer months ahead.

May Precipitation Trends in Unterseen

The chart displays monthly precipitation patterns in Unterseen, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Unterseen, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1231031259418222521920312413897175
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Unterseen

In Unterseen, Switzerland, May marks a notable shift in humidity levels, with the average dropping to 80%. This decline indicates the transition from the winter months, where humidity peaks at 92% in January, gradually giving way to the milder conditions of late spring. Following the steady decrease from 92% in January to 84% in April, May's level suggests an easing of the dampness that characterizes the earlier months. Interestingly, June and August mirror May's humidity, both maintaining the 80% mark, hinting at a consistent comfort during the summer. Overall, the data reveals a gradual trend towards drier air as spring unfolds, contributing to a fresh and pleasant atmosphere as the landscape begins to bloom.

May Average Humidity in Unterseen

This chart illustrates the average monthly humidity levels in Unterseen, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Unterseen 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Unterseen

In May, Unterseen experiences a significant increase in the UV Index, reaching a notable 9, which falls into the very high exposure category. This surge indicates a greater risk for skin damage, requiring a much shorter burn time of just 15 minutes. In contrast to the earlier months—where the UV Index ranged from a low of 2 in January to a moderate 4 in February—May marks a clear shift toward the summer season's intensity. As we explore the warmer months ahead, it's essential to stay vigilant about sun protection. For more insights on the UV trends in Unterseen, check out Unterseen UV Index.

Maximum UV Index Levels in Unterseen for May

The chart shows the monthly maximum UV Index (UVI) for Unterseen in May, 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 May, the maximum UV index in Unterseen typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Unterseen May 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.

May Sunshine in Unterseen

May shines brightly in Unterseen, Switzerland, with 361 hours of sunshine, marking a delightful peak in brightness as spring transitions into summer. This month shows a steady increase from April's 356 hours, illustrating a clear upward trend in solar exposure as the year progresses. Following May, the sun continues to make its presence felt, reaching an impressive 386 hours in June and peaking at 416 hours in July. As the seasons change, Unterseen relishes an abundance of sunlight, making May a vibrant month where nature comes to life, and outdoor activities flourish under the warm, embracing rays of the sun.

Monthly Sunshine Duration in Unterseen: May Highlighted

The May sunshine duration represents the total number of hours Unterseen experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec169h229h299h356h361h386h416h384h322h285h230h195h
Data source: Unterseen May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Unterseen During May

May in Unterseen, Switzerland offers a mixed bag when it comes to sunny weather, boasting a 31% chance of sunshine. This figure reflects a slight dip from the sunny peaks of April and March, which hover around 48% and 44%, respectively. As spring transitions into summer, the chances of sun begin to plateau, closely aligning with the 33% odds seen in both June and July. This trend suggests that while May remains a pleasant month with increasing daylight, it may not be the sunniest time to visit. Therefore, travelers should prepare for both sunny spells and the occasional cloud, making the most of the unpredictable but charming Swiss weather.

Percentage of Sunny Days in May in Unterseen

The chart illustrates the percentage of sunny days in Unterseen throughout the year, with May 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 Unterseen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%39%44%48%31%33%34%38%38%43%35%41%
Data source: Unterseen May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Unterseen in May

May in Unterseen, Switzerland, brings a delightful increase in daylight duration, with the sun gracing the sky for approximately 15 hours each day. This month is a significant turning point, as the daylight hours extend dramatically from 13 hours in April. The trend showcases the vibrant transition from the shorter days of winter, where January sees only 9 hours of daylight, to the long, luminous days of summer peaking in June and July. As spring embraces the region, May not only offers longer days but also a sense of rejuvenation, inviting residents and visitors alike to enjoy the breathtaking landscapes under the sun's extended glow. With daylight gradually tapering off again in August and beyond, May stands out as an exhilarating celebration of light and warmth.

Average Daylight Hours in Unterseen for May

The chart illustrates the variation in daylight duration in Unterseen throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h10h 18m11h 56m13h 36m15h 2m15h 46m15h 22m14h 6m12h 30m10h 50m9h 22m8h 36m
Data source: Unterseen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Unterseen

In Unterseen, Switzerland, the average wind speeds in May remain consistent with the early spring months, measuring at 1.6 m/s (4 mph). This gentle breeze ushers in a sense of calm, making it an ideal time for leisurely strolls amidst the blooming landscapes. Throughout the year, a subtle trend emerges, with wind speeds fluctuating slightly but maintaining a generally calm demeanor, ranging from 1.3 m/s to 1.7 m/s in the months surrounding May. The transition from late winter to early summer is marked by this stability, hinting at the serene and pleasant outdoor experiences that await both locals and visitors alike.

Average May Wind Speed in Unterseen

The chart displays monthly wind speed patterns in Unterseen, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.71.51.51.6 m/s1.31.41.31.31.51.51.7
Data source: Unterseen May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Unterseen Compares to Other Months

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

May and January present stark contrasts in weather conditions. In May, temperatures range from a minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (48°F). The month typically experiences considerable precipitation, totaling 182 mm (7.2 in) over about 19 days, accompanied by a humidity level of 80%. In contrast, January is much colder, with temperatures dipping as low as -19°C (-1°F) and only reaching a maximum of 9°C (48°F). The average temperature sits at -3°C (26°F), and while it has less precipitation than May at 123 mm (4.9 in) over 12 days, humidity is higher at 92%, contributing to a chillier atmosphere. For more details on January weather, you can check Unterseen weather in January.

Comparing the weather in May and February reveals significant differences in temperature and precipitation patterns. May experiences a wider temperature range, with minimums around -7°C (20°F) and maximums reaching up to 25°C (78°F), resulting in an average of 9°C (48°F). In contrast, February's temperatures are much colder, with average lows of -18°C (-1°F) and highs up to 14°C (58°F), leading to a frigid average of -1°C (31°F). Additionally, May sees more rainfall, with 182 mm (7.2 in) over 19 days, while February has less precipitation at 103 mm (4.0 in) occurring over just 11 days. Notably, February tends to have higher humidity at 89%, compared to 80% in May. For a detailed look at February weather, visit Unterseen weather in February.

When comparing the weather in May and March, it's evident that May experiences a significant warming trend, with temperatures ranging from a minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F) and an average of 9°C (48°F). In contrast, March is much colder, with temperature fluctuations between a low of -23°C (-9°F) and a high of 16°C (60°F) and an average of only 2°C (36°F). While May sees more precipitation, accumulating 182 mm (7.2 in) over 19 days, March has less with 125 mm (4.9 in) across 15 days, though it does have higher humidity at 87% compared to May's 80%. For a detailed look at March weather in a specific location, you can refer to Unterseen weather in March.

In comparing the weather between April and May, we observe a notable increase in temperature and precipitation. April features a cooler climate with minimum temperatures dropping to -12°C (10°F) and an average temperature of 5°C (42°F), reaching a maximum of 19°C (67°F). In contrast, May sees more variability, with minimum temperatures at -7°C (20°F) and an average of 9°C (48°F), peaking at 25°C (78°F). While April has less precipitation at 94 mm (3.7 in) over 12 days, May experiences significantly higher levels, totaling 182 mm (7.2 in) across 19 days. April tends to be slightly more humid at 84%, compared to May's 80%. For more detailed information about April's weather, you can visit Unterseen weather in April.

May and June present a noticeable transition in weather patterns. In May, temperatures range from a chilly minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F), with an average of 9°C (48°F). The month experiences significant precipitation at 182 mm (7.2 in) over 19 days, accompanied by relatively high humidity at 80%. In contrast, June brings warmer temperatures, with a minimum of 1°C (34°F) and a maximum of 29°C (85°F), resulting in an average of 14°C (57°F). Precipitation increases to 225 mm (8.9 in) over 18 days, and humidity rises slightly to 82%. For more detailed weather insights, you can check Unterseen weather in June.

May and July present contrasting weather patterns. In May, temperatures range from a chilly minimum of -7°C (20°F) to a comfortable maximum of 25°C (78°F), averaging around 9°C (48°F). This month experiences significant precipitation, totaling 182 mm (7.2 in) over 19 days, accompanied by a humidity level of 80%. In contrast, July typically has a milder minimum temperature of 5°C (41°F) and can reach up to 29°C (84°F), with an average of 15°C (60°F). Although July sees slightly more rainfall at 219 mm (8.6 in) across 18 days, the humidity increases marginally to 83%. For more details on July weather, you can visit Unterseen weather in July.

May and August present contrasting yet comparably humid weather patterns. In May, temperatures range from a chilly -7°C (20°F) at their lowest to a pleasant 25°C (78°F) at the highest, averaging around 9°C (48°F). The month experiences significant precipitation, with 182 mm (7.2 in) falling over 19 days, maintaining a consistent humidity level of 80%. In contrast, August sees milder temperatures, with a minimum of 5°C (41°F) and a maximum of 28°C (82°F), averaging 15°C (59°F). The precipitation slightly increases to 203 mm (8.0 in) over 18 days, yet the humidity remains the same at 80%. For more detailed weather insights, visit Unterseen weather in August.

May and September present quite different weather patterns, reflecting the transition from spring to autumn. In May, temperatures range from a chilly minimum of -7°C (20°F) to a warm maximum of 25°C (78°F), with an average of 9°C (48°F). The month experiences significant precipitation, totaling 182 mm (7.2 in) over about 19 days, and a humidity level of 80%. In contrast, September sees a milder temperature range, with a minimum of 0°C (32°F) and a maximum of 23°C (73°F), averaging 11°C (53°F). Rainfall is lower in September, with 124 mm (4.9 in) spread over 14 days, and humidity slightly higher at 83%. For more detailed weather insights, you can check Unterseen weather in September.

May and October exhibit distinct weather patterns characterized by variations in temperature, precipitation, and humidity. In May, temperatures can range from a chilly minimum of -7°C (20°F) to a pleasant maximum of 25°C (78°F), averaging around 9°C (48°F). The month experiences significant rainfall, totaling 182 mm (7.2 in) over 19 days, while humidity levels hover around 80%.

Conversely, October features slightly milder temperatures with a minimum of -4°C (26°F) and a maximum of 19°C (67°F), averaging 7°C (45°F). Precipitation is lower than in May, totaling 138 mm (5.4 in) across 13 days, yet the humidity is higher at 90%. For more details on the weather in October, you can check out Unterseen weather in October.

May and November showcase contrasting weather patterns, reflecting the transition from spring to winter. In May, temperatures range from a minimum of -7°C (20°F) to a pleasant average of 9°C (48°F), peaking at 25°C (78°F), while precipitation is relatively high at 182 mm (7.2 in) over 19 days, coupled with an 80% humidity level. In contrast, November experiences cooler temperatures, with a minimum of -10°C (13°F), an average of 2°C (35°F), and a maximum of 18°C (64°F). Precipitation decreases to 97 mm (3.8 in) across 13 days, but the humidity rises slightly to 88%. For a closer look at the weather conditions in November, visit Unterseen weather in November.

May and December showcase contrasting weather patterns, reflecting the transition from spring to winter. In May, temperatures can vary significantly, with a minimum of -7°C (20°F) and a pleasant average of 9°C (48°F), peaking at a warm 25°C (78°F). The month experiences considerable rainfall, with 182 mm (7.2 in) of precipitation over 19 days, accompanied by a relatively high humidity of 80%. In contrast, December is much colder, featuring a minimum temperature of -13°C (8°F), an average of -2°C (29°F), and a maximum of only 9°C (49°F). Precipitation remains similar to May at 175 mm (6.9 in) over 17 days, but the humidity increases to 90%, creating a damp and chilly atmosphere. For more details on December weather, you can visit Unterseen weather in December.

Compare Unterseen's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Unterseen

As May arrives in Unterseen, the weather transforms into a refreshing prelude to summer, displaying a delightful mix of mild temperatures and blooming landscapes. While minimum temperatures still flirt with the chill of winter, the average warms up significantly, inviting outdoor activities. However, May is also characterized by its higher precipitation, as rain graces the area on nearly two-thirds of the days, contributing to the lush scenery. This month stands in contrast to the steadiness of cooler spring months, as the humidity rises, creating an atmosphere that feels both vibrant and rejuvenating. For a deeper look at Unterseen's weather patterns throughout the year, visit Unterseen Climate.