April Weather in Sierre, Switzerland

Last updated: August 27, 2025

In April, Sierre, Switzerland experiences a captivating transition into spring, showcasing a maximum temperature reaching 17°C (63°F) while averaging a cool 3°C (37°F), with chilly nights dipping to a minimum of -17°C (1°F). The month is marked by 81 mm (3.2 in) of precipitation over 11 days, contributing to the lush, vibrant landscapes that define the area. With a humidity level of 84%, expect a refreshing atmosphere that highlights the beauty of Sierre's scenic surroundings during this lively season.

April Temperature in Sierre

In Sierre, Switzerland, April marks a significant shift in temperatures, with the minimum dropping to a more hospitable -17°C (1°F) and a comfortable average reaching 3°C (37°F). As the month progresses, locals and visitors alike can enjoy milder days, with highs peaking at a delightful 17°C (63°F). This represents a notable warming trend compared to the early spring months of March, where temperatures hovered around -2°C (29°F) on average, and the maximum only touched 14°C (57°F). April’s gentle thaw not only heralds the arrival of spring but also invites outdoor enthusiasts to embrace the scenic beauty of the region, transforming Sierre into a vibrant hub for nature lovers. With such a welcoming climate, it’s clear that April stands as a beloved transition month, bridging the chill of winter with the warmth of the approaching summer.

April Weather in Sierre: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sierre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sierre, April 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).
JanFebMarAprMayJunJulAugSepOctNovDec162329374353565649412918
Data source: Temperature data for Sierre 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.

April Precipitation in Sierre

In April, Sierre experiences a notable dip in precipitation, with 81 mm (3.2 in) falling over 11 days. This marks a decline from the wetter months of January through March, where precipitation levels hovered around 135 mm and 122 mm respectively. As spring progresses into May, the region can anticipate a significant increase to 160 mm (6.3 in), indicating a trend towards wetter conditions as the snow melts and plants begin to thrive. This April rainfall, while less than previous months, signals a transitional phase before the more sustained downpours of late spring and summer, suggesting a dynamic weather pattern characteristic of Sierre’s mountainous backdrop.

April Precipitation Trends in Sierre

The chart displays monthly precipitation patterns in Sierre, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Sierre, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec13596122811601301211299013598188
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Sierre

In April, the atmosphere in Sierre, Switzerland, begins to shift as humidity drops to 84%, marking a noticeable departure from the winter months when levels peaked at 91% in January. This gradual decline signifies the transition into spring, as the air becomes lighter and more refreshing after the chilly season. As temperatures rise through the following months, humidity continues to decrease, reaching its lowest point of 77% in August before making a slight recovery in the fall. April’s moderate humidity not only enhances the blooming landscape but also offers a pleasant contrast to the dampness of winter, inviting residents and visitors alike to enjoy the beauty of Sierre's awakening nature.

April Average Humidity in Sierre

This chart illustrates the average monthly humidity levels in Sierre, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Sierre is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sierre

As April unfolds in Sierre, Switzerland, outdoor enthusiasts should take heed of the sharp rise in the UV Index, which reaches an impressive 8, categorizing it as very high. This significant jump from March's UV Index of 7 not only shortens the safe burn time to just 15 minutes, but also highlights the increasing intensity of sunlight as spring progresses. With a steady upward trend observed from the winter months, where the UV Index hovered around 3 to 4, April’s numbers signify an escalation that continues into the following months. As we transition into summer, awareness and protective measures against UV exposure become increasingly crucial. For more detailed information, visit Sierre UV Index.

Maximum UV Index Levels in Sierre for April

The chart shows the monthly maximum UV Index (UVI) for Sierre in April, 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 April, the maximum UV index in Sierre typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec347810111097632
Data source: Sierre April 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.

April Sunshine in Sierre

April in Sierre, Switzerland, is a radiant transition into spring, basking in 355 hours of sunshine—a significant leap from the 303 hours witnessed in March. This increase not only marks the arrival of warmer days but also sets the stage for the sun-drenched months ahead. Following closely, May pushes the threshold even higher with 360 hours, while June shines the brightest at 388 hours. The steady climb from January's muted 176 hours to the vibrant sunshine of late spring reflects a beautiful trend of increasing daylight as the year progresses. As summer approaches, Sierre's residents and visitors alike can look forward to an uplifting ambiance, enriched by the growing sunshine that invigorates the picturesque landscape.

Monthly Sunshine Duration in Sierre: April Highlighted

The April sunshine duration represents the total number of hours Sierre experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec176h234h303h355h360h388h416h383h323h288h232h202h
Data source: Sierre April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sierre During April

April in Sierre, Switzerland, brings a moderate likelihood of sunny weather, with a 44% chance of sunny days. This is a slight dip compared to the brightening skies of March, which enjoys a 45% chance, indicating that while spring is blossoming, it can still be a bit unpredictable. As winter's hold loosens, the chances of sunshine start to wane in the following month of May, dropping to 32%. This trend highlights the transitional nature of April, where as the snow melts and the flowers begin to bloom, residents are greeted with a mix of sunshine and lingering chill. So, while you may encounter some clouds, there’s still a good chance to enjoy the radiant beauty of Sierre this April.

Percentage of Sunny Days in April in Sierre

The chart illustrates the percentage of sunny days in Sierre throughout the year, with April 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 Sierre experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%41%45%44%32%32%35%38%33%44%33%41%
Data source: Sierre April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sierre in April

As spring unfolds in Sierre, Switzerland, April brings a delightful surge in daylight, extending to an impressive 13 hours—a clear sign of nature awakening after winter. This increase marks a notable jump from 11 hours in March, and sets the stage for the summer months ahead. As daylight continues to lengthen through May and June, reaching a peak of 15 hours, the days in Sierre become increasingly vibrant. This transition emphasizes the rhythmic patterns of the year, where longer, sun-filled days inspire outdoor activities and a renewed connection with nature, creating an invigorating atmosphere that captivates both locals and visitors alike.

Average Daylight Hours in Sierre for April

The chart illustrates the variation in daylight duration in Sierre throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 3m10h 20m11h 56m13h 35m14h 59m15h 42m15h 19m14h 4m12h 29m10h 51m9h 24m8h 39m
Data source: Sierre daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Sierre

In April, the gentle April winds in Sierre, Switzerland mirror the fading chill of winter, maintaining a consistent average wind speed of 1.1 m/s (3 mph). This slight breeze, which has remained stable since March, adds a refreshing touch to the burgeoning warmth of spring. As daylight hours increase and nature begins to bloom, these mild winds create a serene atmosphere perfect for leisurely walks among blossoming landscapes. Interestingly, the data shows that while April maintains its calm, the trend seems to persist through the following months, keeping wind speeds consistently low, reflecting a tranquil and temperate climate that many find charming.

Average April Wind Speed in Sierre

The chart displays monthly wind speed patterns in Sierre, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.41.61.11.1 m/s1.11.01.11.11.01.31.41.4
Data source: Sierre April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Sierre Compares to Other Months

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

April and January present distinctly different weather patterns. In April, temperatures range from a chilly minimum of -17°C (1°F) to a pleasant maximum of 17°C (63°F), with an average of 3°C (37°F). The month experiences around 81 mm (3.2 in) of precipitation over about 11 days, accompanied by a relatively high humidity of 84%.

In contrast, January is significantly colder, with temperatures dipping as low as -27°C (-17°F) and peaking at 6°C (44°F), averaging -9°C (16°F). It also sees more precipitation, totaling 135 mm (5.3 in) across 10 days, and higher humidity at 91%. For more details on the weather conditions in January, you can visit Sierre weather in January. Overall, April offers a milder climate as it transitions towards spring, while January is marked by the harshness of winter.

April weather marks a significant shift compared to February's colder conditions. In April, temperatures range from a minimum of -17°C (1°F) to a pleasant average of 3°C (37°F), peaking at a maximum of 17°C (63°F). In contrast, February sees much chillier averages, with temperatures dropping to a minimum of -23°C (-8°F) and only reaching a maximum of 11°C (52°F). Both months experience similar precipitation, with April receiving 81 mm (3.2 in) and February slightly higher at 95 mm (3.8 in), although the number of rainy days remains the same at 11. Humidity is also slightly lower in April at 84%, compared to February's 89%. This transition illustrates the warming trend as winter gives way to spring. For more details on February weather patterns, you can refer to Sierre weather in February.

April's weather marks a significant shift from the chilly conditions of March. With a minimum temperature of -17°C (1°F) compared to March's lower minimum of -25°C (-12°F), April brings a warmer average of 3°C (37°F), up from March’s average of -2°C (29°F). The maximum temperature in April can reach up to 17°C (63°F), which is notably higher than March's peak of 14°C (57°F). However, April experiences slightly less precipitation, totaling 81 mm (3.2 in) over 11 days, while March sees more rain at 122 mm (4.8 in) across 15 days. Humidity remains relatively high in both months, with April at 84% and March at 87%. For more detailed insights, you can check Sierre weather in March.

In April, temperatures range from a minimum of -17°C (1°F) to a maximum of 17°C (63°F), with an average of 3°C (37°F). The month experiences approximately 81 mm (3.2 in) of precipitation over 11 days, and humidity levels are relatively high at 84%. In contrast, May offers slightly warmer temperatures, with a minimum of -16°C (4°F), an average of 6°C (43°F), and a maximum of 22°C (72°F). However, it sees increased precipitation at 160 mm (6.3 in) over 20 days, along with a slightly lower humidity of 80%. For a detailed look at May weather, you can visit Sierre weather in May.

April and June showcase distinct weather patterns, reflecting the transition from early spring to early summer. In April, temperatures range from a chilly minimum of -17°C (1°F) to a mild maximum of 17°C (63°F), with an average of 3°C (37°F). Precipitation is relatively moderate at 81 mm (3.2 in) over 11 days, accompanied by a high humidity level of 84%. In contrast, June brings warmer temperatures with a minimum of -4°C (25°F) and a maximum of 27°C (81°F), averaging 12°C (53°F). While June is wetter, with 130 mm (5.1 in) of rain over 16 days, humidity remains slightly lower at 82%. For those interested in more details about June weather, visit Sierre weather in June.

April and July present contrasting weather patterns, showcasing the transition from chilly spring to warm summer. In April, temperatures range from a minimum of -17°C (1°F) to an average of 3°C (37°F), peaking at 17°C (63°F), accompanied by significant precipitation of 81 mm (3.2 in) over 11 days and high humidity at 84%. In contrast, July enjoys a much milder climate, with temperatures starting at 1°C (34°F) and averaging 14°C (57°F), reaching a maximum of 28°C (82°F). The month experiences more rainfall too, totaling 121 mm (4.8 in) spread over 16 days, but with slightly lower humidity at 82%. For a more detailed look at July's conditions, check out Sierre weather in July.

April and August present distinct weather patterns, reflecting the transition from spring to summer. In April, temperatures range from a chilly minimum of -17°C (1°F) to a mild maximum of 17°C (63°F), with an average around 3°C (37°F). The month is marked by significant precipitation of 81 mm (3.2 in) over 11 days, accompanied by a high humidity level of 84%. In contrast, August boasts warmer temperatures, with a minimum of 1°C (34°F), an average of 13°C (56°F), and a maximum of 26°C (80°F). This month experiences higher precipitation of 129 mm (5.1 in) over 16 days, but with slightly lower humidity at 77%. For a more detailed look at August weather conditions, visit Sierre weather in August.

April and September present a marked contrast in weather conditions. In April, temperatures range from a chilly -17°C (1°F) at their lowest to a mild 17°C (63°F) at their peak, with an average of 3°C (37°F). This month experiences approximately 81 mm (3.2 in) of precipitation over about 11 days, coupled with a high humidity level of 84%. In contrast, September features a more temperate climate, with minimum temperatures of -5°C (23°F) and maximums reaching 22°C (72°F), averaging around 9°C (49°F). Precipitation is slightly higher at 90 mm (3.6 in) over 12 days, and humidity dips slightly to 81%. Overall, while April retains a wintry chill, September ushers in a more stable, autumnal warmth. For more information on September weather specifically, visit Sierre weather in September.

April and October offer distinct weather patterns as spring transitions into autumn. In April, temperatures range from a minimum of -17°C (1°F) to a maximum of 17°C (63°F), with an average of 3°C (37°F). This month experiences approximately 81 mm (3.2 in) of precipitation over about 11 days, accompanied by relatively high humidity at 84%. In contrast, October presents milder temperatures, with a minimum of -6°C (21°F), an average of 5°C (41°F), and a maximum of 18°C (64°F). This month sees increased precipitation of 135 mm (5.3 in) spread over about 13 days, and humidity levels rise slightly to 89%. For more detailed information, you can check Sierre weather in October.

April and November present contrasting weather patterns, reflecting the transition between spring and late autumn. In April, temperatures can range from a chilly -17°C (1°F) at night to a mild 17°C (63°F) during the day, with an average temperature of 3°C (37°F). The month experiences about 81 mm (3.2 in) of precipitation over approximately 11 days, coupled with a humidity level of 84%.

In contrast, November brings colder temperatures, with nighttime lows dropping to -23°C (-10°F) and daytime highs averaging just 14°C (58°F), resulting in an average temperature of -2°C (29°F). This month sees a slight increase in precipitation, totaling 98 mm (3.8 in) over 14 days, and a higher humidity of 89%. For more detailed insights, you can check the link: Sierre weather in November.

When comparing the weather in April and December, one can see stark contrasts in temperature and precipitation. April enjoys a milder temperature range, with minimums around -17°C (1°F) and maximums reaching up to 17°C (63°F), leading to a pleasant average of about 3°C (37°F). In contrast, December experiences much colder conditions, with minimum temperatures plummeting to -30°C (-22°F) and an average of -8°C (18°F). Precipitation is also significantly higher in December, with 188 mm (7.4 in) falling over 16 days, compared to April's 81 mm (3.2 in) across 11 days. Additionally, the humidity is slightly higher in December, at 91%, compared to April's 84%. For a deeper insight into December's conditions, check out Sierre weather in December.

Compare Sierre's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Sierre

As April arrives in Sierre, the weather offers a unique blend of mild temperatures and frequent precipitation, setting it apart from the preceding winter months. With an average temperature hovering around 3°C (37°F), it's a stark transition from the chill of earlier seasons, yet still retains the crispness that signals the end of winter. The increase in rainfall, amounting to 81 mm over 11 days, contributes to the region's stunning spring blooms, while the higher humidity level of 84% creates a fresh and vibrant atmosphere. For more insights into how Sierre's April weather fits into the overall seasonal pattern, visit Sierre Climate.