April Weather in Rheinfelden, Switzerland

Last updated: August 27, 2025

April in Rheinfelden, Switzerland, showcases a dynamic range of temperatures, with highs reaching 26°C (80°F) and lows dipping down to -4°C (26°F), resulting in an average of 10°C (50°F). As spring unfolds, residents and visitors can expect a moderate amount of precipitation, totaling 59 mm (2.3 in) over approximately 10 days, contributing to the lush landscape. With relative humidity at a notable 84%, the atmosphere feels fresh and invigorating, making this month ideal for outdoor activities while donning layers to accommodate the fluctuating weather.

April Temperature in Rheinfelden

In April, Rheinfelden, Switzerland begins to shed its winter chill, welcoming a marked shift in temperatures. With a minimum of -4°C (26°F) and an average soaring to 10°C (50°F), the month hints at the blossoming warmth of spring. The maximum temperature can reach a pleasant 26°C (80°F), encouraging locals and visitors alike to embrace outdoor activities and enjoy the vibrant scenery. Compared to the colder, grimmer months of January through March, April represents a significant warming trend, symbolizing a time of renewal and the gradual arrival of sunnier days ahead. The city's landscapes come alive as nature awakens, making it an enchanting time to experience Rheinfelden's charm.

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

The chart illustrates April temperature patterns in Rheinfelden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rheinfelden, 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).
JanFebMarAprMayJunJulAugSepOctNovDec353943505766686860514138
Data source: Temperature data for Rheinfelden 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 Rheinfelden

In April, Rheinfelden experiences a noticeable dip in precipitation, with only 59 mm (2.3 in) falling over 10 days. This marks a significant decrease compared to the wetter months preceding it, such as March, which recorded 87 mm (3.4 in) over 14 days. As spring unfolds, the transition is evident, leading into the typically much wetter May, expected to deliver 126 mm (5.0 in) of rainfall over 17 days. The trend suggests that while April provides a brief respite from the heavier showers, it sets the stage for the lush growth of late spring.

April Precipitation Trends in Rheinfelden

The chart displays monthly precipitation patterns in Rheinfelden, 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 Rheinfelden, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec89758759126120122115699073124
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Rheinfelden

In April, Rheinfelden, Switzerland, experiences a noticeable dip in humidity, with levels at 84%—a decline from the 87% recorded in March. This trend marks the transition into spring, as humidity steadily decreases from the winter months, where it peaks at a high of 92% in January. Following April, the humidity continues to drop to 80% in May, suggesting a trend towards drier conditions as the warmer months approach. This gradual reduction in humidity not only signals the onset of milder weather but also reflects the typical seasonal shift in this charming Swiss town, inviting residents and visitors alike to enjoy the increasingly pleasant spring air.

April Average Humidity in Rheinfelden

This chart illustrates the average monthly humidity levels in Rheinfelden, 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 Rheinfelden 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Rheinfelden

As spring unfolds in Rheinfelden, Switzerland, the UV Index sees a notable increase, reflecting the return of stronger sunlight. In April, the UV Index rises to 6, categorized as high, which significantly reduces safe exposure time to just 25 minutes—a shift from the milder conditions earlier in the year. This trend signals that as we move into warmer months, protecting your skin becomes increasingly essential. May and June follow suit with even higher indices of 8 and 9, indicating that outdoor enthusiasts should be vigilant about sun protection. The awareness of these changing conditions is vital for enjoying the sunny days ahead responsibly. For more detailed information, check out the full Rheinfelden UV Index.

Maximum UV Index Levels in Rheinfelden for April

The chart shows the monthly maximum UV Index (UVI) for Rheinfelden 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 Rheinfelden typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Rheinfelden 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 Rheinfelden

April marks a vibrant turning point in Rheinfelden, Switzerland, where the sunshine begins to shine with renewed vigor. After a relatively muted start to the year, the increase in sunshine hours is clearly noticeable, with April boasting an impressive 353 hours of sunlight—an invigorating leap from March's 283 hours. This trend continues into May and June, as the days grow longer and brighter, peaking in July with 413 hours of glorious sunshine. The steady upward trajectory not only enhances the natural beauty of the region but also signals the arrival of warmer days, inviting locals and visitors alike to revel in the delightful outdoor experiences that Rheinfelden has to offer. As spring unfolds into summer, the sunshine hours reflect a promise of joyous moments spent basking in nature's embrace.

Monthly Sunshine Duration in Rheinfelden: April Highlighted

The April sunshine duration represents the total number of hours Rheinfelden 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.
JanFebMarAprMayJunJulAugSepOctNovDec136h211h283h353h361h389h413h381h323h265h192h156h
Data source: Rheinfelden April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rheinfelden During April

In Rheinfelden, Switzerland, April marks a delightful turning point in sunny weather, boasting a 51% chance of sunshine that surpasses the previous months. As winter recedes, the likelihood of clear skies gradually rises, starting from a mere 17% in January and climbing steadily to 47% in March. This increase signifies not only the arrival of spring but also the gradual warming of the atmosphere. Interestingly, while sunny days continue to fluctuate in the subsequent months, with May dipping to 33% and June further to 32%, April stands out as a beacon of optimism for sun-seekers looking to embrace the emerging warmth and vibrant springtime scenery.

Percentage of Sunny Days in April in Rheinfelden

The chart illustrates the percentage of sunny days in Rheinfelden 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 Rheinfelden experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%38%47%51%33%32%38%40%43%37%23%26%
Data source: Rheinfelden April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rheinfelden in April

In April, Rheinfelden, Switzerland enjoys a significant increase in daylight, basking in 13 hours of sunlight as spring unfolds. This upward trend in daylight duration reflects a gradual transition from the shorter, darker winter months, where January offers only 8 hours, to the more illuminating days of April. As the year progresses, daylight reaches its peak in May and June, maintaining 15 hours of brightness. The consistency of these longer days not only revitalizes the landscape but also invites residents and visitors alike to embrace outdoor activities and the warmth of the season. By observing this pattern, one can truly appreciate how daylight significantly enhances the charm of Rheinfelden through the months.

Average Daylight Hours in Rheinfelden for April

The chart illustrates the variation in daylight duration in Rheinfelden throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 54m10h 15m11h 56m13h 39m15h 8m15h 53m15h 29m14h 10m12h 30m10h 48m9h 17m8h 29m
Data source: Rheinfelden daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Rheinfelden

In April, Rheinfelden experiences a gentle breath of wind, with an average speed of 2.3 m/s (5 mph), perfectly in line with the preceding months of February and March. This consistent breeze creates a subtle transition from the winter chill to the warmer embrace of spring. Interestingly, as warmer days approach in May, the wind picks up slightly to 2.7 m/s (6 mph), hinting at the invigorating energy of the season ahead. The overall trend reveals a moderate yet stable wind pattern during this time of year, setting the stage for a refreshing and vibrant spring in this beautiful Swiss locale.

Average April Wind Speed in Rheinfelden

The chart displays monthly wind speed patterns in Rheinfelden, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.32.32.3 m/s2.71.71.91.91.61.92.02.5
Data source: Rheinfelden April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Rheinfelden Compares to Other Months

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

April and January present distinctly different weather patterns. In April, temperatures typically range from a chilly minimum of -4°C (26°F) to a pleasant maximum of 26°C (80°F), with an average temperature of around 10°C (50°F). The month sees around 59 mm (2.3 in) of precipitation over approximately 10 days, accompanied by a relatively high humidity level of 84%. In contrast, January is much colder, with temperatures varying from a frigid minimum of -13°C (8°F) to a maximum of 17°C (62°F) and an average temperature of just 1°C (35°F). It experiences more precipitation at 89 mm (3.5 in) spread across about 12 days, and humidity peaks at 92%. For a closer look at January weather, you can check out Rheinfelden weather in January.

In comparing the weather of April and February, we can observe notable differences in both temperature and precipitation patterns. April boasts a wider temperature range, with minimal temperatures around -4°C (26°F) and maximums reaching up to 26°C (80°F), leading to an average of 10°C (50°F). In contrast, February experiences lower temperatures overall, with a minimum of -13°C (9°F) and an average of only 4°C (39°F), peaking at 19°C (66°F). Precipitation is higher in February, reaching 75 mm (2.9 in) over 12 days, compared to April’s 59 mm (2.3 in) spread over 10 days. Additionally, humidity remains elevated in both months, with February slightly higher at 89% compared to April's 84%. For those wanting more details on February’s climate, visit Rheinfelden weather in February.

April generally experiences milder temperatures compared to March, with minimum temperatures rising from -12°C (10°F) in March to -4°C (26°F) in April. The average temperature in April reaches 10°C (50°F), compared to 6°C (44°F) in March, and the maximum temperature can climb to 26°C (80°F), showing a significant warming trend. While precipitation decreases slightly in April to 59 mm (2.3 in) over 10 days, March has higher rainfall at 87 mm (3.4 in) spread over 14 days. Humidity is slightly lower in April at 84%, compared to March's 87%. For more details on March's weather, you can check Rheinfelden weather in March.

In comparing the weather between April and May, we can observe a noticeable increase in temperatures as the seasons shift. April's temperatures range from a chilly minimum of -4°C (26°F) to an average of 10°C (50°F), peaking at 26°C (80°F). In contrast, May sees a warmer range, with minimum temperatures of 1°C (33°F), an average of 14°C (57°F), and maximums reaching 31°C (87°F).

Additionally, May experiences significantly higher precipitation, accumulating 126 mm (5.0 in) over 17 days, compared to April's 59 mm (2.3 in) over just 10 days. Interestingly, while May is wetter, it is also slightly less humid at 80%, compared to April's humidity of 84%. For more detailed insights, you can check the Rheinfelden weather in May.

April and June exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of -4°C (26°F) to a pleasant maximum of 26°C (80°F), with an average temperature of 10°C (50°F). The month experiences about 59 mm (2.3 in) of precipitation over approximately 10 days, while humidity is relatively high at 84%. In contrast, June sees warmer temperatures, with a minimum of 6°C (43°F) and a maximum soaring to 34°C (94°F), resulting in an average of 19°C (66°F). Rainfall increases to 120 mm (4.7 in) over 16 days, coupled with a slight decrease in humidity to 82%. For more detailed information, you can check out Rheinfelden weather in June.

April and July present quite contrasting weather conditions. In April, temperatures range from a chilly minimum of -4°C (26°F) to a pleasant average of 10°C (50°F), with a maximum reaching 26°C (80°F). The month also sees precipitation of 59 mm (2.3 in) over approximately 10 days, accompanied by relatively high humidity at 84%. In contrast, July's temperatures are significantly warmer, with a minimum of 9°C (49°F), an average of 20°C (69°F), and maximums soaring up to 36°C (98°F). However, July experiences more substantial rainfall, totaling 122 mm (4.8 in) across about 15 days, while humidity remains slightly lower at 83%. For a closer look at what July has to offer, check out Rheinfelden 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 -4°C (26°F) to a comfortable maximum of 26°C (80°F), with an average temperature of 10°C (50°F). The month also experiences around 59 mm (2.3 in) of precipitation over approximately 10 days, contributing to a higher humidity level of 84%.

In contrast, August offers significantly warmer conditions, with minimum temperatures starting at 7°C (44°F) and soaring to a maximum of 34°C (94°F), leading to an average temperature of 20°C (68°F). Precipitation increases to 115 mm (4.5 in) over 15 days, while humidity remains relatively lower at 80%. This shift highlights the warmer and more humid environment typical of late summer. For more specifics on August conditions, visit Rheinfelden weather in August.

April and September offer distinct weather experiences as the seasons transition. In April, temperatures range from a minimum of -4°C (26°F) to an average of 10°C (50°F) and a maximum of 26°C (80°F), marking the onset of spring with its cool air. The month typically sees around 59 mm (2.3 in) of precipitation spread over 10 days, along with a high humidity level of 84%. On the other hand, September showcases a warmer climate with temperatures ranging from a minimum of 2°C (36°F) to an average of 16°C (61°F) and peaking at 30°C (86°F). This month tends to be slightly wetter, receiving about 69 mm (2.7 in) of rain over 12 days, while maintaining a similar humidity of 83%. To explore more about September weather in Rheinfelden, visit Rheinfelden weather in September.

April and October present distinct weather patterns, reflecting the transition from spring to autumn. In April, temperatures range from a chilly minimum of -4°C (26°F) to an average of 10°C (50°F) and can peak at 26°C (80°F). The month sees about 59 mm (2.3 in) of precipitation over 10 days, with humidity levels averaging 84%. In contrast, October offers slightly milder temperatures, with a minimum of -1°C (30°F), an average of 11°C (52°F), and a maximum of 24°C (75°F). However, it experiences higher rainfall, totaling 89 mm (3.5 in) across 13 days, and humidity climbs to 90%. For more detailed information about October weather, you can visit Rheinfelden weather in October.

April and November showcase distinct weather patterns despite having similar minimum temperatures of -4°C (26°F). In April, the average temperature peaks at a pleasant 10°C (50°F) with highs reaching 26°C (80°F), while November sees a cooler average of 5°C (42°F) and a maximum of 21°C (70°F). April experiences a total precipitation of 59 mm (2.3 in) over about 10 days, compared to November's slightly higher rainfall of 73 mm (2.9 in) spread over 12 days. The humidity levels also reflect the changing seasons, with April at 84% and November rising to 88%. For more insights on the November weather, visit Rheinfelden weather in November.

April and December present quite different weather experiences. In April, temperatures range from a chilly -4°C (26°F) at night to a pleasant average of 10°C (50°F) during the day, peaking at 26°C (80°F). This month sees relatively moderate rainfall of 59 mm (2.3 in) over about 10 days and a humidity level of 84%. In contrast, December brings colder conditions, with temperatures dipping to -5°C (24°F) at night and averaging just 3°C (38°F) during the day, with a maximum of 14°C (58°F). Precipitation is significantly higher in December, totaling 124 mm (4.9 in) over 18 days, along with a higher humidity of 90%. For a detailed look at December weather, you can check Rheinfelden weather in December.

Compare Rheinfelden's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Rheinfelden

April in Rheinfelden ushers in a refreshing transition from the chill of winter to the mild embrace of spring. With an average temperature that significantly warms up compared to the preceding months, this time of year brings a delightful mix of sunny days and occasional rain, as evidenced by its notable precipitation totals. While the humidity remains high, offering a vibrant atmosphere, the sporadic warmth of the season stands in contrast to the cooler grip of March. As nature comes to life, April sets the stage for the beauty of springtime in Rheinfelden, inviting both locals and visitors to explore the blossoming surroundings. For a deeper dive into what to expect year-round, visit Rheinfelden Climate.