April Weather in Trondheim, Norway

Last updated: August 27, 2025

In Trondheim, Norway, April unveils a varied climate, where temperatures span from a brisk -12°C (11°F) at night to a pleasant 22°C (72°F) during the day. The month sees an average temperature of 5°C (40°F), creating a mix of cool and occasionally warmer days. However, April also ushers in significant rainfall, with 93 mm (3.7 in) of precipitation over 16 days, making it one of the wetter months. Accompanied by a high humidity of 86%, this weather pattern underscores Trondheim's transition into spring, where the beauty of budding nature coexists with the capriciousness of lingering winter chills.

April Temperature in Trondheim

In April, Trondheim experiences a noticeable shift as winter relinquishes its grip, ushering in milder conditions. With minimum temperatures rising to a brisk -12°C (11°F) and averages climbing to a refreshing 5°C (40°F), the city begins to bloom under the sun's warm embrace. The maximum temperature can even reach an impressive 22°C (72°F), hinting at the coming of spring and longer daylight hours. This month serves as a turning point, showcasing a trend of increasing warmth that contrasts sharply with the frigid depths of January and February, making it an ideal time to explore the burgeoning beauty of Trondheim as nature awakens from its winter slumber.

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

The chart illustrates April temperature patterns in Trondheim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trondheim, 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).
JanFebMarAprMayJunJulAugSepOctNovDec292833404857605752433531
Data source: Temperature data for Trondheim 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 Trondheim

April in Trondheim, Norway, experiences a notable balance of precipitation, with 93 mm (3.7 in) falling over 16 days. This amount closely mirrors the wintery months preceding it, hinting at a gradual transition as spring unfolds. Compared to March's 111 mm, the rainfall in April marks a slight decrease; however, it remains significant, suggesting that the region is still embracing its wet season. As the days grow longer and warmer, the rain contributes to the melting snows, fostering an environment rich for blooming flora. While precipitation persists, it's clear that April serves as a bridge from the heavier rains of winter towards the lighter showers that characterize late spring and early summer in Trondheim.

April Precipitation Trends in Trondheim

The chart displays monthly precipitation patterns in Trondheim, 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 Trondheim, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec94751119470898811812412388105
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Trondheim

In April, Trondheim experiences a noticeable shift in humidity, which drops to 86% from the higher levels of winter and early spring. This decline signifies the transition towards drier conditions, following a trend of gradually decreasing humidity since January's peak of 96%. While April is still relatively humid compared to the summer months, it sets the stage for May's further reduction to 83%. As the region moves into summer, humidity levels stabilize around 81% in June and July, offering a brief respite before the moisture levels begin to climb again in August. Overall, April marks a critical turning point in Trondheim's humidity season, blending the lingering chill of spring with the anticipation of the warmer months ahead.

April Average Humidity in Trondheim

This chart illustrates the average monthly humidity levels in Trondheim, 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 Trondheim is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%94%91%86%83%81%81%88%90%93%95%97%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Trondheim

As April arrives in Trondheim, the UV Index makes a noticeable leap to 4, transitioning from the low exposure levels of the earlier months to a moderate category. This increase signifies a shift in sun intensity, reducing the safe burn time to just 30 minutes. This trend hints at the approach of sunnier days ahead, as May follows with an even higher UV Index of 5. Residents and visitors alike should take heed of these changing conditions and consider sun protection strategies during outdoor activities. For more detailed information on UV levels throughout the year, explore Trondheim UV Index.

Maximum UV Index Levels in Trondheim for April

The chart shows the monthly maximum UV Index (UVI) for Trondheim 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 Trondheim typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456653211
Data source: Trondheim 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 Trondheim

April in Trondheim heralds a vibrant shift as the days grow longer and the sunshine noticeably intensifies. With approximately 320 hours of sunlight, April marks a significant leap from the preceding months, showcasing nearly double the brightness of January's mere 57 hours. This upward trend continues through May, where the city basks in an impressive 419 hours of sunlight, captivating residents and visitors alike. The gradual increase of daylight not only sparks joy but also entices people outdoors, laying the groundwork for the sun-soaked summer months ahead. As spring unfolds, Trondheim transforms, reminding us of the warm embrace of longer, sunnier days after the long, dark winter.

Monthly Sunshine Duration in Trondheim: April Highlighted

The April sunshine duration represents the total number of hours Trondheim 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.
JanFebMarAprMayJunJulAugSepOctNovDec57h156h241h320h419h413h431h372h258h199h117h60h
Data source: Trondheim April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Trondheim During April

The likelihood of sunny weather in April in Trondheim, Norway reflects a gradual shift from the frosty grasp of winter, with a 29% chance of sunshine marking a modest increase compared to the colder months. This slight improvement is notable when juxtaposed with March's low of 22%, indicating that as spring approaches, the days start to brighten, albeit still sporadically. Following April, the sunny prospects dip slightly in May and June to 28% and 25%, respectively, suggesting that while the sun becomes more prominent in early spring, its consistency remains elusive as summer unfolds. Overall, April serves as a transitional phase where the promise of warmer weather begins to emerge, yet residents should still be prepared for the lingering overcast skies typical of this northern locale.

Percentage of Sunny Days in April in Trondheim

The chart illustrates the percentage of sunny days in Trondheim 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 Trondheim experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%35%22%29%28%25%28%28%20%14%20%25%
Data source: Trondheim April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Trondheim in April

As winter fades, Trondheim experiences a remarkable transformation in daylight duration throughout April, where the sun graces the city for 15 hours each day. This marks a significant increase from the 11 hours enjoyed in March, heralding the arrival of spring and a gradual awakening of nature. The trend is clear: as the days grow longer, the vibrant energy of the city swells, leading into May's generous 18 hours of sunlight. This transition not only brightens the landscape but also uplifts the spirits of residents, creating a beautiful rhythm that paves the way for the summer's peak daylight in June, which boasts an impressive 20 hours. Embracing this seasonal shift, Trondheim's April daylight serves as a vivid reminder of the brilliance that lies just beyond the winter chill.

Average Daylight Hours in Trondheim for April

The chart illustrates the variation in daylight duration in Trondheim throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec5h 46m8h 40m11h 50m15h 3m18h 13m20h 19m19h 8m16h 5m12h 54m9h 44m6h 38m4h 41m
Data source: Trondheim daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Trondheim

As spring unfolds in Trondheim, Norway, the April wind brings a gentle breeze with an average speed of 2.7 m/s (6 mph). This marks a slight increase from March's brisker winds at 3.3 m/s (7 mph), suggesting that while winter's chill is fading, the freshness of early spring still cloaks the city. Interestingly, April's winds are notably calmer compared to the vigorous gusts of the preceding month, yet stronger than the mellow breezes expected in May, which typically dips to 1.9 m/s (4 mph). Overall, these subtle shifts in wind patterns reflect the transition into warmer months, where the comforting caress of April’s air invites both locals and visitors to enjoy the blossoming beauty of the season.

Average April Wind Speed in Trondheim

The chart displays monthly wind speed patterns in Trondheim, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.43.32.7 m/s1.91.92.22.12.52.72.52.9
Data source: Trondheim April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Trondheim Compares to Other Months

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

In comparing the weather of April and January, it is evident that April offers a significant shift towards warmer temperatures, with a minimum of -12°C (11°F), an average of 5°C (40°F), and a maximum of 22°C (72°F). In contrast, January experiences much colder conditions, featuring a minimum of -18°C (-1°F), an average of -2°C (29°F), and a maximum of 12°C (53°F). Both months receive similar amounts of precipitation, approximately 93 mm (3.7 in) in April and 94 mm (3.7 in) in January, though April has slightly more rainy days (16) compared to January's 14. Additionally, January tends to be more humid, with humidity levels at 96% compared to April's 86%. For a closer look at January's weather patterns, you can explore Trondheim weather in January.

April weather in Trondheim presents a notable contrast to February's chill. While February sees temperatures plummet to a minimum of -25°C (-12°F), April warms up with a minimum temperature of -12°C (11°F) and averages 5°C (40°F), allowing for more comfortable days. The maximum temperature in April can reach up to 22°C (72°F), significantly higher than February's peak of only 10°C (50°F). Additionally, April experiences more precipitation at 93 mm (3.7 in) over 16 days, compared to February's 75 mm (3.0 in) over 13 days, though both months maintain high humidity levels, with April at 86% and February at 94%. For a closer look at February conditions, check out Trondheim weather in February.

April generally brings milder temperatures compared to March, with a notable increase in the average temperature from March's 1°C (33°F) to April's 5°C (40°F). While both months experience significant precipitation, March has slightly higher levels, with 111 mm (4.4 in) compared to April's 93 mm (3.7 in). Additionally, March is a bit colder with minimum temperatures dropping to -24°C (-12°F), while April sees the lows around -12°C (11°F). Humidity remains high in both months, peaking at 91% in March and slightly decreasing to 86% in April. For more detailed weather insights, check out Trondheim weather in March.

April tends to have a wider range of temperatures, with minimums dropping as low as -12°C (11°F) and maximums reaching 22°C (72°F). In contrast, May sees milder conditions, with a minimum of -2°C (28°F) and a maximum of 27°C (80°F). Precipitation decreases slightly from April to May, dropping from 93 mm (3.7 in) over 16 days to 70 mm (2.7 in) over 15 days, while humidity reduces marginally from 86% to 83%. Overall, May offers a warmer and slightly drier climate compared to April. For more detailed information, visit Trondheim weather in May.

In April, the weather is characterized by a wider temperature range, with minimums plunging to -12°C (11°F) and maximums reaching 22°C (72°F), leading to an average of just 5°C (40°F). This month experiences significant precipitation, averaging 93 mm (3.7 in) over 16 days, and high humidity at 86%. In contrast, June offers milder conditions with minimum temperatures starting at 3°C (37°F) and peaking at 32°C (89°F), resulting in a more pleasant average of 14°C (57°F). Precipitation slightly decreases to 89 mm (3.5 in) over 14 days, and humidity levels drop to 81%. Overall, June is generally warmer and drier than April. For more detailed insights, you can refer to Trondheim weather in June.

April and July present notably different weather patterns. In April, temperatures can range from a chilly -12°C (11°F) at night to a mild 22°C (72°F) during the day, with an average of around 5°C (40°F). The month is characterized by significant precipitation, with 93 mm (3.7 in) of rain falling over 16 days, and humidity levels reaching a high of 86%.

In contrast, July boasts a much warmer climate, with minimum temperatures of 5°C (41°F) and maximums reaching up to 33°C (92°F), yielding an average of 16°C (60°F). Interestingly, July experiences slightly less precipitation at 88 mm (3.5 in) over the same number of rainy days, but it's accompanied by lower humidity at 81%. For a more detailed insight into what to expect, check out Trondheim weather in July.

April and August in Trondheim display distinct differences in weather patterns. April, with temperatures ranging from a chilly -12°C (11°F) to a more pleasant 22°C (72°F), serves as a transitional month as spring begins to take hold. It experiences 93 mm (3.7 in) of precipitation over 16 days, combined with a high humidity level of 86%. In contrast, August features a warmer climate, with temperatures fluctuating from 4°C (40°F) at night to a maximum of 31°C (88°F) during the day. Although it experiences slightly more precipitation at 118 mm (4.6 in) over 15 days, the humidity remains comparable at 88%. For more details on the weather in August, you can check this link: Trondheim weather in August.

April and September in Trondheim offer contrasting experiences in terms of weather. In April, temperatures can swing from a chilly -12°C (11°F) to a pleasant maximum of 22°C (72°F), with an average of around 5°C (40°F). The month sees about 93 mm (3.7 in) of precipitation across 16 days, accompanied by high humidity levels at 86%. In contrast, September presents a milder climate with minimum temperatures of 2°C (36°F) and a slightly higher average of 11°C (52°F), while still reaching a peak of 22°C (71°F). This month is wetter, accumulating approximately 124 mm (4.9 in) of rainfall over 17 days, and experiences a slight increase in humidity at 90%. For a more detailed look at September weather, visit Trondheim weather in September.

April and October present a transition in weather patterns, yet they share some similarities. April temperatures range from a chilly -12°C (11°F) at night to a pleasant 22°C (72°F) during the day, with an average of 5°C (40°F). In contrast, October's temperatures are milder, fluctuating between -4°C (24°F) and a maximum of 21°C (70°F), with a slightly higher average of 6°C (44°F). Both months experience significant precipitation, with April receiving 93 mm (3.7 in) over 16 days and October seeing a bit more at 123 mm (4.8 in) across 19 days. Humidity levels are also higher in October at 93% compared to April's 86%. For more details, check Trondheim weather in October.

April and November present contrasting yet similarly chilly weather patterns. In April, temperatures experience a wider range, oscillating from a minimum of -12°C (11°F) to a maximum of 22°C (72°F), with an average of 5°C (40°F). This month sees approximately 93 mm (3.7 in) of precipitation over 16 days, accompanied by an 86% humidity level. In comparison, November is notably cooler, with temperatures dipping as low as -14°C (7°F) and peaking at just 14°C (57°F). The average temperature settles at 2°C (36°F), while precipitation is slightly less at 88 mm (3.5 in) over 13 days, and humidity rises to 95%. Both months feature significant precipitation, but November's higher humidity and lower average temperatures create a brisk end-of-year feel. For more details on November weather, check Trondheim weather in November.

April and December present quite contrasting weather conditions. In April, temperatures range from a brisk -12°C (11°F) at the minimum to a pleasant 22°C (72°F) at the maximum, averaging around 5°C (40°F). The month experiences 93 mm (3.7 in) of precipitation over approximately 16 days, with humidity averaging 86%. In contrast, December is colder, with temperatures dipping even lower, ranging from -16°C (3°F) to a maximum of 10°C (50°F), and an average temperature of -1°C (31°F). This month also sees a bit more precipitation at 105 mm (4.1 in) across about 15 days, and the humidity is notably higher at 97%. For more insights on December weather in Trondheim, you can refer to Trondheim weather in December.

Compare Trondheim's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Trondheim

April in Trondheim is a month of transformation, as winter's chill begins to yield to the warmer embrace of spring. Unlike the frigid temperatures of previous months, April can surprise with maximums reaching up to 22°C (72°F), although the average hovers around a brisk 5°C (40°F). While the 86% humidity keeps the air feeling cool, expect frequent precipitation over the 16 days, totaling 93 mm (3.7 in), a change from the drier conditions of summer. This month serves as a bridge from winter's frosty grasp to the blossoming warmth of May, making it a unique and lively time in Trondheim. For more insights into what to expect throughout the year, check out Trondheim Climate.