August Weather in Trondheim, Norway

Last updated: August 27, 2025

August in Trondheim, Norway, offers a dynamic weather experience, with temperatures ranging from a pleasant average of 14°C (58°F) to a warm maximum of 31°C (88°F). Despite the warmth, residents and visitors should be prepared for the likelihood of rain, as the month sees about 118 mm (4.6 in) of precipitation spread over 15 days, resulting in a humidity level of 88%. This combination of warmth and moisture creates a unique ambiance, perfect for exploring the vibrancy of Trondheim amid lush, green landscapes.

August Temperature in Trondheim

August in Trondheim, Norway heralds a delightful transition from the warmth of summer, featuring average temperatures around 14°C (58°F). With minimums resting at a comfortable 4°C (40°F) and maximums peaking at approximately 31°C (88°F), the month often showcases pleasant weather perfect for exploration. This period marks a significant warming trend following the chill of the preceding months, with temperatures rising steadily from the bitter cold of winter to the mild climates experienced in late spring and early summer. As summer peaks, Trondheim basks in longer daylight hours, encouraging both locals and visitors to revel in outdoor activities amid the stunning landscapes of this picturesque city.

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

The chart illustrates August 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, 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).
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.

August Precipitation in Trondheim

In August, Trondheim experiences a notable spike in precipitation, recording 118 mm (4.6 in), making it the wettest month of the summer. With rain falling on 15 days, this increase represents a continuation of the region's summer conditions, transitioning towards the wetter autumn months ahead. This pattern reflects a broader trend, as precipitation steadily rises throughout the summer, peaking in August before climbing further in September and October. The lush greenery that characterizes Trondheim during this time is a direct consequence of these summer showers, creating a vibrant landscape that enchants both locals and visitors alike.

August Precipitation Trends in Trondheim

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

August Humidity in Trondheim

In Trondheim, Norway, humidity levels exhibit a notable trend throughout the year, with August experiencing an elevated humidity of 88%. This mid-summer month sees a slight rebound from the lower humidity levels of July, which sits at 81%. As the seasons transition, humidity starts high in January at an impressive 96% but gradually declines to a low of 81% in mid-summer before rising again into the autumn months. This cyclical pattern highlights Trondheim's characteristic moist climate, where the humidity not only shapes the weather but also adds a distinctive vibrancy to its stunning natural landscapes, creating an inviting atmosphere for residents and visitors alike.

August Average Humidity in Trondheim

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

August UV Index in Trondheim

In August, Trondheim experiences a moderate UV Index of 5, allowing residents and visitors alike to enjoy the lingering summer sunshine. This is a slight decrease from the high values seen in June and July, where protection from the sun was especially crucial, as the burn time was only 25 minutes. With an increased burn time of 30 minutes in August, it's an ideal month for outdoor activities, although some caution is still advised. As the season transitions into fall, the UV Index will continue to taper off, descending to a still moderate level of 3 in September, before dropping further into the lower categories in the latter months. For those looking to plan sun-safe outings, understanding the UV trends in Trondheim is essential. For more detailed information, visit Trondheim UV Index.

Maximum UV Index Levels in Trondheim for August

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

August in Trondheim, Norway, welcomes a remarkable 372 hours of sunshine, marking a vibrant continuation of summer's warmth. As the long days of July, which boast a generous 431 hours of sunlight, begin to wane, August still offers ample brightness, making it the perfect time to enjoy the city's outdoor offerings. The trends in sunshine hours reveal a gradual increase from the dreariness of winter—like January's mere 57 hours—culminating in the lush, sun-drenched months of late spring and summer. This delightful month bridges the transition to autumn, where sunlight begins to recede, but the lingering warmth of August continues to enchant both locals and visitors alike.

Monthly Sunshine Duration in Trondheim: August Highlighted

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

Chance of Sun in Trondheim During August

In Trondheim, Norway, the likelihood of sunny weather in August stands at 28%, a reflection of the city’s unique climatic patterns. As summer gives way to autumn, this percentage mirrors the trend seen in July, suggesting a summer that holds onto its final rays of sunshine. Notably, this August probability does not shift significantly from the spring months, which exhibit similar low chances of clear skies. Throughout the year, January enjoys the highest likelihood of sun at 41%, while the darker, colder months of October and November drop drastically to 14% and 20%, respectively. While August may not offer abundant sunny days, it does retain a fair semblance of summer's lingering warmth, making it an enchanting time to experience Trondheim's beauty.

Percentage of Sunny Days in August in Trondheim

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

Daylight Hours in Trondheim in August

In August, Trondheim experiences a notable transition in daylight duration, enjoying about 16 hours of sunlight. This marks a gradual decline from the longest days of summer, peaking in June at 20 hours, and signals the onset of shorter days as autumn approaches. Following the vibrant days of May and June, when the sun bathes the city in light for up to 18 hours, August's daylight still offers ample opportunity to savor the outdoors. As the month progresses, daylight will continues to wane, leading into the fall months of September, where it drops to 12 hours, and October, reducing further to just 9 hours, highlighting Trondheim’s dynamic shift in seasonal light.

Average Daylight Hours in Trondheim for August

The chart illustrates the variation in daylight duration in Trondheim throughout the year, with August 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.

August Winds in Trondheim

In August, the average wind speed in Trondheim, Norway, hovers around 2.1 m/s (5 mph), reflecting a subtle dip from July's slightly breezier 2.2 m/s. Throughout the warmer months, particularly May and June, wind speeds are at their lowest, with both settling at only 1.9 m/s (4 mph), suggesting a more tranquil summer atmosphere. As autumn approaches, we witness a gradual increase, with winds picking up pace in September and October, where speeds rise to 2.5 m/s and 2.7 m/s respectively. This trend highlights a shift towards more invigorating winds as the season changes, with winter months bringing slightly brisker conditions. Overall, Trondheim's wind patterns reveal a dynamic interplay between calm summer breezes and the refreshing gusts of fall, creating a unique and atmospheric experience for its visitors.

Average August Wind Speed in Trondheim

The chart displays monthly wind speed patterns in Trondheim, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.43.32.71.91.92.22.1 m/s2.52.72.52.9
Data source: Trondheim August wind data, generated using information from the Copernicus Climate Change Service.

How August 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 August’s weather to other months in Trondheim, focusing on differences in temperature, rainfall, humidity, and UV levels.

August and January exhibit starkly contrasting weather patterns. In August, temperatures can range from a minimum of 4°C (40°F) to a maximum of 31°C (88°F), accompanied by high humidity levels averaging 88%. This month also sees considerable rainfall, with around 118 mm (4.6 inches) over 15 days. In contrast, January presents a much colder climate, with temperatures dipping as low as -18°C (-1°F) and peaking at only 12°C (53°F). Although January experiences slightly less precipitation at 94 mm (3.7 inches) over 14 days, the humidity remains notably high at 96%. For more detailed information, you can check Trondheim weather in January.

August and February present strikingly contrasting weather in Trondheim. August features much milder temperatures, with averages ranging from a minimum of 4°C (40°F) to a maximum of 31°C (88°F), complemented by relatively high humidity levels of 88%. In contrast, February is characterized by frigid conditions, where temperatures can plummet to a chilling minimum of -25°C (-12°F), with an average hovering around -2°C (29°F) and a maximum of only 10°C (50°F). The month of February also sees higher humidity at 94% and slightly less precipitation than August, totaling 75 mm (3.0 in) across about 13 days. For more detailed insights, you can explore Trondheim weather in February.

When comparing the weather in August and March, notable contrasts emerge. August typically experiences milder conditions, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 31°C (88°F) and an average of 14°C (58°F). This month also sees significant precipitation, with around 118 mm (4.6 in) falling over approximately 15 days, accompanied by high humidity levels of 88%.

In stark contrast, March presents a much colder climate, where temperatures can plummet to as low as -24°C (-12°F), with an average temperature of just 1°C (33°F) and a maximum of 14°C (58°F). Precipitation during this month is slightly lower at 111 mm (4.4 in) but occurs over more days, totaling around 18. The humidity in March is also high at 91%, contributing to a more biting chill compared to the summer warmth of August. For more details on March weather specifically, check out Trondheim weather in March.

When comparing the weather in August and April, notable differences emerge in temperature and precipitation patterns. In August, temperatures range from a minimum of 4°C (40°F) to a maximum of 31°C (88°F), averaging around 14°C (58°F), while April sees a wider temperature range with a minimum of -12°C (11°F) and a maximum of 22°C (72°F), averaging 5°C (40°F). Additionally, August experiences more precipitation, with 118 mm (4.6 in) falling over 15 days, compared to April's 93 mm (3.7 in) over 16 days. Humidity remains relatively high in both months, with August at 88% and April at 86%. For more detailed insights on April weather, you can visit Trondheim weather in April.

In comparing the weather between August and May, August typically presents warmer temperatures, with a minimum of 4°C (40°F) and an average of 14°C (58°F), peaking at a maximum of 31°C (88°F). In contrast, May's temperatures range from a minimum of -2°C (28°F) to a maximum of 27°C (80°F), with an average of 9°C (49°F). While both months experience precipitation on 15 days, August sees more rainfall at 118 mm (4.6 in) compared to May's 70 mm (2.7 in). Additionally, August has a higher humidity level at 88%, slightly surpassing May's 83%. For further details on May weather, you can visit Trondheim weather in May.

In comparing the weather of August and June, we find that both months exhibit similar average temperatures, with June averaging around 14°C (57°F) and August slightly higher at 14°C (58°F). However, August experiences a wider range of temperatures, with a maximum reaching 31°C (88°F) compared to June's 32°C (89°F). Precipitation is more frequent in August, with 118 mm (4.6 in) over 15 days, while June has less rainfall at 89 mm (3.5 in) spread over 14 days. Additionally, August tends to be more humid, averaging 88%, compared to June's 81%. For a detailed look at June weather trends, you can check Trondheim weather in June.

When comparing the weather in August to July, we see a slight shift in temperature and precipitation patterns. August experiences a minimum temperature of 4°C, slightly cooler than July's 5°C, while the average temperature in August is around 14°C, compared to 16°C in July. The maximum temperatures in both months are fairly close, with August peaking at 31°C and July reaching 33°C. Interestingly, August receives more rainfall, totaling 118 mm over 15 days, compared to July's 88 mm across 16 days. Additionally, humidity levels rise in August to 88%, contrasting with July's more comfortable 81%. For more detailed insights on July weather, you can check Trondheim weather in July.

In August, the weather typically showcases a wider temperature range, with minimums around 4°C (40°F) and maximums soaring to 31°C (88°F), resulting in an average of 14°C (58°F). The month sees significant precipitation, with 118 mm (4.6 in) spread across approximately 15 days, and humidity levels remain quite high at 88%.

In contrast, September witnesses a transition to cooler weather, with minimum temperatures dropping to 2°C (36°F) and maximums capping at 22°C (71°F), averaging 11°C (52°F). Precipitation slightly increases to 124 mm (4.9 in) over 17 days, accompanied by a slight rise in humidity to 90%. This shift marks a clear move from the warmth of summer to the onset of autumn. For a more detailed look at the weather during this month, visit Trondheim weather in September.

August and October offer contrasting weather conditions. In August, temperatures can range from a mild 4°C (40°F) at night to a warm average of 14°C (58°F) and peak at a hot 31°C (88°F) during the day. This month also sees substantial precipitation of 118 mm (4.6 in), occurring over 15 days, paired with high humidity levels at 88%. In contrast, October presents a cooler climate, with nighttime temperatures dropping to a minimum of -4°C (24°F) and an average of 6°C (44°F), while daytime highs reach a comfortable 21°C (70°F). Despite the cooler temperatures, October experiences slightly higher precipitation at 123 mm (4.8 in) over 19 days and an increase in humidity to 93%. For a more detailed look at the specifics, check out Trondheim weather in October.

August and November present stark contrasts in weather patterns. In August, temperatures exhibit a significant range, with lows of 4°C (40°F) and highs reaching up to 31°C (88°F), fostering a warm and humid environment characterized by an average of 14°C (58°F). This month experiences considerable precipitation of 118 mm (4.6 in), spread over 15 days. In contrast, November brings a chillier atmosphere, with average temperatures plummeting to about 2°C (36°F), and a minimum temperature of -14°C (7°F). While November sees a reduced total precipitation of 88 mm (3.5 in) over 13 days, the humidity remains quite high at 95%. For more details on weather during this month, you can explore Trondheim weather in November.

In Trondheim, August weather contrasts significantly with that of December. August brings milder temperatures, with a minimum of 4°C (40°F) and an average of 14°C (58°F), allowing for warmer days that can peak at 31°C (88°F). However, it also experiences a fair amount of rainfall, with 118 mm (4.6 in) spread across 15 days and relatively high humidity at 88%.

In stark contrast, December plunges into colder conditions, where temperatures can drop to a minimum of -16°C (3°F) and hover around an average of -1°C (31°F), with a maximum of only 10°C (50°F). Although precipitation is slightly lower at 105 mm (4.1 in) over the same 15 days, the humidity rises to 97%, contributing to a chillier and more rigid atmosphere. For more details on December weather, check out Trondheim weather in December.

Compare Trondheim's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Trondheim

As August unfolds in Trondheim, the weather showcases a blend of summer warmth and early autumn chill, making it distinctly different from the preceding months. With maximum temperatures peaking around 31°C (88°F), this month offers a fleeting taste of summer before cooler days approach. However, the average temperature settles at a more moderate 14°C (58°F), while evenings can dip to a crisp 4°C (40°F). August also sees an increase in precipitation, with rain gracing about 15 days throughout the month, contributing to the overall humidity level of 88%. This mix of conditions calls for versatile preparations, as the beauty of Trondheim's landscapes flourishes amidst the changing weather. For a comprehensive overview of what to expect throughout the year, explore Trondheim Climate.