August Weather in Marstal, Denmark

Last updated: October 30, 2025

August in Marstal, Denmark offers a delightful blend of summer warmth and coastal charm. With maximum temperatures reaching up to 26°C (78°F) and a pleasant average of 18°C (65°F), it's the ideal time to embrace the outdoors. However, visitors should be prepared for occasional rain, as the month sees 83 mm (3.3 in) of precipitation spread over 14 days, contributing to a humidity level of around 77%. Whether you're strolling along the harbor or exploring the scenic surroundings, August presents a vibrant, yet slightly unpredictable, seaside experience.

August Temperature in Marstal

In August, Marstal, Denmark, enjoys a delightful warm spell, with temperatures consistently hovering between 13°C (56°F) and 26°C (78°F). The month typically sees a comfortable average of 18°C (65°F), reflecting a gradual warming trend that begins in the summer and carries into autumn. With these pleasant conditions, August presents the perfect opportunity for outdoor activities and soaking in the stunning coastal scenery. As the summer warmth lingers, visitors can relish the long daylight hours, marking this month as one of the most inviting times to experience the charm of Marstal's vibrant seaside atmosphere.

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

The chart illustrates August temperature patterns in Marstal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marstal, August typically has an average temperature of 18°C (65°F), with highs reaching up to 26°C (78°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec383739455262646560544741
Data source: Temperature data for Marstal generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Marstal

In August, Marstal, Denmark experiences a notable uptick in precipitation, recording 83 mm (3.3 in) of rainfall over 14 days. This marks a distinct increase compared to the preceding months, indicating a shift towards a wetter period as summer transitions into early autumn. The combination of increased rainfall and days of precipitation sets a backdrop for the lush landscapes that characterize this coastal town. As autumn approaches, Marstal typically faces even more significant rainfall, with October averaging a striking 108 mm (4.2 in), suggesting that August's moisture lays the groundwork for the season's dramatic shifts.

August Precipitation Trends in Marstal

The chart displays monthly precipitation patterns in Marstal, 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 Marstal, August typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7367693659557283721087284
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Marstal

In August, Marstal, Denmark experiences a consistent humidity level of 77%, mirroring the conditions of July. This stable figure marks the continuation of a gentle decline from the higher levels seen in the earlier months of the year, where humidity peaks at 90% in January. As summer transitions into fall, the humidity begins to rise again in September, reaching 83%, suggesting a shift towards the more humid seasons ahead. Overall, August stands as a pivotal point in Marstal's climate, where the persistent warmth of summer meets the impending coolness of autumn, providing a moment of balance in this coastal town's atmospheric rhythm.

August Average Humidity in Marstal

This chart illustrates the average monthly humidity levels in Marstal, 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 Marstal is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%88%85%80%77%77%77%84%87%89%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Marstal

In Marstal, Denmark, the UV Index shows notable variation throughout the year, with August reflecting a strong UV Index of 6, categorized as high risk for sun exposure. This trend follows a peak in June with an extremely high index of 8, indicating that the summer months are key for UV intensity. While July maintains a healthy level at 7, August slightly retreats to 6, still requiring caution with a burn time of just 25 minutes. As we transition into September, the UV Index drops to 5, indicating a moderate risk, reminding residents and visitors alike to stay vigilant about sun protection throughout the summer and early fall. For continuous updates and more insights, visit the detailed Marstal UV Index.

Maximum UV Index Levels in Marstal for August

The chart shows the monthly maximum UV Index (UVI) for Marstal 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 Marstal typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568765321
Data source: Marstal 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 Marstal

In August, Marstal, Denmark, basks in an impressive 403 hours of sunshine, marking a peak in the summer's glow as it transitions into the milder autumn months. This vibrant month is a notable highlight, following July's sun-soaked 440 hours, before a gradual decline begins in September with 321 hours. The data tells a story of a sun-drenched summer, where daylight hours steadily increase from the chilly depths of January at a mere 101 hours to the warm embrace of late summer. Such a trend highlights Marstal's allure during these sunlit months, inviting visitors to revel in the beauty of its sun-drenched landscapes while they last.

Monthly Sunshine Duration in Marstal: August Highlighted

The August sunshine duration represents the total number of hours Marstal 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.
JanFebMarAprMayJunJulAugSepOctNovDec101h186h257h367h420h434h440h403h321h250h159h118h
Data source: Marstal August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Marstal During August

In Marstal, Denmark, August stands out with a 38% chance of sunny weather, marking a steady continuation of summer's brightness. This likelihood is in line with July’s figures, suggesting that despite the natural ebb and flow of summer, there's still a healthy opportunity for sun-soaked days in late summer. The months leading up to August, particularly April, herald a noticeable increase in sunshine, while the chances begin to taper off as autumn approaches, dropping to 30% in September. Overall, August presents a promising, sunny appeal for those looking to enjoy the last rays of summer before the season transitions.

Percentage of Sunny Days in August in Marstal

The chart illustrates the percentage of sunny days in Marstal 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 Marstal experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%24%39%53%29%38%33%38%30%29%16%22%
Data source: Marstal August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Marstal in August

In August, Marstal, Denmark experiences a sweet transition as daylight begins to wane, offering around 14 hours of sunlight. This marks a gradual decline from the peak of 17 hours in June, ushering in the end of summer while still embracing long, vibrant days. As the month progresses, there's a noticeable shift, hinting at the upcoming autumn. This trend showcases a beautiful rhythm of nature, where the lush light of summer gradually gives way to the cozy embrace of fall, with daylight steadily decreasing to 12 hours by September. The ebb and flow of daylight not only signals changing seasons but also invites residents and visitors to relish the lush sunsets and rich hues as summer bids farewell.

Average Daylight Hours in Marstal for August

The chart illustrates the variation in daylight duration in Marstal throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 52m9h 41m11h 53m14h 8m16h 8m17h 13m16h 38m14h 50m12h 39m10h 25m8h 23m7h 17m
Data source: Marstal daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Marstal

In August, Marstal, Denmark, experiences an average wind speed of 6.5 m/s (15 mph), marking a gentle midsummer breeze that is slightly stronger than the calmer winds of June (4.7 m/s) and July (5.8 m/s). This increase hints at a gradual buildup in wind intensity as summer transitions toward autumn. Following August, wind speeds see a slight dip in September (5.9 m/s) before rising again in October to 7.5 m/s (17 mph). The overall trend reveals that while the summer months tend to be milder, the approaching fall brings a return to brisk winds, showcasing Marstal’s dynamic coastal climate that keeps sailors and nature enthusiasts on their toes.

Average August Wind Speed in Marstal

The chart displays monthly wind speed patterns in Marstal, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.27.46.26.36.14.75.86.5 m/s5.97.56.87.4
Data source: Marstal August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Marstal Compares to Other Months

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

August and January present stark contrasts in weather. In August, temperatures range from a mild 13°C (56°F) to a pleasant max of 26°C (78°F), with an average of 18°C (65°F) and humidity at 77%. The month sees a significant 83 mm (3.3 in) of precipitation over approximately 14 days. Conversely, January brings much colder conditions, with temperatures dipping as low as -8°C (17°F) and only reaching up to 10°C (51°F), averaging just 3°C (38°F). The month experiences slightly lower precipitation at 73 mm (2.9 in), yet the humidity is notably higher at 90%, also across 14 days. For more insights about January weather in Marstal, you can check out Marstal weather in January.

In August, Marstal experiences relatively mild temperatures with a range from a low of 13°C (56°F) to a high of 26°C (78°F), making it a warm and pleasant month with an average temperature of 18°C (65°F). The humidity sits at a comfortable 77%, and while there is some precipitation, totaling 83 mm (3.3 in) over 14 days, it doesn't significantly detract from outdoor activities.

In stark contrast, February brings much chillier weather, where temperatures can drop to a minimum of -6°C (22°F) and peak at 11°C (52°F). The average temperature in this month rests at just 3°C (38°F). Despite experiencing slightly less precipitation at 67 mm (2.6 in) over 13 days, the higher humidity of 89% can make the cold feel even more intense. For a detailed insight into February's weather, you can visit Marstal weather in February.

The weather in August is significantly warmer than in March, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 26°C (78°F), compared to March's colder range of -6°C (22°F) to 11°C (51°F). In August, the humidity is relatively high at 77%, and there is considerable precipitation of 83 mm (3.3 in) over 14 days. In contrast, March experiences higher humidity at 88%, but with slightly less rainfall, totaling 69 mm (2.7 in) over 12 days. For more detailed climate information, you can check Marstal weather in March.

August is typically warmer and wetter than April, offering a more comfortable climate for outdoor activities. While temperatures in August can range from a cool 13°C (56°F) to a warm 26°C (78°F), April remains much cooler, with temperatures peaking at just 14°C (58°F). Additionally, August experiences more frequent rainfall, with 83 mm (3.3 in) of precipitation over approximately 14 days, compared to April's modest 36 mm (1.4 in) spread across 8 days. Despite its higher humidity at 85%, April’s cool temperatures provide a refreshing contrast to the warmer, humid conditions of August. For more detailed information about April weather, you can visit Marstal weather in April.

In comparing the weather of August and May, August offers a significantly warmer climate, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 26°C (78°F). In contrast, May experiences cooler temperatures, averaging between 5°C (41°F) and 18°C (66°F). Additionally, August sees more rainfall, totaling 83 mm (3.3 in) over 14 days, compared to May's 59 mm (2.3 in) over just 9 days. Despite this, May has a slightly higher humidity level at 80%, compared to August's 77%. For more specific details about May's climate, you can visit Marstal weather in May.

When comparing the weather in August and June, August tends to be warmer with average temperatures reaching 18°C (65°F) compared to June's 16°C (62°F). While both months experience similar humidity levels at 77%, August sees higher maximum temperatures of 26°C (78°F) versus June's 23°C (74°F). However, August also brings more rainfall, with 83 mm (3.3 in) of precipitation over 14 days, compared to June's 55 mm (2.2 in) over just 10 days. For a closer look at June's atmospheric conditions, you can refer to Marstal weather in June.

In comparing the weather of August and July, both months exhibit similar temperature ranges, with minimum temperatures of 13°C (56°F), average temperatures around 18°C (65°F), and maximum temperatures peaking at 26°C (78°F). However, August experiences slightly higher precipitation, totaling 83 mm (3.3 in) over 14 days, compared to July’s 72 mm (2.8 in) across 13 days. Notably, the humidity remains consistent at 77% for both months. For a closer look at July weather specifics, visit Marstal weather in July.

In August, temperatures range from a minimum of 13°C (56°F) to a maximum of 26°C (78°F), with an average of 18°C (65°F), while September sees cooler weather, with temperatures dropping to a minimum of 10°C (51°F) and a maximum of 23°C (75°F), averaging 16°C (61°F). Precipitation is slightly lower in September, totaling 72 mm (2.8 in) over 12 days compared to August's 83 mm (3.3 in) over 14 days. Humidity remains relatively high in both months, with September experiencing a slight increase to 83% compared to August's 77%. For more detailed weather insights, visit Marstal weather in September.

In August, the weather tends to be warmer, with average temperatures around 18°C (65°F) and max highs reaching up to 26°C (78°F), while humidity hovers at 77%. However, October sees a significant drop in temperatures, with averages around 12°C (55°F) and max temperatures peaking at just 18°C (65°F). Additionally, October experiences higher precipitation levels, accumulating 108 mm (4.2 in) over 17 days, compared to August's 83 mm (3.3 in) across 14 days. The humidity also rises to 87% in October, creating a more damp and chilly atmosphere. For more detailed information, you can check Marstal weather in October.

August and November present contrasting weather conditions. In August, the temperatures are significantly warmer, with averages around 18°C (65°F) and maximums reaching up to 26°C (78°F). In contrast, November sees much cooler temperatures, with an average of just 8°C (47°F) and highs of 16°C (62°F). While August experiences relatively high humidity at 77% and more precipitation (83 mm over 14 days), November has even higher humidity levels at 89%, but slightly less rainfall at 72 mm over 15 days. For a more detailed look at November conditions, you can check Marstal weather in November.

In August, the weather in Marstal features mild temperatures, with averages around 18°C (65°F) and maximums reaching 26°C (78°F). The month is relatively humid at 77%, with 83 mm of precipitation spread over 14 days. In contrast, December brings a much colder climate, with average temperatures plummeting to 5°C (41°F) and maximums only reaching 10°C (50°F). This winter month sees slightly more precipitation at 84 mm, but it occurs over 17 days, coupled with an increased humidity of 88%. For more specific information, check out Marstal weather in December.

Compare Marstal's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Marstal

As summer draws to a close, August weather in Marstal offers a delightful mix of warmth and mildness, contrasting with the cooler, more variable temperatures of spring and early summer. With average temperatures hovering around 18°C and maximums occasionally reaching 26°C, this month brings a welcome warmth after the cooler months. However, the increased precipitation, with about 14 rainy days, adds a refreshing touch, reminding visitors that coastal weather can be unpredictable. The high humidity of 77% also creates a sultry atmosphere, setting August apart from the drier, more stable conditions earlier in the summer. For a deeper dive into the unique attributes of Marstal's climate, check out Marstal Climate.