Last updated: August 27, 2025
September in Vikersund, Norway showcases a remarkable blend of autumnal beauty and variable weather patterns. During this month, temperatures peak at a comfortable 23°C (75°F), while the average hovers around 12°C (54°F), dipping to a cool 3°C (37°F) at night. Visitors can expect approximately 105 mm (4.1 in) of rainfall spread across 12 days, resulting in a lush, vibrant landscape. High humidity levels, averaging 86%, add a crisp freshness to the air, making September a captivating time to experience the charming scenery of this picturesque Norwegian locale.
In September, Vikersund, Norway, experiences a gentle transition from the warmth of summer to the cooler embrace of autumn. With minimum temperatures hovering around 3°C (37°F) and averages rising to about 12°C (54°F), there's a noticeable chill in the air, yet the maximum temperatures can still reach a comfortable 23°C (75°F), allowing for some lingering outdoor activities. As the month progresses, the vibrant greens of the landscape begin to shift, welcoming the onset of fall. This month marks a pivotal shift in weather, where warm days still beckon while the crispness of autumn nights invites cozy gatherings. Overall, September in Vikersund captures a beautiful balance between the fading days of summer and the impending embrace of autumn.
September brings a notable increase in precipitation in Vikersund, Norway, with 105 mm (4.1 in) of rain recorded over 12 days. This marks a significant rise from the summer months, reflecting a shift toward the wetter conditions of autumn. Following August's 92 mm (3.6 in), September's rainfall sets the stage for the wetter months ahead, with only October expected to exceed it at 127 mm (5.0 in). This trend underscores the transition from the warm, relatively dry summer into the cooler, rainier fall, as the community prepares for the seasonal changes that lie ahead.
In September, Vikersund, Norway, experiences a noticeable increase in humidity, reaching 86%. This uptick marks a shift from the relatively dry summer months of June and July, which hover around 74%, and the more moderate 78% of August. As autumn approaches, the humidity levels begin to rise again, reminiscent of the winter months, where humidity is consistently high at 92% from October to December. This pattern underscores a clear seasonal transition, as the crisp air of early fall welcomes the moisture-laden conditions that are characteristic of the region’s long winters. The journey from late summer to autumn reflects Vikersund's dynamic climate, where humidity plays a significant role in shaping the overall atmosphere.
As summer transitions into autumn in Vikersund, Norway, the UV Index begins to decline, reflecting the changing season. In September, the UV Index registers at 4, categorized as moderate, which means sun protection is still advisable, especially for extended outdoor activities. This marks a dip from the peak summer values of 7 in both June and July, when the burn time was significantly shorter at just 25 minutes. Comparatively, September maintains a burn time of 30 minutes, similar to the earlier months of spring, highlighting a gradual shift towards lower sun exposure risks as the year progresses. For those planning outdoor adventures this month, it's essential to stay vigilant about UV protection, even as the days grow shorter. More information can be found at Vikersund UV Index.
UV Risk Categories
As the vibrant summer months wane, September in Vikersund, Norway still bathes in a generous 259 hours of sunshine, marking a charming transition into autumn. This figure reflects a notable decline from the peak of 456 hours in July, illustrating the ebb of daylight as the year progresses. While September shines brightly compared to the dreary winter months—where sunlight dips dramatically to a mere 92 hours in December—it offers a more subdued glow than its preceding summer, particularly August's 373 hours. This gradual reduction hints at the seasonal shift, inviting locals and visitors alike to savor the last golden days before the sun retreats, making way for the cooler months ahead.
In Vikersund, Norway, September marks a significant dip in the likelihood of sunny weather, with only a 24% chance of sunshine. This decline follows a summer that experienced relatively moderate sunshine, peaking at 55% in April and fluctuating between 27% and 43% from May to August. Notably, as autumn approaches, the trend continues downward, making September one of the least sunny months of the year. This pattern suggests that those hoping for bright days in September may want to prepare for more overcast weather, as the crispness of fall sets in and the chance for sun diminishes further into the season.
As summer wanes, September in Vikersund, Norway, offers a gentle transition into autumn with approximately 12 hours of daylight. This marks a noticeable decrease from the sun-soaked days of June, where residents reveled in nearly 18 hours of light. While the daylight hours are still ample for outdoor activities, September showcases a blend of late summer warmth and the early whispers of fall. This month serves as a reminder of nature's cyclical rhythm, with shorter days paving the way for the brisk chill of October and the dimming light of winter approaching. As daylight dwindles, the landscape begins to transform, enveloping Vikersund in a tapestry of autumn hues, making it a captivating time for locals and visitors alike.
In Vikersund, Norway, the month of September sees a gentle breeze with an average wind speed of 1.8 m/s (4 mph), characteristic of the transitional weather that marks the onset of autumn. This continued mildness follows a summer of relatively calm winds, peaking slightly earlier in the year in both April and October, where speeds reached 2.3 m/s and 2.2 m/s respectively. As temperatures begin to cool, September's winds maintain a consistent pace, reminiscent of the steady flow found from January through August, where speeds hover around the 1.7 to 2.3 m/s range. Overall, the gradual shift towards stronger breezes in the fall signals nature's preparation for the more turbulent weather that lies ahead, while September remains a serene yet pivotal moment in Vikersund's annual climatic story.
Weather in Vikersund varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vikersund, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly different weather conditions. In September, temperatures range from a brisk 3°C (37°F) to a comfortable max of 23°C (75°F), with an average of 12°C (54°F). The month sees considerable rainfall, totaling 105 mm (4.1 in) over approximately 12 days, and the humidity sits at a relatively high 86%. In contrast, January plunges into the depths of winter, with temperatures dipping as low as -20°C (-5°F) and peaking at just 10°C (50°F), resulting in an average temperature of -4°C (25°F). Precipitation drops to 57 mm (2.2 in) over about 8 days, with humidity rising slightly to 93%. For a more detailed look at January weather in Vikersund, you can check Vikersund weather in January.
September and February present stark contrasts in weather conditions. In September, temperatures range from a mild 3°C (37°F) to a pleasant 23°C (75°F), with an average of 12°C (54°F), making it a much warmer month compared to February. The precipitation in September is higher, with 105 mm (4.1 in) spread over 12 days, while February experiences lesser rain, totaling 60 mm (2.4 in) over 10 days. Additionally, February is characterized by significantly colder temperatures, with a minimum of -22°C (-6°F) and a maximum of 9°C (48°F), presenting a biting chill compared to the warmth of September. Despite the lower precipitation, February has a humidity level of 91%, slightly higher than September's 86%. For further insights on February weather, visit Vikersund weather in February.
In September, the weather tends to be milder with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 23°C (75°F). This month experiences about 105 mm (4.1 in) of precipitation over 12 days, coupled with a high humidity level of 86%. In contrast, March is significantly colder, with temperatures fluctuating from a minimum of -20°C (-3°F) to a maximum of 15°C (59°F), and an average around freezing at 0°C (32°F). This month sees less precipitation, totaling 64 mm (2.5 in) over just 8 days, but the humidity remains relatively high at 88%. Overall, while September offers warmer and wetter conditions, March is marked by sharp cold, setting the stage for a gradual transition into spring. For more details on March weather, check out Vikersund weather in March.
In comparing the weather of September and April, one can notice distinct differences in temperature and precipitation. September generally offers a milder climate, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 23°C (75°F) and an average of 12°C (54°F). This month sees about 105 mm (4.1 in) of precipitation over 12 days, accompanied by high humidity levels of 86%. Conversely, April tends to be much cooler, with temperatures dropping to a minimum of -13°C (8°F) and an average of just 4°C (40°F), though it can still reach a high of 23°C (73°F). Precipitation is significantly lower in April, with just 39 mm (1.5 in) over 6 days, and humidity is slightly less at 83%. For more insights into April weather specific to Vikersund, you can visit Vikersund weather in April.
September and May present contrasting weather patterns. In September, temperatures range from a mild 3°C (37°F) at night to a comfortable 23°C (75°F) during the day, with an average of 12°C (54°F). The month is characterized by higher humidity at 86% and considerable rainfall, totaling 105 mm (4.1 in) over 12 days. In contrast, May experiences cooler conditions, with nighttime lows dipping to -1°C (30°F) and daytime highs reaching 28°C (82°F), averaging around 9°C (49°F). The precipitation in May is slightly lower at 85 mm (3.4 in) spread over 13 days, and the humidity is notably lower at 75%. For more detailed weather information, you can check Vikersund weather in May.
September and June present contrasting weather patterns. In September, temperatures range from a chilly minimum of 3°C (37°F) to an average of 12°C (54°F), with a maximum of 23°C (75°F). The month is also relatively wet, with 105 mm (4.1 in) of precipitation over 12 days and a high humidity of 86%. Conversely, June enjoys slightly milder temperatures, starting at a minimum of 4°C (39°F) and reaching an average of 15°C (59°F) up to a maximum of 28°C (82°F). Additionally, June experiences less precipitation at 89 mm (3.5 in) over 11 days and lower humidity levels at 74%. For those interested, more detailed information can be found here: Vikersund weather in June.
When comparing the weather in September to that of July, there are noticeable differences in temperature and humidity. September experiences a cooler temperature range, with a minimum of 3°C (37°F) and a maximum of 23°C (75°F), while July boasts warmer temperatures, starting at a minimum of 7°C (44°F) and peaking at 30°C (86°F). Additionally, September has higher humidity levels at 86%, compared to July's 74%. Precipitation is fairly consistent between the two months, with September receiving 105 mm (4.1 in) and July slightly less at 93 mm (3.7 in), both over 12 days. For further details about July weather in Vikersund, you can check this link: Vikersund weather in July.
In comparing the weather between September and August, September tends to be cooler, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 23°C (75°F), while August is warmer, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 27°C (80°F). Additionally, September experiences more precipitation, totaling 105 mm (4.1 in) over 12 days, compared to August's 92 mm (3.6 in) over 14 days. The humidity in September is higher at 86%, compared to August's 78%. For a detailed look at the weather specifics in August, you can visit Vikersund weather in August.
September typically offers milder temperatures, with an average of 12°C (54°F) and a maximum of 23°C (75°F), while October sees a more pronounced chill, featuring an average of 6°C (44°F) and a drop to a maximum of 16°C (62°F). While September experiences significant rainfall of 105 mm (4.1 in) over approximately 12 days, October ushers in slightly heavier precipitation at 127 mm (5.0 in) spread across 14 days. Additionally, humidity levels rise from 86% in September to 92% in October, creating a more damp and crisp atmosphere as the season shifts. For detailed weather trends, check out Vikersund weather in October.
In September, the weather is generally milder, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 23°C (75°F) and an average of 12°C (54°F). This month sees a substantial amount of rainfall, accumulating to 105 mm (4.1 inches) over 12 days, while humidity remains relatively high at 86%. In contrast, November brings colder temperatures, with a minimum of -10°C (14°F) and an average of just 2°C (35°F). Although the maximum temperature reaches a comfortable 13°C (56°F), the month records lower precipitation at 92 mm (3.6 inches) over the same number of days, accompanied by an increase in humidity to 92%. For a more detailed look at November weather, check out Vikersund weather in November.
September and December present dramatically different weather conditions. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 23°C (75°F), with an average of 12°C (54°F). The month sees considerable rainfall, with 105 mm (4.1 in) over approximately 12 days, accompanied by high humidity at 86%.
In contrast, December brings much colder temperatures, with a minimum of -15°C (5°F) and a maximum of 7°C (44°F), averaging around -3°C (27°F). Precipitation totals slightly less at 102 mm (4.0 in) but occurs over more days, totaling about 15 days. The humidity also increases to 92%, contributing to the wintry atmosphere. For more detailed information, you can check Vikersund weather in December.
As September unfolds in Vikersund, it brings a notable shift in weather compared to the balmy summer months. The temperatures gradually decline, with a crispness in the air that signals the approach of autumn. Although pleasant moments still abound, the increased humidity and precipitation hint at the changing seasons, with about 12 days of rain throughout the month. This transition not only affects outdoor plans but also offers a beautiful display of nature’s vibrant hues. For those interested in understanding this seasonal transformation further, detailed insights can be found at Vikersund Climate.