Last updated: August 27, 2025
In Notodden, Norway, September ushers in the transition to autumn with a maximum temperature peaking at 24°C (76°F), while the average settles around a crisp 11°C (52°F). As the month progresses, temperatures can dip to a minimum of 0°C (33°F), hinting at the approaching chill. Rainfall is frequent, with 129 mm (5.1 in) accumulated over 14 days, contributing to a humidity level of 86% that adds to the brisk, refreshing atmosphere. This blend of mild warmth and damp conditions makes September in Notodden a month of vibrant shifts in nature.
September in Notodden, Norway, marks a delightful transition into autumn, where temperatures begin to cool but still offer a taste of summer's warmth. The month starts with minimums around 0°C (33°F) and peaks at a pleasant 24°C (76°F), resulting in an average temperature of 11°C (52°F). This is a significant shift from the hot, sunny days of July and August, as the summer maxes gradually recede. As leaves begin to change, September provides a comfortable backdrop for outdoor activities, inviting visitors to appreciate the scenic beauty of the region before the chill of October sets in.
In September, Notodden experiences a notable surge in precipitation, with an impressive 129 mm (5.1 in) recorded, making it one of the wettest months of the year. This increase is reflected in the number of wet days, which rises to 14, suggesting that residents can expect more frequent rainfall as summer bids farewell. As the transition into autumn unfolds, September not only showcases a significant uptick from the previous month's 100 mm but also sets the stage for the even wetter October, which averages 136 mm. This upward trend in precipitation underscores a shift towards the wetter, cooler months of the year, highlighting the distinctive climate character of Notodden.
In Notodden, Norway, September marks a notable transition in humidity levels, with a significant increase to 86%. This is a return to the higher levels reminiscent of the winter months, signaling the onset of autumn. Throughout the summer, humidity remained relatively low, hovering around 74% in June and July, which likely contributed to the freshness of the season. However, as August wraps up and September begins, the air becomes noticeably heavier, aligning more closely with the damp conditions typical of the late year, where humidity peaks again in October at 92%. Observing this trend, one can sense that the seasonal shift is not just in temperature but also in the atmospheric embrace that characterizes the scenic beauty of Notodden as it transitions from summer warmth to fall's crispness.
As September rolls into Notodden, Norway, the UV Index begins to reflect the transition from summer to autumn. With a moderate UV Index of 4, exposure levels are still significant but less intense than the peak summer months, where values reached 7 in June and July. This month, the recommended burn time stands at 30 minutes, encouraging sunseekers to be mindful of their skin protection, particularly during midday hours. As daylight wanes and temperatures cool, it’s an ideal time to enjoy outdoor activities while remaining aware of UV exposure. For more insights into sun safety and UV levels, visit Notodden UV Index.
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As the summer fades, September bathes Notodden, Norway in a golden glow with 274 hours of sunshine, offering a last taste of warmth before the chill of autumn sets in. This month signifies a gentle transition, showcasing a notable decline from the peak of July's 470 hours, while still outshining the dreariness of the winter months ahead. The sunshine trend reveals a gradual decrease, starting from the brilliant days of June and July, which pamper the region with abundant daylight. However, September’s cozy sunlight serves as a soothing reminder of the vibrant summer days just passed, while enticing locals and visitors alike to revel in the natural beauty as nature prepares for its seasonal slumber.
As September rolls around in Notodden, Norway, the chance of sunny weather dips to a modest 24%, making it one of the less favorable months for sunshine in the region. This trend is intriguing, especially considering the peak sunniness observed in April at 57%. Following the warmer summer months of June and July, which offer a bit more sun, September marks a transition towards the greyer autumn days ahead. It's clear that while early autumn can still offer beautiful moments, those seeking consistent sunshine might want to relish the last bits of summer while they can, as September tends to shy away from sunny skies.
As summer fades, September in Notodden, Norway, signals a shift in daylight duration, providing approximately 12 hours of daylight—a gradual decrease from the sun-drenched days of summer. Following the peak of 18 hours in June, the days begin to shorten, softening into the autumn months. This transitional period is marked by the fading brightness of September, which still offers a generous amount of daylight compared to the approaching winter months, where light dwindles to just 6 hours by December. The steady decline from 17 hours in July and 15 hours in August sets the stage for shorter, cozier days ahead, inviting residents to embrace the beauty of autumn as the landscape transforms.
As September rolls into Notodden, Norway, we see a slight dip in wind speeds, averaging 1.9 m/s (4 mph), consistent with the calm conditions that have characterized the summer months. This trend reflects a gradual progression from the varied air movements in spring, which peaked at 2.4 m/s in April, to the more tranquil breezes of late summer and early autumn. Interestingly, September's wind conditions serve as a harbinger of the upcoming changes, hinting at a return to slightly brisker winds as October approaches, where speeds are predicted to rise again to 2.3 m/s (5 mph). Thus, while September might feel gentle and serene, it also marks the transition toward the more energetic winds of fall, showcasing the rhythmic seasonal shifts of this picturesque region.
Weather in Notodden varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Notodden, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present strikingly contrasting weather conditions. In September, temperatures range from a mild 0°C (33°F) at night to a pleasant 24°C (76°F) during the day, with an average of 11°C (52°F). The month sees substantial rainfall, with 129 mm (5.1 in) spread over 14 days, while humidity hovers at a comfortable 86%. In contrast, January brings much colder temperatures, with lows plummeting to -21°C (-5°F) and an average of -4°C (25°F), peaking at a mere 9°C (49°F). The winter month experiences less precipitation, at 71 mm (2.8 in) across 9 days, though the humidity is slightly higher at 93%. For a more detailed look at January's weather, you can visit Notodden weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a chilly 0°C (33°F) at night to a warm 24°C (76°F) during the day, with an average of 11°C (52°F). The month experiences considerable rainfall, accumulating 129 mm (5.1 in) over 14 days, and humidity levels are high at 86%. In contrast, February is much colder, with temperatures dipping to a minimum of -19°C (-2°F) and peaking at just 10°C (49°F), averaging -3°C (26°F). Precipitation is noticeably lower, totaling 74 mm (2.9 in) across 11 days, while humidity remains elevated at 91%. For a detailed look at weather specifics, check Notodden weather in February.
When comparing the weather in September and March, notable differences emerge in temperature and precipitation patterns. September enjoys milder conditions with average temperatures ranging from 11°C (52°F) to a maximum of 24°C (76°F), while March experiences much colder weather, with average temperatures hovering around -1°C (31°F) and a maximum of only 14°C (58°F). Precipitation is more pronounced in September, totaling 129 mm (5.1 in) over 14 days compared to March's 80 mm (3.2 in) across 10 days. Both months feature high humidity, with September slightly lower at 86% and March at 88%. For those interested in a detailed overview of March weather, you can refer to this link: Notodden weather in March.
When comparing the weather in September and April, significant differences emerge. September typically experiences milder temperatures, with an average of 11°C (52°F) and a maximum of 24°C (76°F), while April has a cooler average of 4°C (39°F) and can dip to a minimum of -14°C (7°F). Additionally, September is wetter, with 129 mm (5.1 in) of precipitation over 14 days compared to April's 44 mm (1.7 in) over just 7 days. Humidity levels are similar, with September at 86% and April slightly lower at 83%. For more specific details on conditions during April, you can explore Notodden weather in April.
When comparing the weather in September and May, it becomes clear that September tends to be milder overall, with average temperatures around 11°C (52°F) and maximums reaching up to 24°C (76°F). In contrast, May experiences a lower average temperature of 9°C (49°F), but can peak at 26°C (80°F), showcasing the potential for warmer days. September also has higher precipitation, with 129 mm (5.1 in) falling over 14 days, whereas May sees less rainfall at 89 mm (3.5 in) over 13 days. Additionally, the humidity in September is notably higher at 86%, compared to May's 75%. For a closer look at May weather specifics, you can check Notodden weather in May.
In comparing the weather between September and June, September presents a cooler climate with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 24°C (76°F), resulting in an average of 11°C (52°F). It experiences more precipitation, totaling 129 mm (5.1 in) over 14 days, along with high humidity at 86%. In contrast, June offers warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 28°C (83°F), averaging 15°C (59°F). Although June has slightly less precipitation at 106 mm (4.2 in) over 12 days, its humidity is lower at 74%. For a detailed look at the weather in June, you can visit Notodden weather in June.
In comparing the weather between July and September, it is clear that July tends to be warmer overall, with average temperatures reaching 16°C (61°F) and maximums soaring to 30°C (86°F). In contrast, September sees a noticeable drop in temperature, with an average of just 11°C (52°F) and a maximum of 24°C (76°F). Additionally, July experiences slightly less precipitation, totaling 116 mm (4.6 in) over 12 days, compared to September's 129 mm (5.1 in) over 14 days. Humidity levels also differ, with July maintaining a lower humidity at 74%, while September averages a higher 86%. For a more detailed look, you can check Notodden weather in July.
September weather tends to be cooler and wetter compared to August. While August boasts a milder minimum temperature of 3°C (39°F) and an average of 14°C (58°F), September sees a drop to a minimum of 0°C (33°F) and an average of 11°C (52°F). Additionally, September is marked by increased precipitation, with 129 mm (5.1 in) falling over 14 days, compared to August's 100 mm (3.9 in) over 12 days. Humidity also rises significantly in September, reaching 86%, compared to 78% in August. For more details, you can check Notodden weather in August.
In September, temperatures typically ranged from a cool 0°C (33°F) at night to a comfortable 24°C (76°F) during the day, making it generally milder with an average of 11°C (52°F). However, the month saw considerable precipitation, totaling 129 mm (5.1 in) over 14 days, coupled with high humidity levels at 86%.
Contrastingly, October brings even cooler temperatures, with nighttime lows dipping to -5°C (23°F) and daytime highs reaching only up to 17°C (63°F), resulting in a lower average temperature of 6°C (42°F). The month experiences slightly more rainfall at 136 mm (5.4 in) across 16 days and an increase in humidity to 92%. For a detailed look at the weather conditions, you can refer to Notodden weather in October.
In comparing the weather between September and November, we observe a significant drop in temperatures and an increase in humidity. September boasts warmer averages with a minimum of 0°C (33°F) and a maximum of 24°C (76°F), while November experiences a chillier average of 1°C (34°F), with lows dropping to -14°C (7°F). While September receives 129 mm (5.1 in) of precipitation over 14 days, November's rainfall is slightly less at 114 mm (4.5 in) over 13 days. Additionally, humidity rises from 86% in September to 92% in November, reflecting the colder and much more humid conditions. For a detailed look at November's weather patterns, you can check out Notodden weather in November.
September and December present stark contrasts in weather conditions. In September, the temperatures range from a chilly 0°C (33°F) at night to a pleasant 24°C (76°F) during the day, with an average of 11°C (52°F). The month sees a fair amount of rainfall, with 129 mm (5.1 in) recorded over 14 days, alongside high humidity levels averaging 86%. In contrast, December brings much colder temperatures, with lows plummeting to -16°C (4°F) and a maximum of only 8°C (47°F), averaging around -3°C (27°F). Despite slightly lower precipitation at 125 mm (4.9 in) over 15 days, the humidity rises to 92%, making the air feel even colder. For a closer look at December weather specifics, check out Notodden weather in December.
September in Notodden marks a transition to cooler, more unpredictable weather, setting it apart from the balmy days of summer. While temperatures can still reach pleasant highs, they also dip significantly, hinting at the approaching autumn chill. With average humidity levels around 86% and frequent precipitation on about half the month’s days, the air takes on a crispness that rejuvenates the landscape. This month, therefore, is not just a bridge between seasons; it invites a unique atmosphere of reflection and change. For a deeper dive into seasonal patterns, visit Notodden Climate.