Last updated: August 27, 2025
In Geilo, Norway during September, temperatures create a brisk autumn atmosphere, peaking at a maximum of 20°C (69°F) and dipping to a chilly -2°C (29°F). The average temperature hovers around 7°C (44°F), ideal for those who appreciate cooler climates. With an impressive 115 mm (4.5 in) of precipitation spread over 17 rainy days, expect frequent drizzles that contribute to the lush, vibrant landscapes. Humidity remains high at 92%, making the air feel crisp and refreshing, perfect for nature walks and cozy evenings by the fire. Whether you're an outdoor enthusiast or seeking tranquility, September in Geilo offers a unique blend of autumnal charm and Scandinavian beauty.
In September, Geilo, Norway, begins its transition from the warmth of summer to the brisk chill of autumn. With minimum temperatures hovering around -2°C (29°F), the area starts to feel the crisp embrace of fall, yet it remains quite mild compared to the depths of winter. The average temperature settles at around 7°C (44°F), providing a pleasant environment for outdoor activities amidst stunning natural landscapes. As the month progresses, daytime highs can reach up to 20°C (69°F), making it an ideal time for hikers and nature enthusiasts to explore before the colder months set in. This gradual shift reflects a captivating blend of seasonal beauty, inviting visitors to experience the serene charm of Geilo as it subtly prepares for the winter ahead.
In September, Geilo, Norway, experiences a notable increase in precipitation, with 115 mm (4.5 in) recorded, marking it as one of the wettest months of the year. The frequency of rainy days also peaks, reaching 17 days of rainfall, which hints at the transition from summer's warmth to the crispness of autumn. This surge in precipitation not only ensures lush landscapes but also sets the stage for the upcoming winter months, where the weather pattern generally becomes more stable yet pronounced. As the season shifts, the combination of increased rainfall and cooler temperatures makes September an essential period for the region’s ecosystem, soaking the ground in preparation for the heavier snowfall that will soon follow.
In Geilo, Norway, September brings a notable shift in humidity, stabilizing at a comfortable 92%. As summer transitions to autumn, this figure reflects a modest increase from August's 89%, suggesting that the cooler temperatures of fall create a more humid environment. The trend of high humidity throughout the year is evident, with winter months reaching peaks of 99% in January and 97% in February, while summer months maintain lower levels, with June hitting its lowest at 82%. This pattern showcases Geilo's unique climate, where moisture remains a consistent element, particularly as the crisp autumn air begins to settle in.
In September, Geilo, Norway experiences a moderate UV Index of 4, indicating a shift from the high levels seen during the summer months. As the sun begins to retreat, the burn time lengthens to 30 minutes, offering a bit more protection compared to the peak summer UVs. This signals a transition; while outdoor enthusiasts can still enjoy the stunning landscapes, it's essential to remain vigilant about sun exposure. As autumn approaches, the UV levels will continue to drop, making September a pleasant month for those looking to explore. For ongoing updates on UV conditions, visit Geilo UV Index.
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In Geilo, Norway, September emerges as a delightful transition from the vibrant summer months to the crisp embrace of autumn. With 245 hours of sunshine gracing the landscape, this month continues the warm glow established in the peak summer months of July and August, where sunshine hours reach their zenith at 457 and 380 hours, respectively. As the days grow shorter, September still offers a substantial quantity of sunlight, outshining the gloomy threshold of October with its 190 hours. This trend reflects a broader seasonal ebb, where the sun's presence begins to wane as winter approaches, yet September allows residents and visitors alike to bask in the golden hues of early autumn, capturing the charm of nature's transition beautifully.
In Geilo, Norway, the likelihood of basking in sunshine takes a notable dip as September rolls in, with only a 17% chance of sunny weather. This marks a significant decline from the brighter days of summer, where peak sunshine chances are observed in July at 42%. As the year progresses from the bustling summer months of June and July to the tranquil shifts of autumn, the sun becomes increasingly elusive. When comparing September to the sunnier days of late spring, like April's 52%, it's clear that this scenic mountain village prepares for the cozy embrace of autumn, where low chances of sunshine beckon the beauty of fall foliage rather than bright rays.
As the summer sun begins its descent in Geilo, Norway, September greets residents and visitors with a refreshing balance of 12 hours of daylight. Transitioning from the long, bright days of summer, where daylight peaks at 18 hours in June and July, September marks a gentle shift towards shorter days. With daylight dipping gradually from the exuberance of summer to the more subdued hours of autumn, this month offers a perfect blend of lingering sunlight and crisp air, making it an ideal time for outdoor activities amidst the stunning fall backdrop. As October looms with its even shorter days, September stands as a transitional pause, inviting everyone to soak in the remaining warmth before the darker months set in.
As the days cool down in September, Geilo, Norway experiences a gentle uptick in wind speed, averaging 2.7 m/s (6 mph), a slight rise from the preceding months. This subtle increase reflects a transition, as summer wanes and autumn beckons. Unlike the drier months of May and August, where the winds were notably lighter, September's breeze carries whispers of the changing season. Interestingly, it sets the stage for the brisk winds typical of October and November, which often feature speeds of 3.2 m/s (7 mph) and 2.9 m/s (6 mph) respectively. This pattern underscores the natural rhythm of Geilo’s climate, where each month seamlessly paves the way for the next, blending serenity with a hint of invigorating change.
Weather in Geilo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Geilo, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather. In September, temperatures range from a brisk -2°C (29°F) to a pleasant 20°C (69°F), with an average temperature of 7°C (44°F) and relatively significant precipitation at 115 mm (4.5 in) over 17 days, accompanied by a humidity level of 92%. In stark comparison, January plunges into much colder territory, where temperatures can dip as low as -24°C (-11°F), with an average of -6°C (22°F) and a maximum of only 6°C (43°F). During January, precipitation is less, totaling 61 mm (2.4 in) over 12 days, yet humidity remains high at 99%. For more details on the weather in January, visit Geilo weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a chilly -2°C (29°F) at night to a comfortable 20°C (69°F) during the day, with an average of around 7°C (44°F). The month sees about 115 mm (4.5 in) of precipitation over 17 days and maintains a high humidity level of 92%. In contrast, February experiences much colder weather, with minimum temperatures plummeting to -25°C (-13°F) and an average temperature of -6°C (21°F). The maximum temperature reaches only 6°C (43°F). February also has lower precipitation, totaling 60 mm (2.4 in) across 12 days, but the humidity is slightly higher at 97%. The differences in temperature and precipitation make September feel much milder in comparison to the harsh winter of February. For more details on February weather in Geilo, visit Geilo weather in February.
When comparing September and March weather, September presents a milder temperature range with minimums around -2°C (29°F) and maximums reaching up to 20°C (69°F), along with an average temperature of 7°C (44°F). The month experiences considerable rainfall, totaling 115 mm (4.5 in) over 17 days, and a humidity level of 92%. In contrast, March is significantly colder, with minimum temperatures dropping to -24°C (-10°F) and an average of -4°C (25°F), only peaking at 7°C (45°F). Precipitation in March is lower at 68 mm (2.7 in) over 13 days, but humidity remains high at 94%. For more detailed insights on the weather in March, visit Geilo weather in March.
When comparing the weather in September and April, significant differences in temperature and precipitation emerge. September generally boasts milder temperatures, with a minimum of -2°C (29°F), averaging 7°C (44°F), and a maximum of 20°C (69°F). In contrast, April experiences colder conditions, starting with a minimum of -19°C (-2°F) and an average temperature of 0°C (31°F), peaking at 15°C (59°F). Furthermore, September sees higher precipitation levels at 115 mm (4.5 in) over 17 days, whereas April has a relatively lighter rainfall of 48 mm (1.9 in) over just 9 days. Humidity is slightly higher in September at 92%, compared to April's 89%. For a more detailed look at April weather, visit Geilo weather in April.
In comparing the weather between September and May, it's clear that both months experience significant variations. September tends to be milder, with average temperatures around 7°C (44°F) and maximums reaching up to 20°C (69°F), while May has a cooler average of 5°C (41°F) and highs of 23°C (73°F). In terms of precipitation, September is wetter, with 115 mm (4.5 in) falling over 17 days compared to May's 63 mm (2.5 in) over 11 days. Humidity levels are also higher in September at 92%, compared to 85% in May. For a closer look at the details specific to May, you can check out Geilo weather in May.
When comparing the weather in September and June, a notable contrast in temperature can be observed. September experiences cooler conditions with an average temperature of 7°C (44°F) and a maximum of 20°C (69°F), while June is generally warmer, averaging 11°C (51°F) and peaking at 24°C (75°F). Additionally, September tends to be wetter, receiving 115 mm (4.5 in) of precipitation over 17 days, compared to June's 96 mm (3.8 in) over 13 days. Humidity levels are also higher in September at 92%, compared to June's 82%. For more details on June's climate, you can visit Geilo weather in June.
In comparing the weather between September and July, September tends to be cooler with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 20°C (69°F), while July offers milder conditions, with temperatures varying from 0°C (32°F) to 26°C (79°F). September is significantly wetter, receiving 115 mm (4.5 in) of precipitation over 17 days compared to July's 85 mm (3.3 in) across 12 days. Additionally, September experiences higher humidity levels at 92%, which contributes to a more damp feeling, whereas July's humidity is slightly lower at 84%. For more specific details about July weather, you can visit Geilo weather in July.
September weather in Geilo tends to be cooler and wetter compared to August. With minimum temperatures dropping to -2°C (29°F) and average temperatures around 7°C (44°F), September is noticeably chillier, whereas August records a minimum of 0°C (33°F) and averages 10°C (51°F). Additionally, September sees more precipitation, with 115 mm (4.5 in) over 17 rainy days, contrasting with August's 93 mm (3.7 in) across 14 days. The humidity also rises slightly in September to 92%, compared to 89% in August. For more detailed insights, you can check Geilo weather in August.
In September, temperatures in Geilo range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 20°C (69°F), with an average of 7°C (44°F). The month sees considerable precipitation, totaling 115 mm (4.5 in) over 17 days, and maintains a high humidity level of 92%. In contrast, October brings even cooler conditions, with temperatures dropping further—mining at -14°C (7°F) and maxing out at 14°C (57°F), settling at an average of 2°C (36°F). Precipitation remains relatively constant at 113 mm (4.4 in) across 18 days, but humidity increases slightly to 96%. For more details on the weather specifics in October, check out Geilo weather in October.
September and November showcase a stark contrast in weather conditions. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 20°C (69°F), with an average of 7°C (44°F). The month experiences significant rainfall, totaling 115 mm (4.5 in) over about 17 days, accompanied by humidity levels at 92%. In contrast, November brings much colder temperatures, with a minimum of -28°C (-17°F) and a maximum of 9°C (48°F), averaging at -3°C (28°F). While precipitation is somewhat lower at 88 mm (3.5 in) over 15 days, humidity rises to 97%. For more detailed insights, you can check Geilo weather in November.
In September, the weather in Geilo typically features a milder temperature range, with minimums around -2°C (29°F) and maximums reaching up to 20°C (69°F). The average temperature hovers around 7°C (44°F), accompanied by relatively high humidity at 92% and approximately 115 mm (4.5 in) of precipitation over 17 days. In contrast, December brings much colder conditions, with temperatures plummeting to a minimum of -22°C (-7°F) and an average of -5°C (22°F). Although there is slightly less precipitation at 101 mm (4.0 in) over the same number of days, humidity peaks at a staggering 99%. To explore more about Geilo's winter weather, you can visit Geilo weather in December.
September in Geilo marks a distinct transition, where the warmth of summer fades into the crisp embrace of autumn. With average temperatures settling around a cool 7°C (44°F), visitors can expect refreshing days, especially as the maximum reaches a pleasant 20°C (69°F) before the chill of night sets in. However, this month is characterized by increased precipitation, averaging around 115 mm (4.5 in) over 17 days, making it one of the wetter months. The high humidity levels of 92% contribute to a distinctly brisk atmosphere, inviting nature lovers to experience the beauty of fall foliage and the quiet allure of the mountains. For a deeper dive into what to expect throughout the year, explore the Geilo Climate.