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September Weather in Ulefoss, Norway

Last updated: August 27, 2025

In Ulefoss, Norway, the average temperature for September hovers around 12°C (54°F), with extremes ranging from a brisk 2°C (36°F) to a warm 25°C (77°F). Expect 130 mm (5.1 in) of precipitation spread over 13 days, contributing to an average humidity of 86%. Ideal for cozy indoor activities or exploring nature's beauty!

September Temperature in Ulefoss

In September in Ulefoss, the average temperature is 12°C (54°F). Maximums can reach 25°C (77°F), while minimums can drop to as low as 2°C (36°F). It's a great time to explore Ulefoss with mild weather, perfect for outdoor activities and sightseeing.

September Weather in Ulefoss: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ulefoss, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ulefoss, September typically has an average temperature of 12°C (54°F), with highs reaching up to 25°C (77°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec282933415060625953453730
Data source: Temperature data for Ulefoss 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.

September Precipitation in Ulefoss

In Ulefoss in September, the precipitation amount is 130 mm (5.1 in) spread over 13 days.

September Precipitation Trends in Ulefoss

The chart displays monthly precipitation patterns in Ulefoss, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ulefoss, September typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec76808241879710796130141121140
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ulefoss

In Ulefoss in September, humidity is 86%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable and travel challenging due to the heavy, muggy atmosphere.

September Average Humidity in Ulefoss

This chart illustrates the average monthly humidity levels in Ulefoss, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ulefoss is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%83%75%74%74%78%86%92%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ulefoss

In Ulefoss in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Ulefoss for better planning.

Maximum UV Index Levels in Ulefoss for September

The chart shows the monthly maximum UV Index (UVI) for Ulefoss in September, 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 September, the maximum UV index in Ulefoss typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Ulefoss September 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.

How September Weather in Ulefoss Compares to Other Months

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

This table compares monthly weather conditions in Ulefoss, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)76 mm (3.0 inches)93%low
February Weather-2°C (29°F)80 mm (3.1 inches)91%low
March Weather1°C (33°F)82 mm (3.2 inches)88%moderate
April Weather5°C (41°F)41 mm (1.6 inches)83%moderate
May Weather10°C (51°F)87 mm (3.4 inches)75%moderate
June Weather15°C (60°F)97 mm (3.8 inches)74%high
July Weather17°C (63°F)107 mm (4.2 inches)74%high
August Weather15°C (60°F)96 mm (3.8 inches)78%moderate
September Weather12°C (54°F)130 mm (5.1 inches)86%moderate
October Weather7°C (45°F)141 mm (5.5 inches)92%low
November Weather3°C (37°F)121 mm (4.8 inches)92%low
December Weather-1°C (30°F)140 mm (5.5 inches)92%low

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