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September Weather in Mysen, Norway

Last updated: August 27, 2025

In September, the average temperature in Mysen, Norway is a pleasant 12°C (54°F). Expect temperatures to range from a chilly -2°C (29°F) at night to a warm 24°C (76°F) during the day. With an average precipitation of 92 mm (3.6 in) spread over about 12 days, and humidity levels reaching a cozy 86%, it's a month that can be both refreshing and a bit damp!

September Temperature in Mysen

In September in Mysen, the average temperature is 12°C (54°F). The maximum can reach 24°C (76°F), while the minimum can be as low as -2°C (29°F). This varied climate makes Mysen a great destination for travelers seeking a mix of mild and cool weather.

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

The chart illustrates September temperature patterns in Mysen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mysen, September typically has an average temperature of 12°C (54°F), with highs reaching up to 24°C (76°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec313035435262646154453731
Data source: Temperature data for Mysen 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 Mysen

In Mysen in September, the precipitation amount is 92 mm (3.6 in) over the course of 12 days.

September Precipitation Trends in Mysen

The chart displays monthly precipitation patterns in Mysen, 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 Mysen, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec52585735848310093931088783
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mysen

In Mysen 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 Mysen

This chart illustrates the average monthly humidity levels in Mysen, 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 Mysen is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec94%92%89%82%73%71%72%77%86%92%93%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mysen

In Mysen 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 Mysen for better planning.

Maximum UV Index Levels in Mysen for September

The chart shows the monthly maximum UV Index (UVI) for Mysen 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 Mysen typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Mysen 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 Mysen Compares to Other Months

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

This table compares monthly weather conditions in Mysen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)52 mm (2.1 inches)94%low
February Weather-1°C (30°F)58 mm (2.3 inches)92%low
March Weather2°C (35°F)57 mm (2.3 inches)89%moderate
April Weather6°C (43°F)35 mm (1.4 inches)82%moderate
May Weather11°C (52°F)84 mm (3.3 inches)73%moderate
June Weather17°C (62°F)83 mm (3.3 inches)71%high
July Weather18°C (64°F)100 mm (3.9 inches)72%high
August Weather16°C (61°F)93 mm (3.7 inches)77%moderate
September Weather12°C (54°F)92 mm (3.6 inches)86%moderate
October Weather7°C (46°F)108 mm (4.3 inches)92%low
November Weather3°C (38°F)87 mm (3.4 inches)93%low
December Weather0°C (32°F)83 mm (3.3 inches)93%low

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