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September Weather in Mosjoen, Norway

Last updated: August 27, 2025

In September, the average temperature in Mosjoen, Norway hovers around 8°C (47°F), with extremes ranging from a brisk -3°C (27°F) to a mild 19°C (66°F). Expect 200 mm (7.9 in) of precipitation over approximately 18 days, contributing to a high average humidity of 91%.

September Temperature in Mosjoen

In September in Mosjoen, the average temperature is 8°C (47°F), with maximums reaching 19°C (66°F) and minimums dropping to as low as -3°C (27°F). This variation in temperature makes it essential to pack layers for your trip, ensuring you're prepared for both mild and cold conditions.

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

The chart illustrates September temperature patterns in Mosjoen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mosjoen, September typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (66°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec212026334253575447382923
Data source: Temperature data for Mosjoen 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 Mosjoen

In Mosjoen in September, the precipitation amount is 200 mm (7.9 in) over the course of 18 days.

September Precipitation Trends in Mosjoen

The chart displays monthly precipitation patterns in Mosjoen, 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 Mosjoen, September typically receives around 200 mm (7.9 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec20814323515897145128173200159163154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mosjoen

In Mosjoen in September, humidity is 91%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making it important to dress in layers while traveling.

September Average Humidity in Mosjoen

This chart illustrates the average monthly humidity levels in Mosjoen, 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 Mosjoen is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%92%88%82%79%83%89%91%94%95%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mosjoen

In Mosjoen in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Mosjoen, you can check the information here.

Maximum UV Index Levels in Mosjoen for September

The chart shows the monthly maximum UV Index (UVI) for Mosjoen 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 Mosjoen typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456643211
Data source: Mosjoen 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 Mosjoen Compares to Other Months

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

This table compares monthly weather conditions in Mosjoen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)208 mm (8.2 inches)97%low
February Weather-7°C (20°F)143 mm (5.6 inches)94%low
March Weather-4°C (26°F)235 mm (9.2 inches)92%moderate
April Weather0°C (33°F)158 mm (6.2 inches)88%moderate
May Weather5°C (42°F)97 mm (3.8 inches)82%moderate
June Weather12°C (53°F)145 mm (5.7 inches)79%high
July Weather14°C (58°F)128 mm (5.0 inches)83%high
August Weather12°C (54°F)172 mm (6.8 inches)89%moderate
September Weather8°C (47°F)200 mm (7.9 inches)91%moderate
October Weather3°C (38°F)159 mm (6.3 inches)94%low
November Weather-1°C (30°F)163 mm (6.4 inches)95%low
December Weather-5°C (23°F)154 mm (6.1 inches)96%low

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