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September Weather in Rognan, Norway

Last updated: August 27, 2025

In Rognan, Norway, the average temperature in September hovers around 7°C (45°F). You'll experience a range of -5°C (23°F) to a pleasant 18°C (65°F). Expect 136 mm (5.4 in) of precipitation spread across 17 days, contributing to an average humidity of 93%. Prepare for a cool and damp month!

September Temperature in Rognan

In September in Rognan, the average temperature is 7°C (45°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -5°C (23°F). This diverse weather makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Rognan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rognan, September typically has an average temperature of 7°C (45°F), with highs reaching up to 18°C (65°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec191823303849555244352722
Data source: Temperature data for Rognan 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 Rognan

In Rognan in September, the total precipitation amount is 136 mm (5.4 in) over the course of 17 days.

September Precipitation Trends in Rognan

The chart displays monthly precipitation patterns in Rognan, 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 Rognan, September typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec1361121651088212313214213711510496
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rognan

In Rognan in September, humidity is 93%. With an average temperature of 7°C (45°F), this humidity feels like a chilly, damp embrace that can make outdoor adventures uncomfortable and may require extra layers to stay warm and dry while exploring.

September Average Humidity in Rognan

This chart illustrates the average monthly humidity levels in Rognan, 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 Rognan is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec98%96%93%91%84%81%85%89%93%95%95%98%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rognan

In Rognan 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 Rognan, you can check the information here.

Maximum UV Index Levels in Rognan for September

The chart shows the monthly maximum UV Index (UVI) for Rognan 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 Rognan typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456643111
Data source: Rognan 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 Rognan Compares to Other Months

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

This table compares monthly weather conditions in Rognan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)136 mm (5.4 inches)98%low
February Weather-8°C (18°F)112 mm (4.4 inches)96%low
March Weather-5°C (23°F)165 mm (6.5 inches)93%low
April Weather-1°C (30°F)108 mm (4.3 inches)91%moderate
May Weather3°C (39°F)82 mm (3.2 inches)84%moderate
June Weather9°C (49°F)123 mm (4.8 inches)81%high
July Weather13°C (55°F)132 mm (5.2 inches)85%high
August Weather11°C (52°F)142 mm (5.6 inches)89%moderate
September Weather7°C (45°F)136 mm (5.4 inches)93%moderate
October Weather2°C (35°F)115 mm (4.5 inches)95%low
November Weather-3°C (27°F)103 mm (4.1 inches)95%low
December Weather-6°C (22°F)96 mm (3.8 inches)98%low

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