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September Weather in Risor, Norway

Last updated: August 27, 2025

In Risor, Norway, the average temperature in September is a mild 14°C (57°F). Expect minimum temperatures to dip to 5°C (42°F) and maximum highs reaching 24°C (75°F). This month sees an average of 137 mm (5.4 in) of precipitation over 14 days, with humidity levels hovering around 86%. Prepare for a pleasantly cool and slightly wet experience!

September Temperature in Risor

In September in Risor, the average temperature is 14°C (57°F). The maximum can reach 24°C (75°F), while the minimum can be as low as 5°C (42°F). This mild climate makes it an ideal time for exploring the outdoors and enjoying various activities.

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

The chart illustrates September temperature patterns in Risor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Risor, September typically has an average temperature of 14°C (57°F), with highs reaching up to 24°C (75°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec353437435261646257494237
Data source: Temperature data for Risor 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 Risor

In Risor in September, the precipitation amount is 137 mm (5.4 in) spread over 14 days.

September Precipitation Trends in Risor

The chart displays monthly precipitation patterns in Risor, 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 Risor, September typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7991853882908788137170140161
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Risor

In Risor in September humidity is 86%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket enveloping you, making travel feel oppressive and uncomfortably sticky.

September Average Humidity in Risor

This chart illustrates the average monthly humidity levels in Risor, 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 Risor 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 Risor

In Risor 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 Risor for better planning.

Maximum UV Index Levels in Risor for September

The chart shows the monthly maximum UV Index (UVI) for Risor 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 Risor typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457754211
Data source: Risor 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 Risor Compares to Other Months

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

This table compares monthly weather conditions in Risor, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)79 mm (3.1 inches)93%low
February Weather1°C (34°F)91 mm (3.6 inches)91%low
March Weather3°C (37°F)85 mm (3.3 inches)88%moderate
April Weather6°C (44°F)38 mm (1.5 inches)83%moderate
May Weather11°C (52°F)82 mm (3.2 inches)75%moderate
June Weather16°C (61°F)90 mm (3.5 inches)74%high
July Weather18°C (64°F)87 mm (3.4 inches)74%high
August Weather17°C (62°F)88 mm (3.5 inches)78%moderate
September Weather14°C (57°F)137 mm (5.4 inches)86%moderate
October Weather10°C (50°F)170 mm (6.7 inches)92%low
November Weather6°C (43°F)140 mm (5.5 inches)92%low
December Weather3°C (37°F)161 mm (6.3 inches)92%low

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