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September Weather in Ytre Arna, Norway

Last updated: August 27, 2025

In September, the average temperature in Ytre Arna, Norway hovers around 11°C (53°F), with a minimum dipping to 3°C (38°F) and a maximum peaking at 21°C (70°F). Expect about 332 mm (13.1 in) of precipitation over 18 days, contributing to an average humidity level of 93%. Be prepared for a chilly and wet month!

September Temperature in Ytre Arna

In September in Ytre Arna, the average temperature is 11°C (53°F). The maximum can reach 21°C (70°F) and the minimum can be as low as 3°C (38°F). This mild climate makes it a pleasant time for travel, perfect for outdoor activities and exploring the local sights.

September Weather in Ytre Arna: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ytre Arna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ytre Arna, September typically has an average temperature of 11°C (53°F), with highs reaching up to 21°C (70°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec343437424956585753464036
Data source: Temperature data for Ytre Arna 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 Ytre Arna

In Ytre Arna in September, the total precipitation amount is 332 mm (13.1 in), recorded over a span of 18 days.

September Precipitation Trends in Ytre Arna

The chart displays monthly precipitation patterns in Ytre Arna, 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 Ytre Arna, September typically receives around 332 mm (13.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec22221922613694174168255332363251256
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ytre Arna

In Ytre Arna in September humidity is 93%. With an average temperature of 11°C (53°F), this humidity feels like a wet blanket enveloping you, making even the simplest of activities feel exhausting and stifling for traveling.

September Average Humidity in Ytre Arna

This chart illustrates the average monthly humidity levels in Ytre Arna, 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 Ytre Arna is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec98%96%94%90%87%83%87%91%93%95%97%97%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ytre Arna

In Ytre Arna 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 Ytre Arna for better planning.

Maximum UV Index Levels in Ytre Arna for September

The chart shows the monthly maximum UV Index (UVI) for Ytre Arna 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 Ytre Arna typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457654211
Data source: Ytre Arna 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 Ytre Arna Compares to Other Months

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

This table compares monthly weather conditions in Ytre Arna, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)222 mm (8.8 inches)98%low
February Weather1°C (34°F)219 mm (8.6 inches)96%low
March Weather3°C (37°F)226 mm (8.9 inches)94%moderate
April Weather6°C (42°F)136 mm (5.4 inches)89%moderate
May Weather9°C (49°F)94 mm (3.7 inches)86%moderate
June Weather13°C (56°F)174 mm (6.8 inches)83%high
July Weather15°C (58°F)168 mm (6.6 inches)87%high
August Weather14°C (58°F)255 mm (10.0 inches)91%moderate
September Weather11°C (53°F)332 mm (13.1 inches)93%moderate
October Weather8°C (46°F)363 mm (14.3 inches)95%low
November Weather4°C (40°F)251 mm (9.9 inches)97%low
December Weather2°C (36°F)256 mm (10.1 inches)97%low

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