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September Weather in Raettvik, Sweden

Last updated: August 27, 2025

In Raettvik, Sweden, the average temperature in September hovers around 10°C (51°F). Expect a minimum of 0°C (32°F) and a maximum that can reach 22°C (72°F). Be prepared for some rain, as 67 mm (2.6 in) of precipitation is typical over 12 days. With an average humidity of 88%, you'll want to dress accordingly for the damp weather!

September Temperature in Raettvik

In September in Raettvik, the average temperature is 10°C (51°F). Maximum temperatures can reach 22°C (72°F), while minimums can drop as low as 0°C (32°F). This climate makes Raettvik a great destination for travelers seeking mild weather and the chance to experience a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Raettvik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Raettvik, September typically has an average temperature of 10°C (51°F), with highs reaching up to 22°C (72°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec252530384859615951423427
Data source: Temperature data for Raettvik 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 Raettvik

In Raettvik in September, the precipitation amount is 67 mm (2.6 in) distributed over 12 days.

September Precipitation Trends in Raettvik

The chart displays monthly precipitation patterns in Raettvik, 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 Raettvik, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec383740325970709767925461
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Raettvik

In Raettvik in September, humidity is 88%. With an average temperature of 10°C (51°F), this humidity feels like a thick blanket of moisture enveloping you, making every step feel heavier and leaving you yearning for a refreshing breeze as you navigate the streets.

September Average Humidity in Raettvik

This chart illustrates the average monthly humidity levels in Raettvik, 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 Raettvik is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%94%91%85%77%76%75%80%89%93%96%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Raettvik

In Raettvik 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 Raettvik for better planning.

Maximum UV Index Levels in Raettvik for September

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

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

This table compares monthly weather conditions in Raettvik, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)38 mm (1.5 inches)97%low
February Weather-4°C (25°F)37 mm (1.5 inches)94%low
March Weather-1°C (31°F)40 mm (1.6 inches)91%moderate
April Weather3°C (38°F)32 mm (1.3 inches)85%moderate
May Weather9°C (48°F)59 mm (2.3 inches)77%moderate
June Weather15°C (59°F)70 mm (2.8 inches)76%high
July Weather16°C (62°F)70 mm (2.8 inches)74%high
August Weather15°C (59°F)97 mm (3.8 inches)80%moderate
September Weather10°C (51°F)67 mm (2.6 inches)88%moderate
October Weather6°C (43°F)92 mm (3.6 inches)93%low
November Weather1°C (34°F)54 mm (2.1 inches)96%low
December Weather-3°C (27°F)61 mm (2.4 inches)96%low

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