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September Weather in Bronnoysund, Norway

Last updated: August 27, 2025

In September, the average temperature in Bronnoysund, Norway is a refreshing 10°C (51°F). Expect a minimum of 3°C (37°F) and a pleasant maximum of 19°C (66°F). Be prepared for about 247 mm (9.7 in) of precipitation spread over 19 days, and note that the average humidity is a high 84%.

September Temperature in Bronnoysund

In September in Bronnoysund, the average temperature is 10°C (51°F). Maximum temperatures can reach 19°C (66°F), while minimums can drop to as low as 3°C (37°F). Pack accordingly to enjoy your travels while staying comfortable in variable weather.

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

The chart illustrates September temperature patterns in Bronnoysund, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bronnoysund, September typically has an average temperature of 10°C (51°F), with highs reaching up to 19°C (66°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec313033384553575651433732
Data source: Temperature data for Bronnoysund 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 Bronnoysund

In Bronnoysund, in September, the precipitation amount is 247 mm (9.7 in) over a duration of 19 days.

September Precipitation Trends in Bronnoysund

The chart displays monthly precipitation patterns in Bronnoysund, 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 Bronnoysund, September typically receives around 247 mm (9.7 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec19914621214892129114184247217194170
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bronnoysund

In Bronnoysund in September humidity is 84%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill enveloping you, making even short distances feel burdensome and leaving you longing for a cozy indoor refuge while exploring the area.

September Average Humidity in Bronnoysund

This chart illustrates the average monthly humidity levels in Bronnoysund, 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 Bronnoysund is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%80%75%78%79%81%84%87%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bronnoysund

In Bronnoysund 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 Bronnoysund, you can check the information here.

Maximum UV Index Levels in Bronnoysund for September

The chart shows the monthly maximum UV Index (UVI) for Bronnoysund 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 Bronnoysund typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456643211
Data source: Bronnoysund 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 Bronnoysund Compares to Other Months

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

This table compares monthly weather conditions in Bronnoysund, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)199 mm (7.8 inches)86%low
February Weather-1°C (30°F)146 mm (5.7 inches)84%low
March Weather1°C (33°F)212 mm (8.4 inches)83%low
April Weather3°C (38°F)148 mm (5.8 inches)80%moderate
May Weather7°C (45°F)92 mm (3.6 inches)75%moderate
June Weather12°C (54°F)129 mm (5.1 inches)78%high
July Weather14°C (58°F)114 mm (4.5 inches)79%high
August Weather13°C (56°F)184 mm (7.2 inches)81%moderate
September Weather10°C (51°F)247 mm (9.7 inches)84%moderate
October Weather6°C (43°F)217 mm (8.5 inches)87%low
November Weather3°C (37°F)194 mm (7.6 inches)86%low
December Weather0°C (33°F)170 mm (6.7 inches)85%low

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