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September Weather in Upernavik, Greenland

Last updated: August 23, 2025

In Upernavik, Greenland, the average temperature in September hovers around 1°C (34°F). Expect chilly conditions with a minimum dipping to -8°C (19°F) and a maximum reaching 10°C (50°F). During this period, precipitation averages 47 mm (1.8 in) across 9 days, contributing to a notably high average humidity of 86%.

September Temperature in Upernavik

In September in Upernavik, the average temperature is 1°C (34°F). Maximums can reach 10°C (50°F) and minimums can be as low as -8°C (19°F). Be prepared for chilly weather and pack warm clothing if you're planning to travel during this time.

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

The chart illustrates September temperature patterns in Upernavik, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Upernavik, September typically has an average temperature of 1°C (34°F), with highs reaching up to 10°C (50°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec-0-9-6112535424334261713
Data source: Temperature data for Upernavik 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 Upernavik

In Upernavik in September, the total precipitation amount is 47 mm (1.8 in), which falls over the course of 9 days.

September Precipitation Trends in Upernavik

The chart displays monthly precipitation patterns in Upernavik, 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 Upernavik, September typically receives around 47 mm (1.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec17820242124565347485338
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Upernavik

In Upernavik in September, humidity is 86%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making outdoor adventures brisk and invigorating but challenging for travel.

September Average Humidity in Upernavik

This chart illustrates the average monthly humidity levels in Upernavik, 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 Upernavik is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%92%96%92%92%89%89%90%86%88%90%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Upernavik

In Upernavik in September, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Upernavik, you can visit Hourly UV Index in Upernavik.

Maximum UV Index Levels in Upernavik for September

The chart shows the monthly maximum UV Index (UVI) for Upernavik 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 Upernavik typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec012344432110
Data source: Upernavik 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 Upernavik Compares to Other Months

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

This table compares monthly weather conditions in Upernavik, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-18°C (0°F)17 mm (0.7 inches)95%low
February Weather-23°C (-8°F)8 mm (0.3 inches)92%low
March Weather-21°C (-5°F)20 mm (0.8 inches)96%low
April Weather-11°C (12°F)24 mm (1.0 inches)92%moderate
May Weather-4°C (26°F)21 mm (0.8 inches)92%moderate
June Weather2°C (35°F)24 mm (0.9 inches)89%moderate
July Weather5°C (42°F)56 mm (2.2 inches)89%moderate
August Weather6°C (43°F)53 mm (2.1 inches)89%moderate
September Weather1°C (34°F)47 mm (1.8 inches)86%low
October Weather-3°C (27°F)48 mm (1.9 inches)88%low
November Weather-9°C (17°F)53 mm (2.1 inches)90%low
December Weather-10°C (14°F)37 mm (1.5 inches)93%low

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