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September Weather in Greenland, United States

Last updated: June 24, 2025

In September, the average temperature in Greenland, United States hovers around 18°C (65°F). You'll experience a minimum of 7°C (46°F) and a maximum reaching up to 30°C (86°F), making it a delightful time to explore. However, be prepared for some rain, as the region receives about 78 mm (3.1 in) of precipitation over approximately 8 days. With an average humidity of 71%, the weather balances warmth and moisture, creating a unique atmosphere.

September Temperature in Greenland

In September in Greenland, the average temperature is 18°C (65°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 7°C (46°F). This mild climate makes Greenland an ideal destination for outdoor activities and sightseeing during this time of year.

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

The chart illustrates September temperature patterns in Greenland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenland, September typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (86°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec303236465565717165554334
Data source: Temperature data for Greenland 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 Greenland

In Greenland in September, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

September Precipitation Trends in Greenland

The chart displays monthly precipitation patterns in Greenland, 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 Greenland, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec79989414383881237178143108133
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Greenland

In Greenland in September humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.

September Average Humidity in Greenland

This chart illustrates the average monthly humidity levels in Greenland, 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 Greenland is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Greenland

In Greenland in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Greenland.

Maximum UV Index Levels in Greenland for September

The chart shows the monthly maximum UV Index (UVI) for Greenland 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 Greenland typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Greenland 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 Greenland Compares to Other Months

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

This table compares monthly weather conditions in Greenland, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)79 mm (3.1 inches)86%low
February Weather0°C (32°F)98 mm (3.9 inches)84%moderate
March Weather2°C (36°F)94 mm (3.7 inches)82%moderate
April Weather8°C (46°F)143 mm (5.6 inches)80%high
May Weather13°C (55°F)83 mm (3.3 inches)72%very high
June Weather18°C (65°F)88 mm (3.5 inches)72%very high
July Weather22°C (71°F)123 mm (4.8 inches)67%very high
August Weather22°C (71°F)71 mm (2.8 inches)66%very high
September Weather18°C (65°F)78 mm (3.1 inches)71%high
October Weather13°C (56°F)142 mm (5.6 inches)78%moderate
November Weather6°C (43°F)108 mm (4.3 inches)84%moderate
December Weather1°C (34°F)133 mm (5.2 inches)81%low

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