September Weather in Iqaluit, Canada

Last updated: June 18, 2025

In September, the average temperature in Iqaluit, Canada hovers around 2°C (37°F). Expect chilly lows of -6°C (22°F) and mild highs reaching up to 12°C (54°F). With 74 mm (2.9 in) of precipitation over approximately 10 days, you might want to carry an umbrella. The average humidity during this time is a brisk 90%, making it feel even cooler.

September Temperature in Iqaluit

In September in Iqaluit, the average temperature is 2°C (37°F). Maximum temperatures can reach 12°C (54°F), while minimum temperatures can drop as low as -6°C (22°F). Be prepared for chilly weather and pack warm clothing if you're planning to visit during this time.

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

The chart illustrates September temperature patterns in Iqaluit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iqaluit, September typically has an average temperature of 2°C (37°F), with highs reaching up to 12°C (54°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Iqaluit generated using information from the Copernicus Climate Change Service.

September Precipitation in Iqaluit

In Iqaluit in September, the precipitation amount is 74 mm (2.9 in) spread over a period of 10 days.

September Precipitation Trends in Iqaluit

The chart displays monthly precipitation patterns in Iqaluit, 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 Iqaluit, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Iqaluit

In Iqaluit in September, humidity is 90%. With an average temperature of 2°C (37°F), this humidity feels like a damp chill that seeps into your bones, making even a short walk feel exhausting and uncomfortable for traveling.

September Average Humidity in Iqaluit

This chart illustrates the average monthly humidity levels in Iqaluit, 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 Iqaluit is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Iqaluit

In Iqaluit 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 Iqaluit, you can check the information here.

Maximum UV Index Levels in Iqaluit for September

The chart shows the monthly maximum UV Index (UVI) for Iqaluit 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 Iqaluit typically reaches 3, which falls under the moderate exposure category.

Data source: Iqaluit 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 Iqaluit Compares to Other Months

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

This table compares monthly weather conditions in Iqaluit, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-23°C (-9°F)	23 mm (0.9 inches)	101%	low
February Weather	-25°C (-13°F)	18 mm (0.7 inches)	99%	low
March Weather	-19°C (-3°F)	30 mm (1.2 inches)	99%	moderate
April Weather	-11°C (12°F)	34 mm (1.4 inches)	97%	moderate
May Weather	-3°C (27°F)	33 mm (1.3 inches)	95%	high
June Weather	4°C (39°F)	45 mm (1.8 inches)	92%	high
July Weather	8°C (46°F)	82 mm (3.2 inches)	84%	moderate
August Weather	7°C (45°F)	94 mm (3.7 inches)	90%	moderate
September Weather	2°C (37°F)	74 mm (2.9 inches)	90%	moderate
October Weather	-2°C (28°F)	55 mm (2.2 inches)	92%	low
November Weather	-9°C (16°F)	45 mm (1.8 inches)	97%	low
December Weather	-15°C (6°F)	39 mm (1.5 inches)	99%	low