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September Weather in Hudson Bay, Canada

Last updated: June 18, 2025

In Hudson Bay, Canada, September brings an average temperature of 11°C (52°F), with minimums dipping to -5°C (24°F) and maximums reaching a warm 32°C (91°F). During this time, prepare for precipitation totaling 48 mm (1.9 in) over approximately 7 days, accompanied by a high average humidity of 79%.

September Temperature in Hudson Bay

In September in Hudson Bay, the average temperature is 11°C (52°F). Maximums can reach 32°C (91°F), while minimums can drop as low as -5°C (24°F). Travelers should prepare for a wide range of temperatures to fully enjoy their visit.

September Weather in Hudson Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hudson Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hudson Bay, September typically has an average temperature of 11°C (52°F), with highs reaching up to 32°C (91°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec411933516165615237188
Data source: Temperature data for Hudson Bay 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 Hudson Bay

In Hudson Bay in September, the total precipitation amount is 48 mm (1.9 in) over a span of 7 days.

September Precipitation Trends in Hudson Bay

The chart displays monthly precipitation patterns in Hudson Bay, 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 Hudson Bay, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2613332944891076348403721
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hudson Bay

In Hudson Bay in September humidity is 79%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps through your clothes, making prolonged outdoor activities uncomfortable for travelers.

September Average Humidity in Hudson Bay

This chart illustrates the average monthly humidity levels in Hudson Bay, 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 Hudson Bay is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%96%94%84%72%64%78%81%79%83%91%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hudson Bay

In Hudson Bay in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Hudson Bay, you can refer to this Hourly UV Index in Hudson Bay.

Maximum UV Index Levels in Hudson Bay for September

The chart shows the monthly maximum UV Index (UVI) for Hudson Bay 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 Hudson Bay typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec134678876321
Data source: Hudson Bay 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 Hudson Bay Compares to Other Months

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

This table compares monthly weather conditions in Hudson Bay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-15°C (4°F)26 mm (1.0 inches)93%low
February Weather-17°C (2°F)13 mm (0.5 inches)96%moderate
March Weather-7°C (20°F)33 mm (1.3 inches)94%moderate
April Weather1°C (33°F)29 mm (1.1 inches)84%high
May Weather10°C (51°F)44 mm (1.7 inches)72%high
June Weather16°C (61°F)89 mm (3.5 inches)64%very high
July Weather19°C (66°F)107 mm (4.2 inches)78%very high
August Weather16°C (62°F)63 mm (2.5 inches)81%high
September Weather11°C (52°F)48 mm (1.9 inches)79%high
October Weather3°C (37°F)40 mm (1.6 inches)83%moderate
November Weather-8°C (18°F)37 mm (1.4 inches)91%low
December Weather-13°C (8°F)21 mm (0.8 inches)95%low

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