September Weather in Churchill, Canada

Last updated: April 22, 2025

Experience the unique climate of Churchill, Canada in September, where temperatures fluctuate from a maximum of 21°C (71°F) during the day to a cool minimum of -2°C (29°F) at night. The month averages around 7°C (46°F), providing a refreshing transition into autumn. With precipitation totaling 84 mm (3.3 in) spread across 12 days, the air is notably humid, reaching an average humidity of 86%. This blend of temperatures and moisture creates a vibrant environment, perfect for those eager to witness the spectacular early fall landscapes of this northern gem.

September Temperature in Churchill

In September, Churchill, Canada, experiences a refreshing transition as summer gives way to autumn. With temperatures ranging from a chilly -2°C (29°F) at night to a pleasant 21°C (71°F) during the day, this month showcases the last remnants of warmth before the harsher winter sets in. The average temperature hovers around 7°C (46°F), signaling a notable drop from the preceding months of July and August, where highs reached the mid-20s °C. As September progresses, you’ll likely notice cooler evenings—a hint of the enduring winter chill that will soon envelop this northern town. This period serves as a beautiful reminder of nature's cycles, offering crisp air and vibrant foliage as the leaves prepare to fall.

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

The chart illustrates September temperature patterns in Churchill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec-11-130142942545545339-6
Data source: Temperature data for Churchill 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 Churchill

In September, Churchill, Canada experiences a notable shift in precipitation patterns, with 84 mm (3.3 in) of rain falling over 12 days. This marks a decrease from the hefty 106 mm (4.2 in) recorded in August, but still signifies a considerable amount of moisture as the region transitions into fall. The frequency of rainy days remains relatively high, indicating persistent wet weather typical for this time of year. As summer's vibrant rains recede, the landscape begins to prepare for the drier months ahead, setting the stage for October's expected reduction to 65 mm (2.5 in) over 10 days. Overall, September's precipitation underscores a seasonal change, balancing the remnants of summer humidity with the crispness of impending autumn.

September Precipitation Trends in Churchill

The chart displays monthly precipitation patterns in Churchill, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1521313147416410684653727
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Churchill

In September, Churchill, Canada, experiences a humidity level of 86%, which reflects a slight decrease from the peak summer months. This figure illustrates a gradual trend, where humidity begins to ebb from its summer highs of 89% in August to a more moderate level as fall approaches. Throughout the year, Churchill maintains remarkably high humidity levels, particularly during the cold winter months, with January peaking at an impressive 96%. This seasonal shift highlights the transition towards drier air as temperatures drop, setting the stage for the snowy vistas of winter ahead. As autumn sets in, the humidity remains notably high compared to many regions, ensuring Churchill's distinct and rich environmental characteristics are preserved.

September Average Humidity in Churchill

This chart illustrates the average monthly humidity levels in Churchill, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec96%92%89%85%82%83%85%89%86%92%93%99%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Churchill

In September, Churchill, Canada experiences a moderate UV Index of 4, signaling a shift as summer wanes and autumn approaches. While this index is lower than the peak values seen in June and July, it still reminds inhabitants and visitors alike to exercise caution during outdoor activities, with a burn time of 30 minutes. This gradual decline in UV exposure reflects the changing seasons, transitioning from the intense summer sun to more bearable autumn warmth. As the year progresses, those in Churchill can expect a further dip in UV levels, settling to a low index by October. For more detailed insights and daily updates, check out the Churchill UV Index.

Maximum UV Index Levels in Churchill for September

The chart shows the monthly maximum UV Index (UVI) for Churchill 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.
JanFebMarAprMayJunJulAugSepOctNovDec123689764211
Data source: Churchill 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.

September Sunshine in Churchill

September in Churchill, Canada, sees a remarkable transition as the summer warmth begins to fade, offering 157 hours of sunlight. This marks a significant decline from the sun-drenched peak of 349 hours in July. As autumn approaches, the hours of sunlight gradually decrease, reflecting a more subdued natural landscape. Interestingly, while September's light diminishes compared to the vibrant summer months, it still holds more sunshine than the brisk winter months ahead, such as October with 115 hours and November at 101 hours. This transitional month serves as a beautiful reminder of the changing seasons, blending the sun's soft warmth with the crispness of fall.

Monthly Sunshine Duration in Churchill: September Highlighted

The September sunshine duration represents the total number of hours Churchill experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec92h174h235h274h243h299h349h256h157h115h101h91h
Data source: Churchill September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Churchill During September

September in Churchill, Canada, offers a moderate chance of sunny weather, with about 21% likelihood of sunshine as the summer warmth begins to fade. This month stands out against the earlier part of the year, where the chances of clear skies are notably low, dipping to as low as 14% in February and 17% in March. As temperatures start to drop, September retains a significant amount of sunlight compared to other months like January or November, where the sunniest days are scarce. Although it's a transitional period, the sun still shines a respectable amount, making September a pleasant time to enjoy the beauty of Churchill before the full onset of autumn.

Percentage of Sunny Days in September in Churchill

The chart illustrates the percentage of sunny days in Churchill throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Churchill experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%14%17%23%15%23%43%34%21%27%11%10%
Data source: Churchill September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Churchill in September

In September, Churchill, Canada, enjoys a transition in daylight duration, with the sun gracing the sky for approximately 12 hours each day. This marks a noticeable shift from the vibrant summer months, where daylight peaked at an impressive 18 hours in June. As the warm glow of summer gives way to the early whispers of autumn, September’s daylight reflects a gradual decline, yet still offers more light than the stark days of winter that looms ahead. With the days growing shorter, residents and visitors can savor the last glimpses of longer evenings before October ushers in just 10 hours of daylight, highlighting the rhythmic ebb and flow of natural light in this northern landscape.

Average Daylight Hours in Churchill for September

The chart illustrates the variation in daylight duration in Churchill throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 7m9h 19m11h 53m14h 31m16h 55m18h 16m17h 31m15h 17m12h 43m10h 7m7h 43m6h 21m
Data source: Churchill daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Churchill

In September, Churchill, Canada experiences an average wind speed of 6.3 m/s (14 mph), maintaining a steady breeze that is characteristic of the late summer season. This month bridges the summer and fall, showing a slight uptick compared to the wind speeds of August and just a bit lower than the brisk October winds. Over the course of the year, wind speeds generally increase from January's calm 4.5 m/s (10 mph), peaking in April at 7.1 m/s (16 mph) before tapering off slightly as autumn sets in. The consistent winds throughout the year, particularly notable in September, contribute to Churchill's unique atmospheric charm, making it a captivating destination for travelers and nature enthusiasts alike.

Average September Wind Speed in Churchill

The chart displays monthly wind speed patterns in Churchill, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.56.76.27.16.25.56.35.96.3 m/s6.56.15.9
Data source: Churchill September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Churchill Compares to Other Months

The weather in Churchill changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Churchill and find detailed weather information for every month.

In September, the weather in Churchill is significantly milder, with temperatures ranging from a minimum of -2°C (29°F) to an average of 7°C (46°F) and peaking at 21°C (71°F). This month also experiences relatively high humidity at 86% and receives about 84 mm (3.3 in) of precipitation over 12 days. In stark contrast, January brings frigid conditions, with temperatures plunging to a minimum of -39°C (-38°F) and averaging -24°C (-10°F), with a maximum of only -2°C (28°F). Precipitation diminishes dramatically in January to just 15 mm (0.6 in) across 3 days, and humidity rises to 96%. For more detailed information about the January weather, you can visit Churchill weather in January.

In September, the weather in Churchill offers a much milder experience compared to the frigid conditions of February. September temperatures range from a brisk -2°C (29°F) to a comfortable high of 21°C (71°F), with an average temperature of 7°C (46°F). However, this month also sees significant rainfall, totaling 84 mm (3.3 in) over approximately 12 days, coupled with high humidity at 86%. In stark contrast, February plunges into severe cold, featuring minimum temperatures plummeting to -41°C (-42°F) and an average of -25°C (-13°F). The maximum temperature barely reaches -3°C (26°F), and precipitation is minimal, at just 21 mm (0.8 in) over about 4 days, despite the humidity being slightly higher at 92%. For more specific insights on February conditions, visit Churchill weather in February.

In September, the weather showcases a remarkable transition, with temperatures ranging from a chilly -2°C (29°F) to a pleasant maximum of 21°C (71°F), leading to an average of 7°C (46°F). This month experiences 84 mm (3.3 in) of precipitation over about 12 days, while humidity sits at a moderate 86%. In contrast, March ushers in much harsher conditions, with temperatures plummeting to a minimum of -36°C (-32°F) and an average of -18°C (1°F), barely peaking at 3°C (38°F). During this month, precipitation is significantly lower at 31 mm (1.2 in) over just 4 days, but humidity remains high at 89%. For a more detailed look at the weather patterns during March, you can explore Churchill weather in March.

In comparing the weather of September and April, one can observe significant differences. September tends to be milder, with average daily temperatures ranging from a minimum of -2°C (29°F) to a pleasant maximum of 21°C (71°F). The month experiences around 84 mm (3.3 in) of precipitation over approximately 12 days, and humidity levels are relatively high at 86%.

In contrast, April is much colder; temperatures typically fluctuate between a minimum of -28°C (-17°F) and a maximum of 10°C (51°F), with an average of -10°C (14°F). The precipitation is notably lower at 31 mm (1.2 in) spread across 8 days, while humidity remains slightly lower at 85%. For a detailed look at the climate specifics, you can check Churchill weather in April.

September and May in Churchill present a fascinating contrast in weather patterns. September enjoys slightly milder temperatures, with an average of 7°C (46°F) and a maximum of 21°C (71°F), while May is cooler, averaging -1°C (30°F) with a peak of 16°C (62°F). The onset of September brings more rainfall, recording 84 mm (3.3 in) over 12 days compared to May's 47 mm (1.9 in) over 8 days. Humidity levels are comparatively high in September at 86%, whereas May sees a slightly lower humidity of 82%. For a more detailed look at Churchill's weather in May, check out Churchill weather in May.

When comparing the weather in September and June, September generally offers milder average temperatures, ranging from a minimum of -2°C to a maximum of 21°C. In contrast, June showcases slightly cooler temperatures, with a minimum of -3°C and a maximum of 22°C. Despite these similarities, September sees more precipitation, totaling 84 mm over 12 days, compared to June's 41 mm across just 7 days. Humidity levels are fairly close, with September at 86% and June at 83%. For a closer look at June's climate specifics, you can refer to Churchill weather in June.

In comparing the weather between September and July, notable differences emerge. September experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 7°C (46°F), while July is warmer, featuring a minimum of 2°C (36°F) and an average of 12°C (54°F). The maximum temperature in July can reach up to 26°C (78°F), significantly higher than September's maximum of 21°C (71°F). Precipitation is also more abundant in September, with 84 mm (3.3 in) over 12 days compared to July's 64 mm (2.5 in) over 9 days. Humidity levels are quite similar, remaining high at 86% in September and 85% in July. For further insights, you can check out Churchill weather in July.

In comparing the weather of September and August, September tends to be cooler, with temperatures ranging from a minimum of -2°C (29°F) to a maximum of 21°C (71°F), while August generally experiences milder temperatures, with a minimum of 5°C (41°F) and a maximum of 26°C (78°F). Precipitation is slightly lower in September at 84 mm (3.3 in) over 12 days, compared to August's 106 mm (4.2 in) over 14 days. Humidity remains high in both months, though September is marginally lower at 86% compared to August's 89%. For more detailed weather information, you can visit Churchill weather in August.

September and October present a stark contrast in weather patterns. In September, temperatures range from a low of -2°C (29°F) to a comfortable high of 21°C (71°F), making it a relatively mild month with an average temperature of 7°C (46°F). The precipitation level is higher at 84 mm (3.3 in), occurring over 12 days, and humidity sits at 86%. In contrast, October ushers in cooler conditions, with temperatures falling significantly; the minimum drops to -13°C (8°F) and the average temperature plummets to 1°C (33°F). Although precipitation decreases to 65 mm (2.5 in) over 10 days, humidity increases to 91%, contributing to a brisk and often chilly atmosphere. For more detailed information, you can check Churchill weather in October.

In September, temperatures in Churchill range from a minimum of -2°C (29°F) to a pleasant maximum of 21°C (71°F), with an average of 7°C (46°F). During this month, rainfall is relatively moderate, with precipitation totaling 84 mm (3.3 in) over 12 days and humidity at a high 86%.

By contrast, November sees a dramatic drop in temperatures, where the minimum can plummet to -32°C (-25°F) and the maximum only reaches 1°C (35°F), leading to a significantly colder average of -13°C (10°F). The month experiences less precipitation, accumulating 37 mm (1.5 in) over 11 days, but the humidity increases slightly to 93%. For more specific information, check out Churchill weather in November.

September and December present stark contrasts in weather conditions. In September, temperatures range from a chilly -2°C (29°F) at their lowest to a comfortable 21°C (71°F) at their peak, with an average of 7°C (46°F). The month experiences considerable precipitation, with about 84 mm (3.3 in) falling over 12 days, and humidity levels sit high at 86%. In contrast, December brings significantly harsher conditions, with temperatures plummeting to a minimum of -38°C (-36°F) and averaging -21°C (-6°F), peaking at 0°C (32°F). Precipitation decreases to 27 mm (1.0 in) across just 6 days, but the humidity spikes to a near-saturation level of 99%. For more detailed insights into the conditions, check out Churchill weather in December.

Compare Churchill's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Churchill

As September unfolds in Churchill, it brings a noticeable transition from the warm embrace of summer to the chill of autumn. With average temperatures hovering around a brisk 7°C (46°F) and the possibility of occasional dips to -2°C (29°F), residents and visitors alike begin to don warmer layers. The month is marked by a significant uptick in precipitation, with rain gracing the region on 12 days, contributing to a total of 84 mm (3.3 in) of moisture. This heightened humidity at 86% creates a distinct atmosphere that contrasts sharply with the drier summer months. For those interested in exploring Churchill's ever-changing climate, detailed insights can be found at Churchill Climate.