September Weather in Bowen Island, Canada

Last updated: April 22, 2025

September in Bowen Island, Canada, showcases a delightful transition into autumn with temperatures ranging from a maximum of 28°C (83°F) to a minimum of 6°C (44°F), averaging around 14°C (57°F). The month experiences a notable precipitation total of 242 mm (9.5 in) over 16 days, contributing to the lush, vibrant surroundings. With an average humidity of 76%, visitors can expect a refreshing atmosphere ideal for exploring the island's natural beauty. Whether basking in the remaining warmth or enjoying the serene rain-soaked vistas, September offers a unique charm on Bowen Island.

September Temperature in Bowen Island

In September, Bowen Island experiences a delightful transitional phase as summer gradually yields to autumn. The temperatures range from a minimum of 6°C (44°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F). This month marks a sweet spot for outdoor enthusiasts, where warm days still allow for lingering beach visits and nature hikes, while the crisp evenings herald the approach of fall. As temperatures begin to drop towards the end of the month, the vibrant scenery transforms, making September an enchanting time to witness the island's stunning landscapes bathed in golden hues.

September Weather in Bowen Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bowen Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec373439435055616357474237
Data source: Temperature data for Bowen Island 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 Bowen Island

September on Bowen Island mirrors the spring months in its robust precipitation, with 242 mm (9.5 in) of rainfall recorded over 16 days. This marks a significant increase—matching the totals of March—following the relatively dry summer months of July and August. As temperatures begin to drop and fall approaches, this uptick sets the stage for the wetter months ahead. October and November typically follow suit, bringing even higher rainfall figures, but September's rainfall signals a clear transition, where lush greenery thrives once again, rejuvenated by the early autumn rains.

September Precipitation Trends in Bowen Island

The chart displays monthly precipitation patterns in Bowen Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3662082421931011026168242333463368
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bowen Island

September in Bowen Island, Canada, marks a subtle shift in the seasonal humidity, with levels dipping to 76%—the lowest of the year. This decline follows a summer of warmer months, where humidity hovered around the mid-80s. As the days grow shorter and autumn sets in, the air becomes noticeably crisper and drier, a refreshing contrast to the lingering humidity of August at 77%. Interestingly, September’s humidity level serves as a precursor to the wetter months ahead, as October and November return to the higher range, topping out at 88% and 87%, respectively. This trend highlights Bowen Island's unique coastal climate, where summer's warmth gives way to the cooler, moisture-laden air of fall.

September Average Humidity in Bowen Island

This chart illustrates the average monthly humidity levels in Bowen Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bowen Island

As September graces Bowen Island, the UV Index dips slightly to 7, categorized as high, signaling a renewed awareness for sun safety as summer draws to a close. With a burn time of just 25 minutes, it’s a reminder that even as autumn approaches, the sun's intensity remains significant. This month follows a trend of elevated UV indices experienced throughout the summer, particularly the peak levels of 9 in July and June, where sun exposure required caution. The gradual decrease from August's 8 to September's 7 indicates the sun’s rays will become less fierce, yet vigilance is still crucial. Embrace the beauty of early fall while being mindful of sun protection—learn more about the UV Index throughout the year at Bowen Island UV Index.

Maximum UV Index Levels in Bowen Island for September

The chart shows the monthly maximum UV Index (UVI) for Bowen Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec235689987521
Data source: Bowen Island 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 Bowen Island

September in Bowen Island, Canada, basks in a generous 232 hours of sunshine, marking a distinct transition from the sun-drenched peak of summer. This month benefits from the lingering warmth and brightness that July and August offer, which are the highest with 373 and 336 hours respectively. As the days grow shorter with the onset of fall, September still showcases a vibrant drop, yet retains a significant amount of sunshine compared to the gloomier winter months, where light diminishes to just 87 hours in December. This gradual decline from summer’s radiant heights does not overshadow the beauty of early autumn on Bowen Island; instead, it invites locals and visitors alike to embrace the crisp air and stunning landscapes that September uniquely offers.

Monthly Sunshine Duration in Bowen Island: September Highlighted

The September sunshine duration represents the total number of hours Bowen Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec72h131h190h225h314h316h373h336h232h162h106h87h
Data source: Bowen Island September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bowen Island During September

As summer fades into autumn, Bowen Island's likelihood of sunny weather in September stands at a modest 24%. This signals a notable dip compared to the peak of 61% sunshine in July, reflecting the transitional nature of the season. While September does still hold more potential for sun than the chillier months ahead, such as October with only 18%, it's a stark contrast to the vibrant April and June, both hovering around the 50% mark. This trend highlights the gradual shift towards gloomier days, urging visitors to embrace the fleeting sunshine while they can.

Percentage of Sunny Days in September in Bowen Island

The chart illustrates the percentage of sunny days in Bowen Island 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 Bowen Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec14%21%20%51%37%50%61%39%24%19%11%20%
Data source: Bowen Island September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bowen Island in September

As summer gives way to autumn, Bowen Island experiences a gradual shift in daylight duration throughout September. With 12 hours of daylight, the month marks a gentle transition from the long, sun-drenched days of July and August, which boast up to 15 and 14 hours respectively. This reduction signals the onset of fall, where sunlight gradually wanes, closely resembling the shorter days of spring, such as March's 11 hours. As the island prepares for the cooler months ahead, the shortening of daylight serves as a reminder of the changing seasons, inviting residents and visitors alike to savor the crispness of early autumn.

Average Daylight Hours in Bowen Island for September

The chart illustrates the variation in daylight duration in Bowen Island throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 42m10h 9m11h 56m13h 47m15h 22m16h 10m15h 43m14h 17m12h 31m10h 42m9h 4m8h 13m
Data source: Bowen Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Bowen Island

As September arrives on Bowen Island, Canada, the gentle breeze begins to shift subtly, with an average wind speed of 1.7 m/s (4 mph). This slight increase from the summer months marks a gradual transition into the crispness of autumn. Throughout the year, wind patterns reveal a fascinating trend: while winter boasts slightly higher speeds, the summer remains calm, with speeds dipping to as low as 1.6 m/s. September’s winds, however, signal the end of the mellow summer, preparing the island for the robust gusts of October and November, which ascend to 2.0 m/s and 2.1 m/s, respectively. This harmonious dance of wind speeds reflects the island's evolving climate and invites residents and visitors alike to embrace the changing seasons.

Average September Wind Speed in Bowen Island

The chart displays monthly wind speed patterns in Bowen Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.91.81.71.61.71.61.61.7 m/s2.02.12.1
Data source: Bowen Island September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Bowen Island Compares to Other Months

The weather in Bowen Island 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 Bowen Island and find detailed weather information for every month.

September and January present a stark contrast in weather patterns. In September, temperatures range from a mild 6°C (44°F) at night to a warm 28°C (83°F) during the day, with an average of 14°C (57°F). The month receives a substantial amount of rainfall, totaling 242 mm (9.5 in) over 16 days, and the humidity hovers around 76%. In contrast, January experiences much colder temperatures, with lows plummeting to -10°C (13°F) and highs only reaching 8°C (47°F), averaging just 3°C (37°F). January also sees higher precipitation levels, with 366 mm (14.4 in) over 17 days and increased humidity at 86%. For more details on January weather, visit Bowen Island weather in January.

September and February present contrasting weather experiences. In September, temperatures range from a minimum of 6°C (44°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F). This month sees significant rainfall, totaling 242 mm (9.5 in) over 16 days, and maintains a humidity level of 76%. In stark contrast, February brings much colder conditions, with temperatures dipping as low as -9°C (15°F) and averaging just 1°C (34°F), peaking at 10°C (50°F). Precipitation in February is slightly lower at 208 mm (8.2 in) but occurs over more days, totaling 19, and the humidity climbs to 85%. For a closer look at February conditions specifically, you can visit Bowen Island weather in February.

September and March offer distinct weather experiences. In September, temperatures range from a mild 6°C (44°F) at night to a warm 28°C (83°F) during the day, with an average of 14°C (57°F). The month is typically characterized by a high humidity level of 76% and significant rainfall, totaling 242 mm (9.5 in) over 16 days. In contrast, March sees much cooler temperatures, with nighttime lows dipping to -5°C (23°F) and daytime highs reaching a maximum of 18°C (65°F), averaging around 4°C (39°F). While March shares the same total precipitation of 242 mm (9.5 in), it falls over 18 days, with a slightly higher humidity of 86%. For a detailed overview of March weather, see Bowen Island weather in March.

When comparing the weather in September and April, September typically offers warmer temperatures, with a minimum of 6°C (44°F) and a maximum of 28°C (83°F), resulting in an average of 14°C (57°F). In contrast, April's temperatures are cooler, ranging from a minimum of 0°C (32°F) to a maximum of 22°C (73°F), with an average of just 6°C (43°F). Both months experience significant rainfall, but September sees more precipitation at 242 mm (9.5 in) compared to April's 193 mm (7.6 in), both falling on about 16 days. Additionally, humidity levels are higher in April at 86%, whereas September has a more moderate humidity of 76%. For more details on April weather, you can check out Bowen Island weather in April.

In comparing the weather in September and May, September typically experiences warmer temperatures, with a minimum of 6°C (44°F) and a maximum of 28°C (83°F), while May's temperatures range from a minimum of 1°C (34°F) to a maximum of 24°C (76°F). September also sees a higher average temperature of 14°C (57°F) compared to May's average of 10°C (51°F). In terms of precipitation, September is significantly wetter, receiving 242 mm (9.5 in) over 16 days, while May has only 101 mm (4.0 in) across 12 days. Additionally, May has slightly higher humidity at 81%, compared to September's 76%. For more detailed insights, you can check Bowen Island weather in May.

September and June present notable differences in weather patterns. In June, temperatures range from a minimum of 6°C (43°F) to a scorching maximum of 36°C (97°F), with an average temperature of 13°C (56°F). June also sees a relatively lower precipitation level of 102 mm (4.0 in) over approximately 14 days. Conversely, September offers a cooler climate with minimum temperatures at 6°C (44°F), an average of 14°C (57°F), and a maximum reaching 28°C (83°F). However, it experiences higher rainfall, with 242 mm (9.5 in) recorded over 16 days, contributing to a humidity level of 76%. For more information on June weather, visit Bowen Island weather in June.

In comparing the weather of September and July, we see notable contrasts and similarities. September experiences a broader range of temperatures, with a minimum of 6°C (44°F) and a maximum of 28°C (83°F), while July has a milder temperature range with a minimum of 9°C (48°F) and a maximum of 28°C (82°F). Both months see similar maximum temperatures, but September's average is slightly cooler at 14°C (57°F) compared to July's average of 16°C (61°F).

September is notably wetter, with 242 mm (9.5 in) of precipitation spread over 16 days, in stark contrast to July’s more moderate 61 mm (2.4 in) over 9 days. Humidity levels are slightly higher in July at 84%, compared to September's 76%. Overall, while July offers more stable and drier weather, September brings cooler temperatures and significantly more rainfall. For more details on July weather in this region, you can check Bowen Island weather in July.

September typically experiences cooler temperatures compared to August, with minimums dropping from 10°C (50°F) in August to 6°C (44°F) in September. The average temperature also decreases from 17°C (63°F) to 14°C (57°F), while maximum temperatures remain relatively close, ranging from 30°C (86°F) in August to 28°C (83°F) in September. Additionally, September sees significantly more rainfall, with 242 mm (9.5 in) over 16 rainy days, compared to the 68 mm (2.7 in) over just 9 days in August. Humidity remains consistent between the two months, hovering around 76% in September and 77% in August. For more insights on August weather, visit Bowen Island weather in August.

September and October exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 6°C (44°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F). This month sees substantial rainfall, totaling 242 mm (9.5 in) over 16 days, and humidity levels at 76%. Conversely, October marks a significant drop in temperatures, with minimums dipping to -1°C (30°F) and an average temperature of 9°C (48°F). Despite having a maximum of only 20°C (69°F), October experiences even heavier rainfall at 333 mm (13.1 in) over 18 rainy days, accompanied by increased humidity at 88%. For those interested in specific conditions and climatic nuances, you can explore further details here: Bowen Island weather in October.

September and November exhibit stark contrasts in weather patterns. In September, temperatures range from a mild 6°C (44°F) at night to a warm 28°C (83°F) during the day, coupled with an average temperature of 14°C (57°F). However, this month also sees a significant amount of precipitation, totaling 242 mm (9.5 in) over 16 days, with humidity levels around 76%. In comparison, November brings colder temperatures, with minimums dipping to -4°C (26°F) and averaging just 5°C (42°F), peaking at 13°C (55°F). Precipitation also increases to 463 mm (18.2 in), spread across 20 days, and humidity rises to 87%. For more details, you can check Bowen Island weather in November.

September and December present striking contrasts in weather patterns. In September, temperatures range from a mild minimum of 6°C (44°F) to a pleasant maximum of 28°C (83°F), with an average of 14°C (57°F). The month also experiences considerable rainfall, with 242 mm (9.5 in) over 16 days and humidity averaging 76%. In contrast, December is much colder, with temperatures dipping as low as -13°C (9°F) and averaging only 3°C (37°F), while maxing out at 10°C (51°F). Additionally, December sees increased precipitation at 368 mm (14.5 in) across 19 days, and humidity levels rise to 87%. For a more detailed overview, you can check the Bowen Island weather in December.

Compare Bowen Island's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Bowen Island

As September arrives on Bowen Island, the weather begins to shift, offering a refreshing contrast to the summer warmth. With maximum temperatures dipping to a more comfortable level and a significant increase in precipitation, this month sees the lush landscapes flourish under a veil of moisture. The higher humidity levels enhance the maritime feel, creating a blend of crisp air and gentle warmth that's unique to this transitional period. Although the days of sunshine are fewer, the vibrant autumn hues start to emerge, making September a picturesque time to explore the island. For a deeper insight into the seasonal variations, check out Bowen Island Climate.