September Weather in Bandon, United States

Last updated: February 24, 2025

September in Bandon, United States, offers a delightful transition into autumn, marked by a warm maximum temperature reaching 29°C (84°F). The average temperature hovers around a comfortable 15°C (59°F), while nights cool down to a refreshing minimum of 9°C (48°F). This month experiences moderate precipitation, totaling 52 mm (2.0 in) over the course of 5 days, adding a touch of moisture to the coastal air. With an average humidity level of 66%, visitors can expect a pleasantly mild atmosphere perfect for exploring the stunning natural beauty of the region.

September Temperature in Bandon

In September, Bandon experiences a delightful shift as summer lingers, showcasing a remarkable increase in temperatures. With a minimum of 9°C (48°F) and a maximum climbing to 29°C (84°F), this month stands out as one of the warmest of the year. The average temperature hovers around 15°C (59°F), providing a comfortable backdrop for outdoor activities. The fluctuation from warm days to cooler evenings subtly hints at the impending autumn, creating a vibrant transition. As the sun shines brighter and days grow longer, September in Bandon invites locals and visitors alike to relish the tail end of summer's warmth before the cooler months set in.

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

The chart illustrates September temperature patterns in Bandon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec494748515457585959555149
Data source: Temperature data for Bandon 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 Bandon

September in Bandon marks a subtle transition as summer wanes, bringing a moderate precipitation total of 52 mm (2.0 in) over just five days of rainfall. This uptick in moisture follows the dry spell of July and August, where the combined rainfall barely reached 17 mm (0.7 in), highlighting a shift towards the wetter months. As autumn approaches, the increase in precipitation heralds a return to the region's characteristic dampness, laying the groundwork for the significantly higher rainfall forecasted in October and November. This month serves as a gentle reminder of nature’s rhythms, bridging the gap between the warm, dry summer and the impending winter rains.

September Precipitation Trends in Bandon

The chart displays monthly precipitation patterns in Bandon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2222441641315945895274162226
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bandon

As summer transitions into fall, September in Bandon witnesses a notable dip in humidity, reaching 66%—the lowest level of the year. This decrease marks a shift from the peaks of 84% in January and the 85% average during the winter months, highlighting a gradual reduction in moisture as the year progresses. Following the more humid conditions of August, which sits at 67%, September's air becomes crisper, signaling the onset of autumn. This trend of lowering humidity continues into October, where it ticks up slightly to 77%, before soaring back to 87% in the late fall and winter months. Overall, September acts as a pivotal month, bridging the moist warmth of summer with the cooler, more humid days of autumn.

September Average Humidity in Bandon

This chart illustrates the average monthly humidity levels in Bandon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Bandon

As summer transitions into fall, September in Bandon experiences a notable decline in UV intensity, with the UV Index peaking at 8, categorizing it as very high and aligning closely with the previous month’s 8 in August. The burn time remains short at just 15 minutes, highlighting the importance of sun protection even as the days begin to shorten. This trend of gradually decreasing UV levels continues into October, where the index drops to 5. Overall, while September still calls for cautious sun exposure, its slight drop from the peak summer months signals a shift towards milder sun conditions. For more detailed information on UV levels throughout the year, visit Bandon UV Index.

Maximum UV Index Levels in Bandon for September

The chart shows the monthly maximum UV Index (UVI) for Bandon 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.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Bandon 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 Bandon

As summer gradually transitions into fall, September in Bandon, United States, shines with a commendable 285 hours of sunlight, making it a delightful time to bask in the lingering warmth of the season. Following the peak of July, which boasts a remarkable 381 hours of sunshine, September still retains a vibrant glow, although it dips slightly compared to August's 345 hours. This gentle decline sets the stage for the cooler months ahead, but September's sunny disposition ensures that outdoor adventures remain truly inviting. As the year progresses, the contrast becomes evident; while January starts with a modest 105 hours, September stands as a testament to summer's generous departure, blending warmth and outdoor allure as autumn begins to whisper on the horizon.

Monthly Sunshine Duration in Bandon: September Highlighted

The September sunshine duration represents the total number of hours Bandon 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.
JanFebMarAprMayJunJulAugSepOctNovDec105h153h224h251h317h341h381h345h285h237h170h135h
Data source: Bandon September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bandon During September

In Bandon, September marks a subtle transition towards brighter skies, boasting a 49% chance of sunny weather. This figure highlights a significant uptick from the earlier summer months, where sunny days hover in the range of 38% to 47%. As the summer draws to a close, there is a noticeable trend of increasing sunlit moments, making September an enticing choice for outdoor activities. The likelihood of sunny weather, while slightly lower than the peak summer months, reflects a favorable shift that invites residents and visitors alike to enjoy the crisp, clear days before autumn sets in.

Percentage of Sunny Days in September in Bandon

The chart illustrates the percentage of sunny days in Bandon 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 Bandon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%23%41%50%36%38%40%47%49%34%22%18%
Data source: Bandon September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bandon in September

As summer wanes and September arrives in Bandon, daylight begins to gently recede, offering 12 hours of sunshine—a comforting reminder of the lengthening days observed earlier in the year. After reaching a peak of 15 hours in June, the gradual decline reflects nature's rhythmic shift toward fall. This transition showcases a gradual tapering of daylight that continues into October, as the sun generously rewards the warm months before settling back to about 10 hours by month’s end. September serves as a beautiful bridge, inviting the community to relish the lingering summer warmth while subtly hinting at the cozy changes ahead.

Average Daylight Hours in Bandon for September

The chart illustrates the variation in daylight duration in Bandon throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 32m11h 58m13h 26m14h 41m15h 18m14h 57m13h 50m12h 26m10h 58m9h 41m9h 1m
Data source: Bandon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Bandon

As September unfolds in Bandon, the winds begin to soften. With an average wind speed of 4.9 m/s (11 mph), it marks a continuation of the moderate breezes experienced throughout late summer. This slight dip follows July's peak of 6.5 m/s (15 mph), suggesting a transition toward calmer conditions as the region prepares for autumn. While the winds remain gentle, consistent patterns emerge, with September mirroring October's average, highlighting a stability as the year progresses. Overall, the September winds in Bandon serve as a gentle reminder of nature's cyclic rhythm, inviting both relaxation and reflection before the brisker months descend.

Average September Wind Speed in Bandon

The chart displays monthly wind speed patterns in Bandon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.94.85.54.55.35.16.55.44.9 m/s4.95.15.4
Data source: Bandon September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Bandon Compares to Other Months

The weather in Bandon 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 Bandon and find detailed weather information for every month.

September and January present markedly different weather conditions. In September, temperatures range from a comfortable minimum of 9°C (48°F) to a warm maximum of 29°C (84°F), with an average of 15°C (59°F). This month experiences relatively low precipitation at 52 mm (2.0 in) over five days and humidity levels around 66%. In contrast, January tends to be much cooler, with temperatures ranging from a low of 1°C (34°F) to a high of 17°C (62°F) and an average of 9°C (49°F). This winter month sees significantly higher precipitation, totaling 222 mm (8.7 in) across 16 days, along with increased humidity at 84%. For more information on January weather, check out Bandon weather in January.

September weather is characterized by warmer temperatures, with a minimum of 9°C (48°F) and maximum of 29°C (84°F), making it a pleasant month overall. In contrast, February experiences much cooler weather, with a minimum temperature of 0°C (32°F) and a maximum of 15°C (60°F). Additionally, February is significantly wetter, receiving 244 mm (9.6 in) of precipitation over 17 days, compared to September's 52 mm (2.0 in) over just 5 days. The humidity also rises in February to 85%, compared to 66% in September, contributing to a much more overcast and damp atmosphere. For more detailed insights, check out Bandon weather in February.

September weather generally offers a milder experience with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (84°F), making it one of the warmer months. In contrast, March is cooler, with temperatures typically between 3°C (38°F) and 16°C (62°F), indicating a significant drop as the seasons change. Additionally, September has less precipitation, averaging only 52 mm over about 5 days, while March sees a much wetter climate, with 164 mm falling across 17 days. The higher humidity in March, at 86%, compared to September's 66%, adds to the dampness felt during this early spring month. For more detailed insights into March weather, you can visit Bandon weather in March.

September brings warmer temperatures with a minimum of 9°C (48°F) and an average high reaching 29°C (84°F), creating a pleasant climate for outdoor activities. In contrast, April is cooler, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 19°C (67°F), making it feel quite brisk. Additionally, April experiences significantly more rainfall, with 131 mm (5.2 in) over 13 days compared to September's 52 mm (2.0 in) over just 5 days, which contributes to higher humidity levels of 83% in April versus 66% in September. For more detailed information about April weather, check out Bandon weather in April.

In comparing the weather of September and May, we notice distinct differences. September typically enjoys warmer temperatures, with a minimum of 9°C (48°F) and an average of 15°C (59°F), peaking at a comfortable 29°C (84°F). In contrast, May is cooler, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 23°C (74°F) and an average temperature of 12°C (54°F). While September sees lower precipitation levels at 52 mm (2.0 in) over about 5 days, May records higher rainfall at 59 mm (2.3 in), occurring over 9 days, contributing to its higher humidity of 83% compared to September's 66%. For a closer look at what to expect, you can check out Bandon weather in May.

When comparing September and June weather, September tends to be warmer, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (84°F), while June features slightly cooler averages, showing a minimum of 7°C (46°F) and a maximum of 20°C (69°F). Despite having similar rainfall of around 45 mm (1.8 in) in June and 52 mm (2.0 in) in September, the humidity in June is noticeably higher at 83%, compared to 66% in September. For a closer look at June conditions, you can visit Bandon weather in June.

When comparing the weather in September and July, September typically offers a wider temperature range with minimums around 9°C (48°F) and maximums reaching up to 29°C (84°F). In contrast, July's temperatures are milder, featuring minimums of 10°C (50°F) and maximums only reaching 20°C (69°F). September also experiences a higher level of precipitation, averaging 52 mm (2.0 in) over about 5 days, while July is notably drier with just 8 mm (0.3 in) of rain across a single day. Additionally, September's humidity sits at 66%, slightly lower than July's higher humidity of 78%. For more details on July weather, you can check this link: Bandon weather in July.

In comparing the weather of September and August, we see a noticeable shift in temperature and precipitation levels. September presents a slightly broader temperature range, with minimums around 9°C (48°F) and maximums peaking at 29°C (84°F), compared to August's more constrained temperatures, which range from a minimum of 10°C (51°F) to a maximum of 22°C (71°F). Furthermore, September experiences increased precipitation at 52 mm (2.0 in) over 5 days, while August is much drier with only 9 mm (0.4 in) over just 1 day. Both months have similar average temperatures of 15°C (59°F), but September brings a higher humidity level of 66%, indicating a shift towards a more humid climate. For more detailed insights, check out Bandon weather in August.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 29°C (84°F), and an average of 15°C (59°F). The month sees less precipitation, totaling 52 mm (2.0 in) over about 5 days, and the humidity is at a moderate 66%. In contrast, October brings cooler temperatures with a minimum of 6°C (42°F) and a maximum of 22°C (72°F), averaging 13°C (55°F). This month experiences more rainfall, with approximately 74 mm (2.9 in) spread over 9 days and higher humidity at 77%. For more detailed insights, you can visit Bandon weather in October.

September and November exhibit notable differences in weather patterns. September enjoys milder temperatures, with averages around 15°C (59°F) and maximums reaching up to 29°C (84°F), while November's temperatures drop significantly, with averages of 11°C (52°F) and highs of only 18°C (65°F). Additionally, September experiences relatively low precipitation of 52 mm (2.0 inches) over about 5 days, contrasting sharply with November's much wetter climate, totaling 162 mm (6.4 inches) over 13 days. Humidity also rises from 66% in September to a more pronounced 87% in November, indicating a shift toward a chillier and wetter atmosphere. For detailed insights, you can check Bandon weather in November.

The weather in September showcases a broader temperature range, with minimums around 9°C (48°F) and maximums reaching up to 29°C (84°F), resulting in an average of 15°C (59°F). In contrast, December brings cooler temperatures, with minimums dropping to 2°C (37°F) and a maximum of only 16°C (61°F), leading to an average temperature of 9°C (49°F). Additionally, September experiences moderate precipitation of 52 mm (2.0 in) over about 5 days, while December is significantly wetter, receiving 226 mm (8.9 in) over 17 days, along with increased humidity at 87%. For more detailed insights about the December climate, check Bandon weather in December.

Compare Bandon's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Bandon

In September, Bandon experiences a delightful transition from the warm summer months, with temperatures reaching maximums of 29°C and a comfortable average hovering around 15°C. The cooler nights bring refreshing air, dipping to around 9°C. While this month sees an average of 52 mm of precipitation over just five days, the overall humidity of 66% contributes to a pleasantly mild atmosphere, setting September apart from the wetter and cooler autumn months ahead. This unique blend of warmth and occasional rain makes it an ideal time to explore the coastal beauty of Bandon. For more detailed insights on the region, check out Bandon Climate.