Last updated: February 24, 2025
September in South Haven, United States, offers a comfortable blend of warm days and cool evenings. The maximum temperature peaks at a pleasant 27°C (82°F), while the average hovers around 19°C (67°F), providing ideal conditions for outdoor activities. As the month progresses, the evenings can dip to a refreshing 9°C (48°F), making a light jacket a wise choice. With precipitation totaling 86 mm (3.4 in) over 11 days, light rain is a common occurrence, contributing to the lush landscapes. The month is characterized by high humidity levels at 79%, creating a slightly muggy atmosphere, especially after rainfall. Overall, September in South Haven is perfect for enjoying the transition from summer to autumn!
In South Haven, United States, September marks a delightful transition into early autumn, characterized by mild temperatures that invite both outdoor exploration and cozy indoor activities. With minimums averaging around 9°C (48°F) and maximums soaring up to 27°C (82°F), the month presents a comfortable range that is perfect for enjoying the crisp air and the changing foliage. The average temperature of 19°C (67°F) strikes a balance that feels both refreshing and pleasant, making it a favorite for locals and visitors alike. As the summer heat begins to wane, the gradual shift offers a beautiful backdrop for walks along the beaches and vibrant sunsets over Lake Michigan, highlighting the charm of South Haven in this picturesque season.
In September, South Haven experiences a moderate level of precipitation, averaging 86 mm (3.4 in) over approximately 11 days of rain. This amount aligns closely with the wetter months at the beginning of the year, such as January and February, while showing a noticeable decline from the peak seen in May and June. The trend indicates that as summer transitions into fall, the rainfall begins to stabilize, resulting in a more balanced distribution of precipitation. This seasonal shift not only fosters a vibrant natural environment but also lays the groundwork for the increased rainfall that October brings, with its 165 mm (6.5 in) marking the start of the autumn deluge.
In September, South Haven experiences a mild humidity level of 79%, marking a subtle dip from the summer months. This trend reflects a gradual shift as the region transitions from the sultry heat of July and August, which see humidity levels around 78% and 79% respectively. As autumn sets in, the humidity begins to climb again in October, rising to 82%. Overall, the data suggests that while September remains relatively humid, it signals the start of a cooler season, where moisture levels start balancing out, easing into the crisper air of fall.
In September, South Haven experiences a UV Index of 7, categorizing it as high exposure. This marks a slight decline from the peak summer months of July and August, where the index reached a maximum of 10. With the burn time extending to 25 minutes, it’s essential to remain vigilant about sun protection as fall approaches. Notably, the UV Index mirrors the trend of decreasing exposure as the year progresses, transitioning from the very high levels seen in summer to more moderate values in the subsequent months. For those looking to enjoy the last warm days of the season, awareness of the UV Index is key. To learn more about the UV trends in South Haven, visit South Haven UV Index.
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September in South Haven, United States, glows with approximately 290 hours of sunshine, making it a delightful month to savor the lingering warmth of summer. As the year progresses, the sunshine hours peak in the summer months, with July claiming the crown at 363 hours, followed closely by June and August. This sunny trend begins to taper off in the fall, yet September still offers a generous amount of sunlight, acting as a bridge between the sizzling summer and the cooler days of October. With 215 hours of sunlight in October, the gradual decline continues into the winter months, showcasing nature's rhythm as sunlight ebbs and flows throughout the year. Enjoying September's sunshine is a perfect reminder of the joys of summer as the season starts to transition.
As summer transitions into autumn, the likelihood of enjoying sunny weather in South Haven, United States, sees a notable uptick in September. With a 56% chance of sunshine, this month stands out as one of the most favorable for sun-seekers, showing a steady increase from the previous months. This rise is particularly significant compared to the average chance of sunshine in the early months of the year, which hovers below 50%. September’s sunny disposition not only invites locals and tourists to bask in the outdoors but also suggests a delightful closing chapter to the summer season, making it a prime time for outdoor activities before the cooler months set in.
As September arrives in South Haven, the daylight begins to subtly wane, offering approximately 12 hours of sunlight each day. This marks a gentle decline from the peak of 15 hours seen in June, as summer transitions into fall. The gradual shift is part of a larger trend where daylight hours steadily increase from the deep winter months in January and February, reaching a maximum in the vibrant days of May and June, before embarking on a slow descent into the shorter days of autumn and winter. The rhythm of daylight in South Haven beautifully encapsulates the changing seasons, inviting both reflection and appreciation of the natural cycle.
As September rolls in South Haven, the average wind speed climbs back to a refreshing 5.2 m/s (12 mph), reminiscent of the breezy days earlier in the year. After a noticeable dip during the summer months, where the winds slowed to 3.5 m/s (8 mph) in August, this resurgence signals a seasonal transition. The wind picks up again, aligning with the approach of autumn, and sets the stage for more invigorating conditions. This trend of fluctuating winds highlights the dynamic nature of South Haven's climate, with October following closely at 5.0 m/s (11 mph), while November and December ramp up even further, showcasing winds of 6.7 m/s (15 mph) and 6.5 m/s (15 mph) respectively. Thus, September acts as a pivotal bridge, reintroducing lively breezes that hint at the spirited gusts of the colder months ahead.
The weather in South Haven 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 South Haven and find detailed weather information for every month.
In September, the weather is considerably milder, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (82°F) and an average of 19°C (67°F). This month experiences around 86 mm (3.4 in) of precipitation over 11 days, and humidity levels hover around 79%. In contrast, January brings a stark chill, with temperatures plummeting to a minimum of -22°C (-7°F) and only reaching a maximum of 10°C (50°F), averaging -2°C (29°F). Precipitation slightly decreases to 85 mm (3.3 in), but over 15 days, while humidity edges up to 87%. For more detailed information about the winter conditions, visit South Haven weather in January.
September and February present strikingly contrasting weather conditions. In September, temperatures range from a mild 9°C (48°F) at night to a warm average of 19°C (67°F) during the day, peaking at 27°C (82°F). This month experiences a moderate amount of precipitation with 86 mm (3.4 in) distributed over about 11 days, accompanied by a relatively high humidity of 79%. In contrast, February is much colder, with temperatures plummeting to a minimum of -16°C (4°F) and an average temperature of -2°C (29°F), reaching a maximum of only 11°C (52°F). Despite the same amount of precipitation (86 mm or 3.4 in), February sees it spread across 15 days, and humidity is slightly higher at 87%. For a closer look at February conditions, you can visit South Haven weather in February.
Comparing the weather in September and March reveals notable contrasts. September boasts milder temperatures, with averages reaching up to 19°C (67°F) and highs of 27°C (82°F), while March struggles with much cooler averages of around 2°C (36°F) and a maximum temperature of only 16°C (61°F). Although both months experience a similar amount of precipitation, with September at 86 mm (3.4 in) and March slightly lower at 81 mm (3.2 in), March tends to be rainier, with precipitation occurring over 13 days compared to September's 11 days. Additionally, March has a higher humidity level at 86%, compared to September's 79%. For a detailed look at March weather, you can refer to South Haven weather in March.
September and April present quite contrasting weather conditions. In September, temperatures are generally milder, with minimums around 9°C (48°F) and maximums reaching up to 27°C (82°F), providing a pleasant average of 19°C (67°F). The precipitation level is moderate at 86 mm (3.4 in) across approximately 11 days, with humidity hovering around 79%. In contrast, April experiences much cooler temperatures, starting as low as -4°C (25°F) and averaging only 5°C (42°F), though it can rise to a comfortable 20°C (68°F). This month sees a slightly higher precipitation of 107 mm (4.2 in) over 13 days, accompanied by a bit more humidity at 87%. For a more detailed look at April weather, you can visit South Haven weather in April.
In comparing the weather of September and May, September generally boasts warmer temperatures, with an average of 19°C (67°F) and a maximum reaching up to 27°C (82°F), while May sees a cooler average of 11°C (53°F) and a maximum of 26°C (80°F). Precipitation is notably higher in May, with 142 mm (5.6 in) falling over 14 days compared to September's 86 mm (3.4 in) spread over 11 days. Both months have similar humidity levels, hovering around 79% in September and slightly higher at 82% in May. For further details on May weather, you can check South Haven weather in May.
In comparing the weather between September and June, we see notable differences in temperature and precipitation. September tends to have a slightly wider range of temperatures, with averages reaching up to 27°C (82°F) compared to June's maximum of 26°C (79°F). The minimum temperatures are quite similar, with September starting at 9°C (48°F) and June at 10°C (50°F). Precipitation is higher in June, measuring 127 mm (5.0 in) over 12 days, while September receives 86 mm (3.4 in) over 11 days, indicating a drier month. Additionally, both months experience similar humidity levels, with September at 79% and June slightly higher at 81%. For a closer look at the weather specifics for June, you can refer to South Haven weather in June.
In comparing the weather between September and July, September tends to be cooler, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (82°F) and an average of 19°C (67°F). In contrast, July offers warmer conditions, with temperatures ranging from 16°C (60°F) to 28°C (83°F) and an average of 22°C (72°F). Both months experience similar levels of precipitation, with September receiving about 86 mm (3.4 in) over 11 days, while July sees slightly less at 80 mm (3.2 in) over 10 days. Humidity levels are quite comparable, with September at 79% and July at 78%. For more detailed insights, you can visit South Haven weather in July.
In September, temperatures begin to cool down slightly, with a minimum of 9°C (48°F) compared to August's warmer minimum of 14°C (58°F). The average temperature drops from August's 22°C (72°F) to 19°C (67°F) in September, while the maximum temperature remains similar, peaking at 27°C (82°F) in September and 28°C (83°F) in August. Precipitation increases in September, totaling 86 mm (3.4 in) over 11 days, compared to 63 mm (2.5 in) over 10 days in August. Interestingly, the humidity levels remain constant at 79% during both months, contributing to a persistent feeling of warmth even as the season transitions. For more details on August weather specifics, you can check South Haven weather in August.
September tends to offer warmer temperatures, with averages hovering around 19°C (67°F) and peaks reaching up to 27°C (82°F). In contrast, October sees a significant drop in the average temperature to 13°C (56°F), with minimums falling to 3°C (37°F). Additionally, October experiences more precipitation, totaling 165 mm (6.5 in) over 17 days, compared to September's 86 mm (3.4 in) over 11 days. The humidity remains relatively high in both months, with October slightly edging out at 82% compared to September's 79%. For more detailed information on what to expect, check out South Haven weather in October.
September and November exhibit significantly different weather patterns. In September, temperatures range from a mild 9°C (48°F) at night to a warm 27°C (82°F) during the day, with an average of 19°C (67°F). The month sees an average precipitation of 86 mm (3.4 in) across 11 days, and humidity levels are relatively moderate at 79%. In contrast, November is much colder, with temperatures dropping to a minimum of -6°C (21°F) and only reaching a maximum of 18°C (66°F), averaging around 5°C (42°F). With precipitation slightly higher at 89 mm (3.5 in) and occurring over 13 days, November also experiences increased humidity at 87%. For more detailed information, you can check South Haven weather in November.
In comparing the weather of September and December, a stark contrast is evident. September experiences mild temperatures, ranging from a cool minimum of 9°C (48°F) to a warm maximum of 27°C (82°F), with an average temperature of 19°C (67°F). The month sees about 86 mm (3.4 in) of precipitation over 11 days, and the humidity averages around 79%. In contrast, December brings much colder conditions, with temperatures plummeting to a minimum of -13°C (9°F) and an average of just 2°C (36°F). The maximum temperature reaches only 14°C (57°F), and despite slightly lower precipitation at 83 mm (3.3 in) over 13 days, the humidity rises to 86%. For more detailed insights on December weather, please refer to South Haven weather in December.
As summer transitions to fall, September in South Haven offers a delightful balance of warmth and coolness, setting it apart from the hotter summer months. With average temperatures hovering around a comfortable 19°C (67°F) and maximums reaching up to 27°C (82°F), outdoor enthusiasts can still enjoy the pleasant weather. However, the increased humidity and notable precipitation—spreading over 11 days—hint at the changing seasons. This month serves as a beautiful bridge, with more frequent rain providing a lush backdrop, making it a unique time to experience South Haven's natural beauty. For a more detailed view on the weather patterns throughout the year, visit South Haven Climate.