Last updated: August 21, 2025
September in Marsh Harbour, Bahamas offers a warm tropical climate characterized by an average temperature of 28°C (82°F), with highs peaking at 30°C (86°F) and lows around 25°C (77°F). This month experiences notable precipitation, totaling approximately 200 mm (7.9 in) over 19 days, leading to a notably humid environment with an average humidity of 78%. Travelers should prepare for the moisture-laden air and potential rain, while still enjoying the tropical allure of this stunning destination.
In September, Marsh Harbour, Bahamas, enjoys warm tropical temperatures that perfectly embody the summer vibe. With minimum temperatures around 25°C (77°F), the weather remains pleasantly warm, making it a great choice for sun-seekers. The average temperature hovers at 28°C (82°F) and peaks with max readings reaching 30°C (86°F), reflecting the month's characteristic heat. Notably, September marks the tail end of summer's heatwave, following the slightly cooler months of June and August, establishing a trend of warmth that lingers before the temperatures gradually begin to drop in October. This ideal climate offers the perfect backdrop for beachside relaxation and outdoor adventures, as the sunshine continues to reign supreme.
September marks a notable peak in precipitation for Marsh Harbour, Bahamas, with an impressive 200 mm (7.9 in) of rainfall spread over 19 days. This considerable increase from the preceding months highlights September as the wettest period of the year, following a summer marked by substantial rainfall in July and August, which averaged around 104 mm (4.1 in). The trend of escalating precipitation during these months suggests a shift toward more significant rain events as summer transitions into fall, making it essential for residents and visitors to prepare for frequent showers. As the dry season approaches in October, where precipitation drops to 133 mm (5.2 in), September stands out as a lush culmination of the wet, tropical summer.
In Marsh Harbour, Bahamas, September brings a slight dip in humidity, settling at 78%—a comfortable pause in the otherwise consistent trend throughout the year. From a high of 80% in January and February, the humidity gradually decreases to a low of 77% from June to August before inching back up slightly in September. This month typically marks a transition, as the end of summer approaches, and is part of a pattern where humidity gently rises again into the late fall, reaching 80% in November. Overall, September's humidity reflects the region's tropical climate, offering a moment of respite while still retaining that signature warmth and moisture that defines the Bahamian experience.
In September, Marsh Harbour experiences a UV Index of 11, maintaining the extreme exposure category that has dominated the summer months. This slight dip from the peak levels of 12 observed from June to August does little to ease the risk of sunburn, with a burn time of just 10 minutes remaining critical for sun safety. As the year transitions to October, we will see a gradual reduction in intensity, with the UV Index falling to 10. It's important to stay vigilant, even as the days become shorter; the high UV ratings throughout the year highlight the need for protective measures against harmful rays. For more detailed information on UV levels throughout the year, check out Marsh Harbour UV Index.
UV Risk Categories
As summer gently fades into autumn, September in Marsh Harbour, Bahamas continues to bask in abundant sunshine, boasting 314 hours of sunlight. This month experiences a modest decline from the peak of 355 hours in July, yet it retains a vibrant glow—far surpassing the winter months that follow. The sunny trend remains firmly established from April to August, where sunshine hours consistently exceed 300 hours, enriching the tropical charm of the islands. With sweet sunshine lingering, September offers a serene backdrop for relaxation and exploration before the cooler months set in.
In Marsh Harbour, Bahamas, the likelihood of enjoying sunny weather fluctuates throughout the year, with September presenting a moderate 49% chance of clear skies. Following the summer months, which typically see lower probabilities of sunshine, September mirrors the trends of both April and May, maintaining a balance between sun and cloud cover. As the year transitions into autumn, the prospect of sunshine in September maintains a steady presence, offering visitors a pleasant environment for outdoor activities. While not the sunniest month, it still holds its own, suggesting a delightful mix of sunny days and cooler breezes as the island shifts from the heat of summer.
As summer wanes in Marsh Harbour, Bahamas, September welcomes a subtle shift in daylight, offering about 12 hours of sunshine each day. This marks a transition from the peak of 13 hours enjoyed during the summer months of June through August, highlighting the region's vibrant summer brightness. Following this, daylight gradually declines, returning to 11 hours in October and 10 hours by the time December arrives. Overall, September serves as a gentle bridge between the sun-soaked days of summer and the shorter days of autumn, allowing residents and visitors to savor the lingering warmth and beauty of the Bahamian sun.
As summer gives way to autumn in Marsh Harbour, September experiences a notable dip in average wind speed, dropping to just 3.4 m/s (8 mph). This marked decrease contrasts sharply with the more robust breezes of the earlier months, where the winds typically hovered around 5 to 7.3 m/s. Following the peak summer months of July and August, which registered 5.4 m/s and 5.5 m/s respectively, September’s gentle winds create a serene atmosphere, ideal for leisurely beach days and tranquil sunsets. While the winds pick up again in October, returning to a more typical range of 5.4 m/s, September serves as a gentle reminder of the calm before the seasonal transition, inviting both locals and visitors to embrace the stillness of the Bahamian shores.
Weather in Marsh Harbour varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Marsh Harbour, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is notably warmer and more humid, with average temperatures around 28°C (82°F) and frequent rainfall, totaling 200 mm (7.9 in) over about 19 days. The high humidity of 78% often makes it feel even hotter. In contrast, January brings a cooler and drier climate, with average temperatures dropping to 22°C (72°F) and only 60 mm (2.4 in) of precipitation over just 7 days. The humidity also remains high at 80%, but the lower temperatures provide a more comfortable atmosphere. For a detailed look at January weather, you can check Marsh Harbour weather in January.
September and February exhibit distinct weather patterns, highlighting the transition from late summer to early winter. September typically enjoys warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at a maximum of 30°C (86°F). However, it also brings significant rainfall, averaging 200 mm (7.9 in) over 19 days, combined with a humidity level of 78%. In contrast, February presents cooler conditions, with a minimum of 15°C (60°F) and an average of 23°C (73°F), reaching a maximum of 25°C (77°F). The precipitation in February is notably lower at 50 mm (2.0 in) over just 8 days, while humidity increases slightly to 80%. For more detailed weather insights, check out Marsh Harbour weather in February.
When comparing the weather in September and March, notable differences emerge. September is significantly warmer, with average temperatures reaching 28°C (82°F), peaking at 30°C (86°F), while March sees cooler temperatures, averaging 22°C (73°F) with a maximum of 26°C (78°F). Additionally, September experiences a much higher level of precipitation, with 200 mm (7.9 in) spread across 19 days, compared to March's 53 mm (2.1 in) over just 7 days. Humidity levels are slightly similar, with September at 78% and March at 79%. For more specific details, you can refer to Marsh Harbour weather in March.
In September, temperatures are notably warmer, with a minimum of 25°C (77°F) and an average of 28°C (82°F), compared to April's cooler temperatures, which have a minimum of 19°C (66°F) and an average of 24°C (75°F). While September experiences more precipitation, with 200 mm (7.9 in) over 19 days, April sees significantly less rain at 66 mm (2.6 in) across only 11 days. Humidity levels remain similar, with September at 78% and April slightly lower at 77%. For more detailed insights into April's climate, visit Marsh Harbour weather in April.
September and May exhibit distinct weather characteristics. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), with an average of 28°C (82°F). This month is marked by higher precipitation, averaging 200 mm (7.9 in) over approximately 19 days, contributing to an overall humidity of 78%. In contrast, May experiences milder temperatures, with a minimum of 21°C (71°F) and a maximum of 28°C (82°F), resulting in an average of 25°C (77°F). Precipitation is significantly lower in May, at about 100 mm (3.9 in) over 12 days, while humidity remains similar at 79%. For more details, you can check Marsh Harbour weather in May.
In comparing the weather of September and June, September tends to be warmer with average temperatures reaching 28°C (82°F), slightly higher than June's average of 27°C (80°F). Both months share the same maximum temperature of 30°C (86°F); however, September experiences significantly more rainfall, with 200 mm (7.9 in) compared to June's 84 mm (3.3 in). Additionally, September is characterized by precipitation occurring on 19 days, while June has about 16 days of rain. Humidity levels remain fairly similar, with September at 78% and June at 77%. For more specific details about June weather in that region, you can check out Marsh Harbour weather in June.
In both July and September, temperatures remain quite consistent, with minimums around 25°C (77°F) and average highs of 28°C (82°F) in July and slightly higher at 30°C (86°F) in September. However, September sees a significant increase in precipitation, totaling 200 mm (7.9 in) across 19 days, compared to July's 104 mm (4.1 in) over 18 days. Humidity levels are also similar, hovering around 78% in September and 77% in July. If you're interested in more detailed weather patterns specific to July, you can check out Marsh Harbour weather in July.
In comparing the weather between August and September, both months share similar temperature ranges, with minimums around 25°C (77°F) and maximums near 30°C (86°F). However, September experiences significantly higher precipitation, totaling 200 mm (7.9 in) over 19 days, compared to August's 105 mm (4.1 in) across 18 days. Humidity levels remain relatively consistent, with September slightly higher at 78% versus August's 77%. For a detailed look at August's weather patterns, you can visit this link: Marsh Harbour weather in August.
In September, the weather is characterized by warmer temperatures, with a minimum of 25°C (77°F) and an average high of 30°C (86°F). This month also experiences significant rainfall, with approximately 200 mm (7.9 in) of precipitation over 19 days, maintaining high humidity levels of 78%. In contrast, October sees a slight drop in temperatures, with minimums around 22°C (72°F) and an average maximum of 29°C (84°F). Precipitation decreases to 133 mm (5.2 in) over 18 days, while humidity remains consistent at 78%. For more detailed insights, you can visit Marsh Harbour weather in October.
September weather is characterized by warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), reaching a maximum of 30°C (86°F). In addition, it experiences significant rainfall, totaling 200 mm (7.9 in) over 19 days, and humidity levels remain high at 78%. In contrast, November sees cooler temperatures, with a minimum of 20°C (67°F) and an average of 25°C (77°F), peaking at 27°C (82°F). There is also less rainfall in November, with 104 mm (4.1 in) falling over 14 days, alongside a slight increase in humidity to 80%. For a more detailed look at the conditions in November, you can visit Marsh Harbour weather in November.
In September, the weather is notably warmer with minimum temperatures around 25°C (77°F) and an average of 28°C (82°F). The month experiences significant rainfall, with precipitation totaling 200 mm (7.9 in) over 19 days, contributing to a humidity level of 78%. In contrast, December brings cooler temperatures—minimums drop to 17°C (62°F) with an average of 23°C (74°F) and a maximum of 27°C (80°F). Rain is much less common during this month, with only 48 mm (1.9 in) falling over 8 days, and humidity slightly increases to 81%. For a more detailed look at December weather, you can check out Marsh Harbour weather in December.
As summer transitions into fall, September brings a unique blend of warmth and humidity to Marsh Harbour. With average temperatures hovering around a balmy 28°C (82°F), the month feels quite tropical, especially with a noticeable humidity level of 78%. However, September also marks a period of increased rainfall, witnessing significant precipitation over numerous days, which contrasts with the drier summer months. This combination makes September distinctively lush and vibrant, albeit a bit wetter. For a deeper insight into how September weather compares to other times of the year, explore more at Marsh Harbour Climate.