Last updated: August 21, 2025
In September, Nassau, Bahamas experiences warm tropical weather characterized by an average temperature of 28°C (82°F), with daily highs reaching up to 30°C (86°F) and lows around 25°C (77°F). This month's climate is marked by high humidity at 78%, creating a sultry atmosphere that complements the vibrant local life. Precipitation is significant, with 154 mm (6.1 in) of rainfall over approximately 19 days, making it essential for visitors to prepare for occasional downpours. Despite the rain, September remains a captivating time to explore Nassau's stunning landscapes and rich culture.
In September, Nassau, Bahamas, experiences warm and inviting temperatures that typify its tropical climate. With a minimum of 25°C (77°F) and a maximum reaching 30°C (86°F), the month maintains a steady average of 28°C (82°F). This consistency marks September as a continuation of the summer warmth seen in the preceding months, such as July and August, where highs also flirt with the 30°C mark. As the season shifts, temperatures begin to ease slightly, hinting at the cooler months ahead, yet the lingering heat still invites beachgoers and sun seekers to indulge in the stunning coastal scenery of this vibrant island paradise.
In September, Nassau, Bahamas experiences a significant spike in precipitation, accumulating 154 mm (6.1 in) of rain over 19 days. This marks one of the wettest months of the year, reflecting the peak of the hurricane season. Compared to the drier months at the beginning of the year, such as March with only 21 mm (0.8 in), September's rainfall is a stark reminder of the region's tropical climate. The trend shows a sharp increase from August's 115 mm (4.5 in), indicating that summer transitions into autumn with heightened moisture levels. As the month progresses, locals and visitors alike should be prepared for the frequent showers that characterize this time, while also enjoying the lush, vibrant landscapes the rain nourishes.
In September, Nassau, Bahamas experiences a humidity level of 78%, characteristic of a slight decline from the peak summer months. This trend reflects a gradual easing in moisture, as July and August also hover around 77-78%. The humidity in September aligns closely with the lower end of the spring months, providing a subtle transition toward the drier season ahead. As the year progresses, Nassau sees a slight uptick again in November and December, suggesting a return to more humid conditions as winter approaches. Overall, September stands out as a month of balance, maintaining comfortable levels while hinting at the changes to come.
As autumn approaches in Nassau, Bahamas, September continues the trend of intense sunshine with a UV Index of 12, categorizing exposure as extreme. This level of intensity underscores the importance of sun safety, as the burn time is a swift 10 minutes—a stark reminder that even brief outdoor activities can lead to skin damage without proper protection. Following a summer filled with equally high UV levels, from 12 to 13, September maintains this aggressive threshold, reinforcing the need for sunblock and protective clothing. As the year progresses into October, a slight dip in the UV Index to 10 signals a gradual easing, yet it remains crucial to stay vigilant. For more information on UV levels year-round, visit Nassau UV Index.
UV Risk Categories
As summer transitions into fall, September in Nassau, Bahamas continues to bask in abundant sunshine, boasting an impressive 314 hours of sunlight. This delightful month stands out as it follows the peak summer months, with July and August reaching highs of 358 and 348 hours, respectively. While the sunlight slightly dims compared to the summer's golden glow, September still shines brighter than the earlier months of the year, consistently showcasing a trend of increasing sunlight from January's humble 216 hours to its late summer zenith. The gradual decline into October, with 310 hours, signals the onset of autumn while maintaining a generous amount of sunshine that invites visitors to enjoy the warm, inviting beaches and vibrant local culture.
September in Nassau, Bahamas, offers a moderate 50% chance of sunny weather, marking it as a transitional month between the summer heat and the upcoming autumn. This likelihood is notably higher than the summer months of June (30%), July (47%), and August (44%), hinting at an improvement in sunshine as the season shifts. When compared to the earlier months, September's sun exposure is on par with May (55%) and better than April (54%), providing a balanced opportunity for visitors to enjoy the island's stunning beaches. As you plan your visit, September presents a fair chance to bask in the sun amidst the vibrant Caribbean backdrop.
As September unfolds in Nassau, Bahamas, visitors can enjoy 12 hours of daylight, maintaining a comfortable balance as summer transitions to fall. This month reflects a stabilization in daylight hours, consistent with the trend observed since May when the days peaked at 13 hours. Following the invigorating summer, daylight begins to taper off slightly in October, leading to shorter days ahead. The gradual shift in September serves as a gentle reminder of the impending seasonal changes, but for now, it invites both locals and travelers to bask in the warm sun and explore the island's vibrant beauty under its ample light.
As September arrives in Nassau, Bahamas, the gentle caress of the winds reveals a notable shift, with average wind speeds dipping to 3.3 m/s (7 mph)—the lowest of the year. This tranquil breeze marks a transition from the previous summer months, where winds averaged between 5.6 m/s (12 mph) and 6.3 m/s (14 mph). The calmness of September invites a more serene experience, allowing visitors to soak in the beauty of the island at a leisurely pace. Following this lull, the winds pick up again in October, creating an ideal setting for those seeking adventure on the water. The evolving wind patterns throughout the year beautifully encapsulate the dynamic climate of Nassau, ensuring every season brings its own unique charm.
Weather in Nassau varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nassau, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather in Nassau is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), often peaking at 30°C (86°F). The month experiences significant rainfall, totaling 154 mm (6.1 in) over 19 days, and humidity levels hover around 78%. In contrast, January brings cooler temperatures, with a minimum of 16°C (61°F) and an average of 23°C (73°F), reaching a maximum of 26°C (79°F). Rainfall is considerably less during this month, with only 40 mm (1.6 in) over 8 days, while humidity slightly increases to 80%. To learn more about Nassau’s weather in January, visit Nassau weather in January.
September and February exhibit notable differences in weather patterns. September tends to be warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), while February sees cooler temperatures, peaking at 25°C (78°F) with a minimum of 17°C (63°F). Additionally, September is much wetter, receiving 154 mm (6.1 in) of rain over 19 days, compared to February's relatively dry climate with only 32 mm (1.3 in) of precipitation over 7 days. Humidity levels remain fairly similar, peaking at 78% in September and slightly higher at 81% in February. For a detailed look at February weather, you can visit Nassau weather in February.
In comparing the weather between September and March, it's clear that September is significantly warmer and more humid. With average temperatures of around 28°C (82°F) and high humidity levels at 78%, September experiences a greater warmth and a noticeable amount of rainfall, totaling 154 mm over 19 days. In contrast, March presents a milder climate, with average temperatures of 23°C (74°F), a much lower precipitation level of just 21 mm over 5 days, and slightly higher humidity at 80%. For a more detailed look at March weather, you can check out Nassau weather in March.
When comparing the weather in September and April, we observe notable differences in temperature and precipitation. September averages a warmer temperature, with a minimum of 25°C (77°F) and maximum reaching 30°C (86°F), while April's temperatures are more moderate, ranging from a minimum of 20°C (69°F) to a maximum of 28°C (83°F). Additionally, September experiences significantly higher rainfall, with 154 mm (6.1 in) spread over 19 days, compared to April's 49 mm (1.9 in) across just 9 days. Despite the humidity levels remaining consistent at 78% in both months, the overall climate in September feels much wetter and warmer. For more detailed information on April weather, you can check Nassau weather in April.
In comparing the weather of September and May, both months exhibit similar humidity levels of 78%. However, September tends to be warmer, with minimum temperatures of 25°C (77°F) and average highs reaching 30°C (86°F), compared to May's minimum of 22°C (72°F) and a maximum of 28°C (83°F). Additionally, rainfall is slightly higher in September, accumulating 154 mm (6.1 inches) over 19 days, whereas May experiences 157 mm (6.2 inches) over 14 days. For more information, you can check this link: Nassau weather in May.
In comparing the weather of September and June, we find that both months experience warm temperatures, with September slightly warmer, averaging 28°C (82°F) compared to June's average of 27°C (81°F). September also sees a greater maximum temperature at 30°C (86°F) versus June's 29°C (85°F). However, while temperatures are quite close, September is notably wetter, receiving 154 mm (6.1 in) of precipitation over 19 days, contrasted with June's 84 mm (3.3 in) over 17 days. Humidity levels are similar, with September at 78% and June at 77%. For a deeper look into June weather specifics, you can visit Nassau weather in June.
In comparing the weather of September and July, we note that both months share similar temperature ranges, with minimums at 25°C (77°F), averages around 28°C (82°F), and maximums hitting 30°C (86°F). However, September experiences significantly higher precipitation, recording 154 mm (6.1 in) over the month compared to July's 105 mm (4.1 in). Additionally, September sees rain on about 19 days, slightly more than July's 18 days, and both months maintain a similar level of humidity, with September at 78% and July at 77%. For more detailed information, you can check out Nassau weather in July.
In comparing the weather of September to that of August, both months share similar temperature patterns, with minimums around 25°C (77°F), average temperatures near 28°C (82°F), and maximums peaking at 30°C (86°F). However, September experiences higher precipitation, accumulating 154 mm (6.1 inches) over 19 rainy days, compared to August's 115 mm (4.5 inches) over 17 days. Despite the increased rainfall, humidity levels remain consistent at 78% for both months. For a detailed look at August weather, you can refer to Nassau weather in August.
In September, the weather features slightly warmer temperatures with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum of 30°C (86°F). The month experiences significant rainfall, totaling 154 mm (6.1 in) over 19 days, while humidity remains relatively high at 78%. In contrast, October sees a slight dip in temperature, with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 29°C (84°F). While precipitation decreases to 145 mm (5.7 in) spread over 20 days, humidity levels remain constant at 78%. For more details on October weather, you can check Nassau weather in October.
In September, the weather tends to be warmer and more humid, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F). During this month, Nassau experiences significant rainfall, averaging 154 mm (6.1 in) over 19 days, resulting in a humidity level of around 78%. In contrast, November brings slightly cooler temperatures, with averages dropping to a minimum of 21°C (69°F) and a maximum of 28°C (83°F). Precipitation decreases notably to 64 mm (2.5 in) over just 11 days, while humidity remains high at 80%. For more detailed information, check out Nassau weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), reaching up to a maximum of 30°C (86°F). The month also sees considerable rainfall, with 154 mm (6.1 in) of precipitation over 19 days, and humidity levels at 78%. In contrast, December brings milder conditions, featuring a minimum temperature of 18°C (64°F) and an average of 24°C (75°F), peaking at 26°C (80°F). The precipitation drops significantly to 44 mm (1.7 in) over just 8 days, while humidity rises slightly to 81%. For a deeper look into December weather specifics, you can explore Nassau weather in December.
As September rolls into Nassau, the weather is characterized by warm temperatures and a notable increase in humidity, making it feel more tropical compared to the drier summer months. While the average temperature remains comfortably warm, the higher likelihood of rain—with nearly two-thirds of the days experiencing precipitation—distinguishes this month from the typically sunnier July and August. Visitors should be prepared for occasional showers amidst the heat, as the island's lush landscapes thrive under September's wet conditions. For a deeper dive into Nassau's weather patterns throughout the year, check out the full details on Nassau Climate.