Last updated: August 21, 2025
September in Santo Domingo, Dominican Republic, offers a blend of warmth and occasional rain, making it a month of vibrant weather. With maximum temperatures reaching 35°C (95°F) and an average of 27°C (81°F), visitors can expect tropical heat, while minimum temperatures hover around a comfortable 22°C (72°F). However, prepare for 107 mm (4.2 in) of rain spread across approximately 21 days, contributing to a high humidity level of 73%. This combination creates a lush environment, perfect for exploring the city’s rich culture and natural beauty, while the rain provides a refreshing break from the heat.
In September, Santo Domingo experiences some of its warmest temperatures of the year, with daily averages reaching 27°C (81°F) and maximums peeking at a sweltering 35°C (95°F). This month marks a continuation of the summer heat, as it builds upon the warm trends seen in July and August, where highs also soared to 34°C (93°F). Notably, September features a minimum temperature of 22°C (72°F), ensuring that even the cooler moments of the day remain pleasantly warm. Overall, as summer transitions toward fall, visitors can expect a tropical warmth that makes this vibrant city a lively destination, while also keeping in mind the occasional sun-soaked day that comes with such heat.
September in Santo Domingo marks a notable transition in the rainfall pattern, with precipitation reaching 107 mm (4.2 in) over approximately 21 days. This aligns closely with August's rainfall, which is the wettest month of the year, but September sees a slight dip in precipitation intensity. The steady rainfall continues to suggest the lingering influence of the Atlantic hurricane season. As the month progresses, residents experience a rhythmic pattern of showers that contribute to the lushness of the region, offering a vibrant contrast to the sun-soaked days that dominate the summer months. Overall, September exemplifies the tropical climate's tendency towards moisture, while hinting at the drier spell that follows in October and beyond.
In September, humidity levels in Santo Domingo rise to a notable 73%, marking the peak of the year. This increase follows a persistent upward trend, beginning in August when humidity reaches 71%, and contrasting with the drier months earlier in the year, where percentages hover around the mid to high 50s. As the summer gives way to fall, the city's air becomes increasingly humid, reflecting the tropical climate's characteristic shifts. Following September, humidity begins to slightly decline to 72% in October and November, but remains relatively high throughout the transition into winter, indicating a moist environment that is both typical and comforting for the region.
As September rolls into Santo Domingo, the UV Index remains a striking 13, placing it firmly in the extreme exposure category, with a burn time of just 10 minutes for unprotected skin. This trend persists from the summer months, where the UV Index has consistently reached the same high levels. Notably, both July and August also recorded a UV Index of 13, indicating that the Dominican Republic experiences intense sunlight during these late summer and early fall months. As we transition into October, a slight dip to 11 occurs, but still maintains the extreme category. For those looking to enjoy the island's beauty, vigilance against the sun's rays is essential throughout September. For more detailed information, check the Santo Domingo UV Index.
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September in Santo Domingo, Dominican Republic, offers a delightful blend of warmth and sunshine, with 308 hours of sunlight brightening the month. This follows a vibrant summer, where July and August bask in 347 and 336 hours of sun, respectively. The trend shows a slight decline as the year progresses into autumn, marking September as a transitional period that still boasts abundant daylight compared to the cooler months ahead. As the year winds down, sunlight gradually decreases, but September remains a beautiful time to soak up the sun’s rays before embracing the more subdued light of October and November. The consistent sunny climate throughout the year makes Santo Domingo a charming destination for those seeking warmth and vibrant energy even as summer wanes.
In September, Santo Domingo typically enjoys a 49% chance of sunny weather, reflecting a slight dip in clarity as the summer months transition to fall. This percentage places September on par with April and October, showcasing a more balanced weather pattern after the intense heat and humidity experienced in the preceding months. While early parts of the year, particularly February and March, boast higher chances of sunshine, September's conditions suggest that visitors can expect a mix of sun and clouds. As the rainy season starts to wind down, this month offers a pleasant opportunity for those wishing to soak up some sun in the vibrant atmosphere of the Dominican Republic.
In September, Santo Domingo enjoys a delightful 12 hours of daylight, maintaining the summer trend established in the preceding months. As the year progresses from the longer days of summer in June and July, a gradual decline in daylight duration begins, yet September marks a stable equilibrium before the daylight hours retreat again in October. This consistent availability of natural light not only enhances the vibrancy of daily life but also sets the perfect backdrop for outdoor activities, making it an ideal time for locals and visitors alike to explore the rich cultural tapestry of the Dominican Republic. As the days start to shorten slightly, the warm ambiance of the city continues to beckon, offering a seamless transition into the autumn season.
In September, Santo Domingo experiences a gentle shift in its breezy charm, with an average wind speed of 2.1 m/s (5 mph), marking a slight decrease from the summer months. This drop continues a trend observed as the year progresses, with the winds gradually becoming calmer as they approach October’s 2.0 m/s (4 mph). Notably, September's winds are among the lightest of the year, providing a more tranquil atmosphere ideal for leisurely strolls along the coastline. This serene climate invites visitors to enjoy the vibrant cityscape and rich culture, as the cooler breezes work to usher in the autumn season. Overall, the subtle fluctuations in wind speed throughout the year reflect Santo Domingo's transition from the lively summer season to the quieter months ahead, enhancing the island’s enchanting allure.
Weather in Santo Domingo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santo Domingo, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 35°C (95°F), with an average of 27°C (81°F). The month is characterized by higher precipitation of 107 mm (4.2 in) over 21 days, and humidity levels are elevated at 73%. In contrast, January features milder temperatures, with a minimum of 15°C (60°F), an average of 24°C (75°F), and a maximum of 31°C (88°F). Precipitation is significantly lower at 36 mm (1.4 in) spread over just 11 days, while humidity decreases to 65%. For a closer look at the weather during this month, you can visit Santo Domingo weather in January.
When comparing the weather in September and February, notable differences emerge. September is characterized by warmer temperatures, with a minimum of 22°C (72°F) and an average of 27°C (81°F), reaching a maximum of 35°C (95°F). In contrast, February offers milder conditions, with a minimum of 18°C (65°F) and an average of 24°C (76°F), peaking at 31°C (88°F). Additionally, September sees more precipitation, totaling 107 mm (4.2 in) over 21 days, compared to February's 49 mm (1.9 in) over 18 days. Humidity also tends to be higher in September at 73%, while February enjoys slightly lower humidity levels at 63%. For more detailed insights, check out Santo Domingo weather in February.
September and March present contrasting weather patterns. September generally features higher temperatures, with a minimum of 22°C (72°F), an average of 27°C (81°F), and a maximum reaching 35°C (95°F). This month also sees considerable precipitation, accumulating 107 mm (4.2 in) over 21 days, alongside a notable humidity level of 73%. In contrast, March experiences milder temperatures, starting with a minimum of 16°C (62°F) and averaging 24°C (76°F), peaking at 32°C (89°F). The precipitation is significantly lower, totaling 52 mm (2.1 in) across 16 days, and the humidity drops to a more comfortable 59%. For more detailed information, you can check Santo Domingo weather in March.
When comparing the weather in September and April, we can observe several distinct differences. September tends to be warmer, with average temperatures hovering around 27°C (81°F), peaking at a maximum of 35°C (95°F). In contrast, April's average temperature is slightly cooler at 25°C (78°F), with a maximum of 32°C (91°F). Precipitation is more frequent in September, with rainfall on 21 days totaling 107 mm (4.2 in), compared to April's 18 days of rain and 76 mm (3.0 in) of precipitation. Additionally, humidity is higher in September at 73%, whereas April has a more comfortable humidity level of 58%. For more detailed information, you can check Santo Domingo weather in April.
September and May exhibit some notable differences in weather patterns. September tends to be warmer, with average temperatures around 27°C (81°F) and maximum highs reaching up to 35°C (95°F), compared to May’s average of 26°C (79°F) and maximum of 33°C (91°F). Both months experience similar precipitation levels, with September receiving 107 mm (4.2 in) over 21 days and May slightly higher at 108 mm (4.3 in) over 24 days. However, the humidity is significantly higher in September at 73%, while May enjoys a more comfortable humidity level of 57%. For more detailed information, you can check Santo Domingo weather in May.
When comparing the weather in September and June, both months showcase warm temperatures, with averages around 27°C (81°F). However, September tends to be hotter overall, with maximum temperatures reaching up to 35°C (95°F) compared to June's 33°C (92°F). Additionally, September experiences significantly more precipitation, totaling 107 mm (4.2 in) over 21 days, whereas June has less rain at 87 mm (3.4 in) over 24 days. Humidity levels are also higher in September at 73% compared to June's 57%, making September feel more humid and potentially uncomfortable. For more detailed insights about June weather, you can visit Santo Domingo weather in June.
In comparing the weather of September and July, we see some notable similarities and differences. Both months feature a minimum temperature of around 22°C (72°F) and an average temperature of 27°C (81°F). However, September tends to be slightly warmer with a maximum of 35°C (95°F), compared to July's peak of 34°C (93°F). Precipitation levels are the same at 107 mm (4.2 in), but September experiences rain over 21 days, while July registers rain for 24 days. Additionally, September has a higher humidity level at 73%, compared to July's 63%. For a more detailed look at July's climate, you can visit Santo Domingo weather in July.
In comparing the weather of September to that of August, both months exhibit similar temperature ranges, with September having a minimum temperature of 22°C (72°F) and an average of 27°C (81°F), while August shares the same minimum and average. However, September slightly edges out August in terms of maximum temperature at 35°C (95°F) compared to August's 34°C (93°F). When it comes to precipitation, September sees 107 mm (4.2 in) over 21 days, which is less than August's 150 mm (5.9 in) over 24 days, indicating that September is somewhat drier. Overall, while both months are warm and humid, September offers slightly hotter weather with less rainfall. For more details on the weather in August, check Santo Domingo weather in August.
September and October exhibit similar warm temperatures, with September averaging 27°C (81°F) and October slightly cooler at 26°C (79°F). Both months have minimum temperatures that remain comfortably above 20°C, but September records slightly higher maximum temperatures, peaking at 35°C (95°F) compared to October's 33°C (92°F). Precipitation increases in October, totaling 123 mm (4.9 in) over 23 days, while September sees 107 mm (4.2 in) over 21 days. Humidity remains relatively consistent, with September at 73% and October slightly lower at 72%. For more details, you can check Santo Domingo weather in October.
In September, the weather tends to be hotter, with average temperatures reaching 27°C (81°F) and highs peaking at 35°C (95°F). The month also experiences considerable rainfall, totaling 107 mm (4.2 in) over 21 days, accompanied by relatively high humidity levels of 73%. In contrast, November sees slightly cooler temperatures, with an average of 25°C (78°F) and maximums of 33°C (92°F). The precipitation increases marginally to 113 mm (4.4 in), but it occurs over fewer days—15 in total—while humidity remains similar at 72%. For more detailed information on the weather in November, you can visit Santo Domingo weather in November.
In comparing the weather of September and December, one can observe notable differences in temperature and precipitation. September experiences warmer conditions, with minimum temperatures around 22°C (72°F) and maximums reaching up to 35°C (95°F). The average temperature is 27°C (81°F), but it's also a wetter month, receiving 107 mm (4.2 in) of rain over 21 days and higher humidity levels at 73%. In contrast, December offers a cooler climate, with minimums at 18°C (65°F) and maximums of 32°C (90°F), leading to a more comfortable average of 25°C (77°F). This month sees significantly less rainfall, totaling only 45 mm (1.8 in) over 15 days, along with slightly lower humidity at 69%. For more details on December's weather, you can visit Santo Domingo weather in December.
As September unfolds in Santo Domingo, the weather showcases a unique interplay of warmth and humidity that sets it apart from other months. While temperatures remain comfortably high, with afternoons often reaching a sweltering peak, nighttime brings a refreshing coolness that invites relaxation. This month is also marked by a significant increase in precipitation, with rain showers gracing much of the month, contributing to the lush landscapes of the region. The elevated humidity can make the air feel heavy, emphasizing the tropical essence of the city. For those looking to understand more about the yearly climate patterns and how they shape the experience of Santo Domingo, be sure to explore Santo Domingo Climate.