Last updated: August 21, 2025
Santiago de los Caballeros experiences a dynamic September climate, characterized by a maximum temperature reaching 35°C (95°F) and an average of 27°C (80°F). The minimum temperature hovers around 21°C (69°F), providing warm evenings for residents and visitors alike. Rainfall is a significant aspect this month, with a total precipitation of 104 mm (4.1 in) spread across 16 days, adding to the region's lush landscapes. Humidity levels remain relatively high, at 73%, contributing to the tropical feel of this vibrant Dominican city. Whether you're drawn to the warmth or the rainy season's lushness, September in Santiago de los Caballeros offers a unique blend of climate features that shape the local experience.
In September, Santiago de los Caballeros continues to bask in the warmth typical of the Dominican Republic, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F). The average temperature holds steady at 27°C (80°F), reflecting a slight dip from the sizzling highs of August. This month marks a subtle transition toward cooler autumnal climes, though it remains comfortably warm, ideal for outdoor activities. Interestingly, September maintains the trend of the preceding summer months, with high temperatures consistently hovering around 35°C (95°F), ensuring that the tropical atmosphere remains vibrant and inviting. As the rains might grace the landscape, the lush surroundings combine with the warm temperatures, creating a truly picturesque setting.
In September, Santiago de los Caballeros experiences a notable increase in precipitation, with 104 mm (4.1 in) of rain recorded over 16 days. This substantial rainfall marks a peak in the annual cycle, contrasting sharply with the drier months earlier in the year. The uptick in precipitation often correlates with the transition into the wetter season, as the region typically receives more consistent rain. As the summer months wane, the shift towards September not only enhances the lush landscapes but also reinforces the importance of water for agricultural activities. This trend underscores Santiago's climatic rhythm, where September stands out as a critical month for replenishing water resources before the drier October arrives.
In September, Santiago de los Caballeros experiences a noticeable increase in humidity, reaching 73%, which marks one of the highest points of the year. This rise is part of a broader trend that begins in late summer; after a steady climb from 57% in May to 71% in August, September crowns this upward trajectory. Following this peak, humidity levels slightly decline into October and November, stabilizing around 72%. This pattern reflects the tropical climate of the region, where warm air holds more moisture, creating a lush atmosphere that defines the Dominican Republic's vibrant seasons.
September in Santiago de los Caballeros continues the trend of extreme sun exposure, with a UV Index of 12 and a burn time of just 10 minutes. As summer fades, the UV levels slightly decrease from the intense measures seen during the preceding months; however, caution remains essential. March to August consistently recorded a peak UV Index of 13, illustrating the region's persistent intensity throughout the summer. While October offers a slight reprieve with a UV Index of 11, the overall pattern underscores the importance of sun protection during this time of year. For more detailed insights, check out the full report on the Santiago de los Caballeros UV Index.
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As the summer warmth lingers, September in Santiago de los Caballeros radiates with an impressive 312 hours of sunshine. This month follows the peak brightness of July, which boasts a striking 363 hours, and showcases a gradual, yet notable, decline into the autumn months. Despite the drop in sunlight hours, September still triumphs with considerably more sunshine than the winter months ahead. Notably, the transition from July to September highlights a seasonal ebb, giving way to the charming allure of early fall, while still offering plenty of opportunities to bask in the sun-drenched beauty of this vibrant Dominican city.
As September rolls into Santiago de los Caballeros, the likelihood of sunny weather stands at a comfortable 54%, aligning with the trends of earlier months. Unlike the summer's lower sunshine percentages in June (38%) and August (39%), September sees a noticeable rebound, indicating a shift towards more favorable conditions. This month maintains a sunny potential similar to April and May, offering an enticing balance of warmth and brightness before the rainy season fully sets in. With percentages comparable to the pleasant conditions of November (58%) and December (61%), September is an excellent time for outdoor activities, promising a mix of sun and warmth to enjoy the vibrant Dominican landscape.
As September unfolds in Santiago de los Caballeros, the daylight durations offer a delightful transition. With 12 hours of daylight, this month mirrors the longer summer days that peak in May, June, and July, where sunlight stretches to a generous 13 hours. Following the warm embrace of summer, September marks a subtle retreat toward shorter days, echoing the gradual shift seen from August's 12 hours down to 11 hours in October. This gradual waning not only hints at the arrival of autumn but also creates a rhythm of daylight that enhances the vibrant cultural life of the city, paving the way for the shorter days of the coming months.
In Santiago de los Caballeros, September ushers in a gentle breeze with an average wind speed of 2.0 m/s (4 mph), marking a noticeable dip from the livelier winds of the summer months. This softening of the wind is part of a broader trend observed throughout the latter part of the year, as speeds decline from an invigorating 3.4 m/s (8 mph) in July to a calm lull by October. Comparatively, the early months of the year displayed slightly higher wind speeds, with February peaking at 3.2 m/s (7 mph). As we transition from the heat of summer, September's tranquil winds invite a sense of relaxation, perfectly complementing the vibrant atmosphere of this Dominican haven.
Weather in Santiago de los Caballeros varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santiago de los Caballeros, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase contrasting weather patterns in Santiago de los Caballeros. September typically experiences higher temperatures, with a minimum of 21°C (69°F) and an average of 27°C (80°F), peaking at 35°C (95°F). This month also brings significant rainfall, with 104 mm (4.1 in) spread over 16 days, contributing to a humidity level of 73%. In contrast, January offers a more moderate climate, featuring a minimum temperature of 13°C (55°F), an average of 23°C (73°F), and a maximum of 31°C (88°F). Rainfall is markedly less in January, totaling only 37 mm (1.5 in) across just 6 days, and the humidity is slightly lower at 65%. For more detailed insights, you can check Santiago de los Caballeros weather in January.
In September, the weather is noticeably warmer, with average temperatures reaching 27°C (80°F) and maximums soaring up to 35°C (95°F). This month also experiences considerable rainfall, totaling 104 mm (4.1 in) over 16 days, coupled with high humidity levels at 73%. In contrast, February brings milder conditions, with average temperatures around 23°C (74°F) and maximums peaking at 32°C (89°F). The precipitation is significantly lower at 29 mm (1.1 in) over just 10 days, and humidity decreases to a comfortable 63%. For a detailed overview of February weather, visit Santiago de los Caballeros weather in February.
When comparing the weather in September and March, it’s clear that both months have their distinct characteristics. September typically boasts warmer temperatures, with an average of 27°C (80°F) and a maximum reaching up to 35°C (95°F), while March is cooler, averaging 23°C (74°F) with a maximum of 33°C (92°F). Precipitation is more frequent in September, occurring on 16 days with a total of 104 mm (4.1 in) compared to March's 14 days of rain and 86 mm (3.4 in). Additionally, September experiences higher humidity at 73%, whereas March enjoys a more comfortable 59%. For more details, you can check Santiago de los Caballeros weather in March.
When comparing the weather in September and April, we can observe some notable differences. September tends to be warmer, with average temperatures reaching 27°C (80°F) and a maximum of 35°C (95°F), while April is slightly cooler, averaging 25°C (77°F) but with the same maximum temperature. Additionally, September experiences higher humidity at 73% compared to April's 58%, which can contribute to a more uncomfortable feel during the hotter days. Precipitation is also more frequent in September, with 104 mm (4.1 in) across 16 days, whereas April sees only 57 mm (2.2 in) over 11 days. For more detailed insights, you can check the Santiago de los Caballeros weather in April.
September and May present notably different weather patterns. In September, temperatures range from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), with an average of 27°C (80°F). This month experiences more precipitation, totaling 104 mm (4.1 in) over 16 days, combined with a higher humidity level of 73%. In contrast, May offers slightly cooler temperatures, with a minimum of 19°C (67°F) and an average of 26°C (79°F), reaching up to 35°C (96°F) at its peak. Additionally, May sees less rainfall, totaling 54 mm (2.1 in) over just 13 days, and a lower humidity level of 57%. For more specific insights, you can visit Santiago de los Caballeros weather in May.
When comparing the weather in September and June, we see some notable differences despite similar average temperatures. Both months have a minimum temperature around 20-21°C (68-69°F) and a maximum that peaks at 35°C (95-96°F), but September experiences significantly higher precipitation, with 104 mm (4.1 in) falling on an average of 16 days compared to June's 34 mm (1.3 in) across just 9 days. Additionally, the humidity in September is noticeably higher at 73%, making the air feel more oppressive than in June, when humidity levels are a more comfortable 57%. For more details, check out Santiago de los Caballeros weather in June.
When comparing the weather in September and July, both months experience similar temperature ranges, with minimums around 21°C (69°F), average temperatures of approximately 27°C (80°F), and maximums reaching up to 35°C (95°F). However, September tends to be wetter, with 104 mm (4.1 in) of precipitation over 16 days, in contrast to July's 40 mm (1.6 in) spread across just 10 days. Additionally, September has a higher humidity level at 73%, compared to July's 63%. For more detailed information about July weather, you can check out Santiago de los Caballeros weather in July.
In comparing the weather between August and September, September tends to be slightly more humid with an average humidity of 73% compared to August's 71%. While both months have similar minimum temperatures, September's maximum temperature is slightly lower at 35°C (95°F), compared to August's peak of 36°C (97°F). Additionally, September experiences significantly more rainfall, with 104 mm (4.1 inches) over 16 days, as opposed to August's 48 mm (1.9 inches) over just 10 days. For a detailed look at August's weather, you can refer to Santiago de los Caballeros weather in August.
In September, the weather boasts warmer temperatures with a minimum of 21°C (69°F) and an average of 27°C (80°F), peaking at 35°C (95°F). However, the month is also quite wet, receiving 104 mm (4.1 in) of precipitation over 16 days, alongside a humidity level of 73%. In contrast, October sees a slight decrease in temperature, with minimums dropping to 19°C (67°F) and an average of 26°C (79°F), while still reaching a maximum of 35°C (94°F). The precipitation also decreases significantly to 71 mm (2.8 in) across 14 days, and humidity levels remain relatively stable at 72%. For a more detailed overview, check out Santiago de los Caballeros weather in October.
In comparing the weather between September and November, September tends to be warmer with average temperatures reaching 27°C (80°F) and maximums peaking at 35°C (95°F). In contrast, November sees slightly cooler averages at 25°C (77°F), with maximums of 33°C (91°F). Precipitation is also higher in September, totaling 104 mm (4.1 in) over 16 days, whereas November experiences significantly less rainfall at 58 mm (2.3 in) over 11 days. Humidity levels remain relatively consistent, around 73% in September and 72% in November. For more detailed information, you can check Santiago de los Caballeros weather in November.
In September, the weather is significantly warmer, with average temperatures reaching 27°C (80°F) and maximums hitting 35°C (95°F). This month also sees higher humidity levels at 73% and considerable rainfall, averaging 104 mm (4.1 in) over 16 days. In contrast, December offers a milder climate, with average temperatures dropping to 24°C (75°F) and maximums of 32°C (89°F). The precipitation decreases notably to just 28 mm (1.1 in) over 7 days, and humidity is slightly lower at 69%. For more details about winter conditions, check out Santiago de los Caballeros weather in December.
As September rolls into Santiago de los Caballeros, the weather showcases its tropical essence with a few notable differences from other months. The warmth remains prominent, but the average temperature nudges slightly lower than the peak summer months, offering a more comfortable experience for residents and visitors alike. This month also brings an increase in humidity and precipitation, with a significant number of rainy days—an aspect that sets September apart from the drier spells earlier in the year. While it may feel steamy at times, the occasional rain offers a refreshing respite, painting the landscape in vibrant greens. For a deeper dive into the region’s weather patterns, explore the detailed insights at Santiago de los Caballeros Climate.