Last updated: April 22, 2025
In Chetumal, Mexico, September showcases a warm climate with maximum temperatures reaching up to 34°C (93°F) and an average of 28°C (83°F). The month experiences minimum temperatures around 24°C (75°F), providing warm nights. However, precipitation is notably high, with 168 mm (6.6 in) of rain spread over approximately 25 days, contributing to a humidity level of 85%. This blend of warmth and moisture defines September's tropical allure, making it a unique time to explore this vibrant locale.
In September, Chetumal, Mexico, experiences a warm continuation of the summer season, with temperatures showcasing a notable consistency. The minimum stays comfortably at 24°C (75°F), while the average hovers around 28°C (83°F), and the maximum reaches 34°C (93°F). This slight dip from August's peak suggests a gentle transition towards cooler months, yet September remains predominantly warm, inviting beachgoers and outdoor enthusiasts alike to enjoy the tropical climate. As the month progresses, the lush landscapes of Chetumal are complemented by the balmy weather, making it an inviting destination for those seeking a sunny escape.
September marks a significant transition in Chetumal, Mexico, as the rainy season reaches its peak. With precipitation totaling 168 mm (6.6 in) across 25 days, this month stands out for its increased rainfall compared to the summer months, reflecting a trend of heightened moisture as the year progresses. The sharp rise from August's 143 mm (5.6 in) signals the onset of intense tropical weather patterns that often influence late summer and early fall. As the city experiences these substantial downpours, the lush landscape flourishes, further highlighting September’s role as a critical month in the annual precipitation cycle.
In September, Chetumal, Mexico, experiences a significant rise in humidity, peaking at 85%. This marks a return to the levels seen at the beginning of the year, after a gradual decline from the high humidity in January (85%) to the drier months of late spring and early summer, with June reaching its lowest at 62%. As the summer months transition into fall, humidity levels rebound sharply, mirroring the high humidity patterns of the earlier months. Following September, humidity continues to increase, reaching 87% in October and maintaining elevated levels throughout the remainder of the year. This trend highlights a clear seasonal pattern where humidity rises significantly after the summer, creating a tropical atmosphere that is characteristic of Chetumal's climate.
During September in Chetumal, Mexico, the UV Index reaches 13, classified as extreme. This trend reflects a consistent pattern observed throughout the summer months, where the UV Index remains high, peaking in April at 14 and stabilizing at 13 from May through September. The burn time remains critically low at just 10 minutes, emphasizing the need for sun protection during this period. As temperatures and sun intensity persist, it's essential to stay informed about UV levels. For more detailed information, check out the Chetumal UV Index.
UV Risk Categories
September in Chetumal, Mexico, brings a delightful shift in daylight, with the sun gracing the city for 297 hours. While this month enjoys more sunshine than the earlier months of the year, it trails slightly behind the summer peak, showcasing a robust yet gradual transition toward autumn. Interestingly, from March to May, the city basks in an impressive stretch of sunlight, with May standing out as the sunniest month. The overall trend suggests that while the sun begins to set a bit earlier, September still boasts a healthy dosage of sunlight, making it a splendid time to explore the vibrant landscapes and rich culture of the region. As the year winds down toward winter, Chetumal remains a sun-soaked haven, inviting visitors to savor this warm embrace of sunshine.
In Chetumal, Mexico, the likelihood of sunny weather in September takes a dip, with only a 34% chance of clear skies. This marks a noticeable decline from the sunnier months of March and April, which boast probabilities of 69% and 56%, respectively. As summer transitions into fall, the trend shows a consistent decrease in sunshine, reflected by the 33% chance in June and 37% in July. While September may not be the sunniest month, the shifting weather patterns hint at the vibrant tropical atmosphere that continues to charm visitors, even as the days grow a bit cloudier.
In Chetumal, Mexico, September marks a transition in daylight duration as summer begins to fade. With approximately 12 hours of daylight, the month mirrors the lighter days of August, which also enjoys the same amount of sunlight. The trend emerges in the gradual increase of daylight from March to May, reaching a peak in the summer months, where residents bask in up to 13 hours of daylight. However, as the year progresses towards October, the daylight hours begin to recede, returning to the 11-hour mark typical of the winter months. This rhythmic pattern not only sets the stage for vibrant outdoor activities but also invites a sense of both seasonal change and continuity in daily life.
In Chetumal, Mexico, the September winds mirror the gentle breezes that characterize the late summer months, averaging 3.7 m/s (8 mph). This consistent wind speed indicates a slight decline from the peak of 4.7 m/s (11 mph) observed in May, reflecting the transition into the more tranquil autumn season. Following a trend, the winds begin to taper off as October's average drops to 2.7 m/s (6 mph), signaling a continued decrease as the year progresses. The September breezes carry an inviting warmth, making outdoor activities enjoyable while heralding the approach of cooler, calmer days ahead.
The weather in Chetumal 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 Chetumal and find detailed weather information for every month.
In September, Chetumal experiences warmer weather with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), accompanied by significant rainfall of 168 mm (6.6 in) over 25 days. The humidity remains high at 85%, contributing to a sticky atmosphere. In contrast, January brings milder temperatures, with a minimum of 16°C (61°F) and a maximum of 32°C (89°F), while rainfall decreases markedly to 57 mm (2.2 in) over just 11 days. Despite the shift to cooler, drier conditions, humidity remains constant at 85%. For more details, check out Chetumal weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), accompanied by high humidity at 85%. This month also sees considerable rainfall, with 168 mm (6.6 in) of precipitation over an average of 25 days. In contrast, February offers milder weather, with temperatures spanning from a low of 14°C (57°F) to a high of 33°C (91°F). The month is significantly drier, with only 29 mm (1.2 in) of precipitation over 12 days, and slightly lower humidity at 80%. For more details about February weather, you can visit Chetumal weather in February.
In comparing the weather during September and March, September tends to be hotter and more humid. The average temperature in September is around 28°C (83°F), with highs reaching up to 34°C (93°F) and a high humidity level of 85%. Additionally, September experiences significant rainfall, with 168 mm (6.6 in) of precipitation spread across 25 days. In contrast, March offers a more temperate climate, with average temperatures around 26°C (80°F) and maximums of 32°C (89°F). The month sees much less rain, totaling only 28 mm (1.1 in) over 9 days, and a lower humidity level of 69%. For a closer look at March weather specifics, see Chetumal weather in March.
In September, the weather in Chetumal is typically warmer and more humid compared to April, with average temperatures around 28°C (83°F) and maximums reaching 34°C (93°F). However, this month also brings significant rainfall, averaging 168 mm (6.6 in) over 25 days, leading to a high humidity of 85%. In contrast, April experiences milder conditions with minimum temperatures of 20°C (67°F) and a similar average of 28°C (82°F), but it sees much less precipitation at just 35 mm (1.4 in) over 8 days and lower humidity levels at 64%. For more specific details, you can check out Chetumal weather in April.
In comparing the weather between September and May, both months exhibit similar average temperatures of 28°C (83°F), yet September tends to be slightly warmer, with maximum temperatures reaching 34°C (93°F) compared to May's 33°C (92°F). September is notably wetter, experiencing a substantial 168 mm (6.6 in) of precipitation over 25 days, while May sees only 83 mm (3.3 in) across 20 days. Additionally, humidity levels are higher in September at 85%, contrasting with May's more comfortable 63%. For a detailed look at May's weather patterns, you can check out Chetumal weather in May.
In comparing the weather of September and June, both months experience similar minimum and average temperatures, typically around 24°C (75°F) and 28°C (83°F), respectively. However, June tends to be slightly hotter, with a maximum temperature reaching 35°C (95°F), compared to September's peak of 34°C (93°F). Additionally, June is noticeably wetter, receiving 249 mm (9.8 in) of precipitation over 23 days, while September has 168 mm (6.6 in) of rainfall spread across 25 days, contributing to higher humidity levels of 85% in September versus 62% in June. For a detailed look at June's weather in Chetumal, check out Chetumal weather in June.
In comparing the weather of September and July, we can observe some notable differences. September features a slightly higher average temperature of 28°C (83°F) compared to July's 29°C (84°F), but both months share a minimum temperature of around 24°C (75°F/76°F). While July has a maximum temperature of 33°C (92°F), September reaches a peak of 34°C (93°F). However, September experiences significantly more precipitation, totaling 168 mm (6.6 in) over 25 days, compared to July's 105 mm (4.1 in) over 21 days, making September notably wetter. Additionally, humidity levels are higher in September at 85%, in contrast to July's 65%. For more details about weather conditions in July, you can visit Chetumal weather in July.
In comparison to August, September experiences slightly cooler average temperatures, with a minimum of 24°C (75°F) and a maximum of 34°C (93°F), while August's average temperature peaks at 29°C (84°F). Both months share similar minimums and maximums, but September tends to be more humid, with humidity levels rising to 85% compared to August's 78%. Additionally, September sees more rainfall, accumulating 168 mm (6.6 in) over 25 days, which is an increase from August's 143 mm (5.6 in) over 22 days. For more details on August weather, check out Chetumal weather in August.
September and October weather in the region show some notable differences. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), with an average of 28°C (83°F). The month experiences significant rainfall, totaling 168 mm (6.6 in) over 25 days, combined with high humidity levels at 85%.
In contrast, October brings slightly cooler temperatures, with a minimum of 20°C (68°F), an average of 27°C (81°F), and a maximum of 33°C (92°F). However, it sees an increase in rainfall, with 213 mm (8.4 in) spread over 26 days, and humidity also rises to 87%.
For more detailed insights on October weather, you can check this link: Chetumal weather in October.
In September, the weather is typically warmer with minimum temperatures around 24°C (75°F) and average highs reaching up to 34°C (93°F). It also experiences higher precipitation, with 168 mm (6.6 in) spread over 25 days and humidity averaging 85%. In contrast, November presents a more moderate climate, featuring minimum temperatures of 18°C (64°F) and an average maximum of 32°C (89°F). Precipitation decreases to 108 mm (4.3 in) across 17 days, while humidity rises slightly to 88%. For a more detailed look at November's weather, check out Chetumal weather in November.
In September, the weather is characterized by warmer temperatures, with a minimum of 24°C (75°F) and an average high of 34°C (93°F), along with significant humidity at 85%. This month also sees considerable rainfall, totaling 168 mm (6.6 in) over 25 days, making it quite a wet period. In contrast, December offers a much cooler climate, with temperatures ranging from a minimum of 16°C (60°F) to an average of 31°C (88°F). Precipitation drops significantly to 51 mm (2.0 in), spread over 16 days, while humidity remains high at 88%. For more detailed weather insights, you can check Chetumal weather in December.
September in Chetumal exhibits a unique blend of warmth and humidity that sets it apart from the rest of the year. With temperatures reaching a maximum of 34°C (93°F), the month is characterized by high humidity levels around 85%, creating a sultry atmosphere. Frequent rain, with an average of 25 days of precipitation, contributes to a total rainfall of approximately 168 mm (6.6 in), making it one of the wettest months. While still warm, the combination of rain and humidity can make conditions feel more oppressive compared to other months. For those looking to experience Chetumal's climate throughout the year, check out Chetumal Climate for more details.