Last updated: August 21, 2025
Experience the vibrant September weather in Jamaica and Cuba, where average temperatures hover around a pleasant 27°C (81°F) with highs reaching up to a sizzling 34°C (94°F). Expect a refreshing hint of humidity at 78%, perfect for those who love a tropical feel. However, be prepared for widespread rainfall, with approximately 150 mm (5.9 in) of precipitation over about 22 days. This dynamic blend of warmth and moisture creates an ideal backdrop for exploration, beach days, and cultural festivals, ensuring that your September getaway is both memorable and invigorating.
As September rolls in, both Jamaica and Cuba bask in warm tropical temperatures that set a lovely scene for late summer escapes. With minimum temperatures around 21°C (70°F), the nights remain comfortably mild, while daytime averages hover at a pleasant 27°C (81°F). The heat peaks at about 34°C (94°F), consistent with the hotter months of the year. This month marks a transition, as temperatures start to dip slightly compared to the scorching heights of July and August, yet still invite sun-seekers to lounge on the beaches. The overall climate remains inviting, perfect for immersing oneself in the vibrant culture and stunning natural beauty these islands have to offer.
In September, Jamaica and Cuba experience significant rainfall, accumulating an average of 150 mm (5.9 in) across approximately 22 days. This marks a continuation of the wet season, reflecting a peak in precipitation following the previous months of August and July, which also saw substantial rainfall at 142 mm (5.6 in) and 145 mm (5.7 in), respectively. The transition from the drier months of April and March showcases a clear upward trend in precipitation as the Caribbean embraces the height of its rainy season. Interestingly, while September’s totals demonstrate a robust increase, the frequent rainfall may mitigate the risks of drought experienced earlier in the year, underscoring the region's reliance on this vital water source.
As the summer months give way to autumn, September humidity in Jamaica and Cuba remains notably high at 78%. This slight rise from August's 77% hints at the lingering tropical warmth that characterizes the Caribbean climate. As we transition into fall, humidity levels gradually climb toward October's peak of 80%, setting the stage for more humid conditions in the coming months. Interestingly, post-summer air tends to remain heavy and rich, as evidenced by the consistent humidity levels that fluctuate moderately throughout the year, revealing a tropical environment that thrives on warmth and moisture.
As summer transitions into fall, September in Jamaica and Cuba sees a notable consistency in UV Index, remaining at 12—an extreme level that necessitates extra caution when enjoying the sun. This share of the year showcases a trend of high UV exposure, peaking from June through September, with burn times plummeting to just 10 minutes. Such intensity reinforces the importance of protective measures, as residents and travelers alike embrace the tropical warmth. Subsequently, the UV Index is expected to taper off in October, dropping to 10, signaling a very high exposure category, as days start to shorten. For more detailed insights on UV radiation levels during your travels, check out Jamaica UV Index.
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As September rolls into Jamaica and Cuba, it brings with it a delightful average of 313 sunshine hours, continuing the trend of abundant sunshine from the height of summer. Following July's peak at 343 hours, and a near repetition in August with 336 hours, September gently transitions into the cooler months while still basking in ample sunlight. This slight dip from the summer months doesn't overshadow the region's overall sunny disposition, as the year remains characterized by generous daylight, with sunshine hours gradually declining towards the end of the year. Each month from January to September showcases a captivating increase in sunlight, peaking in the summer before gracefully cascading into the softer glow of fall.
As summer transitions to autumn in September, the likelihood of sunny weather in Jamaica and Cuba settles at 34%, aligning with the trend of reduced sunshine compared to the more vibrant summer months. This dip in sunshine contrasts sharply with the peak seen in March at 79% and the consistent highs of February and April, which both boast over 60% chances of clear skies. With the arrival of September, the warm days start to wane, echoing the sun-soaked spirit of the earlier months, but still offering visitors a refreshing touch of tropical weather mixed with the tranquil charm of the coming fall. As the season shifts, travelers should be prepared for a blend of sun and occasional showers, typical of this transitional time in the Caribbean.
As September rolls in, Jamaica and Cuba enjoy a delightful balance of 12 hours of daylight, maintaining a trend that reflects the gradual shift towards autumn. This month follows the sun-kissed days of summer, where both islands basked in 13 hours of daylight from May through August. Interestingly, September marks a slight decline in daylight, foreshadowing the shorter days of October and November, which will both see 11 hours of daylight. This seasonal rhythm showcases the enchanting interplay of light and time as the Caribbean transitions from the vibrant energy of summer to the more subdued hues of fall, inviting residents and visitors alike to relish in nature's changes.
As summer transitions to autumn, September in Jamaica and Cuba is characterized by a noticeable dip in average wind speeds, averaging just 2.3 m/s (5 mph). This is a significant drop from the breezier summer months, with peaks reaching up to 4.0 m/s (9 mph) in April. It appears that as the sweltering heat of summer gives way to the cooler autumn air, the winds calm down, creating a tranquil atmosphere perfect for relaxing by the shore. In contrast to the playful gusts of earlier months, September’s gentle breezes invite a more serene experience, making it an ideal time for reflection and unwinding in the tropical paradise. As October approaches, a slight increase to 2.9 m/s (6 mph) hints at the returning whispers of wind, suggesting a gradual transition back to the livelier gusts anticipated in the following months.
Weather in Jamaica varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Jamaica, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January display stark contrasts in weather conditions. September typically has a warm climate, with temperatures ranging from a minimum of 21°C (70°F) to a maximum of 34°C (94°F) and an average of 27°C (81°F). This month also sees significant rainfall, with around 150 mm (5.9 in) of precipitation spread over 22 days, creating a humid atmosphere at 78% humidity. In contrast, January offers milder temperatures, where the minimum is 11°C (51°F), the average is 22°C (71°F), and the maximum reaches 30°C (86°F). January is drier, with only 25 mm (1.0 in) of precipitation over just 4 days, and a slight increase in humidity at 79%. For more detailed information, you can check out Jamaica weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 34°C (94°F), with an average of 27°C (81°F). The month also experiences significant precipitation, totaling 150 mm (5.9 in) over about 22 days, contributing to a high humidity level of 78%. In contrast, February offers milder conditions, with temperatures varying from 7°C (45°F) to a maximum of 31°C (89°F), averaging at 23°C (74°F). Precipitation is considerably lower, at just 26 mm (1.0 in) over 3 days, and humidity remains relatively stable at 77%. For more details, check out Jamaica weather in February.
In comparing the weather between September and March, a notable contrast emerges. September generally experiences warmer temperatures, with minimums around 21°C (70°F) and maximums peaking at 34°C (94°F), while averaging 27°C (81°F). The month also brings significant rainfall, totaling 150 mm (5.9 in) over 22 days, and boasts a relatively high humidity of 78%. In contrast, March offers a much cooler climate, with minimum temperatures dropping to 11°C (52°F) and maximums reaching 32°C (90°F), averaging 23°C (74°F). Additionally, precipitation in March is minimal, at just 16 mm (0.6 in) over only 3 days, and humidity levels are slightly lower at 71%. For those interested in details about March weather, check out Jamaica weather in March.
In comparing the weather between September and April, notable differences emerge in temperature and precipitation patterns. September experiences warmer conditions with minimum temperatures around 21°C (70°F) and averages peaking at 27°C (81°F), while April starts cooler, with minimums around 14°C (57°F) but an average high similar to September at 34°C (94°F). Precipitation also varies significantly; September is much wetter, with 150 mm (5.9 in) falling over 22 days, compared to April's more moderate 43 mm (1.7 in) over just 7 days. Additionally, humidity levels are slightly higher in September at 78%, whereas April sees a more comfortable 70%. For a more detailed look at April weather, you can visit Jamaica weather in April.
When comparing the weather in September and May, we see some notable differences despite similar maximum temperatures reaching up to 34°C (94°F). September has a slightly warmer average temperature at 27°C (81°F) compared to May's 26°C (79°F), but it also experiences higher humidity levels at 78% versus May's 72%. Precipitation is more frequent in September, with 150 mm (5.9 in) over 22 days, while May has a bit more rain at 187 mm (7.3 in) but over only 16 days. For more detailed insights on May weather in Jamaica, you can check this link: Jamaica weather in May.
When comparing the weather in September and June, we find that both months share similar average temperatures, hovering around 27°C (81°F), with maximum highs reaching up to 34°C (94°F). However, September tends to be slightly more humid, with humidity levels at 78% compared to June's 73%. While June has a marginally lower precipitation level of 157 mm (6.2 in) over 20 days, September sees higher precipitation totals of 150 mm (5.9 in) across 22 days, suggesting more frequent rainfall during that month. For a detailed look at June's weather, you can visit Jamaica weather in June.
In comparing the weather of September and July, it is evident that both months exhibit warm conditions, albeit with slight variations. July typically enjoys higher average temperatures, with a minimum of 22°C (72°F) and a maximum of 35°C (95°F), while September features a minimum of 21°C (70°F) and a maximum of 34°C (94°F). Precipitation levels are somewhat similar, with July receiving 145 mm (5.7 in) over 21 days and September experiencing 150 mm (5.9 in) over 22 days. Humidity is also high in both months, but September is slightly more humid at 78% compared to July’s 75%. For more detailed insights into July's climate, you can explore the link: Jamaica weather in July.
September weather shows a slight dip in temperatures compared to August, with average highs of 34°C (94°F) in September, slightly lower than August's maximum of 35°C (94°F). The minimum temperature in September averages at 21°C (70°F), compared to August's warmer minimum of 23°C (73°F). Both months experience significant precipitation, with September receiving 150 mm (5.9 in) of rain over 22 days, while August recorded 142 mm (5.6 in) over 20 days. Humidity levels remain similar, with September at 78% and August at 77%. For more details on August's weather, visit Jamaica weather in August.
September and October showcase a shift in weather patterns, with September being slightly warmer and wetter. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 34°C (94°F), accompanied by 150 mm (5.9 in) of rainfall over 22 days and a humidity level of 78%. Meanwhile, October sees a slight drop in temperatures, with minimums of 16°C (61°F) and maximums reaching 32°C (91°F). Precipitation also decreases to 122 mm (4.8 in) over 20 days, while humidity rises slightly to 80%. For a more detailed overview of October weather, you can check Jamaica weather in October.
In September, the weather is quite warm, with temperatures averaging 27°C (81°F) and reaching highs of up to 34°C (94°F). However, it is also the wettest month, with 150 mm (5.9 in) of precipitation over 22 days, and humidity levels at 78%. In contrast, November experiences a more moderate climate, with average temperatures dropping to 24°C (76°F) and maximums of 31°C (88°F). This month is significantly drier, receiving only 47 mm (1.9 in) of rainfall across 10 days, while humidity remains slightly higher at 81%. For more details, you can visit Jamaica weather in November.
In September, the weather is typically warmer with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 34°C (94°F). The month experiences high humidity at 78% and substantial precipitation of 150 mm (5.9 in) over approximately 22 days, making it one of the wetter months of the year. In contrast, December brings cooler temperatures with an average ranging from 10°C (51°F) to 30°C (87°F). The month is much drier, with only 37 mm (1.5 in) of precipitation occurring over about 5 days, while humidity slightly increases to 81%. For those interested in more details about December weather conditions, you can check this link: Jamaica weather in December.
In September, Jamaica’s weather presents a vibrant tapestry of warmth and moisture, distinguished by average temperatures that make the tropical paradise a sultry retreat. With maximum highs soaring to 34°C (94°F) and a palpable humidity around 78%, the air often carries a sense of stickiness, setting it apart from the drier months. Frequent rain showers, totaling around 150 mm over 22 days, contribute to a lush landscape but also require visitors to be prepared for unpredictable downpours. This blend of heat and humidity, coupled with consistent rainfall, makes September a unique time in Jamaica’s climate journey. For those interested in exploring more about Jamaica's distinctive weather patterns throughout the year, check out Jamaica Climate.