Last updated: October 30, 2025
Experience the vibrant September weather of Caye Caulker, Belize, where temperatures are pleasantly warm, averaging around 28°C (83°F) with a comfortable range between 25°C (78°F) and a maximum of 30°C (87°F). This tropical paradise features a high humidity level of 82%, contributing to its lush landscapes and vibrant marine life. Although the island receives about 166 mm (6.6 in) of rainfall over 24 days, these showers often bring refreshing relief rather than dampening the spirit of your adventure. Embrace the unique blend of warmth and tropical vibes as you explore all that Caye Caulker has to offer.
In September, Caye Caulker, Belize, reflects a delightful warmth that lingers in the Caribbean air. With minimum temperatures around 25°C (78°F) and daily averages of 28°C (83°F), the month is characterized by a cozy tropical ambiance. Daily highs reach up to 30°C (87°F), signaling an inviting climate perfect for beach outings and water activities. As the summer heat begins to gently wane, September retains a pleasant warmth, maintaining the island's signature charm. Notably, this month mirrors the warm patterns established in August, making it ideal for those looking to soak up the sun before the cooler months set in.
September in Caye Caulker, Belize, ushers in significant rainfall, with precipitation reaching 166 mm (6.6 in) over 24 days. This marks a noticeable uptick compared to the preceding months, reflecting the island's transition into its wetter season. Following the drier spells of April and March, where rainfall was minimal, the trend of increasing precipitation continues through the summer months of June and August, culminating in September's consistent showers. As September's rain paves the way for October's even heftier downpours, it becomes clear that the late summer and early autumn months are characterized by an escalation in both the amount and frequency of rainfall, creating a lush and vibrant environment in Caye Caulker.
In September, Caye Caulker, Belize experiences a notable shift in humidity, reaching 82%, which reflects the island’s transitional climate as it heads into the rainy season. This slight increase from the summer months indicates a return to the higher humidity levels seen earlier in the year. The humidity began at a peak of 85% in January, slowly decreasing to a low in April and May at 62%, before gradually rising again through the summer. As August wraps up with a 73% humidity, September’s rise signifies the approach of more tropical weather patterns, leading into the wetter months of October and November, which hover around 86% to 87%. Overall, September serves as a reminder of the lush and vibrant environment that the Caribbean is known for, inviting visitors to experience its warmth despite the increasing humidity.
In September, Caye Caulker, Belize, maintains a highly intense UV Index of 13, categorizing it as extreme and resulting in a burn time of just 10 minutes. This trend is consistent with the preceding months of June, July, and August, where the UV levels were similarly high, underscoring the necessity for protection during outdoor activities. As travelers soak in the sun-kissed beauty of this vibrant island, understanding these UV levels becomes crucial for a safe and enjoyable experience. With the UV Index remaining extreme from February through October, caution is advised whether you're lounging on the beach or exploring the stunning seascapes. For more detailed information on sun safety in this tropical paradise, visit Caye Caulker UV Index.
UV Risk Categories
As summer gently transitions into autumn, September in Caye Caulker, Belize, shines with an inviting 302 hours of sunshine. This month exemplifies a delightful consistency in the trend of abundant sunlight, nestled between the vibrant peaks of May and August, which boast the highest sun exposure of the year. Despite the slightly reduced hours this month, September still offers a generous amount of golden rays, making it an ideal time for beachgoers and nature enthusiasts alike. The sunshine totals remain fairly robust, suggesting the island continues to bask in warmth as it eases into the cooler months, with October's forecast hinting at a slight dip to 289 hours. Caye Caulker is undoubtedly the perfect destination for sun-seekers looking to capture those lingering summer vibes even as the seasons change.
September in Caye Caulker, Belize, presents a moderate chance of sunny weather, with a 42% likelihood of sunny days. This figure reflects a slight dip from the summer months, where July and August show higher percentages around 39% and 50%, respectively. A noticeable trend emerges as we transition from the vibrant sunny peaks of March at 76% and February at 68% towards the more temperate conditions of September. As fall approaches, travelers may find themselves balancing the potential for sunny skies with the seasonal shifts, creating a picturesque, albeit unpredictable, backdrop for their island adventures.
As summer transitions to autumn, September in Caye Caulker, Belize offers a delightful balance of daylight, clocking in at 12 hours. This pattern reflects a gradual shift from the sun-drenched days of June and July, which boast 13 hours of light, to the shorter days of October, where daylight tapers back to 11 hours. Throughout the year, daylight duration generally fluctuates between 11 to 13 hours, with peak brightness in the heart of summer and a gentle tapering as the seasons change. September's consistent 12 hours of daylight invites both relaxation and adventure, making it an ideal time to explore this tropical paradise.
In Caye Caulker, Belize, the month of September greets visitors with a mild breeze, averaging 6.0 m/s (13 mph). As summer transitions to autumn, the wind speed begins to mirror the calmness of the preceding August, which also recorded an average of 6.0 m/s (13 mph). This steadiness contrasts with the peak winds experienced in the earlier months of the year, particularly in March and May, when speeds reached 7.0 m/s (16 mph) and 7.2 m/s (16 mph), respectively. Following September, the winds are poised to soften further in October, dropping to an average of 4.5 m/s (10 mph). These trends suggest a gradual shift towards tranquility, making September an ideal time for those seeking a peaceful escape amidst the gentle caress of the Caribbean breeze.
Weather in Caye Caulker varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Caye Caulker, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, September is notably warmer, with average temperatures reaching 28°C (83°F) and maximums hitting 30°C (87°F). The month experiences higher precipitation as well, with 166 mm (6.6 in) of rain spread over 24 days, contributing to the humidity level of 82%. In contrast, January offers milder temperatures, with an average of 25°C (77°F) and a maximum of 28°C (83°F). Precipitation is lower at 93 mm (3.7 in) over 15 days, resulting in slightly higher humidity at 85%. For a more detailed look at January weather, you can visit Caye Caulker weather in January.
September and February exhibit distinct weather patterns, highlighting the transition from late summer to early spring. In September, temperatures range from a minimum of 25°C (78°F) to a maximum of 30°C (87°F), with an average of 28°C (83°F). This month is characterized by high humidity at 82% and significant rainfall, totaling 166 mm (6.6 in) across 24 days. In contrast, February features milder temperatures with a minimum of 19°C (67°F) and a maximum of 29°C (84°F), averaging around 26°C (78°F). Precipitation is notably lower at 50 mm (1.9 in) over 13 days and the humidity slightly decreases to 78%. For a detailed look at the weather in February, you can visit Caye Caulker weather in February.
In comparing the weather of September and March, September generally experiences warmer temperatures, with a minimum of 25°C (78°F) and an average high of 30°C (87°F), while March has slightly cooler temperatures, peaking at a maximum of 27°C (82°F). Additionally, September is significantly wetter, with 166 mm (6.6 in) of precipitation spread across 24 days, compared to March's much drier climate with only 45 mm (1.8 in) over 11 days. Humidity levels also differ, with September exhibiting higher humidity at 82% compared to March's 67%. For those interested in the specific conditions of March, you can find more details here: Caye Caulker weather in March.
When comparing the weather in September and April, September tends to be warmer and more humid, with average temperatures hovering around 28°C (83°F) and high humidity levels of 82%. In contrast, April offers slightly cooler temperatures, averaging 27°C (81°F), and is much drier, receiving only about 40 mm (1.6 in) of precipitation over just 7 days. September also experiences significantly higher rainfall, with 166 mm (6.6 in) falling across 24 days, making it the wetter month. For more detailed information on weather patterns in April, you can check out Caye Caulker weather in April.
When comparing the weather between September and May, we see some notable differences. September tends to be warmer, with average temperatures reaching 28°C (83°F) and maximums often hitting 30°C (87°F), while May typically has a slightly cooler average of 28°C (82°F) and maximum temperatures around 29°C (85°F). However, September is also much wetter, experiencing about 166 mm (6.6 in) of rainfall over 24 days, compared to May's 82 mm (3.2 in) over just 17 days. Furthermore, September boasts a higher humidity level at 82%, while May enjoys a more comfortable 62%. For a detailed look at May's weather specifics, you can check out Caye Caulker weather in May.
When comparing the weather in September and June, both months exhibit warm temperatures with minimums around 25°C (78°F) and averages hovering around 28°C (82°F to 83°F). However, September tends to be slightly wetter, receiving 166 mm (6.6 in) of precipitation over 24 days, while June has a higher rainfall of 218 mm (8.6 in) over 21 days. Additionally, September experiences higher humidity at 82%, compared to June's more comfortable 63%. For detailed insights, you can check Caye Caulker weather in June.
Comparing the weather conditions in September and July, both months experience similar average temperatures, with a minimum of 25°C (77°F in July) and an average of 28°C (83°F) for both months. However, July sees a slightly lower maximum temperature of 29°C (85°F) compared to September's 30°C (87°F). One of the most significant differences lies in precipitation; September receives 166 mm (6.6 in) over 24 days, whereas July has only 118 mm (4.6 in) across 20 days, leading to a much higher humidity level of 82% in September compared to July’s 66%. For those interested in the specifics of July’s weather, you can explore more at Caye Caulker weather in July.
In comparing the weather between August and September, both months exhibit similar average temperatures, with September experiencing a slight dip in minimum temperature at 25°C (78°F) compared to August's 26°C (78°F). However, September is characterized by increased precipitation, recording 166 mm (6.6 in) over 24 days, while August saw 147 mm (5.8 in) across 22 days. Additionally, September has a higher humidity level of 82%, contrasting with August's 73%. For more detailed insights on the weather in August, you can check out Caye Caulker weather in August.
In September, the weather features warm temperatures with a minimum of 25°C (78°F) and an average high of 30°C (87°F), complemented by significant rainfall of 166 mm (6.6 in) over 24 days and humidity levels around 82%. October sees a slight decline in average temperatures, with a minimum of 24°C (76°F) and a similar maximum of 30°C (86°F). However, the month experiences a notable increase in precipitation, reaching 292 mm (11.5 in) also over 24 days, and humidity rises to 86%. Thus, while both months maintain warm temperatures, October is characterized by increased rainfall and humidity compared to September. For more detailed information, visit Caye Caulker weather in October.
In comparing the weather between September and November, it is evident that both months experience warm temperatures, but November tends to be slightly cooler overall. In September, the minimum temperature averages around 25°C (78°F), peaking at a maximum of 30°C (87°F), while November sees a minimum of 22°C (73°F) and a maximum of 29°C (84°F). Humidity levels are relatively high in both months, with November reaching 87% compared to September's 82%. Notably, November also experiences increased precipitation, totaling 240 mm (9.5 in) over 20 days, in contrast to September's 166 mm (6.6 in) over 24 days. For more detailed weather information, visit Caye Caulker weather in November.
When comparing the weather in September and December, we notice a shift from warmer to milder temperatures. September typically sees a minimum temperature of 25°C (78°F) and an average of 28°C (83°F), with highs reaching up to 30°C (87°F). In contrast, December's temperatures are slightly cooler, with a minimum of 20°C (69°F) and an average of 26°C (78°F), peaking at 28°C (83°F). Additionally, September is characterized by heavier rainfall, recording 166 mm (6.6 in) over 24 days, while December experiences much less precipitation at 93 mm (3.6 in) across 18 days. Humidity levels remain high in both months, with December being more humid at 87% compared to September's 82%. For more insights on weather patterns during this month's stay, check out Caye Caulker weather in December.
In September, Caye Caulker experiences a unique shift in weather that sets it apart from the rest of the year. The warm temperatures, typically reaching a maximum of 30°C, create a tropical ambiance, while high humidity levels contribute to a sultry feel. However, this month is also characterized by frequent rainfall, with nearly 24 days of precipitation, making it one of the wettest periods. Despite the rain, the island retains its charm, offering lush landscapes and vibrant scenery. For a deeper dive into the island's yearly weather conditions, be sure to check out Caye Caulker Climate.