Last updated: August 21, 2025
September in Belize City invites a warm embrace, with maximum temperatures reaching up to 33°C (92°F) and a sultry average of 29°C (84°F). The evenings provide a mild retreat, with temperatures dipping to around 25°C (77°F). However, this month also brings significant rainfall, as 194 mm (7.6 in) of precipitation falls across an impressive 27 days. With humidity levels soaring at 82%, the atmosphere is undeniably tropical, making September both a refreshing and challenging time for residents and visitors alike.
In September, Belize City experiences warm and inviting weather, with temperatures typically ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F). This month features an average temperature of 29°C (84°F), keeping it consistent with the sweltering trends of the preceding summer months. Notably, the minimal temperature is slightly higher than those seen earlier in the year, reflecting the ongoing tropical warmth. As the rainy season progresses, the heat remains accompanied by the potential for afternoon showers, making September a vibrant time to experience the lush landscapes and vibrant culture of Belize City.
In September, Belize City experiences a noticeable uptick in precipitation, with an average of 194 mm (7.6 in) of rain falling over 27 days. This pattern marks a continuation of the wet season, showing a distinct rise from the preceding months—particularly when compared to August's 184 mm (7.2 in). As the summer months transition into fall, the rainfall peaks just before October's even heavier average of 280 mm (11.0 in), underscoring the region's vulnerability to tropical storms and an overall trend of increasing moisture. This month serves as a crucial bridge in Belize's climate, where lush landscapes thrive amid the intensified rain showers, creating a vibrant and dynamic environment.
In September, humidity in Belize City reaches 82%, marking a notable rise from the summer months. This increase signals the transition from the drier days of late spring, where humidity dipped to around 62%, into a more tropical atmosphere. The trend reveals a gradual ascent in moisture levels starting from March's 67%, peaking almost uniformly in the late year with October and November both exceeding 86%. As the peak tourist season approaches, visitors should be prepared for the humid conditions that characterize the region, especially as the month shifts towards the rainy season, where humid air envelops the city.
In September, Belize City experiences a consistent UV Index of 13, categorized as extreme, which means you should be cautious during sun exposure. With a burn time of just 10 minutes, it’s crucial to protect your skin, especially since the high levels of UV radiation have remained stable throughout the summer months. This trend showcases the persistent intensity of the sun in Belize during this period, mirroring the previous months of July and August. As you enjoy the vibrant atmosphere and stunning scenery, be sure to take the necessary precautions to minimize sunburn risk. For more information, check out the Belize City UV Index.
UV Risk Categories
September in Belize City brings 295 hours of sunshine, a delightful continuation of the vibrant summer months. Following the sunny peak in May with 326 hours, the city experiences a gradual but enjoyable decline in daylight, with August not far behind at 320 hours. This transitional month stands out as it sits comfortably above the annual average for sunshine, allowing residents and visitors to savor the festive atmosphere before the slightly cloudier season sets in. As October approaches with 279 hours, the warmth of September acts as a perfect bridge, maintaining a sunlit charm that embodies the spirit of Belize. Whether exploring the bustling markets or lounging by the coast, September ensures that the sun remains a cherished companion in this tropical paradise.
September in Belize City holds a moderate likelihood of sunny weather, with only a 38% chance of clear skies. As the rainy season begins to wane, residents and visitors can expect a shift from the heavier downpours typical in June and July, where chances of sunshine dip to 32% and 34%, respectively. While September's sun potential is slightly higher than August's 44%, it remains lower than the peak months of March and February, which boast probabilities over 70%. As the month progresses, the chances of encountering sunnier days generally improve, hinting that while rain may still make a cameo, there’s hope for plenty of bright moments in this tropical paradise.
As September unfolds in Belize City, daylight lasts for a pleasant 12 hours, mirroring the trend seen in August and the preceding spring months. The transition from the longer days of summer in June and July, which bask in 13 hours of sunlight, gradually shifts towards the shorter days of the approaching fall. This steady rhythm of daylight duration highlights the tropical climate’s relatively stable pattern, where days remain delightfully bright throughout the year, dipping back to 11 hours as autumn approaches in October. Enjoying ample daylight allows for vibrant outdoor activities, making September a fantastic time to explore Belize's picturesque landscapes and local culture.
As September arrives in Belize City, the winds continue to whisper their gentle tales, averaging around 4.0 m/s (9 mph). This slight dip in wind speed from the summer's peak reflects a transition into the autumn season, following the mild breezes of August. Notably, September's winds are consistent with earlier months, echoing February's gentle currents, yet are a precursor to the more tranquil breezes of October. With the lush landscapes still vibrant, the soft winds create a tranquil atmosphere, inviting both locals and visitors to savor the changing season in this tropical paradise.
Weather in Belize City varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Belize City, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather conditions of September and January, September is characterized by notably higher temperatures, with minimums reaching 25°C (77°F) and averages around 29°C (84°F), peaking at 33°C (92°F). It also experiences significant rainfall, accumulating 194 mm (7.6 in) over 27 days, and maintains a high humidity level of 82%. In contrast, January offers milder temperatures, featuring a minimum of 18°C (64°F) and an average of 25°C (77°F), reaching a maximum of 30°C (86°F). Precipitation is also lower in January, with 81 mm (3.2 in) over 14 days, and a slightly higher humidity level of 85%. For more detailed insights on January weather, you can check Belize City weather in January.
September weather in Belize City is significantly warmer and more humid than February. With temperatures averaging around 29°C (84°F) and highs reaching up to 33°C (92°F), it's the tail end of the warm season with a high level of precipitation at 194 mm (7.6 in) over 27 days. In contrast, February experiences milder conditions, with average temperatures at 26°C (79°F) and maximums of 31°C (87°F), alongside much lower rainfall of only 50 mm (2.0 in) over 17 days. While both months have high humidity levels, September’s 82% creates a more oppressive atmosphere compared to February's 78%. For more detailed information about February weather, check out Belize City weather in February.
In comparing the weather between September and March, one can note distinct differences in temperature and humidity. September experiences warmer temperatures, ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F), with an average of 29°C (84°F). It also sees significant precipitation, accumulating 194 mm (7.6 in) over 27 rainy days, contributing to a high humidity level of 82%. In contrast, March offers milder conditions with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 30°C (87°F), averaging 26°C (80°F). This month is characterized by much less precipitation, totaling 51 mm (2.0 in) across 14 days, and a lower humidity of 67%. For more detailed information, visit Belize City weather in March.
When comparing the weather in September and April, September features warmer temperatures overall, with an average of 29°C (84°F) and maximums reaching up to 33°C (92°F), similar to April’s maximums but with a slightly lower average of 28°C (82°F). However, September is significantly wetter, receiving 194 mm (7.6 in) of precipitation over 27 days, while April is much drier with only 53 mm (2.1 in) across 11 days. Additionally, humidity levels in September average around 82%, compared to 62% in April, making September feel more tropical and muggy. For more details on April's weather, check out Belize City weather in April.
In comparing the weather of September and May, both months exhibit warm temperatures, with September having a slightly higher average and maximum temperature. September features a minimum of 25°C (77°F) and averages 29°C (84°F), while May starts just a touch cooler with a minimum of 23°C (74°F) and an average of 28°C (83°F). However, September is notably wetter, receiving 194 mm (7.6 in) of precipitation over 27 days, compared to May's more manageable 100 mm (3.9 in) over 21 days. Additionally, humidity levels in September are considerably higher at 82%, creating a more humid environment than May’s 62%. For more detailed information, you can check Belize City weather in May.
In comparing the weather of September and June, both months exhibit warm temperatures with averages around 29°C (84°F). However, September tends to have slightly higher temperatures with a maximum of 33°C (92°F) compared to June's peak of 34°C (94°F). Notably, September experiences significantly more precipitation, totaling 194 mm (7.6 in) over 27 days, whereas June sees 232 mm (9.1 in) distributed over just 25 days. Additionally, September’s humidity is notably higher at 82%, compared to June's 63%. For more details on weather conditions specific to June, you can check Belize City weather in June.
In comparing the weather of September and July, both months exhibit similar minimum temperatures of around 25°C (77°F), but September tends to be slightly warmer overall with an average temperature of 29°C (84°F) compared to July's 28°C (83°F). July enjoys a bit more comfortable conditions with lower humidity at 66%, while September's humidity rises significantly to 82%, making it feel more oppressive. Additionally, September experiences more precipitation, with 194 mm (7.6 in) over 27 days, compared to July's 161 mm (6.3 in) during the same number of days. For a closer look at July's specific climate, check out Belize City weather in July.
In comparing the weather of September and August, both months showcase similar average temperatures, ranging from a minimum of 24-25°C (76-77°F) to a maximum of 33°C (92°F), with an average of 29°C (84°F). However, September experiences slightly more precipitation, totaling 194 mm (7.6 in) over 27 days, compared to August's 184 mm (7.2 in) across 28 days. Additionally, September has a higher humidity level at 82%, compared to August's 73%, making it feel a bit more muggy. For a closer look at August's weather in Belize City, you can check out Belize City weather in August.
In comparing the weather between September and October, both months experience similar high temperatures, with September averaging 29°C (84°F) and October slightly lower at 28°C (82°F). However, October sees a notable decrease in minimum temperatures, dropping from 25°C (77°F) in September to 21°C (71°F). Precipitation is more pronounced in October, with 280 mm (11.0 in) recorded over 25 days, compared to 194 mm (7.6 in) over 27 days in September. The humidity also rises slightly in October, reaching 86% compared to September's 82%. For more detailed insights, check out Belize City weather in October.
In September, the weather is notably warmer with average temperatures reaching 29°C (84°F) and maximums peaking at 33°C (92°F). This month experiences significant precipitation, accumulating to 194 mm (7.6 in) over 27 days, coupled with high humidity levels of 82%. In contrast, November sees a slight dip in temperatures, with averages around 26°C (79°F) and maximums at 31°C (89°F). Rainfall is slightly lower at 177 mm (7.0 in) over 21 days, and humidity rises to 87%. For more details on November's weather in Belize City, you can check Belize City weather in November.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F), and an average of 29°C (84°F). The month sees higher precipitation levels at 194 mm (7.6 in) spread across 27 days, contributing to a humid atmosphere with an average humidity of 82%. In contrast, December experiences cooler temperatures, with a minimum of 17°C (62°F) and a maximum of 30°C (86°F), averaging 25°C (77°F). Precipitation drops significantly to 76 mm (3.0 in) over 20 days, though humidity remains slightly higher at 87%. For more detailed information on December weather, you can visit Belize City weather in December.
As September rolls in, Belize City experiences a vibrant shift in weather patterns, characterized by warm temperatures and increased rainfall. With an average temperature hovering around 29°C (84°F), the city feels noticeably warm and humid, with humidity levels reaching up to 82%. This month stands out due to its significant precipitation, as September often witnesses the highest rainfall of the year, leading to frequent showers on nearly 27 days. While the tropical climate offers ample warmth, the combination of heat and moisture creates a unique atmosphere that may differ greatly from drier months. For a deeper dive into the seasonal trends, you can explore Belize City Climate.