Last updated: August 21, 2025
San Ignacio, Belize, in September experiences warm temperatures ranging from a maximum of 38°C (100°F) to an average of 28°C (82°F), with cooler nights dropping to a minimum of 21°C (71°F). This month is characterized by high humidity at 82%, creating a tropical ambience. Rain is frequent, with 128 mm (5.1 in) of precipitation recorded over 23 days, making it one of the wetter months of the year. Visitors should be prepared for both sunny spells and occasional showers while enjoying the lush scenery and vibrant culture of this picturesque town.
September in San Ignacio, Belize, brings warm and inviting temperatures that seamlessly transition from the summer months. With nighttime lows averaging 21°C (71°F), the evenings remain pleasantly mild. The daytime temperatures peak at 38°C (100°F), which is characteristic of the region's tropical climate, making it one of the warmer months. Overall, the consistent average temperature of 28°C (82°F) provides a perfect balance for visitors looking to enjoy the lush landscapes and vibrant culture without the extreme heat of earlier summer months. As the autumn approaches, September offers an ideal setting to explore the wonders of Belize while savoring the tail end of the warm season.
In September, San Ignacio, Belize experiences a notable surge in precipitation, with 128 mm (5.1 in) of rain falling over an average of 23 days. This marks a significant increase compared to the preceding months, especially from the relatively dry spells of March and April. As the region transitions into a wetter season, September's rainfall not only supports the lush landscape but also sets the stage for the heavy precipitation that follows in October. The consistent rain can be attributed to tropical systems affecting the area, underscoring the importance of this month in the overall climatic pattern of San Ignacio. This trend of increased rainfall in September hints at the dynamic weather that characterizes the late rainy season, highlighting its crucial role in replenishing the environment and sustaining local ecosystems.
In September, San Ignacio, Belize, experiences a noticeable uptick in humidity, reaching 82%. This rise follows a summer pattern, where humidity levels begin to rebound after the relatively drier months of April and May, both at 62%. As the wet season progresses, the humidity consistently hovers in the 70s through August, before September brings a return to the high 80s that characterize the following months, with October and November showcasing humidity levels of 86% and 87%, respectively. Overall, September serves as a transitional month, balancing the lingering summer warmth with an increase in moisture, setting the stage for Belize's lush, tropical landscapes in the months to come.
In September, San Ignacio, Belize, experiences a UV Index of 13, categorizing the exposure as extreme with a burn time of just 10 minutes. This month ties with several summer months, maintaining high UV levels that have been consistent since April. As the year progresses towards its end, UV exposure remains significantly elevated, making sun safety more crucial than ever. Visitors should take heed of the frequent warnings throughout the year, particularly during these peak months. To learn more about UV Index levels throughout the year in San Ignacio, visit San Ignacio UV Index.
UV Risk Categories
September in San Ignacio, Belize, bathes the town in a delightful 280 hours of sunshine, making it a perfect time for outdoor adventures. The sunny disposition is part of a broader trend observed throughout the year, with spring and early summer months, particularly May at 317 hours, showcasing the year’s peak brilliance. As the long summer days transition into fall, sunshine hours gently taper off, yet September still glimmers at the tail end of this radiant stretch. The consistency of sunshine across the months, with particularly bright months from March to August, ensures that even as the days begin to shorten, the warmth of the sun continues to enhance the vibrant landscape of San Ignacio. With September firmly in this sunny tradition, it invites visitors to explore its natural beauty and cultural richness under a splendid sky.
In San Ignacio, Belize, the likelihood of sunny weather in September stands at 34%, positioning it as a transition month from the wetter summer season into the more favorable fall months. Compared to July and August, which experience slightly lower chances of sunshine at 31% and 39% respectively, September shows a modest improvement. However, it still trails behind peak sunny months like March, at 64% and February, at 59%. As the year progresses towards October, the likelihood of sunshine increases to 43%, suggesting that while September offers some sunny days, it is best regarded as a precursor to the clearer skies that await in the following months.
In San Ignacio, Belize, September marks a transition in daylight duration, maintaining a consistent 12 hours of sunlight. This mirrors the sunlight seen in both April and May, showcasing a peak in brightness as the rainy season approaches its end. From March through July, the region enjoys an increase in daylight, peaking at 13 hours during the summer months. However, as September rolls in, the daylight slowly begins to wane, foreshadowing the shorter days of autumn. Overall, September's daylight aligns with a rhythm that emphasizes a balance between the abundant brightness of the summer and the gradual return to the shorter days of the fall season.
September in San Ignacio, Belize, ushers in a gentle breeze, with an average wind speed of 2.3 m/s (5 mph). This marks a slight decrease from the more favorable gusts of the summer months, where winds peaked at 3.2 m/s (7 mph) in May. As the rainy season approaches, the winds begin to quiet, reflecting a broader trend of decreasing wind speeds that continue into the fall months. This transition not only heralds the start of a more humid climate but also creates a serene atmosphere, perfect for enjoying the vibrant natural beauty of the area. Residents and visitors alike can delight in the mild September breezes, feeling a sense of calm as the winds whisper through the lush canopies.
Weather in San Ignacio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Ignacio, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is characterized by warmer temperatures, with a minimum of 21°C (71°F) and an average of 28°C (82°F), peaking at a high of 38°C (100°F). The month experiences significant rainfall, with 128 mm (5.1 in) spread over 23 days and a humidity level of 82%. In contrast, January brings cooler temperatures, with a minimum of 13°C (57°F), an average of 23°C (74°F), and a maximum of 37°C (100°F). Precipitation decreases sharply to 43 mm (1.7 in) over just 11 days, while humidity rises slightly to 85%. For more details, check out San Ignacio weather in January.
September and February present contrasting weather patterns, highlighting the transition from late summer to early spring. In September, temperatures soar with a minimum of 21°C (71°F) and an average of 28°C (82°F), peaking at a scorching 38°C (100°F). The month is also marked by significant rainfall, totaling 128 mm (5.1 in) across 23 days, accompanied by high humidity at 82%. In contrast, February offers a much cooler climate with a minimum temperature of 11°C (51°F), an average of 25°C (77°F), and a maximum of 37°C (99°F). Precipitation is notably lower at 37 mm (1.4 in) over just 12 days, with humidity at a mild 78%. For more details, you can check San Ignacio weather in February.
In September, the weather is characterized by warmer temperatures, with a minimum of 21°C (71°F) and an average of 28°C (82°F), reaching highs of up to 38°C (100°F). This month also sees considerable rainfall, averaging 128 mm (5.1 in) over 23 days, and high humidity levels at 82%. In contrast, March experiences slightly cooler temperatures, with a minimum of 16°C (61°F) and an average of 26°C (79°F), while still reaching maximum temperatures similar to September at 38°C (101°F). Precipitation in March is significantly lower, averaging only 27 mm (1.0 in) over just 9 days, and humidity is also reduced to 67%. For more details on March weather, you can visit San Ignacio weather in March.
In comparing the weather between September and April, we notice some distinct differences. September tends to be more humid, with an average humidity of 82%, accompanied by milder temperatures, where the minimum is 21°C (71°F) and the maximum reaches up to 38°C (100°F). In contrast, April exhibits a slightly lower humidity level of 62% and showcases a wider temperature range, with minimums starting at 16°C (61°F) and maximums soaring to 41°C (107°F). Moreover, September experiences significantly more rainfall, totaling 128 mm (5.1 in) over 23 days, while April is drier, with only 38 mm (1.5 in) of precipitation over just 7 days. For further details on April's climate, you can visit San Ignacio weather in April.
September and May exhibit noticeable differences in weather patterns. While September has a minimum temperature of 21°C (71°F) and an average of 28°C (82°F), May showcases slightly warmer conditions with a minimum of 20°C (68°F) and an average of 29°C (84°F). Both months experience high maximum temperatures, with September reaching up to 38°C (100°F) and May hitting 39°C (103°F). However, September is significantly wetter, receiving 128 mm (5.1 in) of precipitation across 23 days, compared to May's 74 mm (2.9 in) over 16 days. Additionally, September's humidity is typically higher at 82% versus May's 62%. This stark contrast highlights the transition from the wetter season in September to the slightly drier conditions of May. For more specific weather details, you can check San Ignacio weather in May.
In comparing the weather between September and June, both months have similar average temperatures, hovering around 28°C (82°F). However, September tends to be slightly warmer at its maximum, reaching up to 38°C (100°F), compared to June's peak of 37°C (99°F). Precipitation levels are notably higher in June, with 173 mm (6.8 in) recorded over 24 days, while September experiences 128 mm (5.1 in) over 23 days. Additionally, June has a much lower humidity level at 63%, making it feel less muggy than September, which has a humidity of 82%. For a more detailed look at June weather patterns, you can explore San Ignacio weather in June.
In comparing the weather of September and July, we observe a few notable differences. September tends to be slightly hotter, with maximum temperatures reaching up to 38°C (100°F), compared to July's maximum of 36°C (97°F). Both months have similar average temperatures of around 28°C (82°F) and minimums of 21°C (69°F in July, 21°C in September). However, September is significantly wetter, with 128 mm (5.1 in) of rainfall spread over 23 days, whereas July sees less precipitation at 94 mm (3.7 in) over 21 days. Additionally, humidity levels are notably higher in September at 82%, compared to 66% in July, making September feel more muggy. For a more detailed look at July's weather conditions, visit San Ignacio weather in July.
In comparing the weather between September and August, we see that September experiences a slightly higher maximum temperature of 38°C (100°F), compared to August's maximum of 37°C (99°F). The average temperatures remain relatively similar, with September averaging 28°C (82°F) and August 28°C (83°F). Notably, September also sees more precipitation, totaling 128 mm (5.1 in) over 23 days, whereas August has 103 mm (4.1 in) over 22 days. Additionally, humidity levels are higher in September at 82%, compared to August's 73%. For more detailed information, you can refer to San Ignacio weather in August.
In September, the weather tends to be quite warm, with temperatures ranging from a minimum of 21°C (71°F) to a maximum of 38°C (100°F) and an average of 28°C (82°F). Rainfall is significant, totaling 128 mm (5.1 in) over 23 days, with humidity consistently high at 82%. By October, the temperatures drop slightly, featuring a minimum of 18°C (64°F), an average of 27°C (80°F), and a maximum of 37°C (98°F). Precipitation increases to 167 mm (6.6 in) over the same 23 days, and humidity rises to 86%. For more detailed information about October weather, you can visit San Ignacio weather in October.
In September, temperatures are notably warmer, with a minimum of 21°C (71°F) and an average high reaching up to 38°C (100°F), making it the hotter month compared to November, which has a cooler minimum of 15°C (60°F) and a maximum of 33°C (92°F). While September experiences a higher average temperature of 28°C (82°F), November cools down to an average of 25°C (76°F). Precipitation is relatively high in both months, with September receiving 128 mm (5.1 in) over 23 days and November slightly less at 112 mm (4.4 in) across 18 days. The humidity remains high in both months, peaking at 82% in September and reaching 87% in November, adding to the overall atmosphere. For more details on the weather specifics, check San Ignacio weather in November.
In September, the weather is noticeably warmer with temperatures ranging from a minimum of 21°C (71°F) to a scorching maximum of 38°C (100°F), and an average of 28°C (82°F). The month experiences significant precipitation, totaling 128 mm (5.1 in) over 23 days, combined with a humidity level of 82%. In contrast, December brings cooler temperatures, with a range from a minimum of 12°C (53°F) to a maximum of 34°C (93°F) and an average temperature of 24°C (75°F). Precipitation in December drops to 53 mm (2.1 in) over 14 days, and humidity rises slightly to 87%. For more details on the December weather, you can visit San Ignacio weather in December.
September in San Ignacio presents a distinct experience compared to other months, marked by higher humidity levels and frequent rainfall that can influence your daily plans. With temperatures reaching as high as 38°C (100°F) during the day, the air can feel quite heavy, particularly as it lingers at an average of 82% humidity. The 128 mm of precipitation falling over approximately 23 days means that afternoon showers are likely, providing a refreshing break amidst the heat. This combination of warmth and moisture creates a lush environment but also calls for preparedness in your outdoor activities. For a deeper understanding of annual weather trends in San Ignacio, visit San Ignacio Climate.