Last updated: April 22, 2025
Experience the vibrant September weather in Santa Catarina, Mexico, where daily temperatures soar with a maximum of 35°C (96°F) and average around a comfortable 27°C (81°F). As the tropical atmosphere envelops the region, visitors can expect a refreshing minimum temperature of 20°C (68°F). Although September brings 200 mm (7.9 in) of rainfall over approximately 17 days, the lush landscapes created by this precipitation contrast beautifully with the surrounding scenery. With a humidity level lingering at 74%, the weather offers a warm, tropical feel that perfectly complements the local culture and activities.
In September, Santa Catarina experiences a warm transition from the peak summer heat. With minimum temperatures around 20°C (68°F) and an average of 27°C (81°F), the month offers a pleasant warmth that's ideal for outdoor activities. While the maximums can reach up to 35°C (96°F), this slight dip from August's highs indicates the gradual shift towards fall. The consistency in warmer nights compared to earlier months, such as July and August, reflects the region's tropical climate, making September a comfortable choice for visitors seeking to enjoy the lingering sun before temperatures begin to drop in October.
In September, Santa Catarina experiences a dramatic peak in precipitation, with 200 mm (7.9 in) of rainfall spread across 17 days. This significant amount marks a continuation of the rainy season, where August already laid the groundwork with 126 mm (5.0 in) over 14 days. The transition from the drier months of May and April, which saw virtually no rain, to this peak underscores the shift towards a wetter climate pattern as summer gives way to fall. As the entire region braces for this monsoon-like deluge, it highlights the vital role of September rains in replenishing local water sources and rejuvenating the landscape after the dry spells earlier in the year.
In September, humidity in Santa Catarina, Mexico reaches 74%, marking a peak in the region's humid climate as summer transitions into fall. This month continues the upward trend observed over the preceding months, where humidity levels steadily increased from 63% in April to 73% in August. The rise reflects the lingering effects of the summer heat, bringing a palpable stickiness to the air. Following September, humidity slightly dips to 73% in October, but overall, the data illustrates a general trend of elevated moisture levels as the year progresses, particularly during the summer months. The significant highs in July, August, and September underscore the warm, humid conditions typical of this vibrant tropical region.
As summer transitions to fall, September in Santa Catarina, Mexico, maintains a high UV Index of 12, placing it in the extreme exposure category. This signifies a consistent trend observed throughout the warmer months, where the UV Index climbed from 10 in February to a peak of 13 from April to June. Just like the months preceding it, you’ll need to take caution with a burn time of only 10 minutes. As the days shorten and temperatures drop, the UV Index will gradually decrease, but the effects of that September sun are still to be taken seriously. For a deeper understanding of UV levels throughout the year, check the Santa Catarina UV Index.
UV Risk Categories
As summer transitions into fall in Santa Catarina, Mexico, September shines brightly with an impressive 294 hours of sunshine, making it a delightful month for outdoor enthusiasts. Following the peak of 357 hours in May, sunny days remain plentiful through the summer, with only a slight dip in sunlight as the autumn months approach. This gentle decline continues into October with 302 hours, while November and December see fewer sunny hours at 277 and 270 respectively. Overall, September serves as a sweet spot, where lingering summer warmth still invites visitors to bask in the sun before the cooler months set in, reflecting a vibrant blend of seasonal charm.
In September, Santa Catarina experiences a 51% chance of sunny weather, marking a notable decline from the sunnier months of May and June, which boast probabilities of 77% and 73%, respectively. After the high humidity and frequent rains seen in August, September ushers in a transitional phase, where the likelihood of sunshine hovers around the middle of the scale. This makes it a perfect time for visitors who appreciate a mix of sun and the lingering warmth before the cooler months of autumn set in. As the year progresses towards October, the chances of sunshine noticeably rebound to 67%, indicating a beautiful shift back to brighter days.
As September arrives in Santa Catarina, Mexico, daylight begins to wane, offering residents a harmonious blend of sun and shadow with 12 hours of daylight. Following the peak summer months of June and July, which basked in a generous 13 hours of sun, the days gradually shorten as autumn approaches. This transition reflects a gentle rhythm of nature, as daylight lingers throughout the early fall but begins to retreat alongside the vibrant hues of summer. Despite this decrease, September maintains a sense of brightness, inviting both locals and visitors to relish the warm climate while adjusting to the impending shift towards shorter days in October.
As we transition into September in Santa Catarina, Mexico, the wind carries a gentle whisper, with average speeds dipping to 1.5 m/s (3 mph), a trend mirrored from August. This slight decrease reflects the calmness that often accompanies the onset of autumn, as summer’s breezy embrace begins to wane. Throughout the year, winds have generally maintained a steady pace, hovering around 1.5 to 1.9 m/s, but September signifies a subtle shift towards even more tranquil conditions. As the days grow shorter and cooler, the gentle September winds create an inviting atmosphere perfect for outdoor relaxation and enjoying the vibrant colors that autumn brings.
The weather in Santa Catarina 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 Santa Catarina and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a minimum of 20°C (68°F) to a scorching maximum of 35°C (96°F), with an average of 27°C (81°F). This month also sees significant rainfall, totaling 200 mm (7.9 in) over 17 days, coupled with a high humidity level of 74%. In contrast, January is considerably cooler, featuring temperatures that dip to a minimum of 8°C (46°F) and reach a maximum of 32°C (91°F), with an average temperature of 19°C (66°F). Precipitation is minimal during this month, with only 6 mm (0.2 in) of rain over just 1 day, resulting in a lower humidity of 68%. For a more detailed comparison of the weather in January, you can visit Santa Catarina weather in January.
September and February present stark contrasts in weather. In September, temperatures soar with a minimum of 20°C (68°F) and an average of 27°C (81°F), peaking at a scorching 35°C (96°F). This month is quite humid, with an average humidity of 74% and significant rainfall, totaling 200 mm (7.9 in) over 17 days. In contrast, February boasts much cooler temperatures, with a minimum of 7°C (46°F), an average of 19°C (67°F), and a maximum of 32°C (89°F). The precipitation drops dramatically to only 12 mm (0.5 in) over just 1 day, and humidity levels are slightly lower at 66%. For more details about the weather in February, check out Santa Catarina weather in February.
September tends to be much warmer and more humid than March, with average temperatures reaching 27°C (81°F) compared to March's cooler average of 21°C (70°F). September also experiences significantly more precipitation, with around 200 mm (7.9 in) spread over 17 days, while March sees virtually no rainfall, with just 2 mm (0.1 in) over the entire month. Additionally, the humidity is higher in September at 74%, compared to 65% in March. For those interested in exploring the weather specifics of Santa Catarina in March, you can check out this link: Santa Catarina weather in March.
When comparing the weather in September to that of April, notable differences emerge. September experiences warmer temperatures, with a minimum of 20°C (68°F) and an average of 27°C (81°F), contrasted with April's cooler minimum of 11°C (53°F) and an average of 23°C (74°F). Additionally, September is characterized by significant rainfall, with 200 mm (7.9 in) of precipitation over 17 days, while April remains dry with no precipitation recorded. Humidity levels also vary, being higher in September at 74% compared to April's 63%. For more detailed information, check out Santa Catarina weather in April.
When comparing the weather in September and May, notable differences emerge in both temperature and precipitation. September presents a warmer climate with an average temperature of 27°C (81°F), peaking at a high of 35°C (96°F), and experiences significant rainfall, with precipitation occurring on 17 days totaling 200 mm (7.9 in) and a humidity level of 74%. In contrast, May brings a drier and hotter experience, with temperatures averaging 25°C (78°F) and reaching a maximum of 38°C (100°F). Unlike September, May records no precipitation throughout the month and maintains a lower humidity level of 63%. For a more detailed look at May weather, you can visit Santa Catarina weather in May.
In comparing the weather between September and June, September typically presents warmer temperatures with a minimum of 20°C (68°F), an average of 27°C (81°F), and a maximum reaching 35°C (96°F). It is also characterized by significantly higher precipitation, with 200 mm (7.9 in) spread over 17 days and a humidity level of 74%. In contrast, June experiences slightly cooler temperatures, with a minimum of 16°C (61°F), an average of 28°C (82°F), and a peak of 38°C (101°F). June is much drier, with only 25 mm (1.0 in) of rain occurring on just one day and a lower humidity of 66%. For more details on weather conditions in June, you can visit Santa Catarina weather in June.
In comparing the weather between September and July, July tends to be hotter with average temperatures reaching 29°C (84°F) and maximums peaking at 38°C (102°F), while September has a slightly cooler average of 27°C (81°F) and a maximum of 35°C (96°F). However, September is significantly wetter, receiving about 200 mm (7.9 in) of precipitation over 17 days, compared to July's 48 mm (1.9 in) over just 7 days. Humidity levels are quite similar, with July at 71% and September slightly higher at 74%. Overall, July is characterized by its heat, while September brings increased rainfall and milder temperatures. For more details, visit Santa Catarina weather in July.
In comparing the weather between September and August, September experiences slightly cooler temperatures, with a minimum of 20°C (68°F) and an average of 27°C (81°F), compared to August's minimum of 22°C (72°F) and average of 29°C (84°F). August also boasts higher maximum temperatures, reaching up to 37°C (99°F), while September's maximum peaks at 35°C (96°F). Precipitation is more prominent in September, with 200 mm (7.9 in) falling over 17 days, compared to August's 126 mm (5.0 in) over 14 days. Humidity levels remain similar, with September at 74% and August at 73%. For more details, visit Santa Catarina weather in August.
September typically experiences warmer temperatures, with average highs reaching up to 35°C (96°F) and a minimum of 20°C (68°F), while October sees slightly cooler weather, with average highs of 37°C (98°F) but a lower minimum of 14°C (58°F). Additionally, September is characterized by significantly higher precipitation, receiving around 200 mm (7.9 in) over 17 days, compared to October's modest 24 mm (0.9 in) across just 5 days. Humidity levels remain relatively stable between the two months, with September at 74% and October slightly lower at 73%. For a detailed look at October weather in Santa Catarina, check out Santa Catarina weather in October.
In September, the weather tends to be warmer and more humid, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 35°C (96°F) and an average of 27°C (81°F). The month also sees a significant amount of rainfall, with about 200 mm (7.9 in) of precipitation over 17 days, resulting in a humidity level of 74%. In contrast, November experiences cooler temperatures, with a minimum of 13°C (56°F) and an average of 23°C (74°F), while still reaching a maximum of 36°C (97°F). November is notably drier, receiving only 29 mm (1.2 in) of rain across just 2 days, contributing to a slightly lower humidity level of 71%. For more detailed information, check out Santa Catarina weather in November.
In September, the weather is warm and humid, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 35°C (96°F) and an average of 27°C (81°F). This month also experiences significant rainfall, with about 200 mm (7.9 in) of precipitation spread over 17 days, resulting in a humidity level of 74%. In contrast, December brings a cooler climate, with temperatures dropping to a minimum of 9°C (48°F) and peaking at 31°C (88°F), averaging around 20°C (67°F). Precipitation is minimal, totaling just 8 mm (0.3 in) over a single day, and humidity decreases slightly to 69%. For more detailed insights on the weather in December, you can check Santa Catarina weather in December.
As September rolls in, Santa Catarina experiences a distinct shift in weather, characterized by warmer temperatures and increased humidity. Unlike the drier months that precede it, this time of year sees average highs reaching a balmy 27°C (81°F) and a significant uptick in rainfall, with nearly half the month experiencing precipitation. These conditions create a lush, vibrant landscape, making it a unique time to visit. While the warmth invites outdoor activities, the humidity combined with frequent showers can bring a refreshing coolness that sets September apart from the rest of the year. For an in-depth look at how this month compares to others, explore the complete Santa Catarina Climate guide.