Last updated: April 22, 2025
In September, Santa Rosalia, Mexico experiences a blend of warmth and moisture, with maximum temperatures reaching up to 31°C (87°F) and an average of 21°C (71°F). The month showcases a significant amount of rainfall, totaling 218 mm (8.6 in) over approximately 23 days, resulting in a captivatingly lush environment. With humidity levels soaring to 84%, visitors can expect a tropical atmosphere that enhances the coastal charm of this vibrant town. Embrace the dynamic weather as it plays a key role in the beauty and allure of Santa Rosalia during early autumn.
In September, Santa Rosalia experiences pleasant temperatures, with minimums hovering around 15°C (60°F) and daytime highs reaching 31°C (87°F). The average temperature sits comfortably at 21°C (71°F), marking a transition from the warmth of summer to the gentle embrace of early autumn. This month maintains a consistent climate, similar to August, where warm days blend seamlessly with cooler nights, making it a delightful time for outdoor exploration or relaxation by the coast. Overall, September's climate invites visitors to enjoy the beautiful scenery and vibrant culture of this charming Mexican destination.
In September, Santa Rosalia experiences one of its wettest months, with a striking 218 mm (8.6 in) of precipitation over 23 days. This marks a significant peak following the already substantial rain in the preceding months of July and August, which recorded 204 mm (8.0 in) and 193 mm (7.6 in), respectively. The surge in rainfall during September reflects the region's transition deeper into the rainy season, contributing to an overall pattern of increasing precipitation that begins in early summer. As the month progresses, the abundant moisture nurtures the local environment, setting the stage for lush landscapes and vibrant ecosystems that characterize this coastal area.
As summer fades into autumn, September in Santa Rosalia, Mexico, experiences a notable surge in humidity, reaching 84%—the highest level of the year. This increase is part of a larger trend, where the coastal city sees a progressive rise in humidity from 46% in March to the peak in September. After the relatively dry spring months, when humidity dips as low as 42% in April, the warmer summer brings a sense of stickiness, culminating in the saturated air of late summer. With humidity levels remaining high throughout the fall, including 75% in October, Santa Rosalia showcases a distinct shift, inviting visitors to experience the vibrant warmth of early autumn amid the lush coastal landscape.
In September, Santa Rosalia, Mexico, experiences a UV Index of 13, categorized as extreme, which means you only have about 10 minutes before risking sunburn. This month continues the trend established in the summer months, with high UV levels reflecting the region's sunny disposition. From January's lower index of 9 to the peak of 14 in the late spring and early summer, the UV Index remains a significant concern as the year progresses. While September maintains that intensity, it is essential to stay informed and protected during these radiant days. For more insights on UV exposure in Santa Rosalia, check out the full details here: Santa Rosalia UV Index.
UV Risk Categories
In September, Santa Rosalia basks in a delightful 271 hours of sunshine, marking a gentle decline from the peak of 346 hours in May. This month is a transition, as the days begin to shorten after the vibrant summer months. Despite the decrease, September still boasts a generous amount of sunlight, allowing residents and visitors to relish warm days and scenic sunsets by the sea. As summer fades, the sun's remaining embrace hints at the beauty of the upcoming autumn, making Santa Rosalia an inviting destination for sunshine lovers well into the season.
In Santa Rosalia, Mexico, the likelihood of sunny weather in September takes a noticeable dip, offering only a 16% chance of clear skies. This trend marks a stark contrast to the sunnier months preceding it, particularly March, which boasts an impressive 80% probability of sunshine. As summer gives way to fall, the sunny days wane significantly, with June and July experiencing even lower probabilities of sun. Overall, September stands out as part of a transition toward a more variable climate, where the promise of bright days becomes less certain, nudging travelers to consider the unpredictable nature of the season while planning their visits.
In September, Santa Rosalia basks in 12 hours of daylight, marking a subtle transition as the days begin to shorten from the summer peak. Following the long, sun-kissed days of May through August, where daylight extends to 13 hours, September signifies a gentle decline, drawing towards the shorter days of fall. As the year progresses, daylight durations fluctuate, starting from 11 hours in January to a summer high of 13 hours, before settling back to 11 hours in October. This rhythmic pattern highlights the region's warm climate and consistent sunshine, making September still a delightful month to enjoy the outdoors despite the gradual decrease in daylight.
As September rolls in, Santa Rosalia experiences a gentle breeze, with average wind speeds dipping slightly to 1.2 m/s (3 mph). This month mirrors the mellow winds of July and August, reflecting a trend of calmer conditions as summer transitions to autumn. Overall, the wind in this charming town has shown a gradual decline from the stronger gusts of early spring, where speeds reached 2.0 m/s (4 mph) in March. As the year progresses into the cooler months, the winds remain consistently light, hovering around the 3 mph mark, inviting leisurely strolls along the picturesque coastline. The subtle shifts serve as a reminder of the serene beauty that makes Santa Rosalia a captivating destination throughout the year.
The weather in Santa Rosalia 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 Rosalia and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). This month also sees considerable rainfall, with a total of 218 mm (8.6 in) spread over 23 days, leading to high humidity levels at 84%. In contrast, January experiences a cooler climate with temperatures dipping to a minimum of 3°C (37°F) and peaking at 31°C (87°F), resulting in an average of 17°C (62°F). January is notably drier, receiving only 12 mm (0.5 in) of precipitation over just 2 days and maintaining a lower humidity of 64%. For more insights into January weather, you can visit Santa Rosalia weather in January.
In comparing September and February weather, September presents a warmer and more humid climate, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 31°C (87°F) and an average of 21°C (71°F). Additionally, it experiences significant rainfall, averaging 218 mm (8.6 in) over 23 days, resulting in a humidity level of 84%. In contrast, February offers a cooler and drier atmosphere, with temperatures ranging from a minimum of 5°C (40°F) to a maximum of 32°C (90°F), and an average of 18°C (65°F). The precipitation is minimal during this month, at just 18 mm (0.7 in) over 2 days, leading to a lower humidity of 57%. For more specific details regarding February weather, you can visit Santa Rosalia weather in February.
September and March display notable differences in weather patterns. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). This month is characterized by high precipitation, totaling 218 mm (8.6 inches) over 23 days, resulting in a high humidity level of 84%. Conversely, March features a cooler temperature range, with a minimum of 6°C (43°F) and a maximum of 35°C (95°F), while maintaining the same average of 21°C (69°F). One of the most striking contrasts is the near absence of precipitation in March, with only 2 mm (0.1 inches) recorded over no rainy days and a humidity level of 46%. For more detailed information, check out Santa Rosalia weather in March.
September and April offer contrasting weather patterns. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). This month is characterized by significant rainfall, with 218 mm (8.6 inches) of precipitation over 23 days, leading to high humidity levels around 84%. In contrast, April boasts a wide temperature range, with lows of 8°C (46°F) and highs reaching up to 36°C (96°F), while maintaining a comfortable average of 22°C (72°F). Remarkably, April experiences virtually no precipitation, with just 1 mm (0.0 inches) and no rainy days, resulting in a much lower humidity level of 42%. For more details about the weather, check Santa Rosalia weather in April.
When comparing the weather in September and May, notable differences emerge. September typically sees a milder average temperature of 21°C (71°F), with maximum highs reaching 31°C (87°F), while May enjoys warmer temperatures, averaging 24°C (75°F) and peaking at a sweltering 37°C (99°F). In terms of precipitation, September is considerably wetter, receiving 218 mm (8.6 in) over 23 days, in stark contrast to May, which has only 14 mm (0.5 in) across just 4 days. Additionally, humidity levels are significantly higher in September at 84%, compared to a more comfortable 51% in May. For more detailed insights, visit Santa Rosalia weather in May.
September and June exhibit contrasting weather patterns. In September, temperatures range from a minimum of 15°C (60°F) to a maximum of 31°C (87°F), with an average of 21°C (71°F). The month is significantly wetter, experiencing 218 mm (8.6 in) of precipitation over 23 days and maintaining a high humidity level of 84%. In contrast, June generally enjoys warmer temperatures, with a minimum of 13°C (56°F) and a maximum of 37°C (100°F), averaging at 24°C (75°F). This month is drier, seeing only 101 mm (4.0 in) of rain over 15 days and a lower humidity of 74%. For more details on the weather specifics in June, visit Santa Rosalia weather in June.
When comparing the weather in September to that of July, we see some notable differences. September typically has a slightly lower average temperature, with a minimum of 15°C (60°F) and a maximum reaching 31°C (87°F), while July enjoys a warmer maximum of 33°C (92°F). Both months experience significant rainfall, but September sees a bit more precipitation at 218 mm (8.6 in) over 23 days compared to July’s 204 mm (8.0 in) spread over 27 days. Humidity levels are also a bit higher in September at 84%, in contrast to July’s 79%. Overall, while both months are warm, September tends to be wetter and more humid. For more specific insights on July weather, you can check Santa Rosalia weather in July.
In comparing the weather patterns of September and August, we observe some notable differences. September tends to be slightly cooler, with an average temperature of 21°C (71°F), compared to August's average of 22°C (72°F). Both months have the same maximum temperature of 31°C (89°F), but September experiences a bit more precipitation at 218 mm (8.6 in), while August records 193 mm (7.6 in) over more days, with 27 days of rain compared to September's 23 days. Additionally, September's higher humidity at 84% slightly adds to the overall mugginess compared to August's 81%. For more detailed insights, you can check out Santa Rosalia weather in August.
September typically brings warmer temperatures, with an average of 21°C (71°F) and highs reaching up to 31°C (87°F). However, it also experiences significant rainfall, totaling 218 mm (8.6 in) over 23 days and humidity levels around 84%. In contrast, October maintains a similar average temperature of 21°C (70°F) but shows slightly cooler minimum temperatures at 11°C (52°F) and maximums peaking at 32°C (89°F). The month is notably drier, with only 78 mm (3.1 in) of precipitation over 11 days and lower humidity at 75%. For more details, check out Santa Rosalia weather in October.
In comparing the weather of September and November, September tends to be much warmer and wetter. The average temperature in September is around 21°C (71°F), peaking at a maximum of 31°C (87°F), while November has a lower average temperature of 19°C (67°F) with a maximum reaching 32°C (90°F). However, September sees significantly more precipitation, totaling 218 mm (8.6 in) over 23 days, in contrast to November's mere 17 mm (0.7 in) over just 3 days, resulting in notably lower humidity levels of 71% in November compared to a humid 84% in September. For more detailed information, you can check Santa Rosalia weather in November.
In September, the weather is significantly warmer and more humid, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 31°C (87°F). The month is marked by high precipitation, receiving about 218 mm (8.6 in) over 23 rainy days, creating a lush atmosphere with 84% humidity. In contrast, December brings a much cooler climate, with temperatures dipping to a minimum of 3°C (38°F) and averaging around 17°C (62°F). The precipitation dramatically decreases to just 15 mm (0.6 in) over 3 days, and humidity falls to 74%, resulting in a drier and more comfortable experience. For more detailed information, you can check Santa Rosalia weather in December.
As September unfolds in Santa Rosalia, the weather stands out with its unique blend of warmth and moisture. With average temperatures hovering around a comfortable 21°C, the month experiences high humidity, giving it a lush atmosphere compared to the drier summer months. Notably, September brings significant rainfall, with precipitation occurring on nearly three-quarters of its days, making it a stark contrast to the drier season. This combination of warmth and frequent showers creates a vibrant environment that rejuvenates the local flora and adds to the charm of the region. For a deeper understanding of what each month brings, explore the full details at Santa Rosalia Climate.