Last updated: April 22, 2025
In Santa Rosalia, Mexico, September showcases a warm climate with maximum temperatures reaching 38°C (100°F) and an average of 28°C (83°F). Nights are pleasantly cooler, with minimum temperatures around 23°C (73°F). This month also experiences significant rainfall, contributing to a total of 214 mm (8.4 in) over 24 days, resulting in a humid atmosphere with an average humidity level of 87%. Visitors should prepare for both heat and occasional rain, making it essential to stay hydrated and carry light rain gear.
In September, Santa Rosalia experiences warm and inviting temperatures that are ideal for enjoying the coastal scenery. With minimums lingering comfortably at 23°C (73°F) and averages around 28°C (83°F), the city maintains a relaxed atmosphere as summer gently transitions into fall. The maximum temperature can still reach 38°C (100°F), reflecting the lingering heat of the season. This month showcases a slight dip in average temperatures compared to the peak summer months, yet retains the warmth that attracts visitors. Overall, September provides a perfect balance for exploring outdoor activities or lounging by the beach while basking in the sun's embrace.
In September, Santa Rosalia experiences a significant uptick in rainfall, with 214 mm (8.4 in) accumulating over 24 days. This increase marks one of the wettest months of the year, following the already substantial downpours of August. The transition into autumn is characterized by this heightened precipitation, as the region prepares for the cooler months ahead. Notably, September's rainfall is part of a broader trend observed from June to October, where the city consistently sees heavy rains, culminating in October's peak of 257 mm (10.1 in). This seasonal shift underscores the importance of September as a pivotal point in the local climate, transitioning from summer aridity to a wetter, more dynamic weather pattern.
As summer transitions into autumn, September in Santa Rosalia, Mexico, showcases a consistent humidity level of 87%, mirroring that of August. This steady humidity, characteristic of the region, highlights a distinct trend as the year progresses: from January's 83%, humidity steadily declines to a low of 59% in April before rising again with the warmth of summer. By mid-year, levels surge back up, peaking at 88% come October, and maintaining that high heading into the winter months. This cyclical pattern underscores the region's maritime climate, where humidity levels play a significant role in shaping the overall weather experience.
As September rolls into Santa Rosalia, Mexico, residents and visitors continue to face extreme sun exposure, with a UV Index of 12. This signals a consistent trend seen over the summer months, where the region experiences a high ultraviolet intensity, necessitating vigilant sun protection measures. With a burn time of just 10 minutes, it's crucial to seek shade and wear protective clothing during peak hours. Interestingly, this month's UV Index mirrors the levels recorded in August, indicating that while temperatures may begin to cool, the sun's potency remains strong. For more details on UV exposure throughout the year, check out Santa Rosalia UV Index.
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As September rolls in, Santa Rosalia boasts an impressive 297 hours of sunshine, offering a delightful blend of warmth and clarity before the cooler months set in. This month stands as a vibrant bridge between the peak summer sunshine of July and August, which recorded 328 and 324 hours respectively, and the gradual decline that accompanies the autumn season. Despite a slight dip from the summer highs, September maintains a considerable amount of sun, continuing the trend of bright days while inviting the charm of the coming fall. Notably, this month reflects the overall trend of the region, where sunshine hours begin the slow descent from the summer zenith, yet still gift residents and visitors alike with ample opportunities to soak in the golden rays.
In Santa Rosalia, Mexico, the likelihood of sunny weather in September drops to a mild 20%, marking a significant dip from the sunnier months earlier in the year. Following a pattern of fluctuating sunshine, June experiences the least sunlight at 16%, while both February and March shine brightly with probabilities as high as 66% and 68%, respectively. As summer transitions into fall, September's weather hints at the encroaching cloudiness and cooler temperatures, setting the stage for a cozy transition into autumn. This trend illustrates the shift in weather patterns, where the promise of sunshine becomes less predictable, reminding visitors to embrace a more varied climate as they plan their September getaways.
In September, Santa Rosalia enjoys approximately 12 hours of daylight, maintaining the trend from the summer months of June, July, and August, which also featured the same amount of sunlight. As the year transitions into autumn, the daylight duration gradually decreases, starting with October's drop to 11 hours. Throughout the year, Santa Rosalia experiences a gentle ebb and flow of daylight, peaking in the summer at 13 hours before settling back into a comfortable rhythm of 11 to 12 hours in the cooler months. This consistent variation not only marks the changing seasons but also offers a vibrant backdrop for the region's warm, sunny climate.
As September arrives in Santa Rosalia, Mexico, the gentle winds begin to whisper through the coastal town, averaging a calm 1.8 m/s (4 mph). This month marks a subtle dip in wind speed, a trend that has been observed since the breezy heights of July and March, which both reached more vigorous 2.9 m/s (7 mph). Following a summer filled with moderate breezes, September’s stillness offers a serene backdrop as the town transitions into autumn. The consistently lower winds paired with warm temperatures create an inviting atmosphere, perfect for leisurely strolls along the waterfront, as residents and visitors alike enjoy the tranquil charm of this picturesque locale.
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 are notably warmer, with minimums around 23°C (73°F) and averages climbing to 28°C (83°F), peaking at a scorching 38°C (100°F). This month also experiences significant rainfall, totaling 214 mm (8.4 in) over 24 days, accompanied by high humidity at 87%. In contrast, January offers much cooler conditions, with minimum temperatures around 13°C (56°F) and an average of 23°C (74°F), reaching a maximum of 34°C (94°F). The precipitation in January is considerably less, at 80 mm (3.2 in) over just 10 days, and humidity is slightly lower at 83%. For an in-depth look into January's weather specifics, visit Santa Rosalia weather in January.
September and February offer contrasting weather experiences. September is characterized by higher temperatures, with minimums around 23°C (73°F) and maximums reaching up to 38°C (100°F), combined with high humidity at 87%. This month also sees significant rainfall, with an average precipitation of 214 mm (8.4 in) spread across about 24 days, contributing to a muggy atmosphere. In contrast, February enjoys milder temperatures, featuring a minimum of 13°C (56°F) and an average of 25°C (77°F), while maximums can reach 36°C (96°F). This month experiences much less precipitation, averaging only 30 mm (1.2 in) over about 6 days and a lower humidity of 76%. For a more detailed look at February's weather, you can visit Santa Rosalia weather in February.
In September, the weather is characterized by high temperatures and significant humidity, with minimums reaching 23°C (73°F) and averages around 28°C (83°F), often peaking at a sweltering 38°C (100°F). This month also sees substantial rainfall, with 214 mm (8.4 in) spread over 24 days, contributing to a high humidity level of 87%. In contrast, March offers a milder climate, where temperatures range from a minimum of 15°C (60°F) to an average of 26°C (80°F), also maxing out at 38°C (101°F). The precipitation levels drop dramatically to just 34 mm (1.4 in) over 6 days, and humidity decreases to a more comfortable 66%. For those interested in more details on the weather during this time, you can check out Santa Rosalia weather in March.
September and April present contrasting weather patterns. In September, the temperatures range from a minimum of 23°C (73°F) to a maximum of 38°C (100°F), with an average of 28°C (83°F). This month experiences significant rainfall, accumulating 214 mm (8.4 in) across 24 days, and high humidity at 87%. In contrast, April sees slightly cooler temperatures, starting at a minimum of 18°C (64°F) and climbing to a maximum of 41°C (106°F), with an average of 29°C (84°F). Precipitation is much lower in April, with only 47 mm (1.9 in) falling over just 7 days and humidity levels dropping to 59%. For more detailed information about April weather, check out Santa Rosalia weather in April.
When comparing the weather in September and May, notable differences emerge. September typically features higher humidity levels at 87% and more frequent rainfall, with about 214 mm of precipitation over 24 days. In contrast, May enjoys slightly lower humidity at 64% and significantly less rainfall, totaling just 76 mm across 11 days. Temperatures in May can reach a maximum of 41°C (106°F), making it notably hotter at its peak compared to September's maximum of 38°C (100°F). For more details on May's weather, visit Santa Rosalia weather in May.
In comparing the weather between September and June, both months exhibit similar temperature ranges, with minimums around 23°C (73-74°F) and maximums reaching up to 38°C (100°F). However, September tends to be slightly warmer on average at 28°C (83°F), compared to June's average of 29°C (84°F). Notably, September experiences higher precipitation, with 214 mm (8.4 in) over 24 days, contrasting with June's 253 mm (10.0 in) spread across 21 days. Additionally, September has a significantly higher humidity level at 87%, while June's humidity sits at a more comfortable 69%. For a detailed look at June weather specifically, you can check Santa Rosalia weather in June.
When comparing the weather in September and July, both months experience warm temperatures, though September tends to be slightly cooler on average. September has a minimum temperature of 23°C (73°F) and an average of 28°C (83°F), while July is just a bit warmer, with an average of 29°C (85°F) and a maximum reaching up to 38°C (101°F). Notably, September sees significantly more precipitation, totaling 214 mm (8.4 in) over 24 days compared to July's 85 mm (3.3 in) over just 15 days. Additionally, September's humidity is higher at 87%, compared to 82% in July. For more details on July weather specifically, you can check Santa Rosalia weather in July.
In September, the weather remains quite warm, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 38°C (100°F), similar to August's temperatures. However, September experiences more rainfall, with 214 mm (8.4 in) over 24 days, compared to August's 140 mm (5.5 in) over 20 days. Humidity levels stay constant at 87% for both months, making the air feel equally muggy. For a detailed look at August's weather, you can refer to Santa Rosalia weather in August.
September and October present notable differences in weather patterns. In September, temperatures range from a minimum of 23°C (73°F) to a maximum of 38°C (100°F), with an average of 28°C (83°F). This month experiences heavy rainfall, totaling 214 mm (8.4 in) over 24 days, along with a high humidity level of 87%.
In contrast, October witnesses slightly cooler temperatures, with a minimum of 20°C (68°F), an average of 27°C (81°F), and a maximum of 36°C (97°F). Rainfall increases to 257 mm (10.1 in) but occurs over just 22 days, keeping the humidity marginally higher at 88%.
For more detailed information on weather during this month, you can visit Santa Rosalia weather in October.
In September, temperatures soar with a minimum of 23°C (73°F) and an average of 28°C (83°F), reaching highs of up to 38°C (100°F). The month is characterized by high humidity at 87% and significant rainfall, totaling 214 mm (8.4 in) over 24 days. Conversely, November brings a noticeable drop in temperature, with a minimum of 16°C (62°F) and an average of 25°C (77°F), while highs reach a maximum of 35°C (96°F). Rainfall decreases to 169 mm (6.6 in), occurring over 18 days, and humidity remains similar at 88%. For more detailed weather information, check Santa Rosalia weather in November.
September and December present contrasting weather patterns. In September, temperatures can soar with a minimum of 23°C (73°F) and an average reaching up to 28°C (83°F), peaking at a sweltering 38°C (100°F). The month is marked by significant rainfall, experiencing 214 mm (8.4 in) over 24 days, contributing to the high humidity of 87%. In contrast, December sees more moderate temperatures, with a minimum of 13°C (56°F) and an average of 24°C (75°F), and a maximum of 34°C (93°F). Rainfall decreases significantly to 71 mm (2.8 in) spread over only 11 days, while humidity remains slightly higher at 88%. For more specific information about December weather, you can refer to Santa Rosalia weather in December.
As September arrives in Santa Rosalia, it brings a noticeable shift in weather compared to the drier summer months. While temperatures remain relatively warm, the humidity soars, creating a muggier atmosphere that can feel quite intense. This month also sees a significant uptick in rainfall, with nearly a third of September days experiencing precipitation, making it one of the wettest months of the year. This dampness coupled with the heat can lead to a lush and vibrant landscape, but visitors should be prepared for sporadic downpours. If you're curious to learn more about the overall climate trends in this charming destination, visit Santa Rosalia Climate.