Last updated: April 22, 2025
September in Santa Rosalia, Mexico offers a warm and humid climate, with temperatures peaking at a sizzling 37°C (99°F) and averaging around 29°C (85°F). The evenings provide a refreshing contrast, cooling down to a pleasant 18°C (65°F). During this month, the area experiences approximately 39 mm (1.6 in) of rainfall spread over 3 days, contributing to an average humidity level of 76%. This blend of warmth and moisture creates a vibrant backdrop, perfect for exploring the beauty of Santa Rosalia while enjoying its unique charm.
In September, Santa Rosalia basks in warm tropical temperatures, making it a delightful time to visit. With nighttime lows averaging 18°C (65°F), the early mornings retain a refreshing feel, while daytime highs reach up to 37°C (99°F), offering plenty of sunshine for outdoor adventures. The average temperature hovers around 29°C (85°F), showcasing a comfortable warmth that invites beach goers and explorers alike. As summer transitions to fall, the weather becomes slightly more bearable compared to the sweltering heights of July and August, yet still delivers a vibrant atmosphere perfect for enjoying the scenic beauty and local culture.
In September, Santa Rosalia, Mexico experiences a notable increase in precipitation, with a total of 39 mm (1.6 in) falling over three days. This marked uptick follows the gradual rise in rainfall observed throughout the summer months, culminating in a significantly wetter early fall. August, while still mild with 14 mm, sets the stage for September's more pronounced wetness, showcasing a clear transition into the wetter season of the year. Following September, the precipitation sharply drops off again in October, highlighting the seasonal variability that characterizes this region's climate. Overall, September stands out as a pivotal month, bridging the drier summer and the approaching fall rains, making it a critical period for local ecosystems and water resources.
In September, Santa Rosalia experiences a noticeable uptick in humidity, reaching 76%, making it one of the most humid months of the year. This pattern follows the trend established in the preceding summer months, particularly August, which also boasted high humidity at 73%. As the year transitions from the dry heat of spring and early summer, the increasing moisture levels signal the approach of the wet season, which peaks in late summer and early fall. Interestingly, after September, humidity levels dip slightly in October to 72% but remain relatively high compared to the winter months, where values hover around 71% to 72%. This cyclical rise and fall of humidity in Santa Rosalia not only shapes the region's climate but also influences its natural beauty and daily life.
In September, Santa Rosalia experiences an extreme UV Index of 12, maintaining the same intensity seen throughout the summer months. With a burn time of just 10 minutes, exposure to the sun can quickly lead to skin damage, highlighting the importance of sun safety during this peak period. Following September, the UV levels begin to decrease as October approaches, dropping to a very high index of 9, allowing for slightly longer safe exposure times. Overall, the data reveals a pattern of heightened UV radiation from April through September, making it crucial for residents and visitors alike to stay vigilant and protect their skin. For more detailed information, check out Santa Rosalia UV Index.
UV Risk Categories
September in Santa Rosalia, Mexico, welcomes a delightful 312 hours of sunshine, continuing the trend of plentiful sunlight that peaks during the summer months. As we transition from the sweltering days of July and August, which enjoy 354 and 339 hours respectively, September maintains a healthy dose of brightness, offering a perfect blend of warmth and cooling sea breezes. The sunlight begins to wane slightly as we approach the fall, but the month still showcases more than 300 hours of radiant days, reflecting the region’s consistent charm. This gradual decline in sunshine is characteristic of the shift towards October’s 304 hours, hinting at an upcoming season of cozy evenings and stunning sunsets, while still allowing for plenty of outdoor adventures under the sun.
September in Santa Rosalia, Mexico, offers a pleasant balance of sunshine, with a 72% chance of clear skies. This figure aligns closely with the summer months, reflecting a trend where the sunny probability begins to stabilize after the peak in June (85%) and July (57%). As the region transitions toward autumn, September's weather provides a graceful continuation of warmth and brightness, before the sunniest month, October (89%), sets in. This makes September an excellent time for visitors seeking to enjoy the lingering summer vibes amidst cooler evening breezes.
In Santa Rosalia, Mexico, the daylight duration experiences a gentle ebb and flow throughout the year, creating a unique rhythm that captivates residents and visitors alike. As the year unfolds, January begins with just 10 hours of daylight, gradually increasing to a vibrant 13 hours from May through August, showcasing the peak of summer daylight. However, as September rolls in, the daylight gently wanes to 12 hours, marking a subtle transition towards autumn. This pattern persists into October and November, where daylight dips back to 11 hours and 10 hours, respectively, echoing the natural cycle of shorter days. Each month in Santa Rosalia offers its own charm, as the shifting sunlight illuminates the stunning landscapes and vibrant culture of this coastal town.
As September unfolds in Santa Rosalia, Mexico, the air takes on a subtler breeze, with average wind speeds dipping to 2.6 m/s (6 mph). This marks the continuation of a downward trend observed since the peak winds of March, which reached 3.7 m/s (8 mph). From the lively gusts of earlier months, the summer winds have gradually softened, settling into a gentle rhythm that invites leisurely strolls along the coastal pathways. In contrast, as the season transitions into October, wind speeds are expected to regain some strength, hinting at the cyclical nature of Santa Rosalia's climate. Travelers can still enjoy the pleasant atmosphere, as the comfortable winds create a serene backdrop for exploration and relaxation.
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 weather features significantly warmer temperatures, with a minimum of 18°C (65°F) and an average high reaching 37°C (99°F). In contrast, January sees much cooler conditions, starting with a minimum temperature of 7°C (44°F) and an average high of only 26°C (79°F). Precipitation is also more prevalent in September, with 39 mm (1.6 in) over about three days, while January experiences minimal rainfall of just 10 mm (0.4 in) across one day. Humidity levels are slightly higher in September at 76%, compared to January's 71%. For more detailed insights, check out Santa Rosalia weather in January.
September weather is characterized by warm temperatures ranging from a minimum of 18°C (65°F) to a maximum of 37°C (99°F), with an average of 29°C (85°F). This month receives around 39 mm (1.6 in) of precipitation over three days, accompanied by a high humidity level of 76%. In stark contrast, February experiences much cooler conditions, with temperatures dipping as low as 7°C (45°F) and peaking at 27°C (80°F), averaging 17°C (63°F). Notably, February has minimal rainfall, with just 5 mm (0.2 in) and no rainy days, along with a lower humidity of 66%. For more details on February weather, check out the link: Santa Rosalia weather in February.
In September, the weather is notably warmer, with average temperatures soaring to 29°C (85°F) and maximums reaching up to 37°C (99°F), accompanied by high humidity at 76%. This month also sees some precipitation, with an average of 39 mm (1.6 in) falling over three days. In contrast, March offers a cooler climate, with an average temperature of 19°C (66°F) and maximums of 30°C (86°F). The humidity is lower at 58%, and there's typically no recorded rainfall, with just 8 mm (0.3 in) over the month. For a more detailed look at March weather, you can visit Santa Rosalia weather in March.
In comparing the weather between September and April, it's clear that September is significantly warmer, with average temperatures reaching up to 29°C (85°F) and maximums soaring to 37°C (99°F). This month also experiences higher humidity levels at 76% and some precipitation, registering around 39 mm over three days. In contrast, April offers a milder climate, with average temperatures of 22°C (72°F) and highs of 33°C (92°F). Notably, April boasts completely dry conditions, with no recorded precipitation or humid days, contributing to a comfortable atmosphere at 52% humidity. For more details on April weather, you can check Santa Rosalia weather in April.
In September, temperatures soar with a minimum of 18°C (65°F) and an average of 29°C (85°F), peaking at a high of 37°C (99°F). The month sees some precipitation, averaging 39 mm (1.6 in) over approximately 3 days, while humidity remains high at 76%. In contrast, May offers a more temperate climate, with minimum temperatures of 13°C (56°F) and an average of 24°C (76°F), reaching a maximum of 34°C (93°F). Notably, May experiences no precipitation and significantly lower humidity at 51%. For more details, you can refer to Santa Rosalia weather in May.
In comparing the weather between September and June, both months exhibit similar temperature ranges, with minimums around 18°C (65°F), average temperatures of approximately 29°C (85°F), and maximums peaking at around 37°C (99°F). However, September is characterized by significantly higher humidity levels at 76%, compared to June's more comfortable 51%. Additionally, September experiences more precipitation, with about 39 mm (1.6 in) over three days, whereas June remains exceptionally dry with only 1 mm of rainfall over the entire month, making it an ideal time for outdoor activities. For further details, you can check Santa Rosalia weather in June.
When comparing the weather in September to that of July, several notable differences emerge. September experiences a slightly wider temperature range, with minimums of 18°C (65°F) and maximums reaching up to 37°C (99°F), while July maintains higher minimum temperatures at 26°C (79°F) and maximums of 38°C (100°F). Additionally, September is characterized by increased humidity at 76%, compared to July's lower level of 60%. Precipitation is more prevalent in September, with an average of 39 mm (1.6 in) occurring over three days, contrasting with July's minimal 8 mm (0.3 in) over just two days. For more details about the weather in July, you can visit Santa Rosalia weather in July.
In comparing the weather between the two months, September shows a slight drop in minimum temperatures, averaging 18°C (65°F), compared to August's warmer minimum of 24°C (75°F). While September averages a comfortable 29°C (85°F), August remains slightly hotter with an average temperature of 31°C (88°F). The maximum temperatures also reflect this trend, with September peaking at 37°C (99°F) against August's 38°C (100°F). Notably, September experiences more precipitation at 39 mm (1.6 in) over three days, while August records only 14 mm (0.5 in) across the same number of days. Humidity levels are relatively comparable, with September at 76% and August at 73%. For more information about August's weather specifics, you can check out Santa Rosalia weather in August.
In September, the weather is typically warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 37°C (99°F) and an average of 29°C (85°F). This month also experiences higher humidity at 76%, along with 39 mm (1.6 in) of precipitation over three days. In contrast, October sees cooler temperatures, with a minimum of 16°C (61°F), an average of 26°C (79°F), and a maximum of 36°C (97°F). October boasts significantly lower precipitation at just 6 mm (0.2 in) over one day and slightly reduced humidity at 72%. For a closer look at the weather specifics in October, check out Santa Rosalia weather in October.
September and November exhibit notable differences in weather patterns. September typically boasts warmer temperatures, with a minimum of 18°C (65°F) and an average high reaching up to 37°C (99°F). In contrast, November cools down significantly, with a minimum temperature of 13°C (56°F) and an average high of 32°C (89°F). Precipitation is more frequent in September, averaging 39 mm over three days, compared to just 10 mm of rain on one day in November. Additionally, humidity levels in September are slightly higher at 76%, while November sees a decrease to 72%. For more detailed information, check out Santa Rosalia weather in November.
In September, the weather is warm and humid, with temperatures ranging from a minimum of 18°C (65°F) to a scorching maximum of 37°C (99°F). The month sees an average temperature of 29°C (85°F) and experiences significant humidity at 76%, along with 39 mm (1.6 in) of precipitation over three days. Conversely, December offers much cooler conditions, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 27°C (81°F) and an average of 17°C (63°F). The humidity decreases slightly to 72%, and precipitation is minimal at just 9 mm (0.4 in) over only one day. For more detailed insights, check out Santa Rosalia weather in December.
As September rolls into Santa Rosalia, the weather presents a unique transition from the scorching summer months. With temperatures averaging a pleasant 29°C (85°F), the heat lingers but is significantly tempered compared to the peak summer highs. This month also welcomes a modest amount of rainfall, with around 39 mm spread over just a few days, offering much-needed relief from the dryness and humidity that hovers at 76%. Compared to the more arid summer months, September gives visitors a taste of the changing season, making it an ideal time to enjoy the region's stunning landscapes. For a deeper dive into what to expect throughout the year, check out Santa Rosalia Climate.