Last updated: April 22, 2025
September in Santa Rosalia, Mexico, presents a blend of warm and humid conditions as summer draws to a close. With maximum temperatures reaching 25°C (77°F) and average lows around 10°C (50°F), the weather is comfortably mild overall. However, be prepared for the high humidity at 77%, contributing to a sticky atmosphere. It's also the peak of the rainy season, with 331 mm (13.0 in) of precipitation recorded over 26 days, making sun-soaked moments a delightful yet rare occurrence. Visitors and locals alike will need to embrace the layers and waterproof gear to navigate this vibrant yet wet month in this picturesque coastal town.
September in Santa Rosalia, Mexico, offers a pleasant transition towards autumn, characterized by mild temperatures that create a comfortable atmosphere for visitors and locals alike. With minimums around 10°C (50°F) and averages hovering at 17°C (64°F), the weather remains inviting, though slightly cooler than the sweltering summer months. The maximum temperatures peak at 25°C (77°F), providing just the right warmth for outdoor explorations without the oppressive heat of July and August. As the month progresses, you'll notice a gradual decline in temperature, hinting at the upcoming change of seasons, making September an ideal time to experience the charm of this coastal town.
In September, Santa Rosalia experiences a significant surge in precipitation, accumulating an impressive 331 mm (13.0 in) over the course of the month. This rainfall occasionally transforms the landscape, breaking records as it falls for nearly 26 days. The trend showcases the peak of the rainy season, following a remarkably wet June and August, both of which also recorded substantial rainfall, yet September's totals highlight a particularly intense period of moisture. As the rainy month draws to a close, the community often prepares for the shifting climate, recognizing that September’s downpours signal the transition into drier months ahead. Such patterns underline Santa Rosalia's dynamic weather system, where autumn brings a mix of abundant rain and the promise of clearer skies.
As summer transitions into fall, September in Santa Rosalia, Mexico brings a noticeable uptick in humidity, reaching 77%. This marks a shift from the more moderate levels experienced during the warmer months of April through June, where humidity hovered around the low 50s to mid-60s. The rise in humidity continues a pattern observed throughout late summer, peaking before the cooler months set in. Following September, October sees a slight increase to 78%, signaling the onset of the wetter season. As the year progresses, humidity levels tend to climb steadily, echoing the coastal climate's characteristic characteristics, making September a transitional month that bridges the warmth of summer with the cooler, more humid air that follows.
In September, Santa Rosalia, Mexico, maintains an extreme UV Index of 14, continuing a trend that began earlier in the year. This high index keeps the burn time at a mere 10 minutes, highlighting the need for sun safety precautions. Throughout the summer months, the UV Index reached its peak at 15, while September marks a slight drop, although still within the extreme category. As autumn approaches, the UV levels begin to wane slightly, with October forecasted at 13, but safety remains crucial during this time. For more details on UV levels and their implications for sun exposure, visit Santa Rosalia UV Index.
UV Risk Categories
September in Santa Rosalia, Mexico, continues the trend of abundant sunshine, offering 291 hours of glorious daylight. As summer transitions into fall, this month introduces a slight dip in sunlight compared to the sun-soaked days of July (328 hours) and August (316 hours). However, September still boasts satisfying sunshine, making it a delightful time for visitors and locals alike. The sunlight hours in September help maintain a warm and inviting atmosphere, contributing to Santa Rosalia's charm as a year-round destination. Following this, October and November promise a similar embrace of sun, with 295 and 305 hours respectively, ensuring that the glow of summer lingers a bit longer.
In Santa Rosalia, Mexico, September ushers in a notable dip in sunny weather, with only a 16% chance of sunshine. This contrasts sharply with the earlier months of the year, where February peaks at a remarkable 72%, showcasing the region's potential for bright days. As summer concludes, the chances of sun continue to dwindle, following a downward trend from the higher percentages seen in spring, such as 62% in March. As the rainy season approaches, September aligns more with June and July, which also experience minimal sunshine, emphasizing the shift in Santa Rosalia's climate as autumn sets in. While September may not be the sunniest month, it offers a unique charm, inviting visitors to experience the vibrant culture and landscapes despite the cloudier skies.
In Santa Rosalia, Mexico, the daylight duration presents a rhythmic pattern throughout the year, peaking in the height of summer. From January to April, daylight gradually increases from 11 to 12 hours, marking the transition into longer days. May and June offer the longest daylight stretches of 12 and 13 hours respectively, providing ample sunshine for outdoor activities. However, as summer wanes, July to September return to a consistent 12-hour daylight duration, creating a perfect balance for day trips and leisure. As autumn arrives with October and November, daylight tapers again to 11 hours, signaling the impending approach of winter's shorter days. This cycle not only enhances the coastal charm of Santa Rosalia but also guides residents and visitors in planning their adventures throughout the seasons.
As September unfolds in Santa Rosalia, Mexico, the wind speed experiences a gentle lull, averaging 1.3 m/s (3 mph), marking it as one of the calmer months of the year. Following a summer of slightly brisker breezes, particularly in July with an average of 2.2 m/s (5 mph), this month's tranquility is a noticeable shift. The trend reveals a gradual decline in wind speed as the season transitions, reflecting the serene atmosphere typical of the late summer days. However, just as the winds soften, the promise of a revival emerges in November, when gusts typically pick up again to 2.1 m/s (5 mph), inviting a refreshing change. September, in its subtle stillness, offers a perfect backdrop for embracing the coastal beauty of Santa Rosalia.
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 is characterized by milder temperatures, with a range from a minimum of 10°C (50°F) to a maximum of 25°C (77°F) and an average of 17°C (64°F). The month experiences significant rainfall, with precipitation reaching 331 mm (13.0 in) over 26 days, resulting in a humidity level of 77%. In contrast, January presents cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 26°C (79°F), averaging around 14°C (58°F). The month is much drier, receiving only 31 mm (1.2 in) of precipitation over just 8 days, although the humidity is slightly higher at 84%. For more details on January weather, visit Santa Rosalia weather in January.
In comparing the weather between September and February, we observe a notable difference in temperature and precipitation patterns. September experiences a wider temperature range, with a minimum of 10°C (50°F) and a maximum reaching 25°C (77°F), while February has slightly cooler temperatures, starting at a minimum of 5°C (41°F) and a maximum of 27°C (81°F).
Rainfall is significantly more frequent in September, with 331 mm (13.0 in) of precipitation over 26 days, compared to a mere 15 mm (0.6 in) in February, which only sees rain on 4 days. The humidity levels are relatively high for both months, with September at 77% and February slightly lower at 73%. For more detailed information, you can explore Santa Rosalia weather in February.
When comparing the weather in September and March, distinct differences emerge. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), maintaining an average of 17°C (64°F). This month is notably wet, with 331 mm (13.0 in) of precipitation over 26 days, contributing to a high humidity level of 77%. In contrast, March features milder conditions, with minimum temperatures around 6°C (43°F) and maximums reaching 29°C (84°F), but the average remains steady at 17°C (62°F). The rainfall is significantly lower at just 17 mm (0.7 in) over 5 days, leading to a more comfortable humidity level of 59%. For more detailed insights, check out Santa Rosalia weather in March.
September and April present contrasting weather patterns that significantly influence outdoor activities. In September, temperatures range from a cooler minimum of 10°C (50°F) to a warm maximum of 25°C (77°F), accompanied by high humidity levels of 77% and considerable precipitation of 331 mm (13.0 in) over 26 days. In contrast, April boasts milder temperatures, with a minimum of 6°C (44°F) and a maximum reaching 29°C (84°F), while experiencing much lower precipitation of only 44 mm (1.8 in) across just 10 days and a more comfortable humidity level of 52%. For those interested in the specifics of the April climate, further details are available at Santa Rosalia weather in April.
When comparing the weather in September and May, notable differences emerge. September tends to be cooler, with average temperatures hovering around 17°C (64°F), while May is warmer, reaching an average of 18°C (65°F) and peaking at 29°C (84°F). Rainfall is significantly higher in September, with a substantial 331 mm (13.0 in) spread over 26 days, compared to May's more manageable 188 mm (7.4 in) over 22 days. Additionally, the humidity in September is much higher at 77%, while May enjoys a drier climate with 53% humidity, making it feel more comfortable overall. For a more detailed look at May weather specifically, check out Santa Rosalia weather in May.
In September, temperatures are slightly cooler, with a minimum of 10°C (50°F) and a maximum of 25°C (77°F), compared to June, where temperatures range from 11°C (51°F) to a maximum of 26°C (80°F). Both months experience significant rainfall, with September accumulating 331 mm (13.0 in) over 26 days, while June sees slightly higher precipitation at 341 mm (13.4 in) across 25 days. A notable difference is in humidity, with September exhibiting a higher humidity level of 77%, compared to June’s 55%. For a closer look at June's weather, you can check Santa Rosalia weather in June.
In comparing the weather of September and July, both months share similar minimum and average temperatures, with July being slightly warmer, reaching a maximum of 26°C (79°F) compared to 25°C (77°F) in September. However, September experiences significantly higher precipitation, totaling 331 mm (13.0 in) over 26 days, while July sees only 128 mm (5.0 in) across 17 days, leading to a drier climate in July. Additionally, humidity levels are notably higher in September at 77%, compared to 61% in July, contributing to a more sultry atmosphere as summer winds down. For more detailed insights, you can explore Santa Rosalia weather in July.
In comparing the weather between September and August, we see that both months have similar temperature ranges, with minimums at 10°C (50°F) and averages around 17°C (64°F). However, August is slightly warmer on average, with a maximum temperature of 26°C (79°F) compared to September's 25°C (77°F). Notably, September experiences significantly higher precipitation, with 331 mm (13.0 in) over 26 days, compared to August's 214 mm (8.4 in) over 21 days. Additionally, September has a higher humidity level at 77%, while August sits at 71%. For more specifics on August’s weather, check out Santa Rosalia weather in August.
September and October display some similarities in terms of temperature, with average temperatures remaining relatively stable at around 17°C (64°F). While September experiences slightly warmer highs of 25°C (77°F), October's maximum temperature edges up to 26°C (78°F). However, October tends to be drier with 232 mm (9.1 in) of precipitation over 22 days, compared to September's 331 mm (13.0 in) over 26 days. Both months maintain high humidity levels, but October's slightly elevated humidity of 78% may contribute to a muggier feel as the month progresses. For a detailed look at weather conditions specific to October, you can visit Santa Rosalia weather in October.
In comparing the weather between September and November, we see notable differences in temperature and precipitation patterns. September experiences a warmer climate, with average temperatures peaking at 25°C (77°F), while November has a slightly cooler average of 16°C (61°F). Despite both months sharing the same maximum temperature of 25°C, November's minimum temperature dips to 6°C (42°F), compared to September's 10°C (50°F).
Precipitation levels also contrast significantly; September is quite wet, receiving a substantial 331 mm (13.0 in) over 26 days, whereas November sees much less rain, with only 65 mm (2.6 in) over 13 days. Humidity is also slightly higher in November at 82% compared to 77% in September. For more details on November weather specifics, you can check Santa Rosalia weather in November.
In September, the weather is generally milder, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 25°C (77°F) and an average of 17°C (64°F). However, this month is characterized by high precipitation, totaling 331 mm (13.0 in) over 26 days, alongside a humidity level of 77%. In contrast, December experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 24°C (76°F), while the average temperature settles at 15°C (59°F). Notably, December sees significantly less precipitation, with only 27 mm (1.1 in) falling over just 6 days, albeit with higher humidity levels of 86%. For more information about December weather, you can check out Santa Rosalia weather in December.
As September unfolds in Santa Rosalia, it brings a distinct shift in weather characterized by higher humidity and a notable increase in precipitation compared to other months. While temperatures remain relatively mild, the average drops, marking a transition towards the cooler, wetter season. Frequent rain showers contribute to a lush landscape, but they also mean that visitors should be prepared for an increased chance of wet days. This month’s unique blend of warmth and moisture sets the stage for a vibrant atmosphere, making Santa Rosalia an intriguing destination for those ready to embrace the quirks of its September climate. For more detailed information, check out Santa Rosalia Climate.