Last updated: April 22, 2025
Experience the vibrant September weather in El Castillo, Mexico, where temperatures typically range from a comfortable 25°C (77°F) to a warm maximum of 33°C (92°F), averaging around 29°C (84°F). This picturesque month boasts a humidity level of 78%, creating a tropical ambiance that enhances the lush landscapes. However, be prepared for occasional rainfall, as September witnesses about 133 mm (5.2 in) of precipitation spread over 19 days. Whether you’re exploring the local culture or enjoying nature's beauty, the weather offers a unique backdrop for your adventures.
In September, El Castillo, Mexico, experiences warm and tropical temperatures, with a minimum of 25°C (77°F) and an average of 29°C (84°F). This month marks the peak of the hot season, as daytime highs reach 33°C (92°F), making it one of the warmest times of the year. The trend shows a gradual increase in temperatures from the cooler months of January through August, culminating in September's heat. The climate is notably humid, a characteristic of late summer, providing a vibrant atmosphere for outdoor explorations and cultural festivities. As temperatures begin to decline slightly into October, visitors can enjoy the lingering warmth while witnessing the transition into the fall season.
In September, El Castillo, Mexico experiences one of its wettest months, with precipitation reaching 133 mm (5.2 in) over 19 days of rainfall. This marks a slight increase from August's 129 mm (5.1 in), highlighting a significant uptick in the region's rainy season as summer transitions into fall. The consistent precipitation not only contributes to the lush landscape but also underscores the monthly trend of increased rainfall that begins in July and peaks in September. As the dry months of the year approach, the remarkable downpours of this period serve as a critical hydration source for the local ecosystem, before the October rain totals drop to 40 mm (1.6 in), marking a noticeable decline.
In September, El Castillo, Mexico, experiences high humidity levels, maintaining a consistent 78% which mirrors the previous month. This time of year, the humidity begins to stabilize as summer fades, reflecting a trend where the wettest months typically feature elevated moisture levels. From July through September, humidity rises significantly, with readings peaking in these later summer months. In contrast, the air tends to be drier during the early months of the year, showcasing a gradual decrease from 70% in January to a low of 58% in April. As the seasons transition, residents and visitors alike can expect a lush, humid atmosphere that peaks at summer's end, setting a vibrant backdrop for the beauty of El Castillo.
In September, El Castillo, Mexico experiences a notably high UV Index of 12, placing it in the extreme exposure category with a burn time of just 10 minutes. This pattern of high UV activity continues from the preceding summer months, where the index has consistently reached the same extreme level. The trend indicates a significant need for sun protection as the sun's intensity remains high, prompting visitors and locals alike to take necessary precautions. As autumn approaches, watch for a gradual decline in UV levels in October and beyond. To learn more about the UV Index in El Castillo, check out El Castillo UV Index.
UV Risk Categories
As September rolls into El Castillo, Mexico, the sun continues to shine brightly, offering 280 hours of warm daylight—a gentle transition from the peak summer months. Although this marks a decline from the sun-soaked 360 hours in May, it still holds its own, reflecting a resilient summer spirit. The month embraces a delightful balance, nestled between the sultry days of summer and the cooler embrace of fall, sustaining an inviting atmosphere for both visitors and locals alike. With September's hours slightly lower than in the preceding months, it's a reminder of nature's rhythms and the approach of autumn, yet El Castillo remains a radiant getaway, basking in its rich tapestry of sunshine.
In El Castillo, Mexico, September heralds the transition from summer, offering a 47% chance of sunny weather. This marks a notable decrease from the previous months of May and June, when the sun was in full force, boasting chances of 76% and 62% respectively. As summer fades into autumn, the likelihood of sunshine diminishes; August, with only a 25% chance, sets the stage for September’s moderate brightness. Historically, September's sun-soaked days are outpaced by the wetter months ahead, making it a time when clouds may loom more than rays of sunshine. The overall trend indicates that while sun seekers might not experience the vibrancy of summer, they can still hope for glimpses of warmth as the seasons shift.
As summer fades into autumn, September in El Castillo, Mexico, offers a delightful balance of 12 hours of daylight. This month marks a subtle transition, mirroring the steady decline in daylight that begins after the peak of the summer months. With the longest days occurring in May through July, September maintains this generous daylight, allowing for ample time to explore the rich culture and stunning landscapes of the region. Following September, daylight will gradually decrease, reminding us that the cozy embrace of autumn is on the horizon. Overall, the progression of daylight from January to September highlights a reassuring rhythm, where longer days invite vibrant life and activity before welcoming the gentle retreat of autumn's shorter days.
As September arrives in El Castillo, Mexico, the gentle whispers of the wind signal a subtle shift in the seasonal breeze. With an average wind speed of 2.3 m/s (5 mph), September emerges as one of the calmest months, following a summer characterized by slightly brisker winds. This decline from August's 2.5 m/s (6 mph) and even earlier months illustrates a clear trend: as autumn approaches, winds become less forceful, creating a serene atmosphere perfect for leisurely outdoor activities. Interestingly, September's tranquility stands in contrast to the more invigorating gusts experienced earlier in the year, particularly in March, when winds reach up to 3.7 m/s (8 mph). With October and November offering a slight uptick in wind speed, the seasonal and atmospheric dynamics of El Castillo continue to weave a tapestry of weather patterns that encapsulate the essence of this charming locale.
The weather in El Castillo 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 El Castillo and find detailed weather information for every month.
In September, the weather is characterized by warm temperatures, with minimums around 25°C (77°F) and averages reaching 29°C (84°F), peaking at a maximum of 33°C (92°F). This month also experiences significant rainfall, with 133 mm (5.2 in) of precipitation spread over 19 days, contributing to a high humidity level of 78%. In contrast, January presents a much cooler climate, featuring minimum temperatures of 12°C (53°F) and an average of 19°C (67°F), with maximums only reaching 27°C (81°F). Notably, January sees negligible rainfall of just 4 mm (0.2 in) on 0 days, and humidity decreases slightly to 70%. For a detailed outlook on January weather, please visit El Castillo weather in January.
September and February present a striking contrast in weather patterns. In September, temperatures soar with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at 33°C (92°F). The month is also characterized by high humidity at 78% and significant precipitation, with 133 mm (5.2 in) of rain spread over 19 days, making it a notably wet month. In contrast, February experiences much cooler temperatures, with a minimum of 12°C (54°F), an average of 19°C (67°F), and a maximum of 27°C (81°F). Precipitation drops sharply to just 18 mm (0.7 in) over only 1 day, and humidity decreases to 67%. For more detailed information, you can check El Castillo weather in February.
In September, the weather is notably warmer and more humid, with average temperatures reaching 29°C (84°F) and humidity levels at 78%. This month experiences significant precipitation, with around 133 mm (5.2 in) of rain spread over 19 days, creating a lush yet damp environment. In contrast, March boasts much cooler temperatures, with an average of 20°C (68°F), and significantly lower humidity at 62%. Precipitation is virtually nonexistent, with March receiving just 1 mm (0.0 in) of rain over the entire month. For those looking for detailed weather insights, you can check El Castillo weather in March.
When comparing the weather in September and April, it's evident that September is significantly warmer and more humid. In September, temperatures range from a minimum of 25°C (77°F) to a high of 33°C (92°F), with an average of 29°C (84°F). This month also experiences considerable rainfall, with 133 mm (5.2 in) of precipitation over approximately 19 days, contributing to a high humidity level of 78%. In contrast, April enjoys milder temperatures ranging from a low of 14°C (57°F) to a maximum of 29°C (84°F) and has an average temperature of 22°C (72°F). Notably, April is dry, with no recorded precipitation and a lower humidity of 58%. For more detailed insights on April weather, you can visit El Castillo weather in April.
In September, the weather is notably warmer and more humid compared to May. With average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F), September tends to be hotter, with an average of 29°C (84°F). The month is also characterized by significant precipitation, receiving 133 mm (5.2 in) over 19 days. In contrast, May enjoys milder temperatures, with a minimum of 18°C (64°F) and a maximum of 31°C (88°F), averaging 25°C (77°F), and it boasts completely dry conditions with no recorded precipitation. Additionally, May's humidity level is lower at 59%, making it a more comfortable month overall. For more detailed information, you can check El Castillo weather in May.
In comparing September and June weather, September tends to be warmer and more humid. With minimum temperatures around 25°C (77°F) and average highs reaching 33°C (92°F), it offers a hotter experience than June, which has a lower minimum of 21°C (69°F) and a similar peak of 33°C (91°F). September also sees significantly more rainfall, with 133 mm (5.2 in) spread over 19 days, in stark contrast to June's minimal 18 mm (0.7 in) occurring on just one day. Additionally, the humidity level in September is notably higher at 78%, compared to June's 64%. For more details about June weather, you can visit this link: El Castillo weather in June.
In comparing the weather of September and July, both months experience similar minimum temperatures of around 25°C (77°F) and average temperatures hovering close to 29°C (84°F in September and 85°F in July). However, July is slightly warmer at its maximum, reaching up to 34°C (93°F), while September peaks at 33°C (92°F). A significant difference between the two months is in the precipitation levels; September sees much more rainfall with 133 mm (5.2 in) over 19 days, compared to July's 44 mm (1.7 in) over just 6 days. Additionally, September has a higher humidity at 78%, compared to July's 74%. For more detailed insights, you can check El Castillo weather in July.
In comparing the weather patterns of September and August, both months showcase warm temperatures but with slight variations. September features a minimum temperature of 25°C (77°F) and an average of 29°C (84°F), while August is slightly warmer, with average temperatures peaking at 30°C (86°F) and maximums reaching 35°C (95°F). Precipitation levels in September are comparable, with 133 mm (5.2 in) falling over 19 days, just slightly higher than August's 129 mm (5.1 in) over 16 days. Notably, humidity remains constant in both months, sitting at 78%. For more detailed insights on August weather, you can check out El Castillo weather in August.
September typically offers warmer and more humid weather compared to October, with average temperatures reaching 29°C (84°F) and maximums around 33°C (92°F). Additionally, September experiences significant rainfall, with a total precipitation of 133 mm (5.2 in) over 19 days, leading to a humidity level of 78%. In contrast, October sees a slight decrease in minimum temperatures to 20°C (69°F) and a slightly lower average of 28°C (83°F), while maximum temperatures can peak at 34°C (94°F). Rainfall drops considerably, with just 40 mm (1.6 in) over 4 days and a humidity level of 75%. For more detailed information, you can check El Castillo weather in October.
In comparing the weather between September and November, September tends to be much warmer and wetter. The average temperature in September reaches around 29°C (84°F), with a maximum of 33°C (92°F) and a relatively high humidity of 78%. This month also sees significant rainfall, totaling 133 mm (5.2 in) over 19 days. In contrast, November experiences much cooler temperatures, with an average of 25°C (77°F) and a minimum of 17°C (63°F). Precipitation drops dramatically to just 31 mm (1.2 in) over only one day, and humidity decreases slightly to 74%. For more details on November weather, you can visit El Castillo weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at 33°C (92°F). This month sees significant rainfall, with 133 mm (5.2 in) over 19 days, contributing to a humidity level of 78%. In contrast, December experiences much cooler temperatures, where the minimum drops to 13°C (55°F) and the average is 21°C (70°F), with a maximum reaching 30°C (87°F). Precipitation is notably low in December, with only 10 mm (0.4 in) occurring over just 1 day, and humidity decreases to 72%. For more detailed information about December weather, you can check El Castillo weather in December.
As September unfolds in El Castillo, the weather reveals a distinctive charm marked by higher humidity and frequent rainfall. The warm temperatures, generally warmer than the preceding months, create a vibrant atmosphere, yet the average highs are tempered by rejuvenating showers that grace the landscape. With precipitation occurring on nearly two-thirds of the days, this month contrasts sharply with the drier, cooler months that precede it, marking a transition towards the lushness of fall. For a deeper dive into how this month fits into the broader climate picture, explore El Castillo Climate.