Last updated: April 22, 2025
Experience the warmth of El Castillo, Mexico this September, where temperatures can soar to a maximum of 38°C (101°F), while averaging a comfortable 26°C (80°F). As the sun shines brightly, be prepared for the occasional sprinkle, with about 46 mm (1.8 in) of rain expected over seven days. Humidity levels are notably high at 82%, adding a tropical touch to the vibrant atmosphere. Whether you’re exploring the stunning landscapes or indulging in local culture, September offers a unique blend of heat and refreshing showers that characterize this enchanting destination.
In September, El Castillo, Mexico experiences a transition towards cooler temperatures as summer wanes. The minimum temperature rises slightly to 17°C (63°F), providing a pleasant start to the month, while the average temperature settles at a comfortable 26°C (80°F). The maximum temperature can still reach a scorching 38°C (101°F), a reminder of the lingering summer heat. Compared to the preceding months, September offers a subtle decline in the relentless peak temperatures typical of the summer months, making it an ideal time for those seeking a balance between warmth and mildness. As the season shifts, the days remain vibrant, beckoning visitors to soak in the lush scenery of this enchanting region.
September marks a notable shift in precipitation for El Castillo, Mexico, as the region experiences its peak rainfall of 46 mm (1.8 in) over 7 days. This increase is significant compared to the drier months preceding it, where rainfall ranged from just 2 mm to 30 mm from April to August. The dramatic rise in both the amount and frequency of rain in September signals the transition into the wet season, with the lush environment benefiting from this hydration boost. Following September, October also retains a healthy level of precipitation at 34 mm (1.3 in), but with fewer rainy days, suggesting a gradual tapering off of this rainfall trend as the year progresses toward its drier months.
September in El Castillo, Mexico, ushers in a notable spike in humidity, reaching 82%, the highest since the wet season commenced. This month marks a significant departure from the drier conditions of early spring, where humidity dipped to an average of just 48% in April. As summer approached, humidity levels climbed steadily, peaking in July at 73% before tapering slightly in August. However, as the rains return, September's humidity levels continue to build, preparing the landscape for the lush greenery of autumn. With the following months maintaining high humidity—83% in October and 82% in November—September serves as a vital transition point, highlighting El Castillo's dramatic shift from dry to moist, vibrantly alive surroundings.
As September rolls into El Castillo, Mexico, the UV Index remains a striking 13, categorizing it as extreme and demanding caution for sun exposure. This consistent high level mirrors the previous summer months, where the UV Index also peaked at 13. Such persistent readings highlight the region's potent sun impact during this time, with a burn time of just 10 minutes, urging residents and visitors to take necessary precautions. This trend continues from the intense levels seen in April through August. As the year transitions into fall, one can expect only a slight decrease to 11 in October, but for now, it’s vital to stay protected under the sun. For more detailed information, check out the El Castillo UV Index.
UV Risk Categories
As summer gracefully transitions to fall, September in El Castillo, Mexico, continues to bask in an impressive 294 hours of sunshine. This delightful month, though slightly lower than the sun-drenched heights of summer, still captures the essence of a vibrant Mexican getaway, providing ample sunlight for outdoor adventures and cultural explorations. Following the peak of 357 hours in July, September's sunshine hints at the approaching cooler months, yet remains abundant compared to the winter's averages. The gradual decline in daylight hours signals a shift in seasons, but with its warm and inviting days, September invites visitors to savor what remains of the summer glow before the sun softens into October's 285 hours. Embrace this transitional period, where the lasting warmth still lingers in the air.
In El Castillo, Mexico, September features a 56% chance of sunny weather, a notable decline from the vibrant days of May, which boasts a 76% likelihood. The summer months see an overall dip in sunshine, with July and August dropping to 54% and 52% respectively. However, September marks a slight rebound compared to these peak summer months, offering a better chance for sun. As autumn approaches, the weather begins to stabilize, evidenced by the increase to 68% in October. Thus, while September may not deliver the sun-soaked skies of earlier months, it still presents a fair opportunity for sunny days before the year transitions into the crisp feel of fall.
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.
In September, the wind in El Castillo, Mexico begins to shift subtly, averaging 2.5 m/s (6 mph), a slight uptick from the preceding months of July and August when the wind settled at 2.4 m/s (5 mph). This gentle breeze hints at the transition towards the drier autumn months, following a season of steady winds that gradually increased from January through to June. Notably, the peak wind speed of 3.1 m/s (7 mph) in June showcases the summer's energetic gusts, while the subsequent months witness a gradual decline, culminating in the quieter December winds. Overall, September represents a balanced midpoint, capturing the essence of a changing season as the winds dance lightly through the region, preparing for the upcoming calm of the fall.
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 notably warmer, with average temperatures reaching 26°C (80°F) and highs soaring up to 38°C (101°F). The month experiences more humidity at 82% and an average of 46 mm (1.8 in) of precipitation over seven days. In contrast, January brings cooler conditions, with temperatures ranging from a chilly 0°C (32°F) at night to a mild average of 15°C (59°F), peaking at 31°C (87°F). With significantly less precipitation at just 5 mm (0.2 in) over only one day and lower humidity at 70%, January offers a drier and more comfortable climate. For a detailed look at January weather in this region, check out El Castillo weather in January.
September and February present two contrasting weather patterns. In September, temperatures range from a mild 17°C (63°F) to a scorching 38°C (101°F), with an average of 26°C (80°F). This month also experiences significant humidity at 82% and 46 mm of precipitation over about seven days. In contrast, February is much cooler, with temperatures ranging from a chilly 0°C (33°F) at night to a pleasant 35°C (96°F) during the day, averaging 19°C (66°F). Remarkably, February sees very little precipitation, with only 5 mm recorded over no rainy days and lower humidity at 62%. For those interested in more details, visit El Castillo weather in February.
In September, the weather is generally warmer and more humid, with average temperatures reaching around 26°C (80°F) and highs soaring up to 38°C (101°F). The month sees considerable rainfall, with 46 mm (1.8 in) of precipitation over about 7 days, leading to a humidity level of 82%. In contrast, March presents a cooler and drier climate, where temperatures start at a minimum of 6°C (43°F) and peak at 39°C (102°F), with a significantly lower average of 22°C (72°F). This month experiences only 7 mm (0.3 in) of precipitation over just one day and a humidity level of 53%. For more detailed insights on March weather, check this link: El Castillo weather in March.
September and April showcase distinct weather patterns. September typically experiences warmer temperatures, with a minimum of 17°C (63°F) and an average of 26°C (80°F), soaring to a maximum of 38°C (101°F). In contrast, April sees milder temperatures, featuring a minimum of 9°C (48°F) and a similar maximum of 38°C (101°F), but a slightly lower average of 25°C (78°F). Additionally, September is marked by higher humidity at 82% and more precipitation, totaling 46 mm (1.8 in) over 7 days, whereas April boasts much drier conditions with only 2 mm (0.1 in) of rain and no rainy days. For more detailed information, check out El Castillo weather in April.
In September, the weather is generally warm with average temperatures around 26°C (80°F), peaking at a high of 38°C (101°F), while the humidity remains notably high at 82%. This month also sees a considerable amount of rain, with about 46 mm (1.8 inches) of precipitation occurring over approximately 7 days. In contrast, May offers slightly cooler temperatures, averaging 29°C (84°F) and reaching a maximum of 41°C (106°F), but with significantly less rainfall, totaling only 6 mm (0.2 inches) on just one day. The humidity is also much lower in May at 52%, making for a drier experience. For a detailed overview of the weather in May, you can check out El Castillo weather in May.
In comparing the weather of September and June, it's evident that both months exhibit warm temperatures but differ in several aspects. September experiences a minimum temperature of 17°C (63°F) and averages around 26°C (80°F), with a maximum reaching 38°C (101°F). Notably, this month sees a higher level of precipitation at 46 mm (1.8 inches) over 7 days, accompanied by a humidity level of 82%. In contrast, June has a slightly higher minimum temperature of 18°C (64°F) and an average of 30°C (86°F), with maximum temperatures soaring up to 42°C (107°F). June also enjoys lower precipitation levels of 16 mm (0.6 inches) over just 3 days and a humidity of 64%. For a more detailed look at June weather in the area, you can refer to El Castillo weather in June. Overall, while both months are warm, September is characterized by higher humidity and more rainy days compared to the drier and hotter June.
In comparing the weather of September and July, September tends to be slightly cooler with an average temperature of 26°C (80°F) compared to July's average of 29°C (84°F). While both months can experience high temperatures, September peaks at 38°C (101°F), just a degree lower than July's maximum of 39°C (103°F). Additionally, September sees more rainfall, averaging 46 mm (1.8 in) over about 7 days, in contrast to July's 30 mm (1.2 in) over 5 days. Humidity levels are also higher in September at 82%, compared to July’s 73%. For a more detailed look at July's weather, you can check El Castillo weather in July.
In comparing the weather between August and September, we can see notable differences. September tends to be slightly cooler, with a minimum temperature of 17°C (63°F) and an average of 26°C (80°F), while August has a higher minimum of 19°C (67°F) and an average of 29°C (84°F). Despite the maximum temperatures reaching the same peak of 38°C (101°F) during both months, September is notably wetter, receiving 46 mm (1.8 in) of precipitation over 7 days, compared to just 20 mm (0.8 in) over 3 days in August. Additionally, September experiences higher humidity levels at 82%, whereas August boasts a lower humidity of 71%. For more details on August weather, you can visit El Castillo weather in August.
September experiences warmer temperatures compared to October, with average highs reaching 26°C (80°F) and maximums climbing to 38°C (101°F). In contrast, October sees slightly cooler weather, with average highs of 24°C (75°F) and a maximum of 37°C (99°F). While September has more precipitation at 46 mm (1.8 in) over 7 days, October is drier with only 34 mm (1.3 in) falling over 4 days. Both months have high humidity, with September at 82% and October slightly higher at 83%. For more detailed information on October's weather, you can visit El Castillo weather in October.
In September, the weather is characterized by warm to hot temperatures, with a minimum of 17°C (63°F) and a maximum reaching up to 38°C (101°F). The month experiences moderate precipitation, totaling 46 mm (1.8 in) over about 7 days, paired with high humidity levels around 82%. In contrast, November brings cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 34°C (94°F), showcasing a significant drop in nighttime temperatures. The precipitation is notably less, with only 8 mm (0.3 in) falling over just 2 days, yet humidity remains consistent at 82%. For those interested in specifics about the climate during this time, check out El Castillo weather in November.
In September, the weather is significantly warmer, with average temperatures around 26°C (80°F) and peak highs reaching up to 38°C (101°F). The month experiences higher humidity at 82% and more frequent rainfall, witnessing about 46 mm of precipitation over 7 days. In contrast, December sees much cooler temperatures, with an average of 16°C (61°F) and a maximum of 31°C (88°F). The humidity remains relatively high at 84%, but precipitation drops to only 13 mm over just 2 days, making December drier than September. For more detailed insights, you can check out El Castillo weather in December.
As September rolls in, El Castillo experiences a unique shift in its climate that sets it apart from other months. With temperatures peaking at a sizzling 38°C (101°F) during the day and cooling down to a comfortable 17°C (63°F) at night, the weather showcases its range, allowing for both hot afternoons and refreshing evenings. This month also sees a notable increase in humidity, averaging around 82%, which contributes to a more tropical feel. Although precipitation is relatively limited with about 46 mm (1.8 in) over 7 days, the occasional showers provide much-needed relief from the heat. To learn more about how September compares with other months in El Castillo, explore the full details at El Castillo Climate.