September Weather in Janitzio, Mexico

Last updated: April 22, 2025

September in Janitzio, Mexico, brings a mild climate characterized by a maximum temperature of 26°C (80°F) and a cozy average of 17°C (63°F), dipping to a minimum of 11°C (52°F) at night. This month is marked by high humidity levels at 85%, creating a lush environment. However, visitors should be prepared for frequent rain, as the region experiences an impressive 333 mm (13.1 in) of precipitation over 29 days. Whether you’re exploring the lake or enjoying local cuisine, this vibrant weather sets the stage for a memorable experience in Janitzio.

September Temperature in Janitzio

In September, Janitzio, Mexico, experiences a harmonious balance in temperatures, reflecting a mild transitional period as summer gives way to fall. With minimums hovering around 11°C (52°F) and maximums peaking at 26°C (80°F), visitors can expect comfortably warm days complemented by cooler evenings. The average temperature of 17°C (63°F) signifies a steady trend from the preceding summer months, where highs remain consistent, making it an inviting time for outdoor exploration. As the season shifts, September offers a pleasant reprieve, blending the lingering warmth of summer with the crispness of autumn, perfect for both leisurely strolls and cultural festivities.

September Weather in Janitzio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Janitzio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec565861646564636363625956
Data source: Temperature data for Janitzio generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Janitzio

In September, Janitzio, Mexico, experiences a significant rainfall event, with an impressive 333 mm (13.1 in) of precipitation over nearly the entire month, recording 29 wet days. This trend highlights a culmination of the rainy season, where the region peaks in moisture accumulation, following a pattern established in the preceding months. The rainfall volume, while slightly lower than the heights of July and August, remains substantial, ensuring the vibrant landscapes continue to flourish. As the summer months draw to a close, September serves as a crucial transitional period in Janitzio, reinforcing the area's lush greenery before the drier autumn months set in.

September Precipitation Trends in Janitzio

The chart displays monthly precipitation patterns in Janitzio, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec131518131022753904033331874912
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Janitzio

In January, Janitzio, Mexico experiences a moderate humidity level of 70%, setting the stage for a gradual increase as the months progress. By February, the humidity dips slightly to 64%, but soon begins an upward trend. From March’s 54%—the year's lowest—humidity rises consistently, peaking at an impressive 85% by August and maintaining this level into September. This notable humidity trend reflects the region's transition into the warm and lush months, with June, July, and August showcasing the wettest conditions. As the summer wanes into October, humidity begins to recede, suggesting that while Janitzio enjoys a sticky summer, it prepares for a gradual drying as fall approaches.

September Average Humidity in Janitzio

This chart illustrates the average monthly humidity levels in Janitzio, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Janitzio

In January, Janitzio experiences a UV Index of 10, indicating a very high level of ultraviolet exposure with a burn time of just 15 minutes. As the months progress into February and beyond, the UV Index escalates sharply to 12 in February and peaks at 15 in April, classifying the exposure as extreme with a reduced burn time of only 10 minutes. This intense UV radiation persists through the summer months, maintaining a steady Index of 14 from March to September, which underscores the need for vigilant sun protection. As the year closes, the index gradually decreases, falling to 10 in November and 9 in December, yet still remaining within the very high category. The consistent trend of extreme UV levels during the warmer months makes it crucial for visitors to be proactive about sun safety when enjoying the beautiful landscape of Janitzio. For more information, visit the Janitzio UV Index.

Maximum UV Index Levels in Janitzio for September

The chart shows the monthly maximum UV Index (UVI) for Janitzio in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec10121415141414141412109
Data source: Janitzio September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Janitzio

In Janitzio, Mexico, September boasts an impressive 270 hours of sunshine, making it a delightful time to experience the vibrant atmosphere of this charming island. While the month sees a slight decrease in sunshine compared to the sunnier days of May (330 hours) and April (322 hours), it still enjoys a favorable position among the year’s offerings. Interestingly, the pattern leading up to September indicates a gentle decline from the peak sunshine seen in early spring, with March reaching 320 hours, which gradually tapers off into the calmer days of autumn. This trend reflects a seasonal transition that invites visitors to enjoy mild weather, almost perfect for exploring the stunning scenery and rich culture. The overall sunshine hours remain consistently high throughout the year, particularly during the early months, emphasizing Janitzio’s allure as a year-round destination for sun-seekers.

Monthly Sunshine Duration in Janitzio: September Highlighted

The September sunshine duration represents the total number of hours Janitzio experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec237h273h320h322h330h282h295h287h270h285h280h290h
Data source: Janitzio September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Janitzio During September

In September, Janitzio, Mexico, experiences a notable decline in sunny days, with only a 15% chance of sunshine. This marks a significant drop from the higher probabilities seen in the earlier summer months, where the sun is more prevalent, such as in February with 94% and March at 81%. The transition into autumn signals a shift, as July and August come in with even lower averages of 9% and 14% respectively. The weather begins to trend towards more cloudy days, hinting that visitors should prepare for a mix of sun and clouds as the month unfolds. As October approaches, there's a slight recovery with a 30% chance of clear skies, but September remains one of the least favorable months for sun-seeking activities in this picturesque locale.

Percentage of Sunny Days in September in Janitzio

The chart illustrates the percentage of sunny days in Janitzio throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Janitzio experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%94%81%70%58%9%9%14%15%30%62%69%
Data source: Janitzio September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Janitzio in September

As the seasons shift in Janitzio, Mexico, the daylight duration creates a rhythmic pattern that reflects the changing year. In January and February, the sun graces the island for 11 hours, providing a gentle start to the year. As March arrives, daylight extends to 12 hours, hinting at the impending warmth of spring. This increase continues into April and May, where residents enjoy 13 hours of sunlight, perfect for outdoor activities and vibrant local festivities. However, as summer peaks with consistent daylight, the hours gradually taper off starting in August with 12 hours, followed closely by September. The cycle concludes as autumn sets in, bringing back the 11 hours seen in the early months of the year. This transition showcases the natural ebb and flow of light in Janitzio, highlighting the island's unique relationship with its environment.

Average Daylight Hours in Janitzio for September

The chart illustrates the variation in daylight duration in Janitzio throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 5m11h 30m12h 2m12h 35m13h 2m13h 16m13h 8m12h 44m12h 12m11h 40m11h 12m10h 58m
Data source: Janitzio daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Janitzio

As September approaches in Janitzio, Mexico, the gentle whispers of wind begin to signal a subtle shift in the seasons. With an average wind speed of 1.3 m/s (3 mph), September mirrors the softer breezes of summer while hinting at the cooler days to come. This slight decline from the spring and early summer months, where winds reached up to 1.9 m/s (4 mph) in April, reveals a natural ebb in the climate as it transitions toward autumn. Interestingly, September's winds remain consistent with the calmer flow experienced in July and August, creating a tranquil atmosphere that invites both locals and visitors to bask in the serene beauty of this lakeside paradise. Overall, the gentle breezes of September set the stage for the enchanting transformations that lie ahead in Janitzio.

Average September Wind Speed in Janitzio

The chart displays monthly wind speed patterns in Janitzio, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.71.61.91.51.51.21.41.3 m/s1.41.41.4
Data source: Janitzio September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Janitzio Compares to Other Months

The weather in Janitzio 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 Janitzio and find detailed weather information for every month.

In September, the weather is markedly warmer and more humid compared to January. With average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (80°F), September experiences a significant amount of rainfall, totaling 333 mm (13.1 in) over 29 days, resulting in a high humidity level of 85%. In contrast, January's milder climate features lower temperatures, with a minimum of 2°C (36°F) and an average of 13°C (56°F). Additionally, January sees minimal precipitation, only 13 mm (0.5 in) over just 3 days, and lower humidity at 70%. For more detailed information on January weather specifics, you can refer to Janitzio weather in January.

September and February present distinctly different weather patterns. In September, temperatures range from a chilly minimum of 11°C (52°F) to a comfortable maximum of 26°C (80°F), with an average of 17°C (63°F). The month is characterized by high humidity at 85% and significant precipitation, totalling 333 mm (13.1 in) over 29 days, making it one of the wetter times of the year. In contrast, February features milder temperatures, with a minimum of 2°C (35°F) and a maximum of 27°C (81°F), yielding an average of 14°C (58°F). Notably, February sees much lower precipitation at just 15 mm (0.6 in) over only 2 days and lower humidity at 64%. For more information on February's weather specifics, visit Janitzio weather in February.

September and March present distinct contrasts in weather patterns. In September, temperatures range from a cool minimum of 11°C (52°F) to a warm maximum of 26°C (80°F), with an average temperature of 17°C (63°F). This month is marked by high precipitation, with 333 mm (13.1 in) falling over 29 days, accompanied by a high humidity level of 85%. Conversely, March offers a milder climate with minimum temperatures of 5°C (41°F) and maximums reaching 29°C (84°F), averaging at 16°C (62°F). Rainfall is minimal, totaling just 18 mm (0.7 in) over 5 days, and the humidity decreases significantly to 54%. These differences highlight September's wet and humid conditions compared to March's drier and warmer environment, making each month unique in its weather characteristics. For more specific details on March weather, you can check out Janitzio weather in March.

September and April present distinct contrasts in weather patterns. In September, the temperature ranges from a cooler minimum of 11°C (52°F) to a maximum of 26°C (80°F), with an average of 17°C (63°F). This month is also characterized by high humidity at 85% and significant rainfall, totaling 333 mm (13.1 in) over 29 days. In contrast, April experiences warmer temperatures, with a minimum of 6°C (43°F) and a maximum reaching up to 30°C (86°F), resulting in a slightly higher average of 18°C (64°F). April is notably drier, with only 13 mm (0.5 in) of precipitation over just 3 days and lower humidity at 61%. For more detailed insights into April’s weather, you can visit Janitzio weather in April.

September and May exhibit distinct weather patterns, reflecting the transition between seasons. In September, temperatures range from a cool 11°C (52°F) to a warm 26°C (80°F), with an average of 17°C (63°F), making it feel quite mild. However, it is also the wettest month, with 333 mm (13.1 in) of precipitation spread over 29 days, resulting in a high humidity level of 85%. In contrast, May features slightly warmer temperatures with a minimum of 7°C (45°F) and a maximum of 30°C (86°F), averaging at 19°C (66°F). Precipitation is significantly lower in May, totaling just 102 mm (4.0 in) over 13 days, along with a lower humidity level of 75%. This comparison highlights May as a drier and warmer month compared to the wet and mild conditions of September. For more information on the climate, you can visit Janitzio weather in May.

In September, the weather showcases a mild climate with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (80°F) and an average of 17°C (63°F). The month is characterized by high precipitation, receiving about 333 mm (13.1 in) over 29 days, along with elevated humidity levels at 85%. In contrast, June enjoys slightly warmer temperatures, with an average of 18°C (64°F), peaking at 30°C (86°F) while maintaining a similar minimum of 11°C (52°F). Although June also experiences frequent rainfall, it totals around 274 mm (10.8 in) across 26 days and slightly lower humidity at 83%. For more specific details on the June weather conditions, you can visit Janitzio weather in June.

In comparing the weather between September and July, both months showcase similar average temperatures, hovering around 17°C (63°F), but September tends to bring slightly milder conditions overall. July has a comparable minimum temperature of 10°C (51°F) and a maximum of 26°C (79°F), while September sees its minimum rise to 11°C (52°F) and maintains a maximum of 26°C (80°F). Precipitation levels, however, are notably different; September receives 333 mm (13.1 in) of rain over 29 days, while July experiences more rainfall at 390 mm (15.4 in) across 30 days. Humidity is also high in both months, with July at 83% and September slightly higher at 85%. For those interested in in-depth data about summer weather, check out Janitzio weather in July.

In comparing the weather of September to August, we notice they share similar temperature ranges, with both months featuring minimums of 11°C (52°F), averages of 17°C (63°F), and maximums of 26°C (80°F). However, September experiences slightly less precipitation, totaling 333 mm (13.1 in) across 29 days, compared to August's 403 mm (15.9 in) over 30 days. Both months also exhibit a consistent humidity level of 85%, making them similarly humid. For more details on the weather patterns in August, you can refer to Janitzio weather in August.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (80°F), while maintaining an average of 17°C (63°F). This month also sees significant rainfall, with a total precipitation of 333 mm (13.1 in) spread across 29 days and humidity levels averaging around 85%.

In contrast, October experiences cooler temperatures, dropping to a minimum of 7°C (45°F) and maintaining a similar average of 17°C (62°F) with a maximum temperature of 26°C (79°F). Additionally, there is less rainfall in October, totaling 187 mm (7.4 in) over 20 days, and humidity decreases to 79%. For more details on the October weather in Janitzio, you can visit Janitzio weather in October.

September weather is characterized by warmer temperatures, with daily averages reaching up to 17°C (63°F) and maximums hitting 26°C (80°F). However, it also experiences significant rainfall, with 333 mm (13.1 in) spread over 29 days, leading to high humidity levels at 85%. In contrast, November sees cooler temperatures, with a minimum of 3°C (38°F) and an average of 15°C (60°F), yet it retains the same maximum temperature of 26°C (80°F). Precipitation decreases dramatically to 49 mm (1.9 in) over just 7 days, along with a slight reduction in humidity to 76%. For more detailed weather information, you can check Janitzio weather in November.

In September, the weather is significantly warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 26°C (80°F). The month also sees substantial rainfall, accumulating 333 mm (13.1 in) over 29 days and maintaining a high humidity level of 85%. In contrast, December brings much cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (57°F), while the maximum only reaches 25°C (78°F). Additionally, December is notably drier, with only 12 mm (0.5 in) of precipitation falling over just 2 days, and humidity dropping to 74%. For more details about the December weather in Janitzio, visit Janitzio weather in December.

Compare Janitzio's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Janitzio

As September rolls in, Janitzio experiences a notable shift in climate, characterized by increased humidity and nearly continuous precipitation, setting it apart from other months. This wet season brings a refreshing yet cool ambiance with temperatures averaging a mild 17°C (63°F), contrasting sharply with hotter summer months. Visitors to the island should be prepared for the likelihood of rain nearly every day, contributing to a lush, vibrant landscape that enhances Janitzio's natural beauty. For those keen on understanding the comprehensive climate patterns of the area, more details can be found at Janitzio Climate.