September Weather in Chapala, Mexico

Last updated: April 22, 2025

September in Chapala, Mexico offers a warm and humid climate, with maximum temperatures reaching 29°C (84°F) and an average of 21°C (70°F). Visitors can expect a comfortable range as temperatures rarely dip below 16°C (60°F). However, this month is notably wet, featuring 185 mm (7.3 in) of rainfall over approximately 22 days, resulting in a humidity level of 84%. This combination of warmth and moisture creates a lush environment, perfect for enjoying the region's natural beauty amid the frequent, refreshing showers.

September Temperature in Chapala

September in Chapala, Mexico, offers a gentle transition as the summer fades, with temperatures showcasing a harmonious blend of warmth and comfort. The month greets you with a minimum temperature of 16°C (60°F), allowing for mild mornings and evenings, while the average temperature hovers around a pleasant 21°C (70°F). This is complemented by maximum daytime temperatures reaching up to 29°C (84°F), making it ideal for outdoor activities and enjoying the picturesque lakeside views. As summer's peak cools down, September presents a delightful climate that invites both relaxation and exploration, continuing the trend of gradual temperature declines as the year progresses.

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

The chart illustrates September temperature patterns in Chapala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec626570727573707069696663
Data source: Temperature data for Chapala generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Chapala

September in Chapala, Mexico, marks a significant peak in the region's rainfall, with 185 mm (7.3 in) of precipitation falling over 22 days. This trend solidifies September's position as part of the latter monsoon season, closely following the heavy rains of August, which recorded 191 mm (7.5 in). The increased precipitation not only enriches the area's lush landscapes but also supports local agriculture as it prepares for the transition into drier months. As the summer storms taper off in October, when only 62 mm (2.4 in) is expected over 11 days, September's abundance serves as a vital resource, highlighting its critical role in the annual hydrological cycle of Chapala.

September Precipitation Trends in Chapala

The chart displays monthly precipitation patterns in Chapala, 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.
JanFebMarAprMayJunJulAugSepOctNovDec610211711217919118562185
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Chapala

As September arrives in Chapala, Mexico, residents and visitors alike experience a noticeable increase in humidity, averaging a significant 84%. This marks the apex of the year’s humidity levels, following the gradual rise seen since June, when moisture levels began to surge. After the drier months of April and May, which featured lows of 42% and 51% respectively, the wet season grips the region, typically peaking in late summer. While the air becomes heavy and thick with moisture, it underscores the lush beauty of Chapala's landscape during this vibrant time of year. As the month transitions to October, humidity gradually decreases to 75%, hinting at the impending return to more moderate conditions.

September Average Humidity in Chapala

This chart illustrates the average monthly humidity levels in Chapala, 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.
JanFebMarAprMayJunJulAugSepOctNovDec64%57%46%43%51%74%79%81%84%75%71%74%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chapala

In September, Chapala, Mexico, experiences an intense UV Index of 14, classified as extreme, with a quick burn time of just 10 minutes. This peak in UV intensity reflects a consistent trend observed throughout the summer months, where values hovered between 13 and 14. As the rainy season approaches, it's crucial for residents and visitors alike to remain vigilant about sun exposure during this period, ensuring proper protection against the sun’s harmful rays. The UV levels in September echo the extreme conditions from May through August, making sun safety a priority. For more detailed insights, check the Chapala UV Index.

Maximum UV Index Levels in Chapala for September

The chart shows the monthly maximum UV Index (UVI) for Chapala 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.
JanFebMarAprMayJunJulAugSepOctNovDec911141414141313141298
Data source: Chapala 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 Chapala

September in Chapala, Mexico, offers a generous 286 hours of sunshine, making it a delightful time for outdoor enthusiasts. As summer draws to a close, the city experiences a slight dip in sunlight hours from the highs of the earlier months, yet still retains a warm glow. This trend of decreasing daylight began in July, where visitors enjoyed over 300 hours, then gradually softened in August. September's sunshine serves as a gentle transition into autumn, maintaining a vibrant atmosphere ideal for exploring the scenic lakeside and immersing in local culture. Overall, the warm days and pleasant evenings reflect Chapala's unique charm, encouraging both relaxation and adventure.

Monthly Sunshine Duration in Chapala: September Highlighted

The September sunshine duration represents the total number of hours Chapala 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.
JanFebMarAprMayJunJulAugSepOctNovDec231h270h321h327h342h309h313h308h286h291h280h288h
Data source: Chapala September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Chapala During September

When considering the likelihood of sunny weather in September in Chapala, Mexico, it’s important to note that this month typically sees only an 18% chance of sunshine. This trend marks a significant dip from the sunnier spring months like February and March, which boast probabilities as high as 85% and 81% respectively. As the rainy season progresses—reaching its peak in the summer—the sunshine diminishes, with June through August experiencing similarly low odds. However, hope is not lost; as the region transitions into the fall, the chances of sunnier days start to rise again in October, reaching 34%. So while September may be less than bright, the promise of clearer skies is just around the corner!

Percentage of Sunny Days in September in Chapala

The chart illustrates the percentage of sunny days in Chapala 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 Chapala experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec60%85%81%73%70%20%15%18%19%34%61%64%
Data source: Chapala September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Chapala in September

In Chapala, Mexico, September marks a transition in daylight duration, as the city enjoys approximately 12 hours of sunlight each day. This month continues the trend established over the summer, where daylight peaks at 13 hours from May through August, providing ample time for outdoor activities and exploration. As the year progresses into fall, September’s daylight pattern gradually shifts towards shorter days, foreshadowing the approaching winter months that bring around 11 hours of sunlight in October and November. Overall, the consistent daylight in September offers a vibrant atmosphere, creating the perfect backdrop for enjoying the natural beauty that Chapala is renowned for.

Average Daylight Hours in Chapala for September

The chart illustrates the variation in daylight duration in Chapala throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 2m11h 28m12h 2m12h 36m13h 5m13h 19m13h 12m12h 46m12h 13m11h 38m11h 9m10h 54m
Data source: Chapala daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Chapala

As September settles over Chapala, Mexico, the gentle embrace of the September wind whispers a familiar tune. With an average speed of 1.3 m/s (3 mph), this month's breeze reflects the calmness of late summer, paralleling the mellow winds of August. Notably, September marks a continuation of the gradual decline in wind speed observed during the summer months, which began its downward trend in July. This consistent, soft wind offers a perfect backdrop for leisurely strolls along the lakeshore or relaxing afternoons spent under the shade of vibrant local trees. As the year transitions into autumn, the winds remain mild, inviting residents and visitors alike to savor the serene beauty of the season.

Average September Wind Speed in Chapala

The chart displays monthly wind speed patterns in Chapala, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.81.71.91.61.51.21.31.3 m/s1.41.51.4
Data source: Chapala September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Chapala Compares to Other Months

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

September and January present contrasting weather experiences. In September, temperatures typically range from a minimum of 16°C (60°F) to a maximum of 29°C (84°F), with an average of 21°C (70°F). This month is marked by significant rainfall, totaling 185 mm (7.3 in) over 22 days, and high humidity levels at 84%. In stark contrast, January offers cooler conditions with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 29°C (85°F), averaging 17°C (62°F). This winter month sees a dramatic decrease in precipitation, with just 6 mm (0.2 in) over only 1 day and lower humidity at 64%. For a more detailed overview, visit Chapala weather in January.

September and February present distinctly different weather patterns. September typically enjoys warmer temperatures, with a range from a minimum of 16°C (60°F) to a maximum of 29°C (84°F) and an average of 21°C (70°F). However, it is also one of the wetter months, experiencing about 185 mm (7.3 in) of precipitation over 22 days, contributing to a high humidity level of 84%. In contrast, February features milder conditions with lower minimum temperatures of 5°C (42°F) and maximums reaching 31°C (87°F), averaging 18°C (65°F). Notably, February is much drier, with only 10 mm (0.4 in) of rainfall spread over just 2 days, leading to a significantly reduced humidity of 57%. For more details on February weather, visit Chapala weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a mild 16°C (60°F) to a warm 29°C (84°F), accompanied by significant rainfall of 185 mm (7.3 in) over 22 days, resulting in a high humidity level of 84%. This month often feels quite sultry, highlighting the onset of the rainy season. In contrast, March sees cooler nights with a minimum temperature of 9°C (48°F) but can reach a maximum of 33°C (92°F) during the day. Precipitation is minimal, with only 2 mm (0.1 in) and no rainy days, leading to a much drier atmosphere with a humidity level of just 46%. This shift from September's humidity and rain to March's dry warmth can make a noticeable impact on outdoor activities. For more insights, check out Chapala weather in March.

September and April exhibit contrasting weather patterns, making each month unique in its own right. September typically sees a milder temperature range with minimums around 16°C (60°F) and maximums reaching up to 29°C (84°F), while averaging at a comfortable 21°C (70°F). However, this month experiences significant rainfall, with 185 mm (7.3 in) of precipitation spread over 22 days, contributing to a high humidity level of 84%.

In contrast, April boasts warmer temperatures, with lows of 10°C (50°F) and highs peaking at 33°C (92°F), averaging at a pleasant 22°C (73°F). Notably, it features minimal precipitation, with only 1 mm (0.0 in) recorded across the month and no rainy days, resulting in a much lower humidity of 42%. This makes April a dry and warm month compared to the wet and humid conditions of September. For more detailed information about the weather in April, you can visit Chapala weather in April.

September and May present contrasting weather patterns. In September, the temperatures range from a mild 16°C (60°F) to a warm 29°C (84°F), with an average of 21°C (70°F). This month is characterized by high humidity at 84% and substantial rainfall, receiving 185 mm (7.3 in) over 22 days. In contrast, May boasts warmer temperatures, with a minimum of 10°C (51°F) and a maximum of 35°C (96°F), averaging 24°C (75°F). Additionally, May sees significantly less precipitation, only 17 mm (0.7 in) over just 4 days and lower humidity levels at 51%. For more detailed insights about May weather, you can visit Chapala weather in May.

When comparing the weather in September to that of June, it is evident that June typically offers warmer temperatures, with average highs reaching up to 35°C (96°F) compared to September's maximum of 29°C (84°F). June also sees slightly lower humidity levels at 74%, while September's humidity sits at a higher 84%, contributing to a more humid feel during the latter month. Furthermore, September experiences more rainfall, accumulating 185 mm (7.3 in) over 22 days, while June has 112 mm (4.4 in) spread over just 16 days. For a detailed look at June weather patterns, visit Chapala weather in June.

In comparing the weather of September and July, both months exhibit similar average temperatures, typically hovering around 21°C (70°F). However, July tends to be slightly warmer, with a maximum temperature of 30°C (87°F) compared to September's peak of 29°C (84°F). Precipitation is notable in both months, with September receiving 185 mm (7.3 in) over 22 days, while July sees a bit less at 179 mm (7.0 in) spread across 26 days. Additionally, September is characterized by higher humidity levels at 84%, compared to July’s more comfortable 79%. For further insights into July's climate, you can check Chapala weather in July.

In comparing the weather between August and September, we see some notable differences. September tends to be slightly warmer at night, with a minimum temperature of 16°C (60°F) compared to August's 14°C (58°F). Both months share an average maximum temperature of around 29°C (85°F), but September's overall humidity increases to 84%, surpassing August's 81%. Precipitation is also slightly higher in September, with 185 mm (7.3 in) falling over 22 days, compared to August’s 191 mm (7.5 in) over 26 days. For more detailed insights on August weather, you can visit Chapala weather in August.

September typically features warmer temperatures with a minimum of 16°C (60°F) and an average of 21°C (70°F), reaching a maximum of 29°C (84°F). However, it is also quite rainy, with precipitation totaling 185 mm (7.3 in) across 22 days and humidity levels around 84%. In contrast, October sees a slight cooling trend, with minimum temperatures dropping to 12°C (53°F) and an average of 20°C (69°F), while the maximum temperature can reach up to 30°C (86°F). Remarkably, October experiences significantly less rainfall, totaling just 62 mm (2.4 in) over 11 days, accompanied by a lower humidity of 75%. For more detailed information, you can check Chapala weather in October.

In September, temperatures are generally warmer, with a minimum of 16°C (60°F) and an average of 21°C (70°F), reaching a maximum of 29°C (84°F). This month is characterized by high precipitation, totaling 185 mm (7.3 in) over 22 days, contributing to a humid atmosphere with 84% humidity. In contrast, November experiences cooler temperatures, with a minimum of 7°C (45°F) but still an average high of 29°C (85°F). Notably, precipitation drops significantly to just 18 mm (0.7 in) over only 2 days, and humidity decreases to 71%. For more detailed information, you can check Chapala weather in November.

September and December offer distinctly different weather experiences. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 29°C (84°F), with an average temperature of 21°C (70°F). The month is characterized by significant rainfall, totaling 185 mm (7.3 in) over 22 days, and high humidity levels at 84%. In contrast, December presents a much cooler climate with a minimum temperature of 5°C (42°F) and an average of 17°C (63°F), peaking at 28°C (83°F). Precipitation drops dramatically to just 5 mm (0.2 in) over a single day, and humidity decreases to 74%. For more details on December weather, check out Chapala weather in December.

Compare Chapala's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Chapala

As September rolls into Chapala, the weather takes on a distinct character, characterized by high humidity levels and frequent rainfall, making it one of the wetter months of the year. While daily temperatures remain mild and pleasant, with averages around 21°C (70°F), the month feels noticeably more humid compared to the drier summer months. With approximately 22 days of precipitation, locals and visitors alike can expect lush landscapes, adding a vibrant charm to the region. This combination of warmth and moisture not only refreshes the atmosphere but also sets the stage for the stunning natural beauty Chapala is known for. For a deeper dive into what to expect throughout the year, explore the complete Chapala Climate.