September Weather in Comitan, Mexico

Last updated: April 22, 2025

In September, Comitan, Mexico, experiences a vibrant transition into the fall season marked by average temperatures around 21°C (71°F). Daily highs can reach a warm 30°C (87°F), while night temperatures dip to a refreshing low of 13°C (56°F). This month is also characterized by notable rainfall, with an average precipitation of 339 mm (13.3 in) spread across 23 days, contributing to a humidity level of 77%. The combination of warmth and extensive moisture creates a lush landscape, making it an intriguing time to explore the natural beauty and cultural richness of this charming town.

September Temperature in Comitan

In September, Comitan, Mexico, experiences a pleasant transition as temperatures begin to mellow, with minimums around 13°C (56°F) and a comfortable average of 21°C (71°F). The peak temperature hovers at 30°C (87°F), making it a great time for outdoor activities without the intense heat of summer. This month sets the stage for the cooler months ahead, reflecting a slight decline from the warmer averages seen in the preceding months. Overall, September offers a delightful blend of warmth and cool breezes, inviting visitors to savor the natural beauty of the region in a more temperate climate.

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

The chart illustrates September temperature patterns in Comitan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec666871737371727270706866
Data source: Temperature data for Comitan 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 Comitan

September emerges as a pivotal month for precipitation in Comitan, Mexico, showcasing a remarkable increase to 339 mm (13.3 in), the highest in the annual cycle. This surge is characterized by continuous rainfall over 23 days, setting the stage for the lush landscapes that become a trademark of the region. Following the peak of the rainy season, September’s downpour significantly surpasses the preceding months, particularly May and August, which also witness substantial rainfall, but fall short of September's deluge. This dramatic uptick not only highlights the peak of the wet season but also positions September as a crucial month in shaping the local ecosystem and agricultural practices, ensuring that Comitan thrives in its vibrant greenery.

September Precipitation Trends in Comitan

The chart displays monthly precipitation patterns in Comitan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec833251652821001933392674616
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Comitan

As September arrives in Comitan, Mexico, the humidity begins to rise, reaching 77%, a notable increase from the preceding months. This September figure is part of a discernible trend of elevated humidity that begins in the summer, peaking towards the end of the year. Following a gradual increase through August, where humidity measured 71%, September's levels signify the onset of the wetter season. The months ahead, particularly October and November, continue this trend, with humidity levels hovering around 78% and 82%, respectively. This seasonal shift highlights Comitan's lush and vibrant environment, shaped by the enriched moisture in the air as the year draws to a close.

September Average Humidity in Comitan

This chart illustrates the average monthly humidity levels in Comitan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Comitan

In September, Comitan, Mexico, continues to experience extreme UV index levels, registering a UV Index of 14. This indicates a consistent trend of hazardous sun exposure that has persisted since the earlier months of the year, with burn times remaining a mere 10 minutes. Following a summer filled with peaks at UV Index 15, September’s values reflect a slight dip, yet caution is still crucial for anyone venturing outdoors. As the month transitions into fall, it’s essential to remain vigilant against the sun's rays—protective measures are still highly recommended. For more detailed information on UV exposure levels throughout the year, visit Comitan UV Index.

Maximum UV Index Levels in Comitan for September

The chart shows the monthly maximum UV Index (UVI) for Comitan 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.
JanFebMarAprMayJunJulAugSepOctNovDec10131415151515141413109
Data source: Comitan 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 Comitan

September in Comitan, Mexico, typically ushers in a delightful blend of sunshine, contributing 291 hours of bright skies to the year's kaleidoscope. After the sun-drenched peaks of July, with its impressive 328 hours, and August, boasting 316 hours, September maintains a warm glow but shows a slight decline in daylight. This trend is consistent as the summer months gradually transition into the autumn season, where hours of sunlight dwindle slightly each month. Following September, October sees a modest increase to 295 hours, hinting at a gentle invitation for fall. Overall, this pattern reflects Comitan's rich seasonal rhythm, where each month radiates its unique charm under the sun.

Monthly Sunshine Duration in Comitan: September Highlighted

The September sunshine duration represents the total number of hours Comitan 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.
JanFebMarAprMayJunJulAugSepOctNovDec250h286h323h313h317h279h328h316h291h295h305h313h
Data source: Comitan September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Comitan During September

In Comitan, Mexico, September marks a significant shift in the weather, as the likelihood of sunny days drops to just 20%. This trend follows the peak sunny months of January through March, where chances soar above 70%. As spring transitions into summer, the sun becomes increasingly elusive, with June and August showcasing remarkably low percentages of sunshine at 15% and 19%, respectively. By September, the sunshine continues to dwindle, highlighting a pattern of reduced brightness as the region approaches the rainy season. However, the gradual increase in sun chance begins again in October, suggesting that while September may be grey, brighter days are just around the corner.

Percentage of Sunny Days in September in Comitan

The chart illustrates the percentage of sunny days in Comitan 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 Comitan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec58%85%78%53%33%15%25%19%20%37%57%71%
Data source: Comitan September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Comitan in September

September in Comitan, Mexico, offers a delightful 12 hours of daylight, maintaining the balanced trend seen throughout the summer months. After reaching its peak in June with 13 hours, daylight durations gradually taper off but remain consistent at 12 hours from March through September. As the year progresses into October, daylight then decreases to 11 hours. This pattern highlights a climate that enjoys extended sunlight during the warmer months, making September an ideal time to bask in the vibrant landscapes and lively atmosphere of this enchanting city.

Average Daylight Hours in Comitan for September

The chart illustrates the variation in daylight duration in Comitan throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 16m11h 36m12h 2m12h 30m12h 53m13h 4m12h 58m12h 37m12h 11m11h 44m11h 21m11h 9m
Data source: Comitan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Comitan

As September sweeps through Comitan, Mexico, the wind whispers at a gentle 1.2 m/s (3 mph), marking a subtle decline in breeziness compared to the months prior. This month's calmness follows the summer's flurry, where July showcased a livelier wind speed of 2.0 m/s (4 mph). Throughout the year, winds varied, peaking during the slightly more robust spring months of March and April, before tapering into the more languid transitions of late summer and early autumn. This trend of softer winds in September signals a shift towards cooler, quieter days ahead, allowing the vibrant landscape of Comitan to bask in the tranquility of the season.

Average September Wind Speed in Comitan

The chart displays monthly wind speed patterns in Comitan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.82.02.12.01.51.22.01.41.2 m/s1.21.81.8
Data source: Comitan September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Comitan Compares to Other Months

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

In September, temperatures range from a minimum of 13°C (56°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F). The month is marked by significant rainfall, totaling 339 mm (13.3 in) across 23 days, and the humidity hovers around 77%. In contrast, January offers milder temperatures, with a minimum of 7°C (45°F) and a maximum of 29°C (85°F), averaging 19°C (66°F). This month experiences minimal rainfall, with only 8 mm (0.3 in) over the course of just 1 day, while humidity levels are slightly higher at 84%. For more information about the weather patterns in January, you can visit Comitan weather in January.

September and February present contrasting weather patterns. In September, the temperatures fluctuate from a minimum of 13°C (56°F) to a maximum of 30°C (87°F), with an average of 21°C (71°F). This month is characterized by high precipitation, receiving around 339 mm (13.3 in) over 23 days, accompanied by a humidity level of 77%. In stark contrast, February sees cooler temperatures, with a minimum of 9°C (48°F) and a slightly higher maximum of 31°C (89°F), averaging 20°C (68°F). Remarkably dry, February experiences only 3 mm (0.1 in) of precipitation, with no rainy days and a lower humidity of 73%. For more details on February's weather, you can check Comitan weather in February.

September and March showcase a striking contrast in weather patterns. September experiences a mild temperature range, with minimums around 13°C (56°F) and maximums reaching 30°C (87°F), but it is also marked by significant rainfall, averaging 339 mm (13.3 in) over 23 days and a high humidity level of 77%. In contrast, March presents slightly cooler minimum temperatures of 11°C (52°F) and warmer maximums of 33°C (92°F), yet it boasts a much drier climate with only 3 mm (0.1 in) of precipitation over no rainy days and a lower humidity of 59%. This makes March a much sunnier and more comfortable month compared to the often wet and humid September. For more details on March weather, visit Comitan weather in March.

September and April present contrasting weather patterns. September experiences a milder average temperature of 21°C (71°F), with highs reaching up to 30°C (87°F) and considerable humidity at 77%. It is also marked by frequent rainfall, totaling 339 mm (13.3 in) over 23 days. In contrast, April tends to be warmer, with an average temperature of 23°C (73°F) and maximums soaring to 34°C (93°F). Additionally, April boasts significantly less precipitation, only 25 mm (1.0 in) over 6 days, and lower humidity at 52%. For a deeper look into April's weather specifics, you can visit Comitan weather in April.

September and May present contrasting weather patterns, with May generally being warmer and drier than September. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 33°C (92°F), with an average of 23°C (73°F). In contrast, September sees cooler temperatures, starting at 13°C (56°F) and peaking at 30°C (87°F), averaging around 21°C (71°F). Additionally, September experiences significantly higher precipitation at 339 mm (13.3 in) over 23 days, while May averages only 165 mm (6.5 in) over 22 days. Humidity levels are also lower in May at 53%, compared to the more humid September, which has a humidity level of 77%. For more specific information, you can check Comitan weather in May.

September and June share similar average temperatures, both around 21°C (71°F) with maximums reaching up to 30°C (87°F). However, September tends to be cooler at night, with a minimum temperature of 13°C (56°F) compared to June's 15°C (59°F). Notably, September experiences significantly higher precipitation, with 339 mm (13.3 in) over 23 days, whereas June has slightly less at 282 mm (11.1 in) over 25 days. Additionally, the humidity in September is noticeably higher at 77%, while June maintains a more comfortable 55% humidity level. For a detailed look at June weather in Comitan, you can visit Comitan weather in June.

When comparing the weather in September to that of July, we see some notable differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 30°C (87°F), compared to July's range of 14°C (58°F) to 32°C (90°F). Humidity levels are significantly higher in September at 77%, while July has a more comfortable humidity of 61%. Additionally, September experiences much more precipitation, with 339 mm (13.3 in) over 23 days, in stark contrast to July's 99 mm (3.9 in) across just 12 days. For more detailed insights, you can check Comitan weather in July.

In comparing the weather between August and September, it's evident that both months experience mild to warm temperatures, though September tends to be slightly cooler. September's minimum temperature averages at 13°C (56°F) compared to August's 14°C (57°F), while the average maximum in September reaches 30°C (87°F), a notch below August’s high of 32°C (89°F). Notably, September sees a significant increase in precipitation, with 339 mm (13.3 in) recorded over 23 days, compared to August’s 193 mm (7.6 in) over 18 days. This results in a higher humidity level in September at 77%, up from August’s 71%. For more detailed insights, you can check Comitan weather in August.

In comparing the weather patterns of September and October, both months show a similar temperature range, with minimums around 13°C (56°F) and average temperatures hovering around 21°C (70-71°F). However, October tends to be slightly cooler, with a maximum temperature of 29°C (84°F) compared to September’s peak of 30°C (87°F). Precipitation decreases significantly in October, totaling 267 mm (10.5 in) over 21 days, down from 339 mm (13.3 in) over 23 days in September. Overall, October maintains a slightly higher humidity level at 78%, compared to September's 77%. For detailed insights on the weather conditions, you can visit Comitan weather in October.

In comparing September and November weather, September is warmer and wetter, with average temperatures ranging from 13°C (56°F) to a maximum of 30°C (87°F) and a substantial 339 mm (13.3 in) of precipitation over 23 days. In contrast, November experiences slightly cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 29°C (85°F), along with significantly reduced rainfall totaling just 46 mm (1.8 in) across 8 days. Additionally, humidity levels are relatively high in both months, with September at 77% and November slightly higher at 82%. For a more detailed overview, check out Comitan weather in November.

September and December present distinct weather patterns. In September, the temperatures range from a minimum of 13°C (56°F) to a maximum of 30°C (87°F), with an average temperature of 21°C (71°F). This month is characterized by significant rainfall, totaling 339 mm (13.3 in) over 23 days, and a humidity level of 77%. In contrast, December offers cooler temperatures, with a minimum of 8°C (46°F), an average of 19°C (66°F), and a maximum of 29°C (85°F). Rainfall is minimal at 16 mm (0.6 in) over just 3 days, and the humidity rises slightly to 86%. For more details on December weather, visit Comitan weather in December.

Compare Comitan's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Comitan

In September, Comitan experiences a notable shift in weather, characterized by a blend of warm temperatures and significant rainfall. Unlike the drier months, this period sees the average temperature hovering around a comfortable 21°C, with maximums reaching 30°C, while overnight lows can drop to a cool 13°C. The high humidity levels of 77% coupled with nearly three-quarters of the month seeing rain contributes to a lush, vibrant landscape, distinguishing it from the clearer skies typical of earlier months. This transition to a wetter season not only enhances the region's natural beauty but also plays a crucial role in the local ecosystem. For more insights into Comitan's year-round weather patterns, visit Comitan Climate.