September Weather in Ixtapa-Zihuatanejo, Mexico

Last updated: April 22, 2025

Experience the captivating September weather of Ixtapa-Zihuatanejo, Mexico, where the coastal charm meets tropical warmth. With maximum temperatures reaching a sizzling 32°C (90°F) and a soothing average of 26°C (78°F), this paradise invites visitors to bask in its sun-kissed allure. However, anticipate frequent showers, as 24 days are marked by an impressive 304 mm (12.0 in) of precipitation, contributing to the region's lush landscapes. Humidity levels hover around 78%, enhancing the vibrant feel of this beach destination. Whether you're seeking sun or embracing the rain, September offers a unique and refreshing experience in this beautiful Mexican locale.

September Temperature in Ixtapa-Zihuatanejo

In Ixtapa-Zihuatanejo, September brings a warm, tropical embrace, with temperatures consistently hovering between 22°C (72°F) at night and an inviting 32°C (90°F) during the day. As the month progresses, the average temperature reaches a comfortable 26°C (78°F), making it ideal for beach lovers and adventure seekers alike. Compared to the rest of the year, September showcases a slight increase in nighttime lows similar to the preceding months of July and August, while maintaining comparable daytime highs. The warm, humid air sets the stage for vibrant sunsets and the lively energy of coastal life, ensuring that September remains a popular choice for those seeking sun-soaked days in this picturesque Mexican paradise.

September Weather in Ixtapa-Zihuatanejo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ixtapa-Zihuatanejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec747475767779797978787675
Data source: Temperature data for Ixtapa-Zihuatanejo 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 Ixtapa-Zihuatanejo

September marks the peak of the rainy season in Ixtapa-Zihuatanejo, characterized by significant precipitation that reaches an impressive 304 mm (12.0 in) over 24 days. This month stands out as the wettest of the year, following a series of rainfall patterns that begin to intensify in June and peak in September before gradually tapering off in October. As summer transitions to fall, the relentless downpours can transform the landscape, nourishing lush vegetation and contributing to the vibrant beauty of this coastal paradise. Visitors should prepare for frequent showers, but these brief bursts of rain often give way to the warm, tropical sun, creating a dynamic and refreshing atmosphere that embodies the essence of this stunning destination.

September Precipitation Trends in Ixtapa-Zihuatanejo

The chart displays monthly precipitation patterns in Ixtapa-Zihuatanejo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec340012251116255304278476
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ixtapa-Zihuatanejo

As summer transitions into fall in Ixtapa-Zihuatanejo, September experiences a slight dip in humidity, settling at 78%. This marks a subtle decrease from the peak of 79% witnessed in August, indicating a gradual easing from the thick, tropical air of the summer months. Overall, the humidity levels throughout the year demonstrate a clear upward trend from the cooler, drier winter months, starting at 66% in January and steadily rising until late summer. As the rainy season begins to wane, October's humidity will drop further to 75%, providing a more comfortable atmosphere as the region bids farewell to the peak heat and prepares for the milder climate of fall.

September Average Humidity in Ixtapa-Zihuatanejo

This chart illustrates the average monthly humidity levels in Ixtapa-Zihuatanejo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%69%73%76%78%79%78%75%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ixtapa-Zihuatanejo

In September, visitors to Ixtapa-Zihuatanejo, Mexico, can expect a UV Index of 13, categorized as extreme with a burn time of just 10 minutes. This trend of high UV levels, peaking at 14 in June and remaining consistently extreme throughout the summer months, emphasizes the region's intense sun exposure. As the year progresses, the UV Index gradually declines, offering slight relief in the cooler months of November and December. For those planning outdoor activities, it's essential to stay informed and take necessary precautions under the sun. To learn more about the UV Index throughout the year in this beautiful destination, check out the Ixtapa-Zihuatanejo UV Index.

Maximum UV Index Levels in Ixtapa-Zihuatanejo for September

The chart shows the monthly maximum UV Index (UVI) for Ixtapa-Zihuatanejo 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.
JanFebMarAprMayJunJulAugSepOctNovDec911131313141312131198
Data source: Ixtapa-Zihuatanejo 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 Ixtapa-Zihuatanejo

As summer transitions into fall, September in Ixtapa-Zihuatanejo offers a warm escape with an impressive 267 hours of sunshine—a beautiful prelude to the upcoming cooler months. While this figure shows a slight dip from the vibrant summer months, it remains consistent with the overall trend of bright, sunny days that characterize the region. Following the peak light of May and June, September's ample hours of sunshine still promise opportunities for beach days and sunset strolls. As the year progresses, the sunlight begins to gently wane, yet this time of year still captures the essence of Mexico’s coastal charm, inviting visitors to bask in its remaining warmth.

Monthly Sunshine Duration in Ixtapa-Zihuatanejo: September Highlighted

The September sunshine duration represents the total number of hours Ixtapa-Zihuatanejo 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.
JanFebMarAprMayJunJulAugSepOctNovDec241h278h318h323h335h285h308h273h267h274h283h294h
Data source: Ixtapa-Zihuatanejo September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ixtapa-Zihuatanejo During September

As September rolls into Ixtapa-Zihuatanejo, visitors should brace for notably unreliable sunny weather, with a mere 12% chance of sunshine. This significant drop follows the vibrant summer months, where July and August also experience low sun exposure at just 17% and 13% respectively. In stark contrast, the earlier months of the year shine brightly, most notably February and March, where there's an impressive 84% and 83% likelihood of sunshine. As the region transitions from the sweltering summer heat to the more temperate fall, sunshine seekers might want to plan their activities around the more favorable weather patterns found in the earlier and later months like January and October, which showcase chances of sun at 62% and 30% respectively.

Percentage of Sunny Days in September in Ixtapa-Zihuatanejo

The chart illustrates the percentage of sunny days in Ixtapa-Zihuatanejo 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 Ixtapa-Zihuatanejo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%84%83%82%62%11%17%13%12%30%59%77%
Data source: Ixtapa-Zihuatanejo September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ixtapa-Zihuatanejo in September

In Ixtapa-Zihuatanejo, September basks in approximately 12 hours of daylight, aligning with the longer days of the spring and summer months. Following a gradual increase from 11 hours in January and February, daylight stretches to 12 hours by March, April, May, and again in August, before settling into a brief period of shorter days in October. This trend highlights the region's abundant sunshine during the warmer months, providing an ideal backdrop for beachgoers and outdoor enthusiasts. As the season shifts, daylight begins to wane, hinting at the arrival of the cooler months ahead while still offering ample opportunities to soak up the sun.

Average Daylight Hours in Ixtapa-Zihuatanejo for September

The chart illustrates the variation in daylight duration in Ixtapa-Zihuatanejo throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 11m11h 33m12h 3m12h 32m12h 57m13h 9m13h 2m12h 40m12h 12m11h 42m11h 17m11h 4m
Data source: Ixtapa-Zihuatanejo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ixtapa-Zihuatanejo

As September rolls into Ixtapa-Zihuatanejo, the coastal winds tend to soften, with average speeds dropping to 1.4 m/s (3 mph), mirroring the gentle breezes of both July and November. This month falls within a calmer phase, following a string of relatively consistent wind speeds from January through August, where values hovered around 1.7 to 1.8 m/s (4 mph). The transition to milder winds not only enhances the appeal for beachgoers seeking a tranquil retreat but also marks a natural shift towards the quieter days of fall. Overall, September embodies a serene blend of warmth and gentle airflow, perfect for savoring the beauty of this enchanting Mexican coastline.

Average September Wind Speed in Ixtapa-Zihuatanejo

The chart displays monthly wind speed patterns in Ixtapa-Zihuatanejo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.71.71.81.81.81.41.71.4 m/s1.51.41.4
Data source: Ixtapa-Zihuatanejo September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ixtapa-Zihuatanejo Compares to Other Months

The weather in Ixtapa-Zihuatanejo 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 Ixtapa-Zihuatanejo and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average temperature of 26°C (78°F). This month is also characterized by high humidity at 78% and significant rainfall, totaling 304 mm (12.0 in) over 24 days. In stark contrast, January experiences milder conditions, with temperatures dipping to a minimum of 16°C (60°F) and averaging 23°C (75°F), while max temperatures can still reach 32°C (90°F). Additionally, January boasts a dry climate with virtually no precipitation (only 3 mm or 0.1 in) and only 0 rainy days, along with lower humidity at 66%. For a closer look at January weather in this region, check out Ixtapa-Zihuatanejo weather in January.

September and February present contrasting weather conditions. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 26°C (78°F). This month is also characterized by significant rainfall, receiving 304 mm (12.0 in) across 24 days, while humidity remains high at 78%. In contrast, February experiences milder temperatures, peaking at 31°C (88°F) but starting at a cooler minimum of 13°C (57°F) and averaging 23°C (74°F). Notably, February is much drier, with only 4 mm (0.1 in) of precipitation recorded over 0 days, and lower humidity at 64%. For a detailed look at the February climate, you can check Ixtapa-Zihuatanejo weather in February.

In September, the weather is notably warmer and more humid, with average temperatures around 26°C (78°F) and frequent rainfall, totaling 304 mm (12.0 in) over 24 days. The humidity levels are relatively high at 78%, making the air feel quite muggy. In contrast, March offers a more pleasant climate with lower temperatures, averaging 24°C (76°F) and no rainfall, leading to dry conditions for the entire month. The humidity drops to 63% in March, providing a comfortable atmosphere for outdoor activities. For more details on March weather, check out Ixtapa-Zihuatanejo weather in March.

In September, the weather is warmer and more humid, with average temperatures ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), alongside significant precipitation of 304 mm (12.0 in) over 24 days. This contributes to a high humidity level of 78%, making the air feel quite heavy. In contrast, April enjoys milder and drier conditions, with temperatures between 16°C (61°F) and 33°C (92°F), but notably, it receives no rainfall and has lower humidity at 69%. For a detailed overview of the climate during this month, you can check out Ixtapa-Zihuatanejo weather in April.

When comparing the weather in September and May, noticeable differences emerge. September has a warmer average temperature, ranging from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), whereas May showcases slightly cooler conditions with temperatures ranging from 18°C (64°F) to 33°C (91°F). Additionally, September experiences significantly higher precipitation, averaging 304 mm (12.0 in) over 24 rainy days, in stark contrast to May’s minimal rainfall of just 12 mm (0.5 in) occurring on only 1 day. Humidity levels are also higher in September at 78%, compared to 73% in May. For more details on May's climate, you can visit Ixtapa-Zihuatanejo weather in May.

In comparing the weather patterns of September and June, both months feature similar average temperatures around 26°C (79°F). However, September tends to be slightly warmer with maximum temperatures reaching up to 32°C (90°F), compared to June's peak of 33°C (92°F). Notably, September brings a significant amount of rainfall, averaging 304 mm (12.0 in) over 24 days, while June is drier with 251 mm (9.9 in) over 18 days. Humidity levels are comparable, with September at 78% and June at 76%. For more detailed information, check out Ixtapa-Zihuatanejo weather in June.

In comparing the weather of September and July, both months share similar temperature ranges, with minimums around 22°C (72°F), average temperatures of 26°C (78°F), and maximums reaching 32°C (90°F). However, September experiences significantly higher precipitation, with 304 mm (12.0 in) falling over 24 days compared to July's 115 mm (4.5 in) over 20 days. Despite having the same humidity level of 78%, September's increased rainfall contributes to a markedly more humid atmosphere. For more detailed information, you can explore Ixtapa-Zihuatanejo weather in July.

In September, temperatures remain relatively consistent with those in August, with a minimum of 22°C (72°F) and an average of 26°C (78°F). However, September sees a slight decrease in the maximum temperature, reaching 32°C (90°F) compared to August's peak of 33°C (92°F). Precipitation also increases significantly in September, with 304 mm (12.0 in) over 24 days, representing a wetter month than August, which experienced 255 mm (10.0 in) of rain over 23 days. Humidity levels are quite similar, hovering around 78% in September and 79% in August. For more detailed insights on weather patterns, check out Ixtapa-Zihuatanejo weather in August.

September and October exhibit similar temperature ranges, with September boasting a slightly warmer average temperature of 26°C (78°F) compared to October's 25°C (77°F). Both months experience maximum temperatures reaching around 32°C (90°F), but September tends to be more humid at 78%, while October sees a slight decrease in humidity to 75%. Precipitation is a notable factor as well, with September receiving 304 mm (12.0 in) over 24 days, compared to October's 278 mm (10.9 in) across 26 days. For a detailed look at October weather, you can visit Ixtapa-Zihuatanejo weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a minimum of 22°C (72°F) to a maximum of 32°C (90°F), with an average of 26°C (78°F). This month experiences significant rainfall, with 304 mm (12.0 in) across 24 days, resulting in increased humidity levels at 78%. In contrast, November sees a slight drop in temperatures, with a minimum of 17°C (63°F) and an average of 25°C (77°F), while still reaching up to 32°C (90°F). Rainfall decreases to 47 mm (1.9 in) over just 9 days, and humidity levels lower to 72%. For more details, you can check Ixtapa-Zihuatanejo weather in November.

In September, the weather is characterized by warmer temperatures, with minimums around 22°C (72°F) and maximums reaching up to 32°C (90°F), resulting in an average of 26°C (78°F). This month also sees significant rainfall, with 304 mm (12.0 in) spread over 24 days, contributing to a high humidity level of 78%. In contrast, December offers a more temperate climate, with minimums dropping to 16°C (61°F) and maintaining a similar maximum of 32°C (89°F). The average temperature in December is milder at 24°C (75°F), with a drastic reduction in precipitation to just 6 mm (0.2 in) over 1 day, and lower humidity at 70%. For more detailed insights, check out Ixtapa-Zihuatanejo weather in December.

Compare Ixtapa-Zihuatanejo's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ixtapa-Zihuatanejo

As September arrives in Ixtapa-Zihuatanejo, the region welcomes its rainy season, characterized by significantly increased precipitation and humidity compared to other months. With warmth still dominating the days, temperatures maintain a tropical feel, yet the frequent showers and higher humidity can create a vibrant, lush atmosphere. This unique blend of warmth and moisture sets September apart, offering an experience that's distinctly different from the drier, sunnier months that precede it. For a deeper understanding of what to expect throughout the year, check out the comprehensive details on the Ixtapa-Zihuatanejo Climate.