September Weather in Salina Cruz, Mexico

Last updated: April 22, 2025

In September, Salina Cruz, Mexico, experiences a tropical climate characterized by high humidity levels averaging 84%, making it feel quite warm. Temperatures peak at a scorching 37°C (99°F), while the average hovers around a comfortable 28°C (83°F), and nightly lows drop to a mild 23°C (74°F). This month also sees significant rainfall, with 184 mm (7.3 in) spread across 18 days, creating a lush backdrop against the vibrant coastal scenery. Visitors should prepare for both the heat and the rain, ensuring an unforgettable experience in this tropical paradise.

September Temperature in Salina Cruz

In September, Salina Cruz experiences a warm tropical climate, with temperatures maintaining a comfortable range. The month begins with minimal nightly lows around 23°C (74°F), rising to an average of 28°C (83°F) and peaking at 37°C (99°F) during the day. This pattern reflects a slight decrease in maximum temperatures compared to the summer months, yet the overall heat remains inviting. As the first hints of autumn approach, the weather remains ideal for beachgoers and outdoor enthusiasts alike, providing a perfect backdrop for unwinding in this vibrant coastal town.

September Weather in Salina Cruz: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Salina Cruz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec777981838582858483828078
Data source: Temperature data for Salina Cruz 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 Salina Cruz

In September, Salina Cruz experiences a significant uptick in precipitation, accumulating 184 mm (7.3 in) over 18 days, marking a continuation of the region's wet season that started mid-year. This surge follows a notably dry March and January, with minimal rainfall, highlighting a stark contrast to the heavy downpours of June, which recorded over 300 mm. The rainfall in September, while slightly less than the 178 mm (7.0 in) seen in August, maintains the trend of high moisture typical for this time of year. As the transition into the drier months begins, the elevated precipitation levels underscore the tail end of the rainy season in this coastal city, fostering a lush environment before the rain gives way to clearer skies in October.

September Precipitation Trends in Salina Cruz

The chart displays monthly precipitation patterns in Salina Cruz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3528773078117818411076
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Salina Cruz

September in Salina Cruz, Mexico, brings a notable uptick in humidity, reaching 84%. This increase reflects a broader trend observed throughout the year, where humidity levels fluctuate with the changing seasons. Following the humid summer months of July and August, September retains a noticeable stickiness reminiscent of the peak summer season. However, as autumn approaches, the humidity levels will only rise further, peaking in October at 89%. This cyclical pattern highlights the coastal climate's influence, where warmth and moisture intertwine to create a consistently humid atmosphere, especially as the year transitions toward its wetter months.

September Average Humidity in Salina Cruz

This chart illustrates the average monthly humidity levels in Salina Cruz, 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%80%73%67%72%73%76%80%84%89%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Salina Cruz

As September rolls into Salina Cruz, Mexico, residents and visitors can expect an extreme UV Index of 13, indicating the necessity for heightened sun safety measures. This trend of high UV levels extends from earlier months, reflecting a consistent pattern throughout the summer. With a burn time of just 10 minutes, it's crucial to protect your skin from the sun's harmful rays. Following September, the UV Index slightly decreases to 12 in October, but remains in the extreme category. To safely enjoy the radiant weather while minimizing risk, be sure to check the latest updates on the Salina Cruz UV Index.

Maximum UV Index Levels in Salina Cruz for September

The chart shows the monthly maximum UV Index (UVI) for Salina Cruz 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.
JanFebMarAprMayJunJulAugSepOctNovDec10121313141314131312109
Data source: Salina Cruz 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 Salina Cruz

September in Salina Cruz, Mexico, offers a delightful blend of warmth and sunshine, with the month basking in 290 hours of radiant daylight. As the summer months draw to a close, this figure reflects a slight dip from the peak of 328 hours in July, yet still comfortably exceeds the winter months, which consistently hover around 247 to 281 hours. This trend of abundant sunshine not only enhances the picturesque coastal landscape but also invites locals and travelers alike to savor the lingering warmth before autumn settles in. With October shortly ahead bringing 302 hours, September serves as a sweet transition, perfectly balancing the vibrancy of summer with the promise of the fall season.

Monthly Sunshine Duration in Salina Cruz: September Highlighted

The September sunshine duration represents the total number of hours Salina Cruz 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.
JanFebMarAprMayJunJulAugSepOctNovDec247h281h324h317h323h271h328h309h290h302h309h311h
Data source: Salina Cruz September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Salina Cruz During September

In September, Salina Cruz, Mexico, experiences a notable dip in sunny weather, with only a 17% chance of sunshine. This marks a significant decline from the preceding months of June, July, and August, which also struggle with low sun exposure, peaking at just 31% in July. As the summer gives way to the onset of fall, the likelihood of clear skies diminishes sharply, making September one of the cloudier months in the year. However, this trend of reduced sunshine isn’t permanent; as October rolls in, the chances improve to 48%, hinting at a brighter outlook ahead. Thus, those planning to visit Salina Cruz in September should prepare for overcast days as the region transitions into the fall season.

Percentage of Sunny Days in September in Salina Cruz

The chart illustrates the percentage of sunny days in Salina Cruz 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 Salina Cruz experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec64%84%83%63%40%14%31%23%17%48%75%87%
Data source: Salina Cruz September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Salina Cruz in September

In Salina Cruz, Mexico, the daylight duration experiences a subtle yet intriguing rhythm throughout the year. As January and February unfold, residents enjoy a steady 11 hours of daylight, creating a cozy atmosphere. However, as March arrives, daylight begins to stretch, reaching 12 hours by the month's end and continuing through April and May, welcoming the vibrant energy of spring. June marks a delightful peak, offering 13 hours of sunlight—a perfect blend for beachgoers and nature enthusiasts alike. As summer wanes, the daylight gradually recedes, with July and August returning to a comfortable 12 hours. By September, the trend stabilizes again, ensuring 12 hours of daylight, before heading back down to 11 hours in the cooler months of October through December. This gentle ebb and flow of daylight not only reflects the natural cycles of the region but also enhances the charm of living in this coastal paradise.

Average Daylight Hours in Salina Cruz for September

The chart illustrates the variation in daylight duration in Salina Cruz 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 52m13h 3m12h 57m12h 37m12h 11m11h 44m11h 21m11h 10m
Data source: Salina Cruz daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Salina Cruz

As September rolls into Salina Cruz, Mexico, the coastal winds begin to whisper a softer tune, with average speeds dipping to 2.5 m/s (6 mph). This decline continues a trend seen over the summer months, where winds have been notably calm, peaking at just 3.5 m/s (8 mph) in July and gradually decreasing through August. The gentle breezes of September mark a contrast to the stronger gusts experienced earlier in the year, particularly in January when winds reached 5.0 m/s (11 mph). As the month progresses, locals and visitors alike can enjoy the serene atmosphere that the reduced wind speed brings, setting a tranquil stage for the transition into the breezier months of October and November.

Average September Wind Speed in Salina Cruz

The chart displays monthly wind speed patterns in Salina Cruz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.04.34.73.93.61.83.52.62.5 m/s3.45.94.1
Data source: Salina Cruz September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Salina Cruz Compares to Other Months

The weather in Salina Cruz 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 Salina Cruz and find detailed weather information for every month.

September and January present a striking contrast in weather conditions. In September, temperatures range from a minimum of 23°C (74°F) to a scorching maximum of 37°C (99°F), with an average of 28°C (83°F). This month is also characterized by significant rainfall, receiving 184 mm (7.3 inches) spread over 18 days, contributing to high humidity levels of 84%. In contrast, January offers milder temperatures, with a minimum of 16°C (61°F), an average of 25°C (78°F), and a maximum of 35°C (95°F). Remarkably, January experiences minimal rainfall, accumulating just 2 mm (0.1 in) across the entire month, with no rainy days noted, while humidity remains consistent at 84%. For more details, visit Salina Cruz weather in January.

In comparing the weather conditions of September and February, September stands out as significantly warmer and wetter. With average temperatures reaching up to 28°C (83°F) and highs soaring to 37°C (99°F), it also experiences considerable rainfall, accumulating 184 mm (7.3 in) over 18 days, contributing to a high humidity level of 84%. In contrast, February offers a milder climate, with average temperatures around 26°C (79°F) and maximums of 36°C (97°F). Precipitation in February is minimal, totaling only 5 mm (0.2 in) across just 1 day, and humidity is slightly lower at 80%. For a closer look at February conditions, you can visit Salina Cruz weather in February.

In comparing the weather between September and March, we see distinct differences in temperature and precipitation. September experiences higher humidity and significantly more rainfall, with an average temperature of 28°C (83°F) and nearly 184 mm (7.3 in) of precipitation over 18 days. In contrast, March is notably drier, boasting minimal precipitation of just 1 mm (0.1 in) and an average temperature of 27°C (82°F), with lower humidity at 73%. Notably, both months share the same maximum temperature of 37°C (99°F), but March offers a more comfortable atmosphere for outdoor activities. For a detailed outlook on March weather, visit Salina Cruz weather in March.

September and April offer contrasting weather conditions. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F). This month is characterized by high humidity at 84% and significant precipitation, totaling 184 mm (7.3 in) over 18 days. In contrast, April showcases slightly lower minimum temperatures at 20°C (68°F) but peaks higher at 39°C (102°F), maintaining an average of 28°C (84°F). Notably, April experiences minimal rainfall, with only 8 mm (0.3 in) over just 2 days and lower humidity at 67%. For more details on April weather, visit Salina Cruz weather in April.

In comparing the weather of September and May, September tends to be slightly cooler, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), while May has a similar minimum of 21°C (71°F) but peaks at a higher maximum of 39°C (102°F). September experiences more rainfall, accumulating 184 mm (7.3 in) over 18 days, compared to May's 77 mm (3.0 in) over just 10 days, making September a wetter month overall. Additionally, September's humidity is higher at 84%, contrasting with May's lower humidity level of 72%. For more details on the specifics of May weather, you can visit Salina Cruz weather in May.

In comparing the weather between September and June, both months share similar average temperatures, hovering around 28°C (83°F). However, June tends to have slightly higher maximum temperatures, peaking at 38°C (100°F) compared to September's maximum of 37°C (99°F). Precipitation is significantly higher in June, with 307 mm (12.1 in) of rain over 20 days, while September experiences 184 mm (7.3 in) over 18 days. Additionally, September has a higher humidity level at 84%, compared to June's 73%. For more details on June weather specifics, check out Salina Cruz weather in June.

In comparing the weather between September and July, both months share a similar minimum temperature of 23°C (74°F), but July tends to be slightly warmer overall, with an average temperature of 29°C (85°F) compared to September's 28°C (83°F). July also experiences higher peak temperatures, reaching up to 38°C (101°F) versus September's maximum of 37°C (99°F). However, September is characterized by significantly increased rainfall, averaging 184 mm (7.3 in) over 18 days, while July sees less precipitation at 81 mm (3.2 in) across 12 days. Humidity levels are also higher in September at 84%, compared to 76% in July. For more detailed information, check out Salina Cruz weather in July.

In comparing the weather patterns of September and August, we find that both months experience similar minimum temperatures, with September at 23°C (74°F) and August at 23°C (73°F). However, August tends to be slightly warmer on average, reaching 29°C (84°F), while September averages at 28°C (83°F). The maximum temperatures also differ, with August peaking at a scorching 39°C (102°F) compared to September's high of 37°C (99°F). Additionally, September sees more precipitation, with 184 mm (7.3 in) over 18 rainy days, compared to August's 178 mm (7.0 in) over 16 days. Interestingly, humidity levels are higher in September at 84%, compared to 80% in August. For a detailed look at August weather, visit Salina Cruz weather in August.

In September, temperatures in Salina Cruz range from a minimum of 23°C (74°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F). The month is characterized by significant rainfall, totaling 184 mm (7.3 in) over 18 days, and humidity levels are quite high at 84%.

Conversely, October experiences slightly cooler temperatures, with a minimum of 21°C (71°F) and the same maximum of 37°C (100°F), averaging around 28°C (82°F). Precipitation decreases to 110 mm (4.3 in) over just 10 days, and humidity rises slightly to 89%. For more detailed insights into October weather, check out Salina Cruz weather in October.

In comparing the weather between September and November, September tends to be significantly warmer and wetter. With average temperatures reaching 28°C (83°F) and maximums soaring to 37°C (99°F), September experiences higher humidity levels at 84% and substantial rainfall of 184 mm (7.3 in) over 18 days. In contrast, November brings milder temperatures with a lower average of 27°C (81°F) and maximums of 36°C (97°F). Notably, November is much drier, receiving only 7 mm (0.3 in) of precipitation over just 1 day, though it maintains relatively high humidity at 88%. For more details about November weather, check out Salina Cruz weather in November.

In September, the weather is significantly warmer, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 37°C (99°F) and averaging around 28°C (83°F). This month is characterized by high humidity at 84% and considerable rainfall, totaling 184 mm (7.3 in) over 18 days. In contrast, December sees cooler temperatures, with lows of 16°C (61°F) and highs reaching 35°C (96°F), averaging 26°C (78°F). Notably, it experiences much less precipitation, only 6 mm (0.3 in) over a single day, while humidity remains relatively high at 88%. For more detailed information, you can check Salina Cruz weather in December.

Compare Salina Cruz's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Salina Cruz

As September rolls in, Salina Cruz experiences a notable shift in weather patterns. While the maximum temperatures may soar to a sweltering 37°C (99°F), the average overall warmth drops compared to the peak summer months, creating a more comfortable climate for outdoor activities. The increased humidity at 84% can feel intense, compounded by frequent rain, as the area sees around 184 mm (7.3 in) of precipitation over 18 days. This transition brings a refreshing change to the coastal landscape, enhancing its vibrant vegetation and inviting a lush ambiance. For a detailed exploration of what to expect throughout the year, check out Salina Cruz Climate.