September Weather in Sayulilla, Mexico

Last updated: April 22, 2025

Experience the vibrant climate of Sayulilla, Mexico in September, where maximum temperatures can soar to 34°C (94°F) while the average remains a pleasant 28°C (82°F). Although the month welcomes the warm sun, it also brings a significant precipitation total of 287 mm (11.3 in), spread across 24 days of rain, resulting in a humidity level of 83%. This unique blend of warmth and moisture creates a lush, verdant landscape, making September a captivating time to explore the natural beauty and vibrant culture of Sayulilla.

September Temperature in Sayulilla

In September, Sayulita, Mexico, experiences a warm embrace of tropical weather, with temperatures showcasing a comfortable range. The month kicks off with minimums around 22°C (73°F) and peaks at 34°C (94°F), making it one of the warmest times of the year. This pattern is consistent with the transitional sun-soaked summer months, as average temperatures hover around 28°C (82°F). While the evenings may invite a gentle breeze, the daytime heat is perfect for beachgoers and surfers looking to soak in Sayulita's famous waves. As the month progresses, the temperatures begin to dip slightly, hinting at the cooler autumn months ahead, but September remains a vibrant time, filled with sunshine and the lively spirit of this coastal paradise.

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

The chart illustrates September temperature patterns in Sayulilla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec697173757983848382817671
Data source: Temperature data for Sayulilla 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 Sayulilla

In September, Sayulita experiences a dramatic peak in precipitation, receiving 287 mm (11.3 in) of rain over 24 days. This substantial rainfall follows August's already impressive total of 297 mm (11.7 in), showcasing the region's wettest months as they transition from summer to fall. The trend of increasing precipitation from the dry months of early spring to late summer highlights the tropical climate's influence, where the rainy season truly dominates the landscape. As the ocean breezes and humidity build, these downpours nourish the lush surroundings, creating a vibrant environment that contrasts sharply with the dry early months of the year. With such consistent rainfall, September not only underscores the heart of the rainy season but also signals a time of rejuvenation for both nature and the local community.

September Precipitation Trends in Sayulilla

The chart displays monthly precipitation patterns in Sayulilla, 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.
JanFebMarAprMayJunJulAugSepOctNovDec131500057150297287136911
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sayulilla

In September, Sayulita, Mexico, experiences a peak in humidity, reaching a notable 83%. This trend reflects the culmination of a humid season that begins in the summer months; following a steady rise from 61% in March, humidity levels soar in July and August, creating a tropical atmosphere. The transition into fall shows a slight dip in October, bringing humidity down to 78%, yet September remains a time when the air feels heavy and rich, enhancing the lush landscapes of this coastal paradise. As the year progresses, this pattern of fluctuating humidity invites visitors to experience the vibrant environment that thrives under such tropical conditions.

September Average Humidity in Sayulilla

This chart illustrates the average monthly humidity levels in Sayulilla, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sayulilla

In September, Sayulilla, Mexico experiences a UV Index of 12, categorizing it within the extreme exposure level. This indicates that sun protection measures are crucial, as the burn time is a mere 10 minutes. Leading up to September, the UV Index has consistently remained high, with monthly readings of 12 during the summer and dropping slightly in October to 11, but still signaling a high level of sun exposure. This trend highlights the importance of being UV-aware throughout the late summer and early fall. Preparing for outdoor activities by applying sunscreen, wearing protective clothing, and seeking shade can help safeguard against sunburns during this time. For more details, visit Sayulilla UV Index.

Maximum UV Index Levels in Sayulilla for September

The chart shows the monthly maximum UV Index (UVI) for Sayulilla 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.
JanFebMarAprMayJunJulAugSepOctNovDec710111313121212121186
Data source: Sayulilla 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 Sayulilla

September in Sayulita, Mexico, offers a delightful embrace of sunshine, with 266 hours of radiant daylight gracing the beaches and vibrant streets. As summer winds down, the hours of sunshine slightly decline from the peak of 354 hours in May, yet the warmth remains inviting. The trend showcases a gradual decrease through the early fall months, dropping from July's 311 hours to August's 281 hours, before settling in September. Despite this dip, the sun continues to illuminate the lush surroundings, creating a perfect backdrop for relaxation and exploration, proving that the charm of autumn in Sayulita is every bit as captivating as the summer splendor.

Monthly Sunshine Duration in Sayulilla: September Highlighted

The September sunshine duration represents the total number of hours Sayulilla 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.
JanFebMarAprMayJunJulAugSepOctNovDec224h262h317h328h354h316h311h281h266h277h279h273h
Data source: Sayulilla September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sayulilla During September

As summer fades, September in Sayulita, Mexico, tends to embrace a more temperate climate, with a 31% chance of sunny weather. This marks a shift from the stark decline in sunshine seen during the peak months of July and August, which plummet to 26% and 18% respectively. However, September still lags behind the spring and early summer months, where delightful sunshine is more abundant, peaking at 83% in May. As autumn approaches, those seeking bright days should keep in mind that while sunny moments may be fewer, the vibrant atmosphere of Sayulita still offers plenty of charm, making it a worthwhile destination even in this transitional month.

Percentage of Sunny Days in September in Sayulilla

The chart illustrates the percentage of sunny days in Sayulilla 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 Sayulilla experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%69%68%69%83%40%26%18%31%56%61%60%
Data source: Sayulilla September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sayulilla in September

In Sayulilla, Mexico, September brings a delightful glow with 12 hours of daylight, continuing a trend of abundant sunshine that peaked in May through July with 13 hours. As the summer wanes, the daylight duration begins to gently taper off, mirroring the transition from the vibrant heat of summer to the milder embrace of autumn. This balance of light allows for plenty of time to enjoy the area's stunning natural beauty, making September an ideal month for outdoor adventures and relaxation. As the days grow shorter, the gradual descent from the summer's brilliance sets the stage for the enchanting fall season that follows.

Average Daylight Hours in Sayulilla for September

The chart illustrates the variation in daylight duration in Sayulilla throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 55m11h 24m12h 1m12h 40m13h 12m13h 28m13h 19m12h 51m12h 14m11h 35m11h 2m10h 46m
Data source: Sayulilla daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sayulilla

In September, the winds in Sayulita, Mexico, begin to show a gentle decline, averaging just 1.2 m/s (3 mph). This slight decrease continues a trend observed throughout the summer months, with July and August recording similar calmness. However, what stands out is the overall increase in wind speed that characterizes the early months of the year, peaking in May at 1.8 m/s (4 mph). As the year progresses into the cooler months, from October through December, the wind speed stabilizes around 1.3 to 1.4 m/s (3 mph), bringing a sense of tranquility to the coastal town. This ebb and flow of wind not only enhances Sayulita's warm climate but also makes it a perfect retreat for those seeking both relaxation and adventure.

Average September Wind Speed in Sayulilla

The chart displays monthly wind speed patterns in Sayulilla, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.61.61.71.81.61.31.41.2 m/s1.31.41.4
Data source: Sayulilla September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sayulilla Compares to Other Months

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

September and January present quite contrasting weather conditions. In September, temperatures range from a warm minimum of 22°C (73°F) to a scorching maximum of 34°C (94°F), with an average of 28°C (82°F). This month is also characterized by high humidity at 83% and substantial rainfall, with 287 mm (11.3 in) expected over 24 days. In stark contrast, January offers cooler temperatures, starting at a low of 5°C (41°F) and peaking at a comfortable 33°C (92°F), with an average of 21°C (70°F). Notably, January experiences minimal precipitation of only 13 mm (0.5 in) and no rainy days, accompanied by a slightly lower humidity level of 74%. For more on the January climate, visit Sayulilla weather in January.

September and February showcase stark contrasts in weather. September, characterized by high temperatures ranging from a minimum of 22°C (73°F) to a maximum of 34°C (94°F), also brings significant rainfall, with 287 mm (11.3 in) of precipitation over 24 days and humidity levels soaring to 83%. In contrast, February offers a cooler climate, with temperatures varying from a minimum of 9°C (49°F) to a maximum of 35°C (95°F) and a much drier environment, featuring only 15 mm (0.6 in) of rain across just one day and lower humidity at 66%. For more details on February weather, visit Sayulilla weather in February.

In comparing the weather between September and March, we observe significant differences in temperature and precipitation. September boasts much warmer temperatures, with a minimum of 22°C (73°F) and an average of 28°C (82°F), reaching highs of 34°C (94°F). However, this month also experiences substantial rainfall, accumulating 287 mm (11.3 in) over 24 days, contributing to a high humidity of 83%. In contrast, March presents a much cooler climate, starting at a minimum of 8°C (48°F) and averaging 23°C (73°F), with maximum temperatures peaking at 35°C (96°F). Notably, March is dry, with no recorded precipitation and humidity levels at a comfortable 61%. For a more detailed look at the weather during this time, you can check Sayulilla weather in March.

September and April present markedly different weather patterns. September tends to be much warmer, with average temperatures hovering around 28°C (82°F) and a maximum potential of up to 34°C (94°F). However, it is also quite humid, with a significant amount of rainfall totaling 287 mm (11.3 in) over 24 days. In contrast, April is cooler and more temperate, featuring average temperatures of 24°C (75°F) and a maximum of 35°C (96°F). Notably, April enjoys dry conditions, with no recorded precipitation, leading to low humidity levels of 56%. For more specific details about the weather in Sayulilla during April, you can refer to this link: Sayulilla weather in April.

In comparing the weather of September and May, notable differences emerge. September boasts higher temperatures, with average highs reaching 34°C (94°F) and a relatively high humidity of 83%. In contrast, May has a more moderate average of 26°C (79°F), with peaks of 37°C (99°F), but benefits from significantly lower humidity at 61%. Another striking distinction is in precipitation; September experiences substantial rainfall with 287 mm (11.3 in) over 24 days, while May remains completely dry with no recorded precipitation. For more detailed information, you can refer to this link: Sayulilla weather in May.

When comparing the weather in September and June, there are some notable differences. September typically experiences higher humidity at 83%, along with a minimum temperature of 22°C (73°F) and an average of 28°C (82°F), but it can feel quite wet due to substantial rainfall of 287 mm (11.3 in) over 24 days. In contrast, June is generally hotter, with a minimum of 18°C (64°F) and a maximum of 38°C (100°F), but significantly less precipitation—only 57 mm (2.3 in) over just 5 days—and lower humidity at 73%. For a more detailed look at the weather, you can check Sayulilla weather in June.

In comparison to July, September experiences slightly cooler temperatures, with an average of 28°C (82°F) compared to July's 29°C (85°F). Despite the minimal difference in averages, September can reach a maximum of 34°C (94°F), which is lower than July's peaks of 40°C (105°F). Additionally, September is significantly wetter, receiving 287 mm (11.3 in) of rainfall over 24 days, while July sees only 150 mm (5.9 in) over 16 days. Humidity levels are comparable, with September at 83% and July at 82%. For more insights into the specifics of July weather, you can visit Sayulilla weather in July.

In comparing the weather between August and September, both months display similar minimum and average temperatures, with September recording a minimum of 22°C (73°F) and an average of 28°C (82°F), which mirrors August's figures closely. However, September sees a notable decrease in maximum temperature, reaching only 34°C (94°F) compared to August's higher peak of 37°C (98°F). Precipitation levels are comparable, with September receiving 287 mm (11.3 in) over 24 days, slightly less than August’s 297 mm (11.7 in), but both months maintain a humidity level of 83%. For a more detailed look at August weather, check out Sayulilla weather in August.

In September, the weather is characterized by warm temperatures, with a minimum of 22°C (73°F), an average of 28°C (82°F), and a maximum of 34°C (94°F). This month also sees frequent rain, with a total precipitation of 287 mm (11.3 in) over 24 days and high humidity at 83%.

In contrast, October experiences slightly cooler temperatures, with a minimum of 18°C (65°F), an average of 27°C (81°F), and a maximum of 35°C (95°F). Rainfall significantly decreases to 136 mm (5.4 in) over only 12 days, and humidity drops to 78%.

Overall, October offers a more pleasant climate with less rainfall compared to September. For more details, you can check Sayulilla weather in October.

September and November weather exhibit stark contrasts, particularly in temperature and precipitation. September is characterized by warmer temperatures, with a minimum of 22°C (73°F) and an average of 28°C (82°F), peaking at 34°C (94°F). Additionally, this month experiences significant rainfall, totaling 287 mm (11.3 in) over 24 days, accompanied by high humidity at 83%. In contrast, November sees a notable drop in minimum temperatures to 12°C (55°F) and an average of 24°C (76°F), while still reaching a maximum of 35°C (96°F). Precipitation in November is minimal, with only 9 mm (0.4 in) recorded over just 1 day and lower humidity at 77%. This shift in weather highlights the transition from the rainy season in September to the drier conditions typical of November. For more details, check Sayulilla weather in November.

September and December exhibit striking differences in weather. In September, temperatures range from a minimum of 22°C (73°F) to a maximum of 34°C (94°F), with an average of 28°C (82°F). The month is characterized by significant rainfall, totaling 287 mm (11.3 in) over 24 days, and high humidity at 83%. In contrast, December presents a much cooler climate, with temperatures dipping to a minimum of 10°C (50°F) and averaging 22°C (71°F), reaching up to 33°C (91°F) at its peak. Remarkably, precipitation drops to just 11 mm (0.4 in) spread over zero days, and humidity decreases slightly to 78%. For more insights into December's climate, you can refer to Sayulilla weather in December.

Compare Sayulilla's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sayulilla

In September, Sayulilla experiences a distinct shift in weather, characterized by higher humidity and significant rainfall, making it one of the wettest months of the year. While daytime temperatures remain relatively warm, the increased precipitation introduces a refreshing contrast to the usual heat. Visitors should be prepared for occasional showers, which can create a lush, vibrant landscape, but can also impact outdoor plans. This month stands apart from others with its average humidity levels hovering around 83%, resulting in a unique tropical atmosphere. For more detailed insights into how Sayulilla's weather patterns unfold throughout the year, explore the Sayulilla Climate.