September Weather in San Felipe, Mexico

Last updated: April 22, 2025

In September, San Felipe, Mexico experiences warm temperatures with a maximum reaching 35°C (96°F) and an average of 26°C (79°F), while the minimum dips to a balmy 20°C (68°F). This month is characterized by significant rainfall, with total precipitation measuring 463 mm (18.2 in) over 27 days, resulting in a humid atmosphere with an average humidity level of 84%. Visitors should prepare for frequent showers while enjoying the tropical warmth that defines this coastal gem during early fall.

September Temperature in San Felipe

In September, San Felipe, Mexico, experiences a delightful transition as temperatures start to cool slightly from the peak summer months. With minimum temperatures hovering around 20°C (68°F), visitors can enjoy milder mornings and evenings. The average temperature remains steady at 26°C (79°F), providing a comfortable climate ideal for outdoor activities. Despite a slight drop from the sweltering highs of August, the maximum temperature reaches up to 35°C (96°F), ensuring warm days for sun seekers. This month captures the essence of late summer, where warm days and cooler nights create the perfect backdrop for enjoying San Felipe's beautiful coastal scenery.

September Weather in San Felipe: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Felipe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec697275798280797979777270
Data source: Temperature data for San Felipe 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 San Felipe

September in San Felipe, Mexico, marks the peak of the rainy season, delivering a staggering 463 mm (18.2 in) of precipitation across 27 days. This substantial rainfall represents a striking increase compared to the preceding months, illustrating a trend of escalating moisture that begins in late summer and culminates in September. The month's downpours are vital for the local ecosystem, replenishing water sources and nurturing the region's diverse flora. As the monsoon season wanes, San Felipe transitions into a cooler, drier October, making September an essential month for both nature and the community, as sustained rainfall fosters growth and vitality before the dry months ahead.

September Precipitation Trends in San Felipe

The chart displays monthly precipitation patterns in San Felipe, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8076556012839623634546331417671
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Felipe

In September, San Felipe, Mexico, experiences a notable peak in humidity, reaching 84%, which mirrors the levels seen in January and August. This seasonal uptick suggests a shift towards more moisture-laden air as the summer winds down, creating a muggy atmosphere that's typical for this coastal region. Following the slight decline in humidity from April to July, the late summer and early fall months indicate a trend of increased humidity, ultimately leading into the cooler, more humid months of October through December. Overall, September serves as a transitional month, bridging the warm summer with the cooler, wetter winter, and reinforcing the lush, vibrant climate that characterizes San Felipe.

September Average Humidity in San Felipe

This chart illustrates the average monthly humidity levels in San Felipe, 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 San Felipe

In September, San Felipe, Mexico experiences an extreme UV Index of 13, maintaining the high exposure levels seen throughout the summer months. With a burn time of just 10 minutes, it’s crucial for sun-seekers to be vigilant about sun protection, as similar conditions prevailed from May through August. This trend of elevated UV levels underscores the region's strong sun intensity, making it essential to prioritize skin safety during your outdoor activities. As the year progresses into October, the UV Index slightly decreases to 12, but the potential for sun damage remains high. For more detailed information on UV levels year-round, visit San Felipe UV Index.

Maximum UV Index Levels in San Felipe for September

The chart shows the monthly maximum UV Index (UVI) for San Felipe 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.
JanFebMarAprMayJunJulAugSepOctNovDec9121313141414131312108
Data source: San Felipe 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 San Felipe

September in San Felipe, Mexico, offers a delightful blend of warmth and sunshine, marking the transition from the peak summer months to the beginning of fall. With 281 hours of sunlight, the month maintains a vibrant glow, slightly dipping from the bustling summer highs of 318 hours in July and 305 hours in August. This gradual decrease hints at the approach of autumn, yet still showcases the region's enduring appeal for sun-seekers. April and May stand out as the sunniest months of the year, but September's ample sunshine ensures that outdoor activities remain enjoyable. As the days slowly shorten, visitors can savor the lingering warmth and picturesque sunsets unique to this coastal paradise.

Monthly Sunshine Duration in San Felipe: September Highlighted

The September sunshine duration represents the total number of hours San Felipe 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.
JanFebMarAprMayJunJulAugSepOctNovDec195h249h299h306h320h278h318h305h281h271h257h265h
Data source: San Felipe September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Felipe During September

In San Felipe, Mexico, the likelihood of sunny weather in September dips significantly to just 16%, marking one of the cloudier months of the year. This trend is part of a broader pattern where summer months, particularly June through August, reveal a decreasing chance of sunshine, with September continuing this decline. As the year progresses, the odds of clear skies begin to improve again in October, rising to 28%, and further enhancing as winter approaches. Therefore, if you're dreaming of sun-soaked days in September, it may be wise to reconsider your plans and perhaps look forward to the sunnier conditions that set in later in the fall.

Percentage of Sunny Days in September in San Felipe

The chart illustrates the percentage of sunny days in San Felipe 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 San Felipe experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%48%59%50%39%11%29%26%16%29%44%65%
Data source: San Felipe September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Felipe in September

In San Felipe, Mexico, September marks a delightful transition in daylight duration, offering approximately 12 hours of sunlight. This month maintains the same light levels as the summer months of June and July, highlighting a peak that begins to taper off as fall approaches. Following the vibrant, sun-soaked summer, September is characterized by a gradual shift toward shorter days, as the sunlight begins to recede toward the 11 hours found in October. This steady rhythm of daylight throughout the year enriches the coastal allure of San Felipe, making each moment basking in the sun more precious before the cooler months set in.

Average Daylight Hours in San Felipe for September

The chart illustrates the variation in daylight duration in San Felipe 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: San Felipe daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in San Felipe

As the summer heat begins to wane, September's winds in San Felipe, Mexico, offer a gentle reprieve with an average speed of 1.3 m/s (3 mph). This slight decline from the summer months reflects a trend of diminishing breezes as the year progresses. From a minor peak in late winter and early spring, when winds notably reach around 1.8 m/s (4 mph), the air becomes more tranquil by the time September arrives. Visitors can expect a calmer atmosphere, perfect for leisurely strolls along the waterfront, creating a serene backdrop to enjoy the transition from the sweltering summer to the refreshing autumn.

Average September Wind Speed in San Felipe

The chart displays monthly wind speed patterns in San Felipe, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.71.81.71.51.21.51.41.3 m/s1.51.61.4
Data source: San Felipe September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in San Felipe Compares to Other Months

The weather in San Felipe 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 San Felipe and find detailed weather information for every month.

The weather in September is notably warmer and wetter compared to January. With temperatures ranging from a minimum of 20°C (68°F) to a maximum of 35°C (96°F) and an average of 26°C (79°F), September experiences substantial rainfall, totaling 463 mm (18.2 in) over 27 days. In contrast, January presents a cooler climate, with temperatures dipping to a minimum of 10°C (50°F) and peaking at 33°C (91°F), averaging 21°C (69°F). Precipitation is significantly lower in January at 80 mm (3.1 in) over just 11 days, while humidity remains constant at 84%. For a more detailed look at January weather, you can visit San Felipe weather in January.

September and February present contrasting weather patterns. In September, the temperatures range from a minimum of 20°C (68°F) to a maximum of 35°C (96°F), with an average of 26°C (79°F). This month is characterized by high humidity at 84% and significant rainfall, accumulating 463 mm (18.2 in) over 27 days, making it one of the wettest months. In contrast, February experiences cooler temperatures, with a minimum of 9°C (49°F) and an average of 22°C (72°F), while still reaching highs of 35°C (96°F). The precipitation is notably lower at 76 mm (3.0 in) over just 10 days, accompanied by a slightly lower humidity of 80%. For a deeper insight into February weather specifics, you can check San Felipe weather in February.

In comparing the weather between September and March, notable differences emerge. September tends to be much warmer, with average temperatures around 26°C (79°F) and highs reaching up to 35°C (96°F), while March experiences milder conditions, averaging 24°C (75°F) and peaking at 37°C (98°F). However, September is also characterized by significantly higher rainfall, with 463 mm (18.2 in) of precipitation over 27 days, compared to March's comparatively dry profile of 55 mm (2.2 in) across just 9 days. Additionally, humidity levels in September average 84%, making it noticeably more humid than March's 73%. For more detailed information, you can check out San Felipe weather in March.

In comparing September and April weather, we see some notable differences. September experiences higher humidity at 84% and significantly more precipitation, with 463 mm spread over 27 days, creating a wet atmosphere. In contrast, April boasts a lower humidity of 67% and minimal precipitation of only 60 mm over 9 days, leading to generally drier conditions. While both months have the same average temperature of 26°C (79°F), September's maximum temperature can reach up to 35°C (96°F), whereas April can soar to a scorching 40°C (104°F). For more detailed information, you can check San Felipe 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 20°C (68°F) to a maximum of 35°C (96°F). In contrast, May showcases warmer conditions, with temperatures reaching up to 39°C (103°F). However, September is significantly wetter, receiving 463 mm (18.2 in) of precipitation over 27 days, while May experiences much less rainfall at 128 mm (5.0 in) across 17 days. Furthermore, September has a higher humidity level at 84%, compared to May's 72%, which can make the warmer days feel more uncomfortable. For more detailed information, you can check San Felipe weather in May.

September and June share similar temperature ranges, with minimums around 20°C (68°F) and average highs of approximately 26-36°C (79-97°F). However, September experiences more rainfall, totaling 463 mm (18.2 in) over 27 days, compared to June's 396 mm (15.6 in) during the same number of days. Additionally, the humidity in September is notably higher at 84%, while June maintains a more comfortable 73%. For more details on June weather in this region, visit San Felipe weather in June.

When comparing the weather between September and July, both months exhibit similar average temperatures, hovering around 26°C (79°F). However, September tends to be slightly warmer with maximum temperatures reaching 35°C (96°F) compared to July's 34°C (93°F). One notable difference is the substantial increase in precipitation during September, which sees 463 mm (18.2 in) over 27 days, in stark contrast to July's 236 mm (9.3 in) over 26 days. Additionally, September has higher humidity levels at 84%, while July maintains a more comfortable 76%. For a detailed view of July's climate, you can refer to this link: San Felipe weather in July.

Comparing the weather in September and August, both months share a similar temperature range with minimums around 20°C (68°F) and average highs hovering between 26°C (79°F) and 35°C (96°F) in September, slightly raising from August's peak of 34°C (93°F). However, September experiences significantly higher precipitation, totaling 463 mm (18.2 in) over 27 days, compared to August’s 345 mm (13.6 in) with the same number of rainy days. Additionally, the humidity is slightly higher in September at 84%, compared to 80% in August, which contributes to a more humid feel during the transition into fall. For a closer look at the August weather patterns, check out San Felipe weather in August.

In September, temperatures in San Felipe are noticeably warmer, with a minimum of 20°C (68°F) and an average high reaching 35°C (96°F). The month sees substantial rainfall, accumulating to 463 mm (18.2 in) over 27 days, alongside significant humidity at 84%.

In contrast, October brings slightly cooler weather, with minimum temperatures dipping to 17°C (63°F) and average highs around 34°C (94°F). The rainfall is also reduced, totaling 314 mm (12.4 in) over 23 days, while humidity rises a bit to 89%. For more detailed information, you can check San Felipe weather in October.

September and November weather show a noticeable transition as the seasons change. In September, temperatures range from a minimum of 20°C (68°F) to a maximum of 35°C (96°F), with an average of 26°C (79°F). This month is marked by high precipitation, totaling 463 mm (18.2 in) over 27 days, and humidity levels remain high at 84%. In contrast, November experiences cooler temperatures, with a minimum of 12°C (53°F), a maximum of 33°C (91°F), and an average of 22°C (73°F). Precipitation decreases significantly to 176 mm (6.9 in) over just 14 days, while humidity rises slightly to 88%. For more detailed information on weather conditions, you can check San Felipe weather in November.

In September, the weather is characterized by warm temperatures, with a minimum of 20°C (68°F) and an average of 26°C (79°F), peaking at a sweltering 35°C (96°F). This month also sees significant rainfall, accumulating to 463 mm (18.2 in) over 27 days, along with high humidity levels averaging 84%. In contrast, December brings a much cooler climate, with temperatures ranging from a low of 10°C (51°F) to a pleasant average of 21°C (70°F), and a maximum of 32°C (90°F). Rainfall significantly decreases to 71 mm (2.8 in) spread over just 10 days, while humidity rises slightly to 88%. For those interested in more details, you can explore the San Felipe weather in December.

Compare San Felipe's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in San Felipe

September in San Felipe marks a transition to the height of the rainy season, characterized by higher humidity levels and frequent precipitation, making it markedly different from the drier months. The temperatures are generally warm, with an average that invites visitors to enjoy the tropical atmosphere, albeit with a notable chance of rain on nearly every other day. This combination of warmth and moisture creates a lush, vibrant landscape, perfect for those who appreciate the beauty of nature in bloom. For a deeper dive into what to expect throughout the year, visit San Felipe Climate.