September Weather in Boca del Rio, Mexico

Last updated: April 22, 2025

In Boca del Rio, Mexico, September brings a warm and humid climate, with maximum temperatures reaching 34°C (93°F) and an average of 29°C (84°F). The month experiences a minimum temperature of 24°C (76°F), creating a balmy atmosphere for visitors. However, it is not just the heat that defines September; the region also faces significant rainfall, accumulating 155 mm (6.1 in) over approximately 17 rainy days. The humidity levels hover around 78%, adding to the tropical feel of the environment, making it essential for travelers to prepare for both sun and showers during their stay.

September Temperature in Boca del Rio

In Boca del Río, Mexico, September brings a marked shift towards warmth, with temperatures reaching a minimum of 24°C (76°F) and peaking at an impressive 34°C (93°F). The average temperature for the month settles comfortably at 29°C (84°F), making it one of the warmest times of the year. This increase in heat shows a consistent trend from the previous months, where July and August already showcased sweltering conditions with highs of 33°C (92°F) and 34°C (94°F), respectively. As fall approaches, the coastal climate remains lively, hinting at a vibrant atmosphere perfect for beach outings and festive activities. Enjoying the late summer heat, visitors and locals are sure to relish in the sunny days ahead!

September Weather in Boca del Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Boca del Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec666668727781858684827669
Data source: Temperature data for Boca del Rio 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 Boca del Rio

September marks a significant shift in the rainfall pattern for Boca del Rio, Mexico, with precipitation soaring to 155 mm (6.1 in) over 17 days. This impressive amount underscores the transition into the rainy season, following a gradual increase from the drier months prior. While August sets the stage with 100 mm (3.9 in) across 13 days, September not only amplifies the deluge but also establishes itself as the wettest month of the year, far surpassing the lighter showers of earlier months like April and May, which see almost no rain at all. The surge in precipitation in September is a stark reminder of the region's tropical climate, where the balance between dry and wet seasons shifts dramatically, bringing vitality to the landscape and creating an essential water supply for the months ahead.

September Precipitation Trends in Boca del Rio

The chart displays monthly precipitation patterns in Boca del Rio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec714210193410015625239
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Boca del Rio

In Boca del Rio, Mexico, September marks the peak of humidity, maintaining a high level of 78%, which is consistent with the sweltering heat of the preceding months. As summer reaches its finale, humidity levels begin their gradual decline from August's peak. Reflecting a broader trend, the region experiences a rise in humidity from the comparatively drier months of January through April, where levels dip to a refreshing 58%. This shift toward higher humidity persists through the summer, culminating in July and August, before leveling off in October. The fluctuating humidity not only plays a significant role in the local climate but also enhances the vibrant atmosphere, making September a time of warmth and tropical abundance.

September Average Humidity in Boca del Rio

This chart illustrates the average monthly humidity levels in Boca del Rio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec70%67%62%58%59%64%74%78%78%75%74%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Boca del Rio

In September, Boca del Rio, Mexico, maintains a highly intense UV Index of 12, categorizing it as extreme and enforcing a burn time of just 10 minutes. This trend of elevated UV levels peaks in the summer months from April to September, highlighting the need for sun protection during outdoor activities. With conditions remaining consistent through this period, residents and visitors alike should remain vigilant, ensuring they apply sunscreen and wear protective gear. As summer transitions into fall, October promises a noticeable decrease to an index of 10, indicating a slightly less severe but still significant sun exposure risk. For more detailed information on UV levels in the area, visit Boca del Rio UV Index.

Maximum UV Index Levels in Boca del Rio for September

The chart shows the monthly maximum UV Index (UVI) for Boca del Rio 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.
JanFebMarAprMayJunJulAugSepOctNovDec69101212121212121086
Data source: Boca del Rio 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 Boca del Rio

As summer transitions to fall, September in Boca del Rio, Mexico, offers a delightful blend of sunshine and warmth, boasting 284 hours of bright, golden rays. This month marks a slight dip from the peak of 360 hours in May, yet remains significantly sunnier than the months leading into winter. Following the vibrant summer months, September showcases a noticeable decrease in sunlight compared to the bustling high of 321 hours in April and 311 hours in August. Nonetheless, it still carves out a significant place in the sunny calendar, transitioning smoothly into the 300-hour October glow. With an average of well over 272 hours in the subsequent months, September serves as a brilliant prelude to the gentle fall ambiance, making it a perfect time for visitors to bask in the enchanting weather before the year winds down.

Monthly Sunshine Duration in Boca del Rio: September Highlighted

The September sunshine duration represents the total number of hours Boca del Rio 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.
JanFebMarAprMayJunJulAugSepOctNovDec220h253h302h321h360h345h334h311h284h300h272h265h
Data source: Boca del Rio September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Boca del Rio During September

In Boca del Rio, Mexico, the likelihood of sunny weather experiences noticeable fluctuations throughout the year. After the vibrant and sun-drenched days of May, which boasts an impressive 79% chance of sunshine, the summer months bring a gradual decline, with August dipping to just 32%. Fortunately, as September rolls in, the chances of sun bounce back to a moderate 54%, providing a pleasant reprieve as the month transitions into the more favorable autumn season. This brief resurgence in sunny days sets the stage for October, which enjoys a robust 77% likelihood of clear skies, marking it once again as an optimal time for outdoor activities and enjoying the natural beauty of the region. Overall, while September may not guarantee perfect weather, it certainly offers a decent mix of sunny moments for visitors and locals alike.

Percentage of Sunny Days in September in Boca del Rio

The chart illustrates the percentage of sunny days in Boca del Rio 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 Boca del Rio experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec69%60%60%63%79%63%51%33%54%77%64%57%
Data source: Boca del Rio September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Boca del Rio in September

In Boca del Rio, Mexico, September ushers in a pleasant transition, offering 12 hours of daylight—a slight reduction from the sun-soaked peaks of summer. Following the longest days in May through July, where daylight stretches to a generous 13 hours, the shift to fall sees a gradual tapering that continues into October. This month mirrors April, reflecting a harmonious balance of light as summer fades, yet retains enough daylight for outdoor activities. As autumn approaches, residents can still relish the lingering warmth and vibrant sunsets while preparing for shorter days ahead.

Average Daylight Hours in Boca del Rio for September

The chart illustrates the variation in daylight duration in Boca del Rio throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 44m11h 18m12h 1m12h 45m13h 22m13h 40m13h 30m12h 58m12h 15m11h 31m10h 53m10h 34m
Data source: Boca del Rio daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Boca del Rio

In Boca del Rio, Mexico, September brings a gentle shift in the breeze, with an average wind speed of just 2.8 m/s (6 mph), making it one of the calmest months of the year. This notable drop from the slightly stronger winds of the preceding summer months reflects a natural transition as the region moves from the peak heat towards a more temperate climate. The trend reveals that as summer recedes, the wind tends to soften, providing a serene atmosphere perfect for leisurely strolls along the coast or relaxing by the beach. October marks a slight uptick back to 3.2 m/s, suggesting that just as the summer retreats, the winds are poised to return, gently revitalizing the air in this beautiful coastal haven.

Average September Wind Speed in Boca del Rio

The chart displays monthly wind speed patterns in Boca del Rio, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.44.13.33.33.83.43.12.8 m/s3.23.23.7
Data source: Boca del Rio September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Boca del Rio Compares to Other Months

The weather in Boca del Rio 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 Boca del Rio and find detailed weather information for every month.

In September, the weather is significantly warmer and more humid, with minimum temperatures around 24°C (76°F) and an average of 29°C (84°F), peaking at 34°C (93°F). This month also sees considerable rainfall, with 155 mm (6.1 in) spread over 17 days, resulting in a humidity level of 78%. In contrast, January ushers in cooler temperatures, with a minimum of 12°C (54°F) and an average of 19°C (66°F), reaching a maximum of 26°C (79°F). The precipitation sharply decreases to just 7 mm (0.3 in) across only 1 day, and humidity falls to 70%. For more detailed insights, you can check out Boca del Rio weather in January.

In contrast to September, when temperatures typically range between a minimum of 24°C (76°F) and a maximum of 34°C (93°F) with an average of 29°C (84°F), February offers a significantly cooler climate, with temperatures ranging from 12°C (54°F) to 26°C (79°F) and an average of 19°C (66°F). Additionally, September experiences much higher rainfall, with 155 mm (6.1 in) over 17 days, while February sees only 14 mm (0.5 in) over just 2 days of precipitation. The humidity also differs, with September being more humid at 78% compared to February's 67%. For a detailed weather outlook, you can check Boca del Rio weather in February.

September and March present a stark contrast in weather conditions. In September, temperatures soar with a minimum of 24°C (76°F), averaging 29°C (84°F), and peaking at 34°C (93°F). This month also carries a significant amount of rainfall, with 155 mm (6.1 in) over 17 days, coupled with high humidity at 78%. In contrast, March boasts much milder temperatures, ranging from a cool 13°C (55°F) to a pleasant average of 20°C (68°F), reaching a maximum of 27°C (81°F). Additionally, March is notably dry, receiving just 2 mm (0.1 in) of precipitation over 0 days and experiencing lower humidity at 62%. For more details on March weather, you can check Boca del Rio weather in March.

September and April exhibit stark contrasts in weather conditions. September typically sees higher temperatures, with a minimum of 24°C (76°F) and an average of 29°C (84°F), peaking at 34°C (93°F). This month is also characterized by high humidity levels of 78% and considerable precipitation, averaging 155 mm (6.1 in) over 17 days. In contrast, April enjoys milder temperatures, ranging from a minimum of 16°C (61°F) to an average of 22°C (72°F) and a maximum of 27°C (81°F). This month boasts much drier conditions, with minimal precipitation of just 1 mm (0.0 in) and no rainy days, alongside a lower humidity level of 58%. For more insights on the weather in April, you can visit Boca del Rio weather in April.

September and May present distinct differences in weather patterns. In September, temperatures tend to range from a minimum of 24°C (76°F) to a maximum of 34°C (93°F), with an average temperature of 29°C (84°F). This month also experiences significant rainfall, totaling 155 mm (6.1 in) over 17 days, coupled with high humidity levels at 78%. In contrast, May is noticeably drier and milder, boasting a temperature range that starts at 19°C (67°F) and peaks at 31°C (88°F), with an average of 25°C (77°F). Remarkably, May records no precipitation, leading to a much lower humidity of 59%. For more information on the weather in May, you can refer to Boca del Rio weather in May.

When comparing the weather in September and June, September tends to be hotter and more humid. The minimum temperature in September averages at 24°C (76°F), with maximums reaching 34°C (93°F), while June's temperatures range from 22°C (73°F) to 32°C (90°F). Additionally, September sees significantly more rainfall, averaging 155 mm (6.1 in) over 17 days, compared to June’s minimal precipitation of only 19 mm (0.8 in) on just one day. The humidity is also higher in September at 78%, contrast to June's 64%. For a more detailed look at June weather specifics, you can visit Boca del Rio weather in June.

In comparing the weather between September and July, we observe that September has slightly cooler temperatures overall, with minimums at 24°C (76°F) compared to July’s 26°C (78°F). Both months share similar average temperatures, around 29°C (84°F in September and 85°F in July). However, July typically experiences less precipitation, with only 34 mm (1.3 in) falling over 6 days, while September brings significantly more rain, totaling 155 mm (6.1 in) over 17 days, contributing to a higher humidity level of 78% compared to July's 74%. For more detailed information on July weather in Boca del Rio, visit Boca del Rio weather in July.

In comparing the weather between September and August, we can see that September tends to be slightly cooler, with average temperatures of 29°C (84°F) compared to August's 30°C (86°F). However, both months share similar maximum temperatures, reaching up to 34°C (93°F in September and 94°F in August). Precipitation is notably higher in September, with 155 mm (6.1 in) spread over 17 days, whereas August sees only 100 mm (3.9 in) across 13 days. Both months share a humidity level of 78%, making them equally muggy. For more detailed weather data for August, you can check out Boca del Rio weather in August.

In September, the weather tends to be warmer and wetter, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 34°C (93°F) and an average of 29°C (84°F). This month also sees considerable rainfall, accumulating to 155 mm (6.1 in) over 17 days, coupled with a humidity level of 78%. In contrast, October offers a slight reprieve, characterized by lower minimum temperatures of 19°C (67°F) and a similar maximum temperature reaching up to 34°C (94°F). The average temperature drops slightly to 28°C (83°F), while precipitation significantly decreases to just 25 mm (1.0 in) over only 3 days, with humidity remaining relatively high at 75%. For more detailed weather information, check Boca del Rio weather in October.

September and November present notably different weather conditions. In September, temperatures are warmer, with a minimum of 24°C (76°F) and an average of 29°C (84°F), peaking at a high of 34°C (93°F). This month also sees significant precipitation, amounting to 155 mm (6.1 in) over 17 days, along with high humidity at 78%. In contrast, November brings cooler temperatures, ranging from a minimum of 17°C (63°F) to an average of 24°C (76°F) and a maximum of 31°C (89°F). Precipitation drops dramatically to just 23 mm (0.9 in), spread over only 2 days, and humidity is slightly lower at 74%. For a more detailed look at the weather during this time, check out Boca del Rio weather in November.

In September, temperatures are notably higher, with minimums around 24°C (76°F) and maximums reaching up to 34°C (93°F). The humidity is fairly high at 78%, and the month sees considerable rainfall, averaging 155 mm (6.1 in) over 17 days. In contrast, December presents a much cooler climate, with minimum temperatures dropping to 13°C (55°F) and averaging around 20°C (69°F). This month experiences significantly lower precipitation, with only 9 mm (0.4 in) over just 1 day and only slightly lower humidity at 72%. For a more detailed look at weather patterns during this month, check out Boca del Rio weather in December.

Compare Boca del Rio's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Boca del Rio

In September, Boca del Rio experiences a unique blend of warmth and moisture, setting it apart from other months. With average temperatures hovering around a comfortable 29°C (84°F), the heat can occasionally peak under the blazing sun, reminiscent of the summer's intensity. However, this month is also marked by increased rainfall, with significant precipitation occurring on more than half the days, leading to a notable rise in humidity levels. This combination creates a lush, tropical atmosphere that contrasts sharply with the drier, sunnier periods of the year. Despite the frequent showers, the vibrant landscapes and warm weather make September a fascinating time to explore the region. For a deeper understanding of year-round conditions, visit Boca del Rio Climate.