Last updated: April 22, 2025
In September, Costa Azul, Mexico, experiences warm and humid weather, perfect for beachgoers seeking a tropical escape. With maximum temperatures reaching 32°C (90°F) and an average of 29°C (84°F), the days are balmy, while minimum temperatures hover around 25°C (78°F) at night. However, visitors should be prepared for significant rainfall, as the region sees about 154 mm (6.0 in) of precipitation across 17 days. The humidity levels are notably high at 78%, creating a rich, sultry atmosphere that characterizes this vibrant coastal destination.
In September, Costa Azul, Mexico, experiences warm and inviting temperatures that linger at minimums of 25°C (78°F) and soar to maximums of 32°C (90°F). The average temperature hovers around 29°C (84°F), setting the stage for pleasant beach days and vibrant sunset views. As the summer season begins to transition, September's warmth is a continuation of July and August’s heatwave but signals a slight easing as October approaches. This month is perfect for soaking in the sun or enjoying the cooler evenings, making it an ideal time for travelers seeking warmth and beauty in their getaway.
In September, Costa Azul experiences a notable surge in precipitation, with an impressive 154 mm (6.0 in) of rainfall over 17 days. This marks a significant increase from the preceding months, particularly after the heavy rains of August, which recorded 105 mm (4.1 in). The trend of escalating rainfall peaks during this month, as it transitions into the fall season, indicating the region’s susceptibility to moisture-laden systems. With precipitation becoming more frequent, it's clear that September serves as a pivotal month, bridging the hot summer season with the cooler, wetter months ahead. As a result, residents and visitors alike can expect a lush, vibrant landscape following this rainfall, showcasing the natural beauty of Costa Azul.
September marks a notable moment in Costa Azul, Mexico, as the humidity levels remain elevated at 78%, continuing the trend established in August. This late-summer peak aligns with the region's pattern of rising humidity throughout the warmer months, where it reaches its zenith after the more temperate spring. Following the mid-year spike, humidity shows a slight decline in October, dropping to 75%. Overall, the gradual decreasing trend from April's low of 58% builds up through the months, peaking in the height of summer and early fall, only to gradually taper off as the year transitions into the cooler, dryer winter months ahead.
In September, Costa Azul experiences consistently extreme UV Index levels, maintaining a high reading of 12, which means that outdoor exposure without proper protection can lead to skin damage in just 10 minutes. This trend of rising UV levels, starting from a moderate 6 in January and peaking at 12 from April through September, highlights the region's intense sun during the summer months. As the year progresses, the UV Index begins to decline, dropping to 10 in October, yet visitors should remain cautious throughout the year. Given the significant shifts in UV exposure, it's crucial to stay informed and protected while enjoying the beautiful beaches of Costa Azul. For more details, check the Costa Azul UV Index.
UV Risk Categories
As summer transitions into fall, September in Costa Azul, Mexico offers a delightful embrace of sunshine, boasting an impressive 284 hours of radiant light. While this marks a decline from the sun-drenched peak of May, which shines with 360 hours, September still captures the warmth of late summer, promising plenty of opportunities for sun-soaked adventures. Following a consistent drop from the high summer months, the sunshine hours in September reflect a natural shift as the year progresses toward cooler days. Nevertheless, with October stepping up to provide 300 hours of brightness, the golden glow of Costa Azul continues to invite both relaxation and exploration throughout the early autumn.
September in Costa Azul, Mexico, offers a moderate chance of sunny weather, sitting at around 52%. This reflects a notable shift from the sun-soaked days of May, which boasts an impressive 80% likelihood of sunshine. As summer wanes, August experiences a decline to just 30%, indicating the onset of the rainy season. September maintains some of that lingering warmth, yet it mirrors the lower probabilities seen in July, also at 52%. Following this, October shows a promising rebound with a 77% likelihood of sunny days, suggesting that while September may be a transitional month, it still holds potential for enjoyable weather for those visiting Costa Azul.
In Costa Azul, Mexico, the month of September brings a delightful balance of 12 hours of daylight, aligning it with the warm, sun-kissed months of April, May, and August. This period marks a gentle transition from the longer, sun-drenched days of summer, which peak at 13 hours in June and July. As September rolls in, daylight starts to wane, hinting at the shorter days of the upcoming fall months. The consistent daylight duration throughout September creates an inviting atmosphere for both locals and travelers, making it an ideal time to enjoy the beauty of this coastal paradise before the daylight hours diminish further in October.
As summer fades into fall, September winds in Costa Azul provide a gentle transition, with an average speed of 3.0 m/s (7 mph)—the calmest of the year. Compared to the breezy highs of March at 4.5 m/s (10 mph), September's winds reflect a natural ebb, signaling a time of slowed pace. Following the warmer months, where wind speeds hovered around 3.4 m/s (8 mph) in both July and August, this slight dip invites both serenity and contemplation. Interestingly, as October approaches, winds begin to pick up again to 3.4 m/s (8 mph), hinting at the invigorating changes that autumn brings to this beautiful coastal haven. Overall, September’s mellow breezes encapsulate the charm of the season, making it a perfect time for leisurely strolls along the beach.
The weather in Costa Azul 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 Costa Azul and find detailed weather information for every month.
In September, the weather is significantly warmer and more humid, with average temperatures ranging from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), coupled with high humidity at 78%. This month also experiences considerable rainfall, with around 154 mm (6.0 in) of precipitation spread over 17 days. In contrast, January offers a much cooler and drier climate, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 24°C (75°F). It sees only minimal precipitation of 5 mm (0.2 in) over just one day, accompanied by lower humidity at 70%. For a detailed look at January's weather, check out the information here: Costa Azul weather in January.
September and February present strikingly different weather patterns. In September, temperatures are considerably warmer, with minimums around 25°C (78°F) and averages reaching 29°C (84°F), peaking at 32°C (90°F). This month also sees significant rainfall, averaging 154 mm (6.0 in) over 17 days, accompanied by high humidity levels at 78%. In contrast, February offers a much cooler climate, with minimum temperatures of 14°C (57°F) and maximums of 24°C (75°F), resulting in a more comfortable average of 19°C (67°F). Precipitation is minimal during this month, averaging only 15 mm (0.6 in) over just 2 days, and with lower humidity at 67%. For more details, check the link here: Costa Azul weather in February.
In September, the weather is notably warmer and more humid compared to March, with temperatures averaging 29°C (84°F), peaking at 32°C (90°F) during the day. This month also sees significant rainfall, with an average precipitation of 154 mm (6.0 in) over 17 days, contributing to high humidity levels of 78%. In contrast, March offers a much cooler climate, with average temperatures around 20°C (68°F) and a maximum of 25°C (77°F). Additionally, it experiences minimal rainfall, averaging only 2 mm (0.1 in) with no rainy days, resulting in lower humidity levels of 62%. For a closer look at March weather specifics, you can visit Costa Azul weather in March.
September and April present quite contrasting weather conditions. September boasts warmer temperatures, with minimums around 25°C (78°F) and averages peaking at 29°C (84°F), while April is cooler, featuring an average temperature of 22°C (72°F) with a maximum of 26°C (79°F). Additionally, September experiences significant rainfall, recording 154 mm (6.0 in) over 17 days, resulting in high humidity levels of 78%. In stark contrast, April remains dry, with no precipitation and average humidity levels at a much more comfortable 58%. For a more detailed view of April’s weather, you can check out Costa Azul weather in April.
When comparing the weather between September and May, the differences are quite pronounced. September tends to be hotter, with average temperatures reaching 29°C (84°F) and maximums soaring to 32°C (90°F). In contrast, May offers a milder climate with an average temperature of 25°C (77°F) and maximums only up to 29°C (84°F). Additionally, September experiences significant rainfall, with 154 mm (6.0 in) of precipitation over 17 days and high humidity at 78%. In stark contrast, May boasts dry conditions with no recorded precipitation and a lower humidity level of 59%. For a closer look at the delightful weather in May, check out Costa Azul weather in May.
In comparing the weather of September and June, September tends to be warmer and more humid. The minimum temperature in September is slightly higher at 25°C (78°F) compared to June's 23°C (74°F), with an average temperature of 29°C (84°F) versus June's 27°C (81°F). Although the maximum temperatures are similar, with September reaching up to 32°C (90°F) and June peaking at 31°C (88°F), September experiences significantly more precipitation, with 154 mm (6.0 in) over 17 days, while June sees only 18 mm (0.7 in) across just 1 day. The humidity in September is also higher at 78%, compared to June's 64%. For more detailed information about June's climate, you can look at Costa Azul weather in June.
In July, the weather exhibits slightly cooler average temperatures, with a minimum of 26°C (78°F) and a maximum of 32°C (89°F). This month also sees considerably less precipitation, recording only 42 mm (1.6 in) over just 6 days, and lower humidity at 74%. In contrast, September experiences a similar average temperature of 29°C (84°F) but has higher minimum and maximum temperatures of 25°C (78°F) and 32°C (90°F) respectively. Additionally, September is much wetter, with 154 mm (6.0 in) of precipitation spread over 17 days and humidity rising to 78%. For a closer look at July weather patterns, check out Costa Azul weather in July.
In comparing the weather between August and September, both months experience similar temperatures, with September averaging 29°C (84°F) and August at 29°C (85°F). However, September sees slightly cooler minimum temperatures, dropping to 25°C (78°F) compared to August's minimum of 26°C (78°F). Additionally, September is marked by increased rainfall, with 154 mm (6.0 in) occurring over 17 days, whereas August has lower precipitation levels of 105 mm (4.1 in) across 13 days. Humidity remains consistent at 78% for both months. For more detailed insights on August weather, visit Costa Azul weather in August.
September weather is characterized by warmer temperatures, with a minimum of 25°C (78°F) and an average of 29°C (84°F), while October brings slightly cooler conditions, starting with a minimum of 21°C (71°F) and an average of 28°C (83°F). Additionally, September experiences significantly higher precipitation, totaling 154 mm (6.0 in) across 17 days, compared to October's much drier climate with only 30 mm (1.2 in) over 3 days. Humidity levels remain fairly similar, with September at 78% and October slightly lower at 75%. For a more detailed look at the weather specifics in October, check out Costa Azul weather in October.
In September, the weather is notably warmer, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 32°C (90°F) and an average of 29°C (84°F). This month also sees higher precipitation levels, totaling 154 mm (6.0 in) over 17 days, accompanied by a humidity of 78%. In contrast, November brings a refreshing change, with temperatures decreasing to a minimum of 19°C (67°F) and an average of 25°C (76°F), peaking at 30°C (85°F). Precipitation drops significantly to 24 mm (0.9 in) over just 2 days, and humidity eases slightly to 74%. This transition from the humid, rainy conditions of September to the milder, drier climate of November marks a distinct shift in weather patterns. For more detailed information, you can visit Costa Azul weather in November.
September and December present contrasting weather patterns. In September, temperatures typically range from a minimum of 25°C (78°F) to a maximum of 32°C (90°F), with an average temperature of 29°C (84°F). This month experiences significant rainfall, averaging 154 mm (6.0 in) over 17 days, along with a high humidity level of 78%. In sharp contrast, December brings cooler temperatures, with a minimum of 14°C (58°F) and a maximum of 27°C (80°F), averaging 21°C (70°F). Additionally, December sees only 8 mm (0.3 in) of precipitation across just 2 days and lower humidity at 72%. For more details on weather conditions in December, you can visit Costa Azul weather in December.
As September unfolds in Costa Azul, the weather takes a distinctive turn. With temperatures averaging around 29°C (84°F), the warmth remains inviting, but it is coupled with a noticeable increase in rainfall, totaling approximately 154 mm over 17 days. This month often ushers in higher humidity levels, hovering around 78%, creating a lush and vibrant atmosphere. Unlike the drier summer months, September is characterized by its rhythmic dance of sunshine and showers, making it a unique time to experience the natural beauty of the region. For more information on how September fits into the broader climatic patterns, explore Costa Azul Climate.