Last updated: April 22, 2025
Experience the tropical charm of San Juan Vallarta, Mexico in August, where the weather delivers a delightful blend of warmth and humidity. With maximum temperatures reaching 32°C (90°F) and an average of 21°C (71°F), expect a sunny ambiance perfect for outdoor adventures. However, prepare for occasional rain, as 25 days of precipitation can bring a total of 254 mm (10.0 in), making it a lush time for lush landscapes. Combined with humidity levels around 70%, August's climate invites visitors to embrace the heat and enjoy the vibrant atmosphere of this beautiful coastal destination.
August in San Juan Vallarta, Mexico, brings warm and inviting temperatures that perfectly embody summer's essence. The average temperature hovers around a comfortable 21°C (71°F), with nighttime lows ranging from 13°C (55°F) to daytime highs peaking at 32°C (90°F). This slight dip from July's highs ensures a tropical vibe without overwhelming heat, making it an ideal time for sun-soaked beach days and vibrant evening strolls. As the summer season transitions towards fall, August also marks one of the last months of peak warmth before temperatures begin to cool, allowing visitors to enjoy the beauty of Vallarta's coastline in glorious weather.
In August, San Juan Vallarta experiences significant rainfall, with 254 mm (10 inches) accumulating over 25 days, making it one of the wettest months of the year. This surge in precipitation follows the already high levels seen in July and is indicative of the region's tropical climate, where summer storms dominate the landscape. As the rainy season peaks, visitors can expect vibrant, lush surroundings shaped by the frequent showers. This month showcases a clear upward trend in both the volume and frequency of rainfall, setting the stage for September, which typically sees even heavier downpours. While the increased precipitation can deter some travelers, those who embrace the rain are rewarded with a captivating, verdant paradise that's rich in flora and local charm.
In August, San Juan Vallarta experiences an average humidity of 70%, reflecting a slight uptick from the drier conditions of July, which recorded 68%. This month typically marks the transition toward a more humid climate, leading into September's peak humidity of 82%. Notably, while temperatures may be soaring, the humidity levels in August offer a brief respite compared to the sweltering highs of the summer, maintaining a balance that keeps the coastal atmosphere inviting. As the year progresses, humidity notably escalates, peaking in the late fall and winter months, creating a lush and vibrant environment in this tropical paradise.
In August, San Juan Vallarta experiences a persistent UV Index of 14, categorized as extreme, which means sun protection is crucial as burn time is a mere 10 minutes. This trend of heightened UV exposure continues from March through September, reflecting the region's tropical climate and the sun's intensity during these months. As the summer progresses, the UV Index remains alarmingly high, prompting visitors and locals alike to prioritize skin safety. With the return to slightly lower indices in October, the summer months stand out as a time when stepping outside without protection could lead to serious sunburn. For more information on UV levels throughout the year, check out San Juan Vallarta UV Index.
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In August, San Juan Vallarta continues to bask in the golden glow of the summer sun, boasting 316 hours of sunshine. This slight dip from the peak of 332 hours in May and 329 hours in July still places August among the sunniest months of the year. As summer transitions into fall, sunshine hours gradually decrease, yet August remains a vibrant time to visit, offering plenty of opportunities to soak up the sun before the cooler months set in. While the sun's rays may lessen in September with 291 hours, August’s brilliance serves as a vivid reminder of the region’s warm, inviting climate.
In San Juan Vallarta, Mexico, August presents a moderate chance of sunny weather, with a likelihood of only 31%. This marks a noticeable decline from the sunnier months of earlier in the year, particularly in February (90%) and March (77%). As summer progresses, the transition into the rainy season begins, evidenced by the dip in sunlight as we move through June (9%) and July (26%). The trend suggests that while August still offers opportunities for sunshine, visitors should be prepared for a mix of cloudy skies and the possibility of rain. As the seasons shift, it becomes clear that late summer in Vallarta is defined not only by its warmth but also by a growing chance of tropical showers.
In San Juan Vallarta, Mexico, August witnesses a delightful balance in daylight duration, with 12 hours of sun illuminating the vibrant landscapes. As summer heats up, the city enjoys a consistent stretch of bright days, a trend that peaks in May through July with an impressive 13 hours. Following this peak, August experiences a slight dip, marking a transition into September, which maintains the same 12 hours of daylight. This rhythm of light and shadow not only enriches the outdoor experience but also beautifully sets the stage for the lush, tropical scenery that defines this coastal paradise. The gradual decrease in daylight as the year progresses signals the approach of fall, offering a serene closure to the summer months.
In August, the winds in San Juan Vallarta slow down to a gentle 1.5 m/s (3 mph), mirroring the calm breezes of both June and September. This slight dip in average wind speed reflects a broader trend throughout the summer months, where wind speeds typically decrease, hinting at the tropical heat settling in. From peaks earlier in the year, notably in January and February with average speeds reaching up to 2.2 m/s (5 mph), August offers a serene respite, perfect for leisurely beach days and sunset strolls along the coastline. As the season transitions into autumn, the winds gradually pick up again, setting a rhythm that embodies the relaxed charm of Vallarta’s summer atmosphere.
The weather in San Juan Vallarta changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in San Juan Vallarta and find detailed weather information for every month.
August and January present quite different weather experiences. In August, temperatures can soar as high as 32°C (90°F), with a warm average of 21°C (71°F), emphasizing a peak summer feel. This month also sees considerable rainfall, accumulating about 254 mm (10.0 in) over approximately 25 days, accompanied by a humidity level of 70%. In contrast, January is notably cooler, with a maximum temperature of 30°C (86°F) and a more temperate average of 18°C (64°F). Rain is scarce, with just 4 mm (0.2 in) of precipitation over a mere 1 day, though the humidity rises to 84%. For more specific insights on weather in January, you can visit San Juan Vallarta weather in January.
In August, the weather in San Juan Vallarta presents warm temperatures with a minimum of 13°C (55°F) and an average of 21°C (71°F), peaking at a maximum of 32°C (90°F). This month is characterized by high humidity at 70% and considerable rainfall, averaging 254 mm (10.0 in) spread over 25 days. In contrast, February experiences milder temperatures, with a minimum of 7°C (45°F) and an average of 20°C (68°F), while it can reach up to 31°C (88°F). The precipitation in February is significantly lower, recorded at just 6 mm (0.2 in) over 2 days, along with higher humidity levels at 78%. For a more detailed comparison of weather in February, visit San Juan Vallarta weather in February.
When comparing the weather in August and March, notable differences emerge in temperature and precipitation patterns. August tends to be warmer, with average temperatures reaching 21°C (71°F) and maximums soaring to 32°C (90°F), while March has a similar average of 22°C (71°F) but can peak higher at 34°C (93°F). However, August brings significantly more rain, with 254 mm (10.0 in) of precipitation over 25 days compared to March's much lighter 13 mm (0.5 in) over just 3 days. Humidity levels are also relatively high in both months, with August at 70% and March slightly higher at 75%. For a detailed look at conditions during March, you can explore San Juan Vallarta weather in March.
When comparing the weather in August and April, there are notable differences in temperature and precipitation. August experiences a wider temperature range with minimums of 13°C and maximums reaching up to 32°C, resulting in an average temperature of 21°C. It is also characterized by significant rainfall, with about 254 mm accumulating over 25 days. In contrast, April generally sees slightly lower minimum temperatures at 10°C, but it can reach a higher maximum of 34°C, with an average of 23°C. April is much drier, receiving only 36 mm of rain over 7 days. Both months share similar humidity levels at 70%, but April's weather is notably milder and less rainy. For a detailed look at April's weather, you can refer to San Juan Vallarta weather in April.
When comparing the weather in August and May, notable differences emerge. In August, the temperatures range from a minimum of 13°C (55°F) to a maximum of 32°C (90°F), with an average of 21°C (71°F). This month also experiences significant rainfall, averaging 254 mm (10.0 in) over 25 days, coupled with a humidity level of around 70%. Conversely, May offers slightly warmer conditions with temperatures ranging from 14°C (57°F) to a maximum of 35°C (95°F), and an average temperature of 23°C (74°F). It is also drier, with only 131 mm (5.2 in) of precipitation over 17 days, though humidity is higher at 77%. For a deeper dive into the specifics of May weather, take a look at San Juan Vallarta weather in May.
When comparing the weather in June and August, one can observe some notable differences despite their overall similarities. June typically experiences slightly cooler minimum temperatures, averaging 14°C (57°F), while August has a minimum of 13°C (55°F). Both months share the same average temperature of around 21°C (71°F), but August sees higher maximum temperatures, reaching up to 32°C (90°F) compared to June's peak of 35°C (94°F). Precipitation levels are fairly close, with June accumulating 277 mm (10.9 in) over 24 days and August receiving 254 mm (10.0 in) across 25 days. Humidity is slightly higher in June at 76%, while August follows closely at 70%. For a more detailed look at June weather, check out San Juan Vallarta weather in June.
In comparing the weather of August and July, both months showcase similar average temperatures, hovering around 21°C (71°F). However, August experiences slightly warmer minimum and maximum temperatures, with a minimum of 13°C (55°F) and a maximum of 32°C (90°F), compared to July's minimum of 12°C (54°F) and maximum of 32°C (91°F). Precipitation levels are notably higher in August, with 254 mm (10.0 in) falling over 25 days, compared to July's 198 mm (7.8 in) over 22 days. Additionally, humidity levels rise slightly in August to 70%, while July sees a more moderate 68%. For further details, you can check the San Juan Vallarta weather in July.
In comparing the weather of August and September, both months exhibit relatively mild temperatures, with August having a maximum of 32°C (90°F) and September reaching a slightly lower maximum of 29°C (85°F). The minimum temperatures remain consistent, starting at 13°C (55°F) in August and 13°C (56°F) in September. However, September tends to be wetter, with precipitation increasing to 314 mm (12.4 in) over 26 days, compared to August's 254 mm (10.0 in) over 25 days. Additionally, humidity levels rise from 70% in August to 82% in September, contributing to a more tropical feel as the seasons change. For more detailed information, you can explore San Juan Vallarta weather in September.
August and October present noticeably different weather patterns. In August, temperatures range from a minimum of 13°C (55°F) to a maximum of 32°C (90°F), with an average of around 21°C (71°F). This month is characterized by significant rainfall, with 254 mm (10.0 in) falling over 25 days, contributing to a humidity level of 70%. In contrast, October features cooler temperatures, with a minimum of 9°C (49°F) and a maximum of 30°C (86°F), while maintaining a similar average of 20°C (69°F). Precipitation decreases to 120 mm (4.7 in) over 16 days, but humidity rises to 91%. For a more detailed look at the weather during October, you can check San Juan Vallarta weather in October.
In August, the weather is typically warm and humid, with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 32°C (90°F) and an average of 21°C (71°F). This month is characterized by significant precipitation, totaling 254 mm (10.0 in) over approximately 25 days. In contrast, November experiences a cooler atmosphere, with temperatures dipping to a minimum of 9°C (48°F) and averaging 19°C (67°F), while the maximum temperature reaches 30°C (86°F). Precipitation significantly decreases to 36 mm (1.4 in) across just 5 days, although humidity remains high at 89%. For a more detailed look at November weather, you can visit San Juan Vallarta weather in November.
August and December showcase a stark contrast in weather patterns. In August, temperatures range from a low of 13°C (55°F) at night to a high of 32°C (90°F) during the day, accompanied by considerable precipitation of 254 mm (10.0 in) over 25 days, resulting in a humid environment with 70% humidity. In contrast, December presents much cooler temperatures with a minimum of 5°C (41°F) and a maximum of 29°C (85°F), while experiencing a mere 4 mm (0.1 in) of rainfall and 0 days of precipitation. Despite the lower average temperature of 18°C (65°F) in December, the humidity levels rise to 88%, creating a different sensation compared to the summer months. For more detailed weather information, you can check San Juan Vallarta weather in December.
August in San Juan Vallarta marks a notable shift in weather, characterized by higher temperatures and increased humidity compared to other months. As the summer peaks, daily maximums soar, providing a warm backdrop for vibrant outdoor activities. However, this warmth comes with significant precipitation, resulting in nearly every day seeing some rain, creating a lush and green landscape. Travelers can expect to experience the tropics in full swing, with humidity levels around 70%, making it feel even warmer. For those seeking to understand the seasonal shifts in this beautiful coastal region, detailed insights can be found in the guide on the local San Juan Vallarta Climate.