Last updated: April 22, 2025
Experience the vibrant August weather of San Diego, Mexico, where temperatures soar with a maximum of 37°C (98°F) and an enticing average of 29°C (85°F). As the warm days unfold, the evenings offer a refreshing minimum of 23°C (75°F), perfect for leisurely strolls along the coast. However, prepare for the humidity that lingers at 87%, creating a tropical atmosphere. August also brings the chance of rain, with 152 mm (6.0 in) of precipitation spread over 19 days. Whether you’re basking under the sun or caught in a summer shower, San Diego's climate promises a memorable getaway filled with warmth and unexpected adventures.
In August, San Diego, Mexico, typically enjoys warm weather with a minimum temperature of 23°C (75°F), an average of 29°C (85°F), and a maximum reaching 37°C (98°F). This month reflects the peak of summer, maintaining consistent warmth similar to July, while also hinting at the gradual transition towards the cooler months ahead. With temperatures largely stable, residents and visitors alike can revel in outdoor activities, beach outings, and vibrant local events, all under the endless blue skies of August. As the summer heat lingers, the city’s vibrant atmosphere thrives, making it a prime time for embracing the sun-soaked landscapes and rich cultural experiences San Diego has to offer.
August stands out as a pivotal month in San Diego, Mexico, marked by a significant uptick in precipitation. With 152 mm (6.0 inches) of rain over 19 days, it contributes to the city's overall wettest month, following a notably dry spell from April to May. This dramatic increase in rainfall, nearly doubling the amount recorded in July, signals the heart of the rainy season. Moreover, it sets the tone for September, which remains wet but slightly less intense at 143 mm (5.6 inches) over 20 days. The trend shows that while the earlier months are characterized by scarce precipitation, mid to late summer brings a refreshing shift, underscoring the impact of seasonal weather patterns on the region's climate.
In August, San Diego, Mexico experiences a peak in humidity at 87%, marking it as one of the most humid months of the year. This upward trend is notable as the humidity gradually rises from a more comfortable 49% in April and May to a substantial 82% in July, creating a steamy environment as summer reaches its finale. Following August, humidity remains high in September at 88%, indicating a persistent tropical grip as the region transitions into fall. These levels highlight a marked seasonal shift, transforming the coastal ambiance into a humid tapestry, which may influence local weather patterns and lifestyle choices for residents and visitors alike.
In August, San Diego, Mexico, experiences a consistent UV Index of 12, placing it firmly within the extreme exposure category. This trend of elevated UV levels persists through the summer months, mirroring the high indexes recorded in July and June. With a quick burn time of just 10 minutes, it's crucial for sunbathers and outdoor enthusiasts to prioritize skin protection during this peak season. As the summer wanes into early autumn, the UV Index remains elevated into September, further emphasizing the need for vigilance against sun exposure. For more detailed information on UV levels throughout the year, check out San Diego UV Index.
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August in San Diego, Mexico, continues the city's sun-soaked tradition, boasting 296 hours of glorious sunshine. While this figure is a slight dip from July's 319 hours, it remains part of a vibrant summer trend. The months leading up to August showcase an impressive rise in sunshine, starting from 222 hours in January and steadily increasing to a peak of 360 hours in May. Although the intensity of sunlight begins to wane as autumn approaches—with September seeing 278 hours—August still offers plenty of bright days, ensuring that visitors and locals alike can relish the warmth and beauty of the season. San Diego's consistent sunshine throughout the year, particularly during the summer months, underscores its charm as a go-to destination for sun lovers.
In San Diego, Mexico, the likelihood of sunny weather takes a notable dip in August, with only a 21% chance of sun, marking it as one of the cloudier months of the year. This decline follows the more optimistic conditions of May, boasting an 80% chance of sunshine, and the relatively bright days in April and January, both around 65%. As summer progresses, the sunny probabilities drop dramatically, especially in July where they hit a low of 40%. Following the August slump, September sees a slight rebound with another 40% chance of sun, before October returns to more favorable conditions at 75%. Consequently, August can be characterized as a month best suited for indoor activities or seeking shelter from potential showers rather than basking in the sun.
In August, San Diego experiences approximately 12 hours of daylight, maintaining the trend of longer days established earlier in the summer months. Following the peak of 13 hours in both June and July, daylight begins to gradually wane, signaling the subtle shift towards autumn. The consistency of 12 hours in August and September suggests a slight stabilization as summer starts to transition. This gradual change from the longest days of the year embodies the region's characteristic climate, where vibrant sunsets linger just a little longer, inviting residents and visitors alike to relish the outdoor warmth before the days shorten further in the fall.
In August, San Diego experiences a noticeable dip in wind speed, averaging just 1.5 m/s (3 mph), which is among the lowest of the year. This gentle breeze not only provides a respite from the summer heat but also marks the transition towards the cooler months ahead. Following the trend established in the preceding months, wind speeds gradually decrease from June's peak of 2.1 m/s (5 mph), thus creating a calm atmosphere that's perfect for relaxation by the beach. The shift to milder winds continues into September, where a further decline to 1.4 m/s (3 mph) is observed. Overall, while August may feature lighter winds, it sets the stage for a serene end to summer in this beautiful coastal enclave.
The weather in San Diego 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 Diego and find detailed weather information for every month.
The weather in August is characterized by high temperatures, with averages around 29°C (85°F) and maximums soaring up to 37°C (98°F), making it a hot and humid month with an average humidity of 87% and considerable precipitation of 152 mm (6.0 in) over 19 days. In contrast, January offers a much milder climate, with average temperatures around 20°C (68°F) and maximums reaching 33°C (91°F), but with significantly less rainfall, only 6 mm (0.3 in) across just one day, and a lower humidity of 76%. For more detailed information, you can check out San Diego weather in January.
In comparing the weather between August and February, it's clear that August is characterized by much higher temperatures and increased humidity. With average temperatures around 29°C (85°F) and peaks reaching up to 37°C (98°F), August can feel quite tropical, especially with a humidity level of 87% and significant precipitation of 152 mm (6.0 in) over 19 days. In contrast, February offers a much milder climate, with average temperatures around 20°C (69°F) and maximums of 33°C (92°F), along with significantly lower precipitation of just 24 mm (0.9 in) over only 2 days. The humidity also drops to 69%, making February a more comfortable month overall. For more details on February weather, you can check San Diego weather in February.
In comparing the weather between August and March, one can observe significant differences. August boasts warmer temperatures, with a minimum of 23°C (75°F) and an average of 29°C (85°F), reaching highs of up to 37°C (98°F). It also experiences substantial rainfall, with 152 mm (6.0 in) over 19 days, leading to high humidity levels at 87%. In contrast, March offers a much cooler climate, featuring a minimum of 10°C (51°F) and an average of 22°C (72°F), with maximum temperatures reaching 34°C (94°F). Notably, March enjoys very little precipitation, with only 2 mm (0.1 in) and no rainy days, resulting in lower humidity at 57%. For more detailed information, you can explore San Diego weather in March.
The weather in August and April presents a stark contrast in both temperature and humidity. August experiences warmer temperatures, with a minimum of 23°C (75°F) and an average of 29°C (85°F), reaching a high of 37°C (98°F). In contrast, April is cooler, with a minimum temperature of 12°C (53°F), an average of 24°C (75°F), and a maximum of 36°C (97°F). Additionally, August is significantly wetter, boasting 152 mm (6.0 in) of precipitation spread over 19 days, while April enjoys dry conditions with 0 mm of rainfall and no rainy days. The humidity in August also peaks at 87%, compared to a more comfortable 49% in April, making April a much more pleasant month overall. For more details on the climate, you can check out San Diego weather in April.
August and May present distinctly different weather patterns. In August, temperatures range from a minimum of 23°C (75°F) to an average of 29°C (85°F), peaking at a scorching 37°C (98°F). This month is marked by high humidity at 87% and significant rainfall, with around 152 mm (6.0 in) of precipitation distributed over 19 days. In contrast, May enjoys milder temperatures, starting at a minimum of 15°C (60°F) and averaging 26°C (80°F), with the same maximum of 37°C (98°F). Notably, May is characterized by dry conditions, recording no precipitation and maintaining a considerably lower humidity of 49%. For more details on the weather specifically in San Diego during May, you can visit San Diego weather in May.
Comparing the weather in August and June reveals some notable differences. In August, temperatures range from a minimum of 23°C (75°F) to a maximum of 37°C (98°F), with an average temperature of 29°C (85°F). This month experiences much higher humidity at 87% and significantly more precipitation, with 152 mm (6.0 in) of rainfall spread over 19 days. In contrast, June generally offers slightly cooler conditions with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 38°C (100°F), averaging 29°C (84°F). Moreover, June sees much less rainfall, totaling only 26 mm (1.0 in) over just 3 days and a lower humidity level of 64%. For more details, check out San Diego weather in June.
In comparing the weather of July and August, both months exhibit similar temperature patterns, with minimums around 23°C (75°F) and average highs of 29°C (85°F). However, August tends to be slightly more humid, with humidity levels at 87% compared to July’s 82%. Notably, August experiences significantly more precipitation, totaling 152 mm (6.0 in) over 19 days, while July has only 86 mm (3.4 in) over 14 days. For a detailed look at July's weather specifics, you can check San Diego weather in July.
In comparing the weather of August and September, both months exhibit warm temperatures, with August having an average temperature of 29°C (85°F) and September slightly cooler at an average of 28°C (83°F). The minimum temperatures remain consistent, hovering around 23°C (75°F) in August and 23°C (74°F) in September. Precipitation levels in August are slightly higher at 152 mm (6.0 in), compared to 143 mm (5.6 in) in September, although both months experience rain on a similar number of days. Humidity remains high in both months, with August at 87% and September at 88%. For more details on the specific conditions of September, check out the information here: San Diego weather in September.
August and October present distinct contrasts in weather despite some similarities. In August, temperatures typically range from a minimum of 23°C (75°F) to a scorching maximum of 37°C (98°F), with an average of 29°C (85°F). The month is notably humid, characterized by high humidity levels of 87% and significant rainfall of 152 mm (6.0 in) on about 19 days. In contrast, October sees cooler nights with a minimum temperature of 18°C (64°F) and a slightly reduced average of 28°C (83°F), while also reaching the same maximum of 37°C (98°F). Precipitation drops dramatically to just 43 mm (1.7 in) over only 5 days, accompanied by a decrease in humidity to 83%. For more insights into the October climate, you can check San Diego weather in October.
August and November present contrasting weather conditions. In August, temperatures are generally warmer, with an average of 29°C (85°F) and maximums reaching up to 37°C (98°F). This month is also characterized by high humidity at 87%, and a significant amount of rainfall, totaling 152 mm (6.0 in) over 19 days. In stark contrast, November sees a drop in temperature, with an average of 25°C (77°F) and minimums cooling down to 14°C (58°F). Precipitation is much lighter in November, with only 46 mm (1.8 in) over just 2 days, and humidity slightly lower at 84%. For more details, check out San Diego weather in November.
August and December present strikingly different weather patterns. In August, temperatures soar with a minimum of 23°C (75°F) and can peak at a sweltering 37°C (98°F), while the average sits at a warm 29°C (85°F). This month is also marked by high humidity at 87% and significant rainfall, accumulating to 152 mm (6.0 in) over 19 days. In contrast, December brings much cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 34°C (93°F), averaging at a mild 21°C (70°F). Precipitation drops dramatically to just 17 mm (0.7 in) across only 2 days, and humidity remains similar at 86%. For a more detailed look at December weather, check out San Diego weather in December.
August in San Diego brings a vibrant warmth that sets it apart from the rest of the year. With temperatures soaring to a peak of 37°C (98°F), the summer heat is palpable, making it a prime time for beach outings and outdoor activities. However, the month is also characterized by significant humidity at 87% and periodic rainfall, with nearly one-third of August experiencing precipitation. This combination creates a unique atmosphere that contrasts sharply with the drier and cooler months ahead. For more insights on the overall weather patterns in this coastal gem, check out San Diego Climate.