Last updated: April 22, 2025
In August, San Diego, Mexico experiences a vibrant climate characterized by warm temperatures, with maximum highs reaching 37°C (99°F) and an average of 28°C (83°F), providing plenty of sunshine for outdoor activities. The evenings cool down to a minimum of 21°C (71°F), perfect for enjoying the coastal breeze. However, this month also brings moderate rainfall, accumulating to 103 mm (4.1 in) over the course of 18 days, contributing to the region's lush landscapes. With humidity levels at a balmy 78%, visitors can expect a mix of sun and occasional showers, making August a dynamic time to explore the beauty and culture of San Diego.
In August, San Diego, Mexico, experiences delightful warmth, with minimum temperatures hovering around 21°C (71°F) and an average of 28°C (83°F), creating a pleasant atmosphere perfect for summer activities. The maximum reaches 37°C (99°F), slightly lower than the peak temperatures of earlier summer months, indicating a gradual cooling trend as the season begins to transition into fall. This month continues the trend of consistently mild evenings that are characteristic of the region, offering a delightful escape from the heat during the day. With such inviting temperatures, August serves as an ideal time for beachgoers and outdoor enthusiasts to soak in the sun while enjoying the vibrant lifestyle that San Diego has to offer.
August marks a significant peak in precipitation for San Diego, Mexico, with a notable 103 mm (4.1 in) falling across 18 days. This increase is part of a broader trend observed during the summer months, which begin with relatively low rainfall in May (54 mm) but escalate sharply through June (192 mm) and July (68 mm) before reaching this August high. This substantial fluctuation underscores the region's transition into the monsoon season, where a significant amount of rain can fall in just a short time, hinting at a dynamic climate pattern throughout the year. As August’s rain leads into the wetter months of September and October, the landscape transforms, showcasing the lush beauty that follows the torrential downpours.
In August, San Diego, Mexico experiences a noticeable increase in humidity at 78%, a significant jump from the drier months of late spring and early summer, where levels hovered around 62% to 65%. As the summer progresses, humidity gradually rises, peaking in the months following, with September and October reaching 85% and 87% respectively. This trend highlights a shift from the comfortable, lower humidity typical of late spring to the muggy atmosphere of late summer and fall, signaling that visitors should be prepared for a more humid climate as the season transitions. The pattern reveals that while January begins the year with the highest levels at 85%, the latter part of the year sees even more moisture, with late autumn consistently remaining in the high 80s.
In August, San Diego experiences a UV Index of 12, categorizing it as extreme exposure, with a burn time of just 10 minutes. This trend reflects the peak summer months, where UV levels remain consistently high, only slightly lower than the scorching maximum of 13 observed from March through July. As summer wanes, September also holds steady with a UV Index of 12, indicating that sun protection remains crucial even as the season transitions. For more detailed insights on UV exposure in this vibrant coastal city, check out San Diego UV Index.
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August in San Diego, Mexico, shines brightly with 314 hours of sunshine, continuing the trend of ample daylight that the summer months bring. Following a peak in May with 328 hours, the sun remains generous as it transitions into late summer, slightly decreasing yet still providing plenty of warm, vibrant days. The sunshine gradually wanes in the months ahead, with July and September also holding notable hours at 316 and 291 respectively. In contrast, winter months see lower totals, with January starting the year at 224 hours. Overall, San Diego's sunny disposition creates an inviting atmosphere that persists well into the summer, making it a perfect destination for sun-seekers.
August in San Diego, Mexico, sees a balanced 50% chance of sunny weather, making it a favorable time for beachgoers and outdoor enthusiasts. This month stands out as a pivotal transition—following a dip in sunny probabilities during the early summer months of June and July, August marks a return to more promising conditions. As the summer unfolds, visitors can expect a delightful blend of sun and clouds, with the likelihood of clear skies improving as the season progresses towards the fall months. Notably, the sunniest months surrounding August include March, with a striking 66% chance, and November, bringing in the year’s 58% chance, indicating that while August may not be the sunniest month, it remains a delightful and sunny escape in San Diego's climate calendar.
In August, San Diego basks in an average of 12 hours of daylight, a slight decline from the sun-drenched days of summer peak in June and July, when the city enjoys its longest daylight duration of 13 hours. As summer begins to wane, this reduction hints at the approaching fall months, where daylight gradually decreases through September and beyond, with October and November reverting to 11 hours. This rhythmic pattern not only marks the transition of seasons but also underscores San Diego's consistent climate, making it a perennial favorite for sun-seekers year-round.
In August, the winds in San Diego, Mexico offer a gentle embrace, with an average speed of 2.4 m/s (5 mph)—consistent with the calm breezes of January and September. This slight ebb in wind intensity follows a steady increase from the tranquil conditions of early winter to the more spirited spring months, where winds peak at 3.1 m/s (7 mph) during March, April, and May. As summer transitions into autumn, a gradual decline becomes evident, hinting at a cooling trend. The soft winds of August invite leisurely afternoons by the beach, contrasting with the livelier gusts of earlier months, while portending the quieter breezes of October. This rhythm of nature not only defines the local climate but enriches the experience of life in this vibrant coastal region.
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.
In August, the weather is warm and humid, with average temperatures around 28°C (83°F) and highs reaching up to 37°C (99°F). The month sees significant rainfall, totaling about 103 mm (4.1 in), spread over 18 days, resulting in a humidity level of 78%. In contrast, January offers a cooler climate with average temperatures of 23°C (75°F) and daytime highs that can reach 38°C (101°F). Precipitation is much lower, at 30 mm (1.2 in) over just 4 days, while humidity rises slightly to 85%. For more detailed information, check out San Diego weather in January.
August and February present contrasting weather patterns. In August, temperatures can soar, with an average of 28°C (83°F) and peaks reaching up to 37°C (99°F). The month also sees significant rainfall, with about 103 mm (4.1 in) of precipitation occurring over 18 days, along with high humidity levels at 78%. In contrast, February offers milder conditions, with an average temperature of 25°C (78°F) and a maximum of 36°C (97°F). The month is notably drier, featuring only 10 mm (0.4 in) of precipitation over a mere 3 days, alongside slightly higher humidity at 80%. For those interested in more details about February weather, you can check out San Diego weather in February.
When comparing the weather in August and March, it's evident that August is typically much more humid and receives significantly more rainfall. August temperatures range from a minimum of 21°C (71°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F); it also sees around 103 mm (4.1 in) of precipitation over 18 days, contributing to a humidity level of 78%. In contrast, March boasts cooler temperatures, with a minimum of 14°C (58°F), averaging 27°C (80°F), and also reaching highs of 37°C (98°F). The month experiences only 8 mm (0.3 in) of precipitation on just 1 day and has a lower humidity level of 69%. For more details on this month's weather patterns, you can visit San Diego weather in March.
When comparing the weather in April and August, notable differences emerge. August typically experiences warmer temperatures, with an average of 28°C (83°F) and highs reaching up to 37°C (99°F). In contrast, April has a slightly lower average of 28°C (84°F), but its maximum temperatures can soar to 40°C (104°F), making it feel less comfortable at times. Precipitation levels in August are significantly higher, with 103 mm (4.1 in) over 18 days, while April sees much less rain, totaling only 26 mm (1.0 in) on 5 days. Humidity also varies, as August tends to be more humid at 78%, compared to April’s 64%. For more details, you can check San Diego weather in April.
August and May present distinctly different weather patterns, with both months characterized by warm temperatures. In August, temperatures range from a minimum of 21°C (71°F) to a maximum of 37°C (99°F), with an average of 28°C (83°F). The month experiences significant rainfall, receiving 103 mm (4.1 in) over approximately 18 days and higher humidity at 78%. In contrast, May boasts slightly lower temperatures, with a minimum of 18°C (65°F) and a maximum of 39°C (102°F), averaging at 29°C (85°F). Furthermore, it has much less precipitation at 54 mm (2.1 in) for only 9 days, accompanied by a lower humidity level of 63%. For more specific insights, you can check out San Diego weather in May.
In comparing the weather between June and August, both months feature similar average temperatures around 28°C (83°F). However, June tends to be slightly warmer at its minimum and maximum temperatures, with a low of 22°C (72°F) and a high of 38°C (101°F). In contrast, August starts off a degree cooler with a minimum of 21°C (71°F) and peaks at 37°C (99°F). Regarding precipitation, June experiences significantly more rain, with 192 mm (7.5 in) falling over 17 days compared to August's 103 mm (4.1 in) over 18 days. Additionally, August is notably more humid, averaging 78%, while June's humidity sits at a lower 62%. For more detailed insights, you can check San Diego weather in June.
In comparing the weather between July and August, we see some notable differences. July typically experiences slightly warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 38°C (100°F), while August has a minimum of 21°C (71°F) and a maximum of 37°C (99°F). Both months have the same average temperature of 28°C (83°F). However, August is marked by higher humidity at 78% compared to July's 65%, making it feel a bit muggier. Additionally, August sees increased rainfall, with 103 mm (4.1 in) over 18 days, compared to July’s 68 mm (2.7 in) over 14 days. For more details on July weather, feel free to check out San Diego weather in July.
When comparing the weather in August and September, both months share similar average temperatures, with August having a minimum of 21°C (71°F) and a maximum of 37°C (99°F), while September's minimum slightly edges up to 22°C (71°F) and a maximum of 37°C (98°F). Precipitation increases in September, totaling 128 mm (5.0 in) over 21 days, compared to August's 103 mm (4.1 in) over 18 days. Additionally, humidity levels rise in September to 85%, up from 78% in August, contributing to a more humid feel as the transition from summer to fall occurs. For more detailed insights, you can check San Diego weather in September.
In August, temperatures typically range from a minimum of 21°C (71°F) to a scorching maximum of 37°C (99°F), with an average of 28°C (83°F). The month sees significant rainfall, averaging 103 mm (4.1 in) over 18 days, and humidity levels hover around 78%. In contrast, October brings slightly cooler temperatures, with a minimum of 16°C (62°F) and a maximum of 36°C (97°F), resulting in an average temperature of 27°C (80°F). Precipitation increases to 129 mm (5.1 in) spread across 21 days, and humidity rises to 87%. For more detailed insights into October weather, check out San Diego weather in October.
In comparing the weather between August and November, August tends to be significantly warmer, with average temperatures around 28°C (83°F) and maximums reaching up to 37°C (99°F). It's a more humid month as well, with humidity levels at 78% and considerable rainfall of 103 mm (4.1 in) over 18 days. In contrast, November offers a cooler climate with average temperatures dropping to 25°C (77°F) and maximums of 34°C (93°F). While it still has high humidity at 88%, precipitation is lower in November, totaling 53 mm (2.1 in) over just 11 days. For more details on November weather, you can check San Diego weather in November.
In August, the weather is significantly warmer and more humid compared to December, with average temperatures reaching 28°C (83°F) and a maximum of 37°C (99°F). The month sees frequent rain, with 103 mm (4.1 in) of precipitation spread over 18 days, resulting in a humidity level of 78%. In contrast, December enjoys milder temperatures, with an average of 24°C (75°F) and a maximum of 34°C (93°F). The precipitation drops to just 25 mm (1.0 in) across only 5 days, although humidity is slightly higher at 88%. For a detailed look at the weather patterns in December, you can visit San Diego weather in December.
August in San Diego brings a notable shift in weather, characterized by warmer temperatures that frequently soar to around 37°C (99°F). Unlike the milder months earlier in the summer, this peak warmth is complemented by higher humidity levels that can reach up to 78%, making it feel even hotter. In addition, August tends to experience increased precipitation, with 18 days of rainfall contributing to a total of 103 mm (4.1 inches). This combination of warmth and moisture sets August apart from the drier, cooler months that precede it, creating a unique climate that can be both vibrant and challenging. For more detailed insights into how August compares to other months, check out San Diego Climate.