August Weather in San Diego, Mexico

Last updated: April 22, 2025

In August, San Diego, Mexico experiences a vibrant summer climate, characterized by maximum temperatures soaring to a toasty 36°C (97°F) and an average of 25°C (76°F). Mornings and evenings can offer a refreshing contrast with minimum temperatures around 16°C (61°F). The month sees 14 days of precipitation, accumulating about 91 mm (3.6 in), which contributes to the high humidity levels averaging 82%. This blend of heat and moisture creates a unique environment, making August both a lively and unpredictable time to visit this coastal paradise.

August Temperature in San Diego

In August, temperatures in San Diego, Mexico, reach a delightful balance, with minimums around 16°C (61°F) and averages peaking at 25°C (76°F), providing a comfortable environment for outdoor activities. As the month progresses, daytime highs can soar to 36°C (97°F), reflecting a trend of increasing warmth that starts to build in the summer months. This increase in temperature from the cooler winter months illustrates the region's shift into its hottest season, where mild evenings offer a pleasant escape from the daytime heat. Overall, August provides a vibrant atmosphere, perfect for soaking in the sun and enjoying the lively coastal scene, making it an ideal month for visitors and locals alike.

August Weather in San Diego: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec707274787975767675747270
Data source: Temperature data for San Diego 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.

August Precipitation in San Diego

In August, San Diego, Mexico, experiences a significant increase in precipitation, recording 91 mm (3.6 in) over 14 days. This notable rainfall marks a transition into the wetter season, following the heavier downpours of June and September, which contribute to the area's climate pattern. The August totals showcase a slight rise from July's 42 mm (1.6 in), indicating that the summer monsoon influences the region, leading to more frequent and intense showers. As locals and visitors alike enjoy the lush scenery brought about by this rainfall, the month's precipitation serves as a reminder of the vibrant yet variable weather that defines San Diego's summer landscape.

August Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec85511881834292156134318
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Diego

August in San Diego, Mexico, marks a peak in humidity, reaching 82%, a notable rise from the 75% of July. This trend reflects a gradual escalation in moisture levels as summer progresses, with humidity consistently increasing from the 57% recorded in April. The months of August and September maintain this elevated level of 82%, creating a tropical ambiance that contrasts sharply with the drier spring months. As the year wanes, humidity remains relatively high through October at 83%, before it gently tapers off into the cooler fall season. This pattern highlights a distinct seasonal rhythm, inviting visitors to embrace the lush, warm environment during late summer.

August Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Diego

In August, San Diego experiences a UV Index of 14, categorizing it under extreme exposure, where the risk of harm from unprotected sun exposure is significant. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to take precautions. This month is part of a broader trend observed from January to October, where the UV Index consistently hits extreme levels of 13 to 15, limiting safe sun exposure to mere minutes. Following a brief dip in the fall, with lower indices in November and December, the summer months demand heightened vigilance against sun damage. For more detailed information on UV exposure and safety tips, check out San Diego UV Index.

Maximum UV Index Levels in San Diego for August

The chart shows the monthly maximum UV Index (UVI) for San Diego in August, 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.
JanFebMarAprMayJunJulAugSepOctNovDec10131415141415141413109
Data source: San Diego August 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.

August Sunshine in San Diego

August in San Diego, Mexico, offers a delightful blend of sunshine, boasting an impressive 318 hours of bright days that perfectly complement the summer vibes. This month sits comfortably among the sunniest periods of the year, following a lively July with 329 hours of sunlight. As we transition from the peak summer heat into early fall, August's sunshine is just slightly lower than the heights of July, but it remains significantly higher than the winter months that average around 252 to 287 hours. Notably, this trend reflects a consistent warmth and brightness throughout the summer, making San Diego an ideal destination for those seeking sun-soaked adventures before the cooler days of September and October arrive. With the inviting rays of August, this coastal gem continues to shine brightly, captivating both locals and visitors alike.

Monthly Sunshine Duration in San Diego: August Highlighted

The August sunshine duration represents the total number of hours San Diego experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec252h287h324h314h314h278h329h318h293h295h304h316h
Data source: San Diego August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Diego During August

In San Diego, Mexico, the weather in August presents a notable dip in the chances of sunny days, with only a 21% likelihood for clear skies. This trend follows a gradual decline in sunshine from the spring months, where March enjoys a healthy 77% chance of sun, down to the summer's June and July, which plummet to 18% and 26% respectively. August's weather marks a continuation of this pattern, overshadowed by increasing cloudiness as the year progresses. However, as autumn approaches, the likelihood of sun begins to rebound, hinting that while August may not be the sunniest month, hope still shines for clearer days ahead.

Percentage of Sunny Days in August in San Diego

The chart illustrates the percentage of sunny days in San Diego throughout the year, with August 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 San Diego experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec54%79%77%55%35%18%26%21%23%42%54%71%
Data source: San Diego August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Diego in August

In August, San Diego, Mexico, experiences around 12 hours of daylight, consistent with the previous months of June and July. This mid-year peak in daylight reflects a larger trend where daylight duration gradually increases from January to June, peaking at 13 hours in June, before tapering off towards autumn. As summer wanes, the daylight remains stable at 12 hours throughout August and September, creating an ideal environment for both locals and visitors to enjoy outdoor activities. This steady rhythm of daylight showcases the enchanting climate of San Diego, where sunshine is abundant, especially during these vibrant summer months.

Average Daylight Hours in San Diego for August

The chart illustrates the variation in daylight duration in San Diego throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 17m11h 37m12h 2m12h 29m12h 51m13h 2m12h 56m12h 37m12h 11m11h 44m11h 22m11h 11m
Data source: San Diego daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in San Diego

In August, San Diego experiences a gentle breeze with an average wind speed of 1.6 m/s (4 mph), a slight dip from the stronger currents seen in the earlier months. This drop is part of a broader trend observed during the summer, where wind speeds tend to soften, contrasting the nippier gusts typical of spring and fall. Interestingly, the summer's peak wind speed occurs in March, followed closely by a recovery in the late fall, particularly in November when averages rise to 2.4 m/s (5 mph). Overall, the transition from the brisk winds of winter to the calmer days of summer offers a unique and serene atmosphere, making San Diego a perfect spot to enjoy the soothing August winds.

Average August Wind Speed in San Diego

The chart displays monthly wind speed patterns in San Diego, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.32.62.21.81.22.31.6 m/s1.21.52.42.2
Data source: San Diego August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in San Diego Compares to Other Months

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 tends to be much warmer, with temperatures ranging from a minimum of 16°C (61°F) to a scorching maximum of 36°C (97°F) and an average of 25°C (76°F). The month also sees higher humidity at 82% and significant precipitation, totaling 91 mm (3.6 in) over about 14 days. In contrast, January experiences milder conditions, with a minimum temperature of 10°C (50°F) and a maximum of 33°C (93°F), averaging 21°C (70°F). Rainfall is considerably lower in January, with just 8 mm (0.3 in) recorded on only one day, and humidity decreases slightly to 76%. For more details, you can check San Diego weather in January.

August and February present quite contrasting weather conditions. In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 36°C (97°F), with an average of 25°C (76°F). The month is characterized by high humidity at 82%, along with significant precipitation, totaling 91 mm (3.6 in) over about 14 days. In contrast, February sees milder temperatures, with a minimum of 10°C (50°F) and a maximum of 35°C (96°F), averaging at 22°C (72°F). The humidity is lower at 68%, and there is minimal rainfall, with only 5 mm (0.2 in) occurring over just one day. For more detailed information, check out San Diego weather in February.

August experiences warmer average temperatures, ranging from a minimum of 16°C (61°F) to a peak of 36°C (97°F), with high humidity levels at 82%. In contrast, March offers slightly cooler weather, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 36°C (96°F) and a more moderate humidity of 59%. Additionally, August sees significantly more precipitation, with 91 mm (3.6 in) over 14 days, while March is much drier, recording only 5 mm (0.2 in) across just one day. For a closer look at March weather, you can visit San Diego weather in March.

When comparing the weather in August and April, we see notable differences. August tends to be warmer, with average temperatures around 25°C (76°F) and maximums reaching up to 36°C (97°F), while April also has an average of 25°C but can peak at a slightly higher 37°C (99°F). Despite similar averages, August is characterized by higher humidity at 82%, compared to April's more comfortable 57%. Additionally, August experiences more significant precipitation, with 91 mm (3.6 in) over 14 days, in stark contrast to April's mild 11 mm (0.4 in) over just 2 days. For further details, you can check out the specific San Diego weather in April.

When comparing the weather in August and May, we notice some intriguing similarities and differences. August boasts a slightly lower average temperature of 25°C (76°F) compared to May's 26°C (79°F), while both months experience similar maximum temperatures, with May reaching up to 37°C (99°F) and August peaking at 36°C (97°F). Both months also receive comparable amounts of precipitation, with 91 mm (3.6 in) in August and 88 mm (3.5 in) in May, each experiencing rainfall on about 14 days. However, a notable contrast is the humidity level: August is significantly more humid at 82%, while May feels drier with only 65% humidity. For more detailed insights, you can refer to San Diego weather in May.

When comparing the weather in August and June, we see some notable differences. August typically has a minimum temperature of 16°C (61°F) and an average of 25°C (76°F), with a maximum reaching up to 36°C (97°F). In contrast, June starts with slightly higher minimum temperatures at 17°C (63°F) and an average of 24°C (76°F), peaking at 35°C (95°F). Precipitation is also significantly different; August receives 91 mm (3.6 in) over about 14 days, whereas June experiences a much wetter environment with 183 mm (7.2 in) across 20 days. Lastly, August boasts higher humidity levels at 82%, compared to June's 66%. For more detailed insights about June weather, you can visit San Diego weather in June.

In comparing the weather between July and August, we see noticeable differences in both temperature and precipitation. August experiences slightly warmer temperatures, with a minimum of 16°C, an average of 25°C, and a maximum reaching 36°C. In contrast, July's temperatures align closely but are generally a degree cooler, with a maximum of 35°C. Moreover, August is significantly wetter, recording 91 mm of precipitation over 14 days, compared to July's 42 mm over just 6 days. The humidity is higher in August as well, averaging 82% compared to July's 75%. For more detailed insights into July's weather, visit San Diego weather in July.

In August, temperatures range from a minimum of 16°C (61°F) to a maximum of 36°C (97°F), with an average of 25°C (76°F). This month experiences 91 mm (3.6 in) of precipitation over 14 days, all while maintaining a consistent humidity level of 82%. In contrast, September sees slightly cooler temperatures, with a minimum of 16°C (61°F), an average of 24°C (75°F), and a maximum of 33°C (92°F). However, it is notably wetter, receiving 156 mm (6.2 in) of rainfall over 19 days, while also keeping humidity steady at 82%. For more insights, you can check San Diego weather in September.

In comparing the weather between August and October, we see some notable differences and similarities. August tends to be hotter, with average temperatures peaking at 25°C (76°F) and reaching a maximum of 36°C (97°F). In contrast, October experiences slightly cooler average temperatures of 23°C (74°F), with a maximum of 34°C (93°F).

Precipitation levels also vary, with October receiving more rain at 134 mm (5.3 in) over 15 days compared to August's 91 mm (3.6 in) over 14 days. Humidity remains quite consistent between the two months, with August at 82% and October slightly higher at 83%. For a more detailed look at what to expect, visit San Diego weather in October.

August weather is characterized by hotter temperatures, with a minimum of 16°C (61°F), an average of 25°C (76°F), and a maximum reaching up to 36°C (97°F). It also tends to be quite humid at 82%, with precipitation occurring on 14 days and totaling 91 mm (3.6 in). In contrast, November brings cooler temperatures, with a minimum of 13°C (55°F), an average of 22°C (72°F), and a maximum of 33°C (91°F). The month is relatively drier, featuring only 31 mm (1.2 in) of precipitation over about 5 days and maintaining a slightly lower humidity at 80%. For more details, you can check San Diego weather in November.

In August, the weather tends to be quite warm and humid, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 36°C (97°F) and an average temperature of 25°C (76°F). This month experiences significant rainfall, with 91 mm (3.6 in) spread over about 14 days, contributing to a humidity level of 82%.

In contrast, December offers a milder climate, with temperatures peaking at 32°C (90°F) and dipping to a minimum of 10°C (51°F), resulting in a pleasant average of 21°C (71°F). Rainfall is considerably lower, reaching just 8 mm (0.3 in) over 2 days, and the humidity is slightly lower at 76%. For more details, check out San Diego weather in December.

Compare San Diego's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in San Diego

As August rolls in, San Diego experiences a unique blend of warmth and humidity, setting it apart from the milder months that precede it. With daily highs reaching up to 36°C (97°F) and evenings that cool down to a comfortable 16°C (61°F), residents and visitors alike enjoy a vibrant summer atmosphere. However, this month also sees an uptick in rainfall, with around 91 mm (3.6 in) of precipitation spread across about 14 days, adding a refreshing twist to the otherwise warm climate. This combination of elevated temperatures and humidity, coupled with sporadic rain, highlights August as a transitional period before the cooler fall months arrive. For those seeking more details on the year-round weather patterns, be sure to check San Diego Climate.