July Weather in San Diego, Mexico

Last updated: April 22, 2025

July in San Diego, Mexico, offers a warm tropical climate, with maximum temperatures reaching up to 35°C (95°F) and a comfortable average of 24°C (76°F). Visitors can expect mild evenings with minimum temperatures around 16°C (61°F). While the month experiences occasional rain, accumulating approximately 42 mm (1.6 in) of precipitation over 6 days, the overall humidity levels hover around 75%, contributing to a lively yet breezy atmosphere perfect for exploration. Embrace the summer vibes and soak up the sun in this vibrant coastal destination!

July Temperature in San Diego

In July, San Diego, Mexico, experiences warm and inviting temperatures that perfectly embody the essence of summer. With a minimum temperature of 16°C (61°F) and a maximum of 35°C (95°F), the weather is comfortably warm, making it ideal for leisurely beach days and outdoor activities. The average temperature hovers around a pleasant 24°C (76°F), reminiscent of the preceding months, where temperatures gradually rise from the cooler winter months. This trend of increasing warmth culminates in July, reflecting the consistent warmth that characterizes the region as it transitions into the peak of summer. As the month unfolds, visitors can expect plenty of sunshine and a welcoming atmosphere, perfect for basking in the coastal charm of San Diego.

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

The chart illustrates July 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.

July Precipitation in San Diego

In July, San Diego, Mexico experiences a notable shift in precipitation patterns, receiving approximately 42 mm (1.6 in) of rain over 6 days. This marks a decrease from the wet June, which recorded a substantial 183 mm (7.2 in) across 20 days. The rainfall in July signifies the transition into the summer months, where moisture continues but with short bursts rather than the prolonged downpours seen earlier. Following this trend, the region gears up for an even more substantial August, historically one of the wettest months, showcasing the dynamic climate that characterizes San Diego throughout the rainy season. The alternating patterns of precipitation hint at the intricate relationship between seasonal shifts and local weather, reinforcing the importance of July as a bridge from the heavy rains of early summer to the drier, yet still humid, late summer periods.

July Precipitation Trends in San Diego

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

In July, San Diego, Mexico, experiences a notable rise in humidity, reaching 75%, which is a slight increase from June's 66%. This mid-summer month represents a pivotal point in the yearly humidity trend, as the region transitions into the more humid late summer and early fall. Following July, August and September see even higher levels, with humidity peaking at 82%. Interestingly, the humidity generally decreases from November through April, hovering around the mid to upper 50s before gradually climbing again in late spring. This cyclical pattern highlights the region's comfortable, albeit humid, summer climate that many locals and visitors find appealing.

July Average Humidity in San Diego

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

July UV Index in San Diego

As summer peaks in July, San Diego, Mexico experiences an extreme UV Index of 15, marking a notable trend in the region's fierce sun exposure. This reading indicates just 10 minutes of safe sun exposure before skin damage can occur. This pattern is consistent with the high levels seen from February to June, where an extreme UV Index frequently made outdoor activities more risky without adequate sun protection. As the month culminates, it’s critical to stay vigilant, particularly as conditions remain similar through August and September. For those seeking to explore San Diego’s sunny allure, understanding these UV levels is essential to enjoy the beautiful weather safely. For more detailed information, check out the San Diego UV Index.

Maximum UV Index Levels in San Diego for July

The chart shows the monthly maximum UV Index (UVI) for San Diego in July, 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 July 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.

July Sunshine in San Diego

July is truly the crown jewel of sunshine in San Diego, Mexico, boasting a remarkable 329 hours of glorious sunlight. This peak in summer radiance follows a gradual upward trend from the earlier months, where January starts with 252 hours and steadily climbs to 278 hours by June. The warmth of July not only outshines its predecessors but also sets a vibrant tone for August, which remains sun-drenched with 318 hours. This trend highlights San Diego's beautiful climate, perfect for enjoying the great outdoors, hosting beach parties, or simply soaking up the sun’s warmth during the heart of summer. As you plan your summer getaway, you’ll find that this coastal paradise offers abundant sunshine, inviting you to bask in its brilliance.

Monthly Sunshine Duration in San Diego: July Highlighted

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

Chance of Sun in San Diego During July

In San Diego, Mexico, the likelihood of sunny weather in July shows a notable dip, with only a 26% chance of sunshine. This marks a significant decrease from the sunnier months earlier in the year, especially considering the high probabilities seen in February and March, which boast chances of 79% and 77% respectively. As summer unfolds, the chances for clear skies continue to decline through June and further into July, creating a trend of less predictable weather. Despite the allure of warmer temperatures, visitors should prepare for a mix of conditions rather than relying solely on sun-filled days.

Percentage of Sunny Days in July in San Diego

The chart illustrates the percentage of sunny days in San Diego throughout the year, with July 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 July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Diego in July

In San Diego, Mexico, July brings a slight dip in daylight duration, with the sun gracing the skies for about 12 hours each day. This trend follows a peak in June, where daylight lasted a generous 13 hours, showcasing the longest days of the year. As summer unfolds, the amount of daylight remains consistent through August and onward, hovering around the 12-hour mark before gradually decreasing in the fall months. Interestingly, despite the slight reduction, July maintains a vibrant atmosphere, perfect for enjoying outdoor activities and the region's stunning landscapes. With a steady rhythm of daylight throughout the summer, San Diego continues to offer ample opportunities for sun-soaked adventures.

Average Daylight Hours in San Diego for July

The chart illustrates the variation in daylight duration in San Diego throughout the year, with July 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.

July Winds in San Diego

In July, San Diego experiences a refreshing breeze with an average wind speed of 2.3 m/s (5 mph), mirroring the steady winds of the early months of the year. This marks a recovery from the lighter winds of June, where the average dipped to a gentle 1.2 m/s (3 mph), offering a calm respite for beachgoers and outdoor enthusiasts. As we move into the later months, August sees a slight decrease to 1.6 m/s, while September and October continue the trend with even lighter conditions at 1.2 m/s and 1.5 m/s, respectively. However, the return of more consistent winds re-emerges in November, signaling a transition back to breezier days as the year closes. Overall, July's wind holds a sweet spot in San Diego's climatology, providing the perfect balance of comfort and activity.

Average July Wind Speed in San Diego

The chart displays monthly wind speed patterns in San Diego, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.32.62.21.81.22.3 m/s1.61.21.52.42.2
Data source: San Diego July wind data, generated using information from the Copernicus Climate Change Service.

How July 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 July'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 July, the weather is typically warm with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F), averaging around 24°C (76°F). Despite the warmth, July experiences more precipitation, with 42 mm (1.6 in) over roughly six days, along with a high humidity level of 75%.

In contrast, January offers cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 33°C (93°F), averaging 21°C (70°F). This month sees significantly less precipitation, only 8 mm (0.3 in) over just one day, and a similar humidity level of 76%. For a more detailed comparison, you can check San Diego weather in January.

In comparison, July features a much warmer climate with an average temperature of 24°C (76°F) and a maximum reaching up to 35°C (95°F), while February presents a cooler atmosphere with an average of 22°C (72°F) and similar maximum temperatures of 35°C (96°F). July experiences higher humidity levels at 75%, along with more frequent precipitation, averaging 42 mm over 6 days. In contrast, February boasts significantly less rainfall at only 5 mm over just one day and a lower humidity level of 68%. For more detailed information, you can check San Diego weather in February.

In July, temperatures range from a minimum of 16°C (61°F) to a maximum of 35°C (95°F), with an average of 24°C (76°F). The month sees about 42 mm (1.6 in) of precipitation over approximately 6 days, coupled with a higher humidity of 75%. In contrast, March features slightly cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 36°C (96°F), while the average temperature is 23°C (74°F). March experiences significantly less precipitation, totaling just 5 mm (0.2 in) on only 1 day, along with a lower humidity level of 59%. For more detailed information, visit San Diego weather in March.

When comparing the weather in July and April, a few notable differences emerge. July generally has a minimum temperature of 16°C (61°F) and an average of 24°C (76°F), with highs reaching up to 35°C (95°F). The month experiences around 42 mm (1.6 in) of precipitation over 6 days, accompanied by a relatively high humidity of 75%. In contrast, April presents slightly cooler minimum temperatures at 14°C (57°F) and a higher average temperature of 25°C (78°F), with maximum temperatures soaring up to 37°C (99°F). Precipitation in April is significantly lower, totaling only 11 mm (0.4 in) across 2 days, and the humidity is also lower at 57%. For further details, you can check San Diego weather in April.

When comparing the weather in July and May, we see notable differences. July tends to have a milder average temperature, with lows around 16°C (61°F) and an average of 24°C (76°F), while May experiences slightly warmer temperatures, with a minimum of 17°C (62°F) and an average of 26°C (79°F). Interestingly, July features less rainfall, accumulating only 42 mm (1.6 inches) over 6 days, compared to May, which receives 88 mm (3.5 inches) over a longer period with 14 wet days. Additionally, July's humidity is higher at 75%, compared to May's 65%, resulting in a more humid atmosphere despite May being warmer overall. For further insights into May's weather specifics, check out San Diego weather in May.

In comparing the weather between June and July, both months feature a similar average temperature of 24°C (76°F) and a maximum of 35°C (95°F). However, June experiences slightly cooler minimum temperatures at 17°C (63°F), while July starts at a minimum of 16°C (61°F). One of the most significant differences is in precipitation, where June sees a much higher total of 183 mm (7.2 in) over 20 days, compared to July's 42 mm (1.6 in) over just 6 days. Additionally, June has a lower humidity level at 66%, while July is more humid at 75%. For more detailed insights, you can check San Diego weather in June.

In comparing the weather between July and August, both months exhibit warm temperatures, with July averaging 24°C (76°F) and reaching a maximum of 35°C (95°F), while August sees a slight increase to an average of 25°C (76°F) and a peak of 36°C (97°F). July experiences less precipitation at 42 mm (1.6 in) over about 6 days, whereas August is notably wetter, with 91 mm (3.6 in) of rain spread across 14 days. Additionally, humidity levels rise from 75% in July to 82% in August, contributing to a more muggy atmosphere as summer progresses. For a more in-depth look at August weather, check out San Diego weather in August.

In July, the weather is typically warm with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F), accompanied by an average temperature of 24°C (76°F). With a relatively low precipitation of 42 mm (1.6 in) over just 6 days, humidity levels sit at 75%. In contrast, September experiences slightly cooler conditions, with temperatures reaching a minimum of 16°C (61°F), an average of 24°C (75°F), and a maximum of 33°C (92°F). However, September sees a significant increase in precipitation, totaling 156 mm (6.2 in) over 19 rainy days, along with a higher humidity of 82%. For a more detailed comparison, you can check out San Diego weather in September.

In comparing July and October weather, both months feature similar minimum temperatures, with July and October starting at 16°C (61°F). However, July typically has a slightly warmer average temperature of 24°C (76°F) compared to October's average of 23°C (74°F). July also boasts higher maximum temperatures, peaking at 35°C (95°F) versus October's 34°C (93°F). A notable difference is in precipitation: July receives 42 mm (1.6 in) over 6 days, while October sees a significant increase with 134 mm (5.3 in) across 15 days. Additionally, humidity rises from 75% in July to 83% in October, contributing to a more humid environment later in the year. For more details on October weather specifics, check out San Diego weather in October.

In comparing the weather between July and November, it’s clear that July tends to be hotter and more humid. July boasts a minimum temperature of 16°C and can reach a maximum of 35°C, while November sees slightly cooler temperatures ranging from 13°C to a maximum of 33°C. Despite being mid-summer, July experiences a higher average temperature of 24°C compared to November's 22°C. Precipitation is relatively low in both months, with July receiving 42 mm over 6 days and November slightly less at 31 mm over 5 days. Humidity is also higher in November at 80%, compared to July’s 75%. For those considering travel, more detailed information can be found at San Diego weather in November.

In July, the weather is typically warm and humid, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F) and an average of 24°C (76°F). This month sees considerable rainfall, with about 42 mm (1.6 in) of precipitation occurring over 6 days. In contrast, December brings milder temperatures, with a minimum of 10°C (51°F), an average of 21°C (71°F), and a maximum of 32°C (90°F). Rainfall is minimal during this month, totaling only 8 mm (0.3 in) over 2 days, while humidity remains quite consistent at 76%. For more details, you can explore San Diego weather in December.

Compare San Diego's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in San Diego

In July, San Diego experiences its warmest temperatures, with an inviting average hovering around 24°C (76°F) and peak highs reaching up to 35°C (95°F). Unlike other months, the city enjoys a drier climate, with only about 42 mm (1.6 in) of total precipitation spread over just six days, making it perfect for beach outings and outdoor activities. While the humidity is relatively high at 75%, the pleasant ocean breezes help keep things comfortable. Overall, July stands out as a vibrant summer month that invites both locals and visitors to bask in the sun. For more details, check out San Diego Climate.