San Diego Weather in July
San Diego in July averages 25°C (77°F) during the day and 19°C (66°F) at night. Minimal rainfall is typical for this time of year.
Rainfall in San Diego in July
Past climate data indicates that roughly a single day will see rain, totalling around 4 mm (0.2 in) for the month. On the rare occasion it rains this month, it usually amounts to very little.
Temperature in San Diego in July
San Diego in July has perfect weather. Days reach 25°C (77°F) and nights cool to 19°C (66°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in San Diego in July
Enjoy a sunny month with about 304 hours of sunshine, the clear skies make San Diego even more beautiful.If you favor pleasant temperatures and minimal rainfall, July is one of the best months to visit San Diego.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Diego's climate page.
San Diego Temperature in July
Min Temperature
19°C (66°F)
Max Temperature
25°C (77°F)
Chance of Rain
3%
Precipitation
4 mm (0.2 in)
Rainy days
a single day
Humidity
75%
Sunshine
304 hours
Percentage Sunshine
70%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Diego typically stay consistent throughout July, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for San Diego in July
Browse day-by-day weather records for San Diego spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Diego historical weather extremes in July
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in San Diego.
- The warmest day in July was on July 1, 1985, with a maximum of 34°C (93°F).
- San Diego experienced its chilliest July day on July 8, 2010, reaching only 18°C (64°F).
- The lowest overnight temperature recorded in July was 15°C (59°F) (July 1, 1991).
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Diego in July
Comfortable temperatures call for an easy wardrobe in July. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Diego in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Diego's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Diego climate overview or explore weather in the United States of America.
