San Diego Weather in October
San Diego in October averages 25°C (77°F) during the day and 16°C (61°F) at night. Minimal rainfall is typical for this time of year.
Rainfall in San Diego in October
Historically, approximately 4 days this month are expected to have rain, averaging 13 mm (0.5 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in San Diego in October
San Diego has excellent weather in October, with days reaching 25°C (77°F) and nights cooling to 16°C (61°F). Overall, the month follows a fairly predictable daily temperature pattern. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in San Diego in October
Enjoy a sunny month with about 243 hours of sunshine, the clear skies make San Diego even more beautiful.If you favor pleasant temperatures and minimal rainfall, October 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 October
Min Temperature
16°C (61°F)
Max Temperature
25°C (77°F)
Chance of Rain
12%
Precipitation
13 mm (0.5 in)
Rainy days
4 days
Humidity
70%
Sunshine
243 hours
Percentage Sunshine
69%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Diego typically stay consistent throughout October, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).
Average temperatures in October
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 October
Historical weather for San Diego in October
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 October
According to our 49 years of weather records for San Diego, the following extremes were recorded between 1976 and 2025.
- The warmest day in October was on October 3, 1987, with a maximum of 38°C (100°F).
- On October 27, 2000, San Diego saw its coldest October day with temperatures maxing out at 17°C (63°F).
- San Diego registered its coldest October night on October 31, 2019, with temperatures dropping to 9°C (48°F).
Best Places in the United States of America in October
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 October →
perfect weather
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What to Wear in San Diego in October
Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Diego in October
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.
