Weather

San Diego Weather in October

San Diego in October transitions into cooler weather while maintaining its signature mildness. With average highs of 66°F and lows of 53°F, October offers a comfortable climate perfect for exploring San Diego's festivals and attractions.

by Mac Douglass

Updated March 14, 2025

What Is the Weather Like in San Diego in October?

October weather in San Diego features mild, sunny days and cooler evenings. Average highs reach 66°F (19°C), providing comfortable conditions for outdoor activities, while lows dip to 53°F (12°C), making light jackets or sweaters ideal for nighttime outings.

Rainfall averages 1.81 inches over seven days, signaling a slight increase in precipitation compared to the drier summer months.

Average October Weather in San Diego

San Diego's October weather features mild highs around 66°F and cooler lows near 53°F, with increasing rainfall perfect for seasonal activities and Halloween festivities. Data from WeatherSpark.

Daytime Temperatures: Highs average 66°F, ideal for daytime activities.
Nighttime Temperatures: Lows average 53°F, requiring light layers for evening outings.
Rainfall: Rainfall averages 1.81 inches, spread across seven days.
Ocean Temperatures: Cooling waters signal the end of peak beach season but remain inviting for surfers and those willing to brave cooler swims.

October San Diego Weather Compared to Other Months

Month	Average High (°F)	Average Low (°F)	Days with Precipitation	Hours of Sunshine	Average Precipitation (in)
January	65	48	6	217	1.53
February	76	65	1	255	0.15
March	73	61	3	234	0.57
April	69	54	4	236	1.01
May	76	67	0	277	0.02
June	75	65	0	293	0.03
July	71	62	1	253	0.07
August	69	59	2	261	0.12
September	67	56	5	242	0.78
October	66	53	7	262	1.81
November	65	51	7	212	2.27
December	65	49	7	216	1.98

San Diego’s weather in October is cooler than September but still provides plenty of sunshine for outdoor events.

Compared to November, which averages highs of 65°F and lows of 51°F, October is slightly warmer, making it an excellent choice for travelers in the fall.

Things to Do in San Diego in October

October’s weather sets the stage for diverse events, from family-friendly Halloween celebrations to cultural festivals.

Kids Free San Diego (October 1-31): Enjoy free admission for kids at museums, attractions, and activities across the city.
San Diego Spirits Festival (October 19-20): Indulge in world-class spirits and cocktails while exploring over 60 brands.
HalGLOWeen at the San Diego Zoo (October 3-31): Bring the family for light displays, costumes, and seasonal fun.
La Mesa Oktoberfest (October 4-6): Savor German beer, bratwurst, and live music at this festive event.
Halloween Happenings (Through October 31): From haunted tours to trick-or-treating, enjoy Halloween festivities for all ages.

Why Visit San Diego in October?

October in San Diego combines pleasant weather, fewer crowds, and a packed calendar of events. Highlights include:

Cooler temperatures for outdoor adventures and sightseeing.
Unique seasonal activities like pumpkin patches, Oktoberfest celebrations, and Halloween events.
Family-friendly attractions with Kids Free San Diego deals.

Plan Your Trip Around the October Weather in San Diego, California

October’s blend of mild weather, cultural celebrations, and spooky festivities makes it one of the most exciting months to visit San Diego. Whether you're exploring the city with kids, indulging in seasonal treats, or enjoying local art and music, October offers something for everyone.