What to Wear in San Diego in Fall: Month-by-Month Outfit Guide
San Diego in fall sits in the 70 to 80°F range. This is the layer-by-layer outfit guide for San Diego's fall weather — what to wear, what to pack for a visit, and the local context that shapes the recommendations.
WHAT TO EXPECT
San Diego in fall — September, October, November. October through November. 70-80°F. Often the warmest months due to Santa Ana winds. The temperature range is the headline; what you actually feel depends on humidity, wind, and what indoor spaces you'll cycle through.
THE FOUNDATION LAYER
Lightweight, breathable single layer. Linen, cotton voile, or technical synthetic.
THE MID LAYER
Skip it. San Diego fall doesn't need a mid layer.
THE OUTERWEAR
None. The "outer layer" in San Diego in fall is air conditioning. Carry a light wrap or button-down for over-AC restaurants.
ACCESSORIES
Sun hat, UV-rated sunglasses, sandals or breathable sneakers, and a light scarf for over-AC interiors.
WHAT TO PACK FOR A TRIP TO SAN DIEGO IN FALL
Three layer permutations covering the 70 to 80°F range, plus accessories. If your trip spans the season's edge (late August or early December), pack toward the cooler end of the range — overestimating warmth is easier to recover from than underestimating.
LOCAL CONTEXT
Coastal vs. inland temperature differences are dramatic — La Jolla can be 15°F cooler than El Cajon. Evening drops in any season — always carry a sweater.