San Diego in September
Great time to visit
September might be San Diego's secret best month. You get August's great weather with July's crowds finally thinning out.
Weather
September brings San Diego's most reliable weather with highs around 27°C and lows near 20°C. The marine layer largely disappears, giving you consistent sunshine from morning to night. Ocean temperatures remain warm from August's heat.
27°C high20°C low0 rain days
Crowds & Cost
high crowds
~$230/day average
Events & Festivals
- •Kaaboo Del Mar music festival
- •Fleet Week
- •Oktoberfest celebrations begin
September Tips
- •This is actually San Diego's best weather month – warm but not crowded
- •Labor Day weekend is the last major crowd surge
- •Perfect conditions for hiking in Torrey Pines and Cabrillo
All Months
April through October delivers San Diego's legendary weather. Temperatures hover between 65-75°F with minimal rain. But these are also peak tourist months with higher prices and crowds.
Summer (June-August) means perfect beach weather but also Comic-Con in July, which books up hotels citywide. Hotel rates spike to $300+ per night during the convention.
Fall (September-November) might be the sweet spot. Ocean temperatures peak in September, crowds thin out after Labor Day, and hotel prices drop 20-30%.
Winter brings the city's only real rain, mostly January and February. But temperatures still hit 65°F most days. Hotel rates drop to their lowest, sometimes under $150/night downtown.
Spring (March-May) offers great weather with wildflower blooms in the desert areas. Baseball season starts, and the city feels energized.
Avoid visiting during major conventions like Comic-Con (July) or the Rock 'n' Roll Marathon (June) unless you're participating. Everything books up and prices double.
San Diego Scores
Solo
8/10
Couples
8/10
Families
10/10
Adventure
7/10
Budget
6/10
Luxury
8/10
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