San Jose in September
Great time to visit
September offers relief from summer's heat while maintaining sunny skies. One of the best months for outdoor activities with manageable crowds and reasonable prices.
Weather
September begins cooling from summer's peak with warm days that feel more manageable. Nights start getting noticeably cooler, providing relief after months of warm evenings. Rain remains absent but temperatures drop to comfortable levels.
28°C high14°C low1 rain days
Crowds & Cost
high crowds
~$180/day average
Events & Festivals
- •Autumn Moon Festival in Chinatown
- •San Jose Jazz Festival
- •Festa Italiana at Discovery Meadow
September Tips
- •Perfect hiking weather returns as heat becomes bearable
- •Pack a light sweater for evening events as temperature swings increase
- •Farmers markets showcase late summer produce at peak quality
All Months
April through June gives you perfect weather without the summer crowds that hit other Bay Area destinations. Temperatures hover in the 70s, and you can actually find parking downtown without circling for 20 minutes.
September through November works just as well. The heat breaks, and fall events like Cinequest Film Festival bring energy to the downtown core. Plus, hotel rates drop after summer travel season ends.
Skip December through March unless you love gray skies and occasional rain. It's not terrible weather, but you're not getting the California sunshine you came for. Summer gets hot – we're talking 85-90 degrees regularly – though evenings cool down nicely.
San Jose Scores
Solo
7/10
Couples
6/10
Families
8/10
Adventure
5/10
Budget
4/10
Luxury
7/10
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