FallGood time to go ~84°F highs

Things to do in San Jose in September

September is a good month to visit San Jose, with average highs around 84°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

1Foliage walks

Pinnacles National Park

national park in California, United States of America

Oldest Light Bulb

world's longest-lasting light bulb

Winchester Mystery House

Mansion in San Jose, California.

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Also great in September in California

San Francisco

San Jose in September: quick answers

Is September a good time to visit San Jose?

September is a good month to visit San Jose, with average highs around 84°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in San Jose in September?

Average daytime highs are around 84°F, compared with 84°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in San Jose in September?

Top picks for September: Pinnacles National Park, Oldest Light Bulb, Winchester Mystery House, Computer History Museum, Monterey Bay Aquarium.