September in San Jose, CA: peak season for golf — great conditions and a wide playing window. Best tee times: morning before noon for the most comfortable round.
| Average September Weather | |
|---|---|
| Avg daily high | 84°F |
| Avg daily low | 59°F |
| Rainy days | 4 / mo |
| Avg peak wind | 13 mph |
Based on 10 years of climate data (2015–2024), September in San Jose, CA averages 84°F highs and 59°F lows. Expect about 4 days with measurable precipitation and peak winds averaging 13 mph. Our playability scoring treats wind under 8 mph as ideal, temperatures of 60–80°F as optimal, and rain probability below 20% as a green light — use these averages to gauge how often September hits those thresholds.
For San Jose in September, plan to morning before noon for the most comfortable round. Wind typically rises through the afternoon as thermal mixing builds, so earlier rounds tend to score higher on our playability scale.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for San Jose, CA for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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