Weather in San Jose in September
San Jose, United States averages a high of 27.8°C (82°F) and low of 15.4°C (59.7°F) in September, with 1 rain days and 11.7 hours of daily sunshine. Travel score: 98.9/100 (Excellent). The best time to visit San Jose is July.
High
28°C82°F
Low
15°C60°F
🌧️
1
rain days
☀️
11.7
hrs/day sunshine
💧
61%
humidity
99— Excellent
September in San Jose is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Jose?
How much does it rain in San Jose in September?
San Jose receives an average of 3.6mm of rainfall across 1 rainy days in September. The annual total is 596.3mm.
What should I pack for San Jose in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 12°C from day to night
🎉Visiting United States in September?
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Data based on 1994–2024 averages · Last updated: 2024-12-31