Weather in San Rafael in September
San Rafael, United States averages a high of 24°C (75.2°F) and low of 13.2°C (55.8°F) in September, with 1 rain days and 11.6 hours of daily sunshine. Travel score: 93.4/100 (Excellent). The best time to visit San Rafael is September.
High
24°C75°F
Low
13°C56°F
🌧️
1
rain days
☀️
11.6
hrs/day sunshine
💧
72%
humidity
93— Excellent
September in San Rafael is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Rafael?
How much does it rain in San Rafael in September?
San Rafael receives an average of 3.1mm of rainfall across 1 rainy days in September. The annual total is 594.9mm.
What should I pack for San Rafael in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31