Weather in San Mateo in October
San Mateo, United States averages a high of 21.5°C (70.7°F) and low of 12.9°C (55.2°F) in October, with 3 rain days and 10 hours of daily sunshine. Travel score: 88.4/100 (Excellent). The best time to visit San Mateo is September.
High
22°C71°F
Low
13°C55°F
🌧️
3
rain days
☀️
10
hrs/day sunshine
💧
73%
humidity
88— Excellent
October in San Mateo is mild and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Mateo?
How much does it rain in San Mateo in October?
San Mateo receives an average of 24mm of rainfall across 3 rainy days in October. The annual total is 510.8mm.
What should I pack for San Mateo in October?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 22°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in October?
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