Weather in San Marcos in January
San Marcos, United States averages a high of 17.2°C (63°F) and low of 6.2°C (43.2°F) in January, with 6 rain days and 8.9 hours of daily sunshine. Travel score: 75.3/100 (Good). The best time to visit San Marcos is August.
High
17°C63°F
Low
6°C43°F
🌧️
6
rain days
☀️
8.9
hrs/day sunshine
💧
72%
humidity
75— Good
January in San Marcos is mild and mostly dry — good for most activities.
What are the average temperatures in San Marcos?
How much does it rain in San Marcos in January?
San Marcos receives an average of 67.2mm of rainfall across 6 rainy days in January. The annual total is 354.1mm.
What should I pack for San Marcos in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 17°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting United States in January?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31