Weather in San Mateo in April
San Mateo, United States averages a high of 17.2°C (63°F) and low of 9.3°C (48.7°F) in April, with 5 rain days and 11.5 hours of daily sunshine. Travel score: 77.8/100 (Good). The best time to visit San Mateo is September.
High
17°C63°F
Low
9°C49°F
🌧️
5
rain days
☀️
11.5
hrs/day sunshine
💧
76%
humidity
78— Good
April in San Mateo is mild and mostly dry — good for most activities.
What are the average temperatures in San Mateo?
How much does it rain in San Mateo in April?
San Mateo receives an average of 39.8mm of rainfall across 5 rainy days in April. The annual total is 510.8mm.
What should I pack for San Mateo in April?
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 April?
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