Weather in Castro Valley in April
Castro Valley, United States averages a high of 18°C (64.4°F) and low of 8.8°C (47.8°F) in April, with 5 rain days and 11.5 hours of daily sunshine. Travel score: 79.5/100 (Good). The best time to visit Castro Valley is September.
High
18°C64°F
Low
9°C48°F
🌧️
5
rain days
☀️
11.5
hrs/day sunshine
💧
74%
humidity
80— Good
April in Castro Valley is mild and mostly dry — good for most activities.
What are the average temperatures in Castro Valley?
How much does it rain in Castro Valley in April?
Castro Valley receives an average of 36.5mm of rainfall across 5 rainy days in April. The annual total is 505.6mm.
What should I pack for Castro Valley in April?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United States in April?
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