Weather in Napa in August
Napa, United States averages a high of 30.3°C (86.5°F) and low of 14.5°C (58.1°F) in August, with 0 rain days and 12.7 hours of daily sunshine. Travel score: 99.1/100 (Excellent). The best time to visit Napa is July.
High
30°C87°F
Low
15°C58°F
🌧️
0
rain days
☀️
12.7
hrs/day sunshine
💧
62%
humidity
99— Excellent
August in Napa is hot and dry — excellent conditions for exploring.
What are the average temperatures in Napa?
How much does it rain in Napa in August?
Napa receives an average of 0.9mm of rainfall across 0 rainy days in August. The annual total is 608.5mm.
What should I pack for Napa in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 30°C
🧢
Sun hat or cap
Protection from intense sun
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Evening jacket or cardigan
Temperature drops 16°C from day to night
Traveling to United States in August?
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