Weather in National City in September
National City, United States averages a high of 25.3°C (77.5°F) and low of 17.9°C (64.2°F) in September, with 1 rain days and 11.4 hours of daily sunshine. Travel score: 93.3/100 (Excellent). The best time to visit National City is July.
High
25°C78°F
Low
18°C64°F
🌧️
1
rain days
☀️
11.4
hrs/day sunshine
💧
76%
humidity
93— Excellent
September in National City is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in National City?
How much does it rain in National City in September?
National City receives an average of 6.9mm of rainfall across 1 rainy days in September. The annual total is 298.1mm.
What should I pack for National City in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 25°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
🎉Visiting United States in September?
Don't miss any public holidays — check before you book!
Compare National City
Popular comparisons:
How can I plan my trip to National City?
What other cities are near National City?
What are other popular cities in United States?
What is the weather like in other months in National City?
Data based on 1994–2024 averages · Last updated: 2024-12-31