ClimateForecastSeptemberOctober >>

National City weather in September (California, United States of America)

Planning a trip to National City in September? This guide provides all the details you need.

In National City, September is characterized by high temperatures and almost no rainfall. Throughout the day, temperatures typically settle at around 27°C. But by evening, they drop to around 18°C. Often, it stands out as the year's warmest month. With this in mind, cool breathable fabrics will make navigating the heat much more bearable. Always be ready to embrace the warmth while staying cool and protected.

National City in September usually receives almost no rainfall, averaging around 3.1 mm for the month. Rain is expected on roughly 1 day.

With around 253 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit National City. January, February, March, April, May, June, July, August, September, October and November typically offer the best circumstances. While December tends to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized National City climate page with graphs.

 

National City, monthly averages in September

Min TemperatureMin Temperature 18°C  
Max TemperatureMax Temperature 27°C  
Chance of RainChance of Rain 3%  
PrecipitationPrecipitation 3.1 mm  
Rainy daysRainy days 1 day  
HumidityHumidity 74% *  
SunshineSunshine 253 hours *  
Percentage SunshinePercentage Sunshine 68% *  
* Data from: San Diego, the United States of America (6 KM, 4 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in National City in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
10/10
Outdoor sports
8/10

Interested in more climate information?

This site provides you with all the information you need about the climate in National City.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.