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

What can you expect from the weather in National City during December? This guide provides all the details you need.

In December, National City generally has pleasant temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 19°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 9°C. Typically, this month presents some of the milder temperatures of the year, yet it remains pleasantly warm.

National City in December usually receives moderate rainfall, averaging around 62 mm for the month. It is the wettest month of the year, so an umbrella might come in handy. When we look at the climate data from the last 30 years, we can expect around 7 days of rain.

With around 231 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit National City. January, February, March, April, May, June, July, August, September, October and November typically offer the most optimal weather. In contrast, December tends to have 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 December

Min TemperatureMin Temperature 9°C  
Max TemperatureMax Temperature 19°C  
Chance of RainChance of Rain 23%  
PrecipitationPrecipitation 62 mm  
Rainy daysRainy days 7 days  
HumidityHumidity 64% *  
SunshineSunshine 231 hours *  
Percentage SunshinePercentage Sunshine 74% *  
* Data from: San Diego, the United States of America (6 KM, 4 Miles).

Where to go in the United States of America in December

Find out more about the weather in the United States of America in December 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 December?

For visitors traveling to National City, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling
10/10
Walking
10/10
Camping
4/10
Outdoor sports
10/10

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.