South San Francisco weather in September (California, United States of America)

Thinking of visiting South San Francisco in September? Check the weather first! Here’s a detailed forecast of the month’s weather patterns.

Temperatures

The weather in South San Francisco during September is typically perfect, with high temperatures and almost no rainfall. The daytime often sees temperatures reaching 23°C, but nighttime brings a cool-down to 13°C. On average, it sees the highest temps of the year.

Precipitation

South San Francisco in September usually receives almost no rainfall, averaging around 3.7 mm for the month. The climate data from previous years indicates that there are typically about a single day days of rain.

Average sunshine

There are approximately 270 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you favor pleasant temperatures and minimal rainfall, September is one of the better months to visit South San Francisco. May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, December tends to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized South San Francisco climate page with graphs.

 

South San Francisco, monthly averages in September

Min Temperature 13°C  

Max Temperature 23°C  

Water Temperature 14°C *  

Chance of Rain 3%  

Precipitation 3.7 mm  

Rainy days a single day  

Humidity 73% *  

Windspeed 18 km/h *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

Data from: San Francisco, the United States of America (4 KM, 2 Miles).

Where to go in the United States of America in September

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

Weather conditions Weather

Temperatures

Precipitation

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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 this month?

For visitors traveling to South San Francisco, 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. With a water temperature of around 14°C there is no need to bring your swimwear.

What To Do

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

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in South San Francisco.

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 travel conditions. Find out where to go with our weather planner.