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

You can expect very pleasant temperatures during the day in May. The average maximum daytime temperature in San Francisco in May lies at 19.2°C (66.56°F). The average minimum temperature goes down to around 10.8°C (51.44°F) (often the minimum temperature is noted at night).

May is a dry month with an average of 7mm (0.3 inches) of rain. There are generally around 2 rainy days. It is also invariably a very sunny time of year with 324 hours of sun during the entire month.

 

San Francisco, monthly averages in May

Show in Fahrenheit

Min Temperature 10 °C  

Max Temperature 19 °C  

Water Temperature 13 °C  

Chance of Rain 8%  

Precipitation 7mm  

Rainy days 2 days  

Humidity 72%  

Sunshine 324 hrs  

Percentage Sunshine 73%  

Where to go in the United States of America in May

Find out more about the weather in the United States of America in May and which places have the best weather 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 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in May? For visitors traveling to 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. At night it tends to cool off so best to pack some warm nightwear as well. With a water temperature of around 13.0°C (55.4°F), 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 in May.

Cycling

10/10

Walking

10/10

Camping

10/10

Outdoor sports

10/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in 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 climate conditions. Find out where to go with our weather planner.