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St. Helena weather in May (California, United States of America)

Wondering what the weather is like in St. Helena during May? Get all the weather information you need to plan your visit.

Temperatures

Expect perfect weather in St. Helena during May, which means high temperatures and low rainfall. During the day, temperatures usually reach up to 26°C. At night, they tend to fall to approximately 10°C.

Precipitation

St. Helena in May usually receives low rainfall, averaging around 21 mm for the month. Records from the past 30 years suggest that around 4 days will experience rain.

Average sunshine

There are approximately 310 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit. April, May, June, July, August, September and October generally stand out with the best circumstances. While January, February and December tend to showcase less optimal conditions.

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

 

St. Helena, monthly averages in May

Min TemperatureMin Temperature 10°C  
Max TemperatureMax Temperature 26°C  
Chance of RainChance of Rain 14%  
PrecipitationPrecipitation 21 mm  
Rainy daysRainy days 4 days  
SunshineSunshine 310 hours *  
Percentage SunshinePercentage Sunshine 76% *  
Data from: Healdsburg, the United States of America (36 KM, 22 Miles).

Where to go in the United States of America in May

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

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.

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 St. Helena.

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.