Nagano weather in May (Nagano, Japan)

Curious about the May weather in Nagano? This guide provides all the details you need.

In May, Nagano generally has pleasant temperatures and high rainfall. Daytime temperatures hover around 21°C (show in °F), while nights can cool down to about 9°C.

Nagano in May usually receives high rainfall, averaging around 154 mm (show in inches) for the month. Typically around 16 days of rainfall is expected.

The city usually sees around 209 hours of sunlight, indicating many sunny days.

If you favor pleasant temperatures and minimal rainfall, May is one of the better months to visit Nagano. May typically offers the most agreeable circumstances. On the other hand, January, February, March, July, November and December tend to be characterized by conditions that may not be as optimal.

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


Nagano, monthly averages in May

Show in Fahrenheit
Min Temperature 9.2°C  
Max Temperature 20.8°C  
Chance of Rain 55%  
Precipitation 154 mm  
Rainy days 16 days  
Humidity 65%  
Sunshine 209 hours  
Percentage Sunshine  

Where to go in Japan in May

Find out more about the weather in Japan in May 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 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So, what should you wear in Nagano in May?

For visitors traveling to Nagano, 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 May.


Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Nagano.

Our site offers climate and forecast data for every country in the world. Are you going to Japan? On this website you can find historical weather averages for many cities in Japan. 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.