Iiyama weather in May (Nagano, Japan)

Thinking of visiting Iiyama in May? Check the weather first! Check out this detailed guide to the month’s weather conditions.

Temperatures

May in Iiyama generally includes pleasant temperatures and high rainfall. Anticipate daytime temperatures around 21°C, while night temperatures can drop to 10°C.

Precipitation

Iiyama in May usually receives high rainfall, averaging around 142 mm for the month. Typically around 17 days days of rainfall are expected.

Average sunshine

The days are predominantly sunny, with an estimated total of around 198 hours of sunshine. These sun-filled days are perfect for spending time outside. Whether it's playing sports, visiting a park, or going for a bike ride.

So this is a great month to visit if you prefer dry days with pleasant temperatures. May typically offers the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

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

 

Iiyama, monthly averages in May

Min Temperature 10°C  

Max Temperature 21°C  

Chance of Rain 56%  

Precipitation 142 mm  

Rainy days 17 days  

Humidity 71% *  

Sunshine 198 hours *  

Percentage Sunshine *  

Data from: Joetsu, Japan (30 KM, 18 Miles).

Where to go in Japan in May

Find out more about the weather in Japan 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 Iiyama, 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.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Iiyama.

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