Iiyama weather in December (Nagano, Japan)

Looking to travel to Iiyama in December? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In December, Iiyama typically experiences low temperatures and heavy snow/rainfall. December falls within the winter season. Throughout the day, temperatures typically settle at around 6°C. But by evening, they drop to around -3°C.

Iiyama in December falls under the rainy season with heavy snow/rainfall, averaging around 187 mm for the month. Snow/rain is expected on roughly 22 days.

The area experiences limited sunny days, amounting to roughly 79 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Iiyama. 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 December

Min Temperature -3°C  

Max Temperature 6°C  

Chance of Rain 75%  

Precipitation 187 mm  

Rainy days 22 days  

Humidity 76% *  

Sunshine 79 hours *  

Percentage Sunshine *  

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

Where to go in Japan in December

Find out more about the weather in Japan in December 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°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Iiyama in December?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

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

Swimming

4/10

Cycling

3/10

Walking

3/10

Camping

1/10

Outdoor sports

3/10

Interested in more climate information?

Weather and Climate 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 climate conditions. Find out where to go with our weather planner.