Iwanai Weather in December

Thinking of visiting Iwanai in December? Expect very low temperatures reaching 1°C (34°F) during the day, dropping to -5°C (23°F) at night, and note that quite a bit of snow/rainfall is likely.

Rainfall in Iwanai in December

Historically, approximately 29 days this month are expected to have snow/rain, averaging 139 mm (5.5 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Iwanai in December

Temperatures in Iwanai in December top out at 1°C (34°F) and drop to -5°C (23°F) overnight. Winter occurs in December. Expect a distinctly cold feel throughout the day, not just overnight. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. The month is chilly, so ensure you're equipped and dress warmly. Preparation becomes key in these temperatures.

Sunshine in Iwanai in December

The area experiences limited sunny days, amounting to roughly 87 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 Iwanai. Our weather planner can help you explore destinations with more pleasant weather conditions.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• August

• September
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• December

For a detailed overview over the year and the best time to visit Japan, check out our Iwanai's climate page.

Iwanai Temperature in December

Min Temperature -5°C (23°F)  

Max Temperature 1°C (34°F)  

Chance of Rain 96%  

Precipitation 139 mm (5.5 in)  

Rainy days 29 days  

Humidity 71% *  

Sunshine 87 hours *  

Percentage Sunshine *  

* Data from: Sapporo, Japan (69 KM, 43 Miles).

What to Wear in Iwanai in December

Dress warmly and in layers for your trip to Iwanai in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Iwanai in December

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

Swimming

4/10

Cycling

2/10

Walking

2/10

Camping

1/10

Outdoor sports

2/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Iwanai's climate page.

More climate data for Iwanai

Temperature Rainfall Sunshine Humidity

See the full Iwanai climate overview or explore weather in Japan.