Nasu in December: weather, what to wear and what's on

Averages for 1991–2020 at the JMA's Nasu Kogen station (749 m above sea level).

High

5.1°C (41°F)

Low

−2.6°C (27°F)

Precipitation

60.1 mm

Wet days

9.1 days

Sunshine

133 hours

• Highs fall 5.8°C from November and drop another 3.2°C into January.
• That is 8.8°C below Nasu's yearly average high of 13.9°C.
• Of our 34 places with temperature records, Nasu is the 5th coldest in December: 0.2°C cooler than Karuizawa and 0.6°C warmer than Aomori.
• December is Nasu's 3rd driest month (60.1 mm).
• Of our 35 places, Nasu has the 15th lowest precipitation in December: 0.3 mm less than Kusatsu Onsen and 2.2 mm more than Tokyo.
• Rain or snow of 1 mm or more falls on 9.1 days, and 10 mm or more on 1.6 days.
• The temperature drops below 0°C on 25.0 nights.
• On 3.3 days it stays below 0°C all day.
• 55 cm of snow falls in an average December; snow 5 cm or deeper lies on the ground on 6.4 days.
• The sun is out for 40% or more of the possible hours on 16.7 days, and 0.6 days have under 0.1 hours of sunshine.

Average temperature

1.1°C (34°F)

Deepest snow (average of each year's deepest)

21 cm

Early, mid and late December

By the last ten days of December the average high in Nasu is 3.4°C lower than in the first ten.

Is Nasu cold in December?

Yes, it is cold. Nasu averages 5.1°C (41°F) by day and −2.6°C (27°F) at night in December. It gets colder still: 11–20 January has highs of 1.6°C.

Cold: highs around 5.1°C

• A winter coat over layers, and a scarf.
• Gloves and a hat for mornings and nights: the temperature drops below 0°C on 25.0 nights.
• A waterproof jacket with a hood: rain or snow falls on 9.1 days.

Shoes

• Waterproof boots with good grip: snow 5 cm or deeper lies on the ground on 6.4 days (deepest 21 cm on average).

Pack

• Waterproof jacket with a hood
• Gloves and a warm hat
• Scarf
• Waterproof boots with grip

• Our clothing rules

There are no national holidays in December 2026.

In December 2025, hotels and inns across Tochigi Prefecture were 51.2% full on average (10th busiest of 12 months). Foreign guests spent 31,390 nights there that month (Japan Tourism Agency). That compares with 63.4% in November and 43.0% in January.

• Japan in December: visitor numbers and busy travel days
• Holidays in December
• Year-end and New Year holidays