Nasu in January: 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

1.9°C (35°F)

Low

−5.3°C (22°F)

Precipitation

52.6 mm

Wet days

9.1 days

Sunshine

131 hours

• Highs are 3.2°C below December and 0.8°C below February.
• That is 12.0°C below Nasu's yearly average high of 13.9°C.
• Of our 34 places with temperature records, Nasu is the 5th coldest in January: 0.4°C cooler than Karuizawa and 0.1°C warmer than Aomori.
• January is Nasu's 2nd driest month (52.6 mm).
• Of our 35 places, Nasu has the 10th lowest precipitation in January: 0.7 mm less than Kyoto and 0.2 mm more than Nara.
• 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 30.1 nights.
• On 9.1 days it stays below 0°C all day.
• 103 cm of snow falls in an average January; snow 5 cm or deeper lies on the ground on 20.6 days.
• The sun is out for 40% or more of the possible hours on 16.3 days, and 0.4 days have under 0.1 hours of sunshine.

Average temperature

−1.7°C (29°F)

Deepest snow (average of each year's deepest)

32 cm

Early, mid and late January

By the last ten days of January the average high in Nasu is 0.9°C lower than in the first ten.

By ten-day totals, 21–31 January is the wettest (21.2 mm) and 11–20 January the driest (14.3 mm).

Is Nasu cold in January?

Yes, it is very cold. Nasu averages 1.9°C (35°F) by day and −5.3°C (22°F) at night in January. 11–20 January is the coldest stretch of the year, with highs of 1.6°C.

Freezing: highs around 1.9°C

• A heavy winter coat (down or similar), thermal underwear, a hat, gloves and a scarf.
• Gloves and a hat for mornings and nights: the temperature drops below 0°C on 30.1 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 20.6 days (deepest 32 cm on average).

Pack

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

• Our clothing rules

National holidays in January 2027:

• Fri 1 January — New Year's Day
• Mon 11 January — Coming of Age Day

• Fri 1 January to Sun 3 January: 3 days off in a row
• Sat 9 January to Mon 11 January: 3 days off in a row

In January 2025, hotels and inns across Tochigi Prefecture were 43.0% full on average (the quietest month of the year). Foreign guests spent 30,630 nights there that month (Japan Tourism Agency). That compares with 51.2% in December and 48.0% in February.

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