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

Averages for 1991–2020 at the JMA's Aomori station (3 m above sea level).

High

4.5°C (40°F)

Low

−1.4°C (29°F)

Precipitation

155.2 mm

Wet days

21.2 days

Sunshine

50 hours

Snow on ground

23.6 days

• Highs fall 6.7°C from November and drop another 2.7°C into January.
• That is 10.4°C below Aomori's yearly average high of 14.9°C.
• Of our 34 places with temperature records, Aomori is the 4th coldest in December: 0.6°C cooler than Nasu and 1.3°C warmer than Hakodate.
• Of our 35 places, Aomori has the 7th highest precipitation in December: 0.0 mm less than Ishigaki and 8.0 mm more than Miyakojima.
• Rain or snow of 1 mm or more falls on 21.2 days, and 10 mm or more on 5.0 days.
• The temperature drops below 0°C on 22.0 nights.
• On 4.0 days it stays below 0°C all day.
• 143 cm of snow falls in an average December; snow lies on the ground on 23.6 days.
• The sun is out for 40% or more of the possible hours on 5.3 days, and 6.7 days have under 0.1 hours of sunshine.
• On 15 December 2026 the sun rises at 6:54 and sets at 16:10 in Aomori, giving 9 hours 16 minutes of daylight (NAOJ).

Average temperature

1.4°C (35°F)

Humidity

78%

Deepest snow (average of each year's deepest)

51 cm

Early, mid and late December

By the last ten days of December the average high in Aomori is 2.7°C lower than in the first ten.

By ten-day totals, 21–31 December is the wettest (54.9 mm) and 1–10 December the driest (46.9 mm).

Is Aomori cold in December?

Yes, it is very cold. Aomori averages 4.5°C (40°F) by day and −1.4°C (29°F) at night in December. It gets colder still: 11–20 January has highs of 1.6°C.

Freezing: highs around 4.5°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 22.0 nights.
• A waterproof jacket with a hood: rain or snow falls on 21.2 days.

Shoes

• Waterproof boots with good grip: snow lies on the ground on 23.6 days (deepest 51 cm on average).

Pack

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

• Our clothing rules

There are no national holidays in December 2026.

In December 2025, hotels and inns across Aomori Prefecture were 52.8% full on average (9th busiest of 12 months). Foreign guests spent 43,460 nights there that month (Japan Tourism Agency). That compares with 65.5% in November and 44.6% in January.

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