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A-FACTORY building with the white cable-stayed Aomori Bay Bridge and visitors walking along the waterfront

Photo: A-FACTORY20210724-IMG 5620.jpg by くろふね (CC BY 4.0, cropped), via Wikimedia Commons.

Aomori weather by month: temperature, rain and what to wear

Aomori's average high runs from 1.8°C (35°F) in January to 27.8°C (82°F) in August (JMA, 1991–2020). The wettest month is December (155.2 mm) and the driest is April (68.7 mm).

When to go to Aomori, by the numbers

  • Months with average highs between 15°C and 25°C and fewer than 10 wet days: May and June.
  • Fewest wet days: June (8.3 days).
  • Quietest hotels in 2025 (Aomori Prefecture): January (44.6%), March (49.2%) and February (51.8%).
  • Busiest hotels in 2025 (Aomori Prefecture): October (74.7%), August (74.2%) and September (69.4%).
  • Plum blossom: around 19 April on average.
  • Cherry blossom: around 22 April on average.
  • Hydrangea: around 14 July on average.
  • Autumn leaves (maple): around 13 November on average.
  • Ginkgo turns yellow: around 2 November on average.

What to wear in Aomori, month by month

Aomori: our clothing level for each month (from the JMA's averages)
MonthLevelAverage highWet days
JanuaryFreezing1.8°C21.9 days
FebruaryFreezing2.7°C18.1 days
MarchCold6.8°C14.1 days
AprilChilly13.7°C10.6 days
MayCool18.8°C9.6 days
JuneMild22.1°C8.3 days
JulyWarm26.0°C9.1 days
AugustWarm27.8°C9.6 days
SeptemberMild24.5°C10.3 days
OctoberCool18.3°C12.8 days
NovemberChilly11.2°C16.7 days
DecemberFreezing4.5°C21.2 days

How busy Aomori is, month by month

How full hotels across Aomori Prefecture were, month by month in 2025 (%)

Average room occupancy for all hotels and inns (Japan Tourism Agency).

  1. Jan44.6%
  2. Feb51.8%
  3. Mar49.2%
  4. Apr56.4%
  5. May62.1%
  6. Jun63.3%
  7. Jul68.0%
  8. Aug74.2%
  9. Sep69.4%
  10. Oct74.7%
  11. Nov65.5%
  12. Dec52.8%

Frequently asked questions

When is the best time to visit Aomori?

Months with average highs between 15°C and 25°C and fewer than 10 wet days: May and June. Fewest wet days: June (8.3 days).

What is the hottest month in Aomori?

August has the highest average high, 27.8°C (82°F). January has the lowest, 1.8°C (35°F) (JMA, 1991–2020).

What is the rainiest month in Aomori?

December has the most precipitation (155.2 mm), and January has the most wet days (21.9 days) (JMA, 1991–2020).

Aomori weather month by month

Averages for 1991–2020 at the JMA's Aomori station (3 m above sea level). Months with their own page are linked; the others follow.

Aomori by month: averages for 1991–2020 (JMA)
MonthHighLowPrecipitationWet daysSunshine
January1.8°C−3.5°C139.9 mm21.9 days48 hours
February2.7°C−3.3°C99.0 mm18.1 days72 hours
March6.8°C−0.8°C75.2 mm14.1 days126 hours
April13.7°C4.1°C68.7 mm10.6 days179 hours
May18.8°C9.4°C76.7 mm9.6 days201 hours
June22.1°C14.1°C75.0 mm8.3 days180 hours
July26.0°C18.6°C129.5 mm9.1 days161 hours
August27.8°C20.0°C142.0 mm9.6 days178 hours
September24.5°C15.8°C133.0 mm10.3 days162 hours
October18.3°C9.1°C119.2 mm12.8 days144 hours
November11.2°C3.4°C137.4 mm16.7 days85 hours
December4.5°C−1.4°C155.2 mm21.2 days50 hours
Average high in Aomori, month by month (°C)
  1. Jan1.8°C
  2. Feb2.7°C
  3. Mar6.8°C
  4. Apr13.7°C
  5. May18.8°C
  6. Jun22.1°C
  7. Jul26.0°C
  8. Aug27.8°C
  9. Sep24.5°C
  10. Oct18.3°C
  11. Nov11.2°C
  12. Dec4.5°C

Events in Aomori through the year

Events in Aomori: dates from each organizer's official page
EventMonthWhen
Hakkoda Maru Countdown Event八甲田丸カウントダウンイベントDec and Jan31 December to 1 January Official page
Asamushi Nebuta Winter Campaign浅虫ねぶた 冬の陣Jan and FebLate January to late February. 23 January – 22 February 2026. Official page
Aomori Winter Festival青森冬まつりFebMid-February, two days (2026: 14 and 15 February, 9:00-15:00) Official page
The Motsuke Festival and Winter Fireworksザ・もつけ祭り＆冬花火FebMid-February, one evening (2026: 14 February, 17:30-19:00) Official page
Winter Festival at Linkstation Hills Kumoya (Moya Hills)ウインターフェスティバル in リンクステーションヒルズ雲谷MarEarly March Official page
Yunoshima Katakuri Festival湯の島かたくり祭りMar and AprLate March to mid-April. 28 March – 12 April 2026. Official page
Aomori Spring Festival青森春まつりAprMid to late April (2026: 18 to 29 April) Official page
Aomori City Apple Fair青森市産りんご大市NovLate November Official page

Related items

Aomori in JanuaryFreezingA heavy winter coat, thermals, hat and gloves.High1.8°CLow−3.5°CPrecipitation139.9 mmWet days21.9 daysAomori in FebruaryFreezingA heavy winter coat, thermals, hat and gloves.High2.7°CLow−3.3°CPrecipitation99.0 mmWet days18.1 daysAomori in MarchColdA winter coat over layers, and a scarf.High6.8°CLow−0.8°CPrecipitation75.2 mmWet days14.1 daysAomori in AprilChillyA warm jacket or light coat over a sweater.High13.7°CLow4.1°CPrecipitation68.7 mmWet days10.6 days

Back to Japan by month

Read more

Sources for this page

  1. Normals for 1991–2020: Aomori (青森), month by month (平年値 年・月ごとの値)Japan Meteorological Agency (JMA)
  2. Normals for 1991–2020: Aomori (青森), rain days, temperature days and snow (詳細)Japan Meteorological Agency (JMA)
  3. Overnight Travel Statistics Survey, 2025 final figures (宿泊旅行統計調査 2025年 年の確定値)Japan Tourism Agency
  4. Biological season observations (生物季節観測の情報)Japan Meteorological Agency (JMA)
  5. Yearly records of flowering and leaf colour since 1953 (生物季節観測累年値)Japan Meteorological Agency (JMA)
  6. Hakkoda Maru Countdown Event (八甲田丸カウントダウンイベント)Aomori City
  7. Asamushi Nebuta Winter Campaign (浅虫ねぶた 冬の陣)Aomori Prefecture tourism information site (Amazing AOMORI)
  8. Aomori Winter Festival (青森冬まつり)Aomori City
  9. The Motsuke Festival and Winter Fireworks (ザ・もつけ祭り＆冬花火)Aomori Prefecture tourism information site (Amazing AOMORI)
  10. Winter Festival at Linkstation Hills Kumoya (Moya Hills) (ウインターフェスティバル in リンクステーションヒルズ雲谷)Aomori City
  11. Yunoshima Katakuri Festival (湯の島かたくり祭り)Aomori City
  12. Aomori Spring Festival (青森春まつり)Aomori City