Yearly & Monthly weather

The climate of Aomori

The city of Aomori, Japan, reveals a contrasting spectrum of climatic conditions characteristic of the Cfa subtype of the Köppen climate classification: Humid Subtropical, with no distinct dry season. It is surrounded by diverse topography, from flatlands to mountains - all complementing the variable weather conditions, varying from cold winter months to balmy summer seasons.

Continuous shifts in Aomori’s weather parameters are seen throughout the year. The year gets underway with January’s lowest temperatures descending till -6°C (21.2°F), marching progressively to a warm peak with highs of 27°C (80.6°F) in August. Simultaneously, the lowest rainfall count is found in April at 77mm (3.03"), steadily increasing to a yearly high of 149mm (5.87") in August.

Some distinctive weather patterns emerge when delving into Aomori’s annual climatic cycle. December to February fall under the grip of an intense cold spell, with maximum temperatures not exceeding 1°C (33.8°F). In direct contrast, bountiful rainfall graces the city from July to September, peaking in August. Furthermore, Aomori experiences very lengthy daylight hours stretching up to 15.1 hours in June and an appreciable amount of sunshine for 7 hours during May.

The best time to visit Aomori

For optimal weather conditions, the period from May to October is the most favorable to experience Aomori. This span combines moderate rainfall, with an average rainfall of between 78mm (3.07") and 119mm (4.69"), and mild temperatures, averaging from 18°C (64.4°F) to 27°C (80.6°F). The seas warm up, providing delightful conditions for water-related activities, with temperatures reaching up to 23.6°C (74.5°F) in August. Additionally, long daylight hours averaging 14.5 to 13.8 hours from May to August allow more than enough daylight for sightseeing and outdoor activities.

The worst time to visit Aomori

Venturing into Aomori between December and February can present challenges. The winter’s biting cold touches upon temperatures as low as -6°C (21.2°F), and the sea turns uninviting with temperatures plunging down to 7.9°C (46.2°F) in March. In addition, reduced daylight hours, reaching a minimum of 9.3 hours in December, limit the opportunities for daytime exploration.

Spring weather in Aomori

Spring ushers in a gradual increase in temperature, from 5°C (41°F) in March to 18°C (64.4°F) in May. The rainfall remains in moderate amounts, average of 82mm (3.23") to 78mm (3.07") across these months, while the sea shows a slow rising trend from 7.9°C (46.2°F) in March to 11.8°C (53.2°F) in May. Daylight hours also expand from 11.9 hours in March, reaching 14.5 hours in May.

Summer weather in Aomori

Summer brings warmer days with a surge in temperature from 21°C (69.8°F) in June to 27°C (80.6°F) by August. Correspondingly, rainfall shows an upward trajectory, rising from 96mm (3.78") in June to 149mm (5.87") in August. Equally noticeable is the sea's temperature increase from 16.1°C (61°F) in June to 23.6°C (74.5°F) in August. Daylight is plenty, averaging about 14.7 hours from June through August.

Autumn weather in Aomori

Autumn sees a cooling shift with temperatures receding from 22°C (71.6°F) in September down to 10°C (50°F) in November. Concurrently, rainfall figures display a downward incline, from 144mm (5.67") in September to 130mm (5.12") in November. The sea’s temperature too witnesses a fall from 22.6°C (72.7°F) in September to 15.3°C (59.5°F) come November. Daylight hours also gradually decrease from 12.5 hours in September to 9.9 hours by November.

Winter weather in Aomori

Winter in Aomori sets in with temperatures dipping down from 3°C (37.4°F) in December to a chilling -6°C (21.2°F) in January and February. Rainfall proves significant, varying from 130mm (5.12") in November to a significant 146mm (5.75") in January. The sea becomes considerably colder, with temperatures falling from 12.2°C (54°F) in December to 8.3°C (46.9°F) in February. Short-lived daylight hours, between 9.3 and 10.6 hours from December to February, add to the wintry feel.

Weather in January

January in Aomori, Japan sees the coldest weather of the year with temperatures falling as low as -6°C (21.2°F). This cold climate promotes frequent snowfall and transforms Aomori into a winter wonderland. Along with chill and snow, January also brings the fewest sunshine hours, casting a distinct pale light throughout the day. Weather in January »

Weather in February

While February retains the biting chill of the previous month with lowest temperatures still hovering at -6°C (21.2°F), subtle shifts in Aomori's winter imminent signs of the approaching spring can be discerned. The daily hours of sunlight start to inch slowly upwards, illuminating the city with a slightly warmer glow. Weather in February »

Weather in March

March displays a noticeable shift towards spring weather in Aomori. The transitory period showcases a fascinating blend of lingering winter elements and wafts of renewing spring air, resulting in a volatile and often unpredictable weather pattern. Weather in March »

Weather in April

With the arrival of April, Aomori fully transitions into the season of renewal. Overnight frosts give way to mild temperatures, and the once snowy landscape transforms into blooming fields of spring flowers. The average high temperature climbs up to 12°C (53.6°F), instigating the awakening of dormant plants and animals. Weather in April »

Weather in May

May graces Aomori with pleasant weather which is an interplay of lingering spring chill and early hints of summer warmth. The city is brimming with blossoms, their fragrances permeating the air. A significant jump in the average high temperate to 18°C (64.4°F) facilitates a multitude of outdoor activities. Weather in May »

Weather in June

June kicks off the summer season in Aomori, marked by longer days and warmer temperatures. With the arrival of the summer solstice, the city basks in over 15.1 daylight hours, the most in a year. The weather encourages travel and swaths of lush green landscape offer an enchanting view to nature enthusiasts. Weather in June »

Weather in July

July in Aomori is vibrant, filled with sunshine, warmth, and summer merriment. The weather is hot, with an average high temperature soaring to 25°C (77°F). The ultraviolet index reaches its peak this month, necessitating sun protection for outdoor activities. Weather in July »

Weather in August

August is typically the hottest month in Aomori with temperatures often peaking at 27°C (80.6°F), creating a vibrant and lively atmosphere. The city is awash with summer colors, complemented by clear blue skies and a sun that insists on extending its stay. Weather in August »

Weather in September

September signals the gradual transition from summer toward cooler fall temperatures in Aomori. The vibrant summer colors begin to give way to the first hints of autumn hues. Even though temperatures drop to a comfortable 22°C (71.6°F), the sea remains warm, making it perfect for a late-summer dip. Weather in September »

Weather in October

October brings the full onset of autumn in Aomori. The weather is cooler, and there is a distinct crispness in the air indicating that winter is approaching. Despite the lowering temperatures, reaching highs of up to 16°C (60.8°F), the city continues to be bathed in plentiful sunshine. Weather in October »

Weather in November

November in Aomori poses a stark contrast where fall gently capsizes into winter territory. The month begins with the remnants of the fall foliage but quickly sees the first snow of the season. The average high temperatures drop to 10°C (50°F), a precursor to the inevitable winter chill. Weather in November »

Weather in December

December marks the full onset of winter in Aomori with an average high temperature of just 3°C (37.4°F). The snowy season begins in earnest, and the city transforms into a wintry landscape straight out of a postcard. Aomori, already renowned for its beautiful landscapes, gains an additional charm under a blanket of snow. Weather in December »

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Aomori?

During the coldest month in Aomori, January, temperatures average a high of 0°C (32°F) and a low of -6°C (21.2°F).

How many days does it rain in Aomori?

In Aomori, Japan, during the entire year, the rain falls for 261 days and collects up to 1375mm (54.13") of precipitation.

What is the month with the least sunshine in Aomori?

The months with the least sunshine are January and December, with an average of 2h of sunshine.

What is the month with the lowest UV index in Aomori?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Aomori.

What month is the sea coldest in Aomori?

The month with the coldest seawater in Aomori, Japan, is March, with an average sea temperature of 7.9°C (46.2°F).

What is the driest month in Aomori?

The month with the least rainfall in Aomori is April, when the rain falls for 17 days and typically collects 77mm (3.03") of precipitation.

What month has the most sunshine in Aomori?

The month with the most sunshine in Aomori, Japan, is May, with an average of 7h of sunshine.

When are the longest days in Aomori?

The month with the longest days in Aomori is June, with an average of 15h and 6min of daylight.

What is the month with the highest UV index in Aomori?

July is the month with the highest UV index in Aomori, with an average maximum UV index of 9.

What is the hottest time of year in Aomori?

The warmest month is August, with an average high-temperature of 27°C (80.6°F) and an average low-temperature of 19°C (66.2°F).

What is the wettest month in Aomori?

The month with the most rainfall in Aomori is August, when the rain falls for 18 days and typically aggregates up to 149mm (5.87") of precipitation.

What is the month with the warmest sea water in Aomori?

With an average sea temperature of 23.6°C (74.5°F), August is the month with the warmest seawater.

What is the month with the shortest days in Aomori?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

Is there Daylight Saving Time (DST) in Aomori?

Aomori, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.

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Long-term

Year J F M A M J J A S O N D

Average temperature
Aomori, Japan

Average high temperature in January:
0°C
Average high temperature in February:
1°C
Average high temperature in March:
5°C
Average high temperature in April:
12°C
Average high temperature in May:
18°C
Average high temperature in June:
21°C

Average high temperature in July:
25°C
Average high temperature in August:
27°C
Average high temperature in September:
22°C
Average high temperature in October:
16°C
Average high temperature in November:
10°C
Average high temperature in December:
3°C

The warmest month (with the highest average high temperature) is August (27°C).
The month with the lowest average high temperature is January (0°C).

Average low temperature in January:
-6°C
Average low temperature in February:
-6°C
Average low temperature in March:
-3°C
Average low temperature in April:
2°C
Average low temperature in May:
7°C
Average low temperature in June:
12°C

Average low temperature in July:
17°C
Average low temperature in August:
19°C
Average low temperature in September:
13°C
Average low temperature in October:
7°C
Average low temperature in November:
1°C
Average low temperature in December:
-3°C

The month with the highest average low temperature is August (19°C).
The coldest months (with the lowest average low temperature) are January and February (-6°C).

Average rainfall
Aomori, Japan

The wettest month (with the highest rainfall) is August (149mm).
The driest month (with the least rainfall) is April (77mm).

Average rainfall days
Aomori, Japan

Average rainfall days in January:
30 days
Average rainfall days in February:
26 days
Average rainfall days in March:
25 days
Average rainfall days in April:
17 days
Average rainfall days in May:
18 days
Average rainfall days in June:
17 days

Average rainfall days in July:
18 days
Average rainfall days in August:
18 days
Average rainfall days in September:
19 days
Average rainfall days in October:
20 days
Average rainfall days in November:
24 days
Average rainfall days in December:
29 days

The month with the highest number of rainy days is January (30 days).
The months with the least rainy days are April and June (17 days).

Average sea temperature
Aomori, Japan

Average sea temperature in January:
10°C
Average sea temperature in February:
8.3°C
Average sea temperature in March:
7.9°C
Average sea temperature in April:
9.5°C
Average sea temperature in May:
11.8°C
Average sea temperature in June:
16.1°C

Average sea temperature in July:
20.3°C
Average sea temperature in August:
23.6°C
Average sea temperature in September:
22.6°C
Average sea temperature in October:
19.1°C
Average sea temperature in November:
15.3°C
Average sea temperature in December:
12.2°C

The best month for swimming (with the highest average sea temperature) is August (23.6°C).
The coldest month (with the lowest average sea temperature) is March (7.9°C).

Average daylight / Average sunshine
Aomori, Japan

Average daylight in January:
9h and 4min
Average daylight in February:
10h and 4min
Average daylight in March:
11h and 5min
Average daylight in April:
13h and 2min
Average daylight in May:
14h and 3min
Average daylight in June:
15h and 1min

Average daylight in July:
14h and 5min
Average daylight in August:
13h and 5min
Average daylight in September:
12h and 3min
Average daylight in October:
11h and 1min
Average daylight in November:
9h and 5min
Average daylight in December:
9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is May (Average sunshine: 7h).
The months with the least sunshine are January and December (Average sunshine: 2h).

Average UV index
Aomori, Japan

The month with the highest UV index is July (UV index 9).
The months with the lowest UV index are January and December (UV index 1).

Climate and monthly weather forecastAomori, Japan

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