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Aomori Weather by Month
Aomori Prefecture, located in northern Japan, experiences a humid temperate climate with four distinct seasons, marked by significant seasonal changes due to its position in the northern hemisphere. The Ou Mountain Range divides the prefecture into the Tsugaru region (Sea of Japan side) and the Kennan region (Pacific Ocean side), creating varied weather patterns. Below is a detailed month-by-month breakdown of Aomori’s weather, including minimum and maximum temperatures, weather conditions, clothing recommendations, best locations to visit, locations to avoid, and records for temperature, rainfall, snowfall, and wind. The best and worst times to visit are also discussed, aiming for a comprehensive 1,000-word overview.
January
- Min/Max Temperatures: -6°C (21.2°F) / 0°C (32°F)
- Weather: January is Aomori’s coldest month, with frequent heavy snowfall, especially in the Tsugaru region, averaging 210 cm of snow. The Kennan region sees less snow but remains cold and humid. Expect around 30 snowy or rainy days, with minimal sunshine (4 hours daily).
- Clothing: Wear heavy winter gear: thermal base layers, thick winter coats, gloves, scarves, mufflers, and waterproof, insulated boots for icy paths. Layering is key, as indoor heating can be warm.
- Best Locations to Visit: Hirosaki Snow Lantern Festival offers a magical snowy experience. Hakkoda Mountains are ideal for skiing and snowboarding. Hot springs (onsen) like Asamushi Onsen provide warmth and relaxation.
- Locations to Avoid: Remote mountainous areas like the Hakkoda backcountry can be dangerous due to heavy snow and limited visibility.
- Records: Lowest temperature: -6°C (February 2019). Highest rainfall: 146 mm. Highest snowfall: 210 cm. Record wind: 26 km/h (moderate breeze).
February
- Min/Max Temperatures: -6°C (21.2°F) / 1°C (33.8°F)
- Weather: February retains January’s biting cold, with heavy snowfall (around 46 cm in late February) and cloudy skies. The Tsugaru region sees more precipitation than Kennan. Sunshine hours remain low at about 4.5 hours daily.
- Clothing: Similar to January, wear thermal layers, heavy coats, and snow-resistant footwear. A hat or hood is essential for wind protection.
- Best Locations to Visit: Hachinohe Enburi Festival showcases traditional dances amid snowy landscapes. Aomori Spring (Ajigasawa) is great for skiing with fresh powder.
- Locations to Avoid: Coastal areas exposed to strong winds, like the Tsugaru Strait, can feel piercingly cold.
- Records: Lowest temperature: -6°C (2019). Rainfall: 78 mm (driest month). Snowfall: 46 cm (late February). Wind: 8.3 knots (gentle breeze).
March
- Min/Max Temperatures: -3°C (26.6°F) / 5°C (41°F)
- Weather: March signals early spring, but cold persists with occasional snow (around 10 cm). Rainfall averages 80 mm, and winds are strongest (8.3 knots). Humidity is lower (67%), and sunshine increases slightly to 5 hours daily.
- Clothing: Layer with a waterproof jacket, sweaters, and sturdy boots. A scarf helps with windy days.
- Best Locations to Visit: Hirosaki Park prepares for cherry blossoms, though blooms are not yet full. Towada Lake offers serene, less snowy scenery.
- Locations to Avoid: High-altitude ski resorts may have unpredictable weather as snow begins to melt.
- Records: Sea temperature: 7.9°C (coldest). Rainfall: 80 mm. Wind: 16 knots (moderate breeze).
April
- Min/Max Temperatures: 2°C (35.6°F) / 12°C (53.6°F)
- Weather: Spring arrives with cherry blossoms blooming late April. Daytime is warm, but mornings and evenings are cool. Rainfall is low (77 mm), with 17 rainy days. Sunshine peaks at 6 hours daily.
- Clothing: Layer with jackets or cardigans over light clothing. A raincoat or umbrella is handy for showers.
- Best Locations to Visit: Hirosaki Park’s Cherry Blossom Festival is a must-see, drawing photographers for its pink landscapes. Aomori City parks are ideal for picnics.
- Locations to Avoid: Avoid overly crowded festival areas if seeking solitude.
- Records: Rainfall: 77 mm (driest). Highest temperature: 20°C (possible in late April).
May
- Min/Max Temperatures: 7°C (44.6°F) / 18°C (64.4°F)
- Weather: May offers comfortable weather with highs of 18°C and 197 hours of sunshine (8.7 hours daily). Rainfall is moderate (78 mm), with 19 rainy days. The climate is ideal for outdoor activities.
- Clothing: Light jackets, long sleeves, and comfortable shoes. Bring an umbrella for occasional rain.
- Best Locations to Visit: Shirakami-Sanchi for hiking in lush greenery. Lake Towada is perfect for boating and scenic walks.
- Locations to Avoid: None specifically, as May is broadly favorable.
- Records: Sunshine: 197 hours (sunniest month). Rainfall: 78 mm.
June
- Min/Max Temperatures: 12°C (53.6°F) / 22°C (71.6°F)
- Weather: Early summer brings warmer temperatures and the start of the rainy season, with 80 mm of rainfall over 19 days. Humidity rises (74.5%), but sunshine remains decent (6 hours daily).
- Clothing: Light, breathable clothing with a raincoat or umbrella. Sandals or waterproof shoes are practical.
- Best Locations to Visit: Aomori City for early summer festivals. Mutsu Bay for fresh seafood experiences.
- Locations to Avoid: Low-lying areas prone to flooding during heavy rain.
- Records: Rainfall: 80 mm. Highest temperature: 25°C (late June).
July
- Min/Max Temperatures: 16°C (60.8°F) / 25°C (77°F)
- Weather: The rainy season peaks, ending mid-July, with 119 mm of rainfall over 20 days. Humidity is highest (84.6%). Temperatures are warm, and sunshine averages 5.5 hours daily.
- Clothing: Light, moisture-wicking clothes, umbrellas, and hats for sun protection.
- Best Locations to Visit: Nebuta Festival preparations in Aomori City. Tsuta Onsen for relaxing in nature.
- Locations to Avoid: Coastal areas during potential typhoon activity (June-November season).
- Records: Rainfall: 119 mm. Highest temperature: 91.4°F (July, historical).
August
- Min/Max Temperatures: 19°C (66.2°F) / 27°C (80.6°F)
- Weather: August is the warmest month, with highs of 27°C and sea temperatures at 23.6°C. Rainfall is heaviest (149-177 mm) over 18 days, but sunny days are frequent (6 hours daily). Tsugaru sees tropical days, while Kennan stays cooler.
- Clothing: Light, breathable clothing, sunglasses, and rain gear. Sandals are suitable for warm days.
- Best Locations to Visit: Aomori City’s Nebuta Festival, with vibrant parades. Oirase Stream for cool, scenic hikes.
- Locations to Avoid: Overcrowded festival sites if avoiding crowds.
- Records: Highest temperature: 36°C (August 2022). Rainfall: 177 mm (wettest). Sunshine: 169 hours.
September
- Min/Max Temperatures: 15°C (59°F) / 24°C (75.2°F)
- Weather: Early autumn brings cooler mornings and evenings with 119 mm of rainfall over 20 days. Humidity remains high (80%), and sunshine averages 5.5 hours daily. Typhoon risks persist.
- Clothing: Sweaters, light coats, and a stole for cooler evenings. Umbrellas are essential.
- Best Locations to Visit: Shirakami-Sanchi for early autumn foliage. Hirosaki Castle for scenic views.
- Locations to Avoid: Coastal areas during potential typhoon warnings.
- Records: Rainfall: 119 mm. Highest temperature: 90°F (historical).
October
- Min/Max Temperatures: 10°C (50°F) / 18°C (64.4°F)
- Weather: Autumn foliage peaks with comfortable highs of 18°C. Rainfall is moderate (100 mm) over 15 days, with 5.5 hours of sunshine daily. The climate is ideal for sightseeing.
- Clothing: Layer with jackets, scarves, and comfortable walking shoes.
- Best Locations to Visit: Towada-Hachimantai National Park for stunning fall colors. Aomori City for cultural sites.
- Locations to Avoid: None, as October is highly favorable.
- Records: Rainfall: 100 mm. Highest temperature: 25°C.
November
- Min/Max Temperatures: 4°C (39.2°F) / 10°C (50°F)
- Weather: November cools significantly, with 93 mm of rainfall over 24 days. Snow may begin late in the month. Sunshine averages 4.5 hours daily, and humidity drops slightly.
- Clothing: Warm layers, waterproof jackets, and sturdy shoes. Prepare for early snow.
- Best Locations to Visit: Hirosaki for apple harvesting and autumn scenery. Lake Towada for tranquil views.
- Locations to Avoid: High-altitude areas as snow begins.
- Records: Rainfall: 93 mm. Snowfall: Minimal but increasing late November.
December
- Min/Max Temperatures: -1°C (30.2°F) / 3°C (37.4°F)
- Weather: Winter returns with heavy snowfall (77 cm over 25 days) and significant rainfall (217 mm). Sunshine is scarce (4.2 hours daily), and temperatures drop to freezing at night.
- Clothing: Heavy winter coats, thermal layers, gloves, and snow boots. Layer for indoor warmth.
- Best Locations to Visit: Hakkoda Mountains for early winter sports. Asamushi Onsen for cozy retreats.
- Locations to Avoid: Remote areas with heavy snow accumulation.
- Records: Rainfall: 217 mm (highest). Snowfall: 77 cm. Wind: 26 km/h.
Best and Worst Times to Visit
- Best Time: May to October offers mild to warm weather (18-27°C), moderate rainfall (78-177 mm), and long daylight hours (13.8-14.5 hours). August is optimal for warmth and festivals like Nebuta, while October is ideal for autumn foliage and comfortable temperatures.
- Worst Time: December to March is challenging due to freezing temperatures (-6°C to 5°C), heavy snowfall (up to 210 cm), and limited daylight (9.3-10.6 hours). January and February are particularly harsh for warm-weather travelers.
Annual Records
- Temperature: Highest: 36°C (August 2022). Lowest: -6°C (February 2019).
- Rainfall: 1,485 mm annually, with August peaking at 177 mm.
- Snowfall: 406 cm annually, with January at 210 cm.
- Wind: March and April see maximum sustained winds of 16 knots.
Conclusion
Aomori’s climate offers diverse experiences, from snowy winter festivals to vibrant summer parades and stunning autumn foliage. Packing appropriately for each season ensures comfort, while choosing the right time and locations enhances your visit. May to October provides the best balance of weather and activities, while winter months are best for snow enthusiasts prepared for the cold.
Paul (Poison Fish) Manjyu Woodman
