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Sanriku

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Sanriku Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Sanriku year round climate

  • Spring (March–May): 42–59°F on average, mild climate, but still cool in early spring with occasional rain. March has more rainfall. Popular activities: flower viewing, coastal hiking. Recommended clothing: light jacket, comfortable long pants, casual shoes.
  • Summer (June–August): 67–77°F on average, hot and humid, frequent rainfall, with the most rainfall in July. Popular activities: swimming at the beach, sightseeing boat tours. Recommended clothing: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): 49–71°F on average, comfortable and pleasant climate, warm in early autumn, turning cooler in late autumn, with gradually decreasing rainfall. Popular activities: maple leaf viewing, seafood tasting. Recommended clothing: comfortable long-sleeved clothing, light jacket.
  • Winter (December–February): 34–38°F on average, cold and dry, less rainfall. Popular activities: onsen experience, indoor activities. Recommended clothing: warm clothing, thick jacket, scarf, hat.

Sanriku climatological average

Annual average temperature: approx. 54.9°F / Annual rainfall: approx. 1440 mm / Summer humidity: 70%–80% / Rainiest month: July

Sanriku monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
34.7°F
78.6
February
36°F
34.8
March
42.6°F
148.1
April
53.4°F
112.9
May
59.9°F
101.7
June
67.3°F
131.7
July
75.9°F
228.2
August
77.4°F
214.9
September
71.4°F
170.1
October
59.4°F
105.2
November
49.3°F
71.6
December
38.3°F
42.2

Sanriku weather for the next seven days

12/16
Tuesday
Patchy rain nearby
43.2°F/32.7°F
12/17
Wednesday
Patchy rain nearby
38.4°F/31.5°F
12/18
Thursday
Sunny
39.2°F/31.9°F
12/19
Friday
Sunny
49.4°F/31.9°F
12/20
Saturday
Sunny
54.4°F/38.9°F
12/21
Sunday
Patchy rain nearby
52.2°F/45°F
12/22
Monday
Heavy rain
59.2°F/52.5°F

Sanriku Frequently Asked Questions and Useful Information for Travel

What does the name Sanriku mean?

The name Sanriku refers to a collective of three historical provinces. The 'san' (三) in Sanriku specifically means 'three'. These provinces were part of an administrative division that became obsolete in 1871 when Japan was reorganized into its current prefecture system.

How many people died in the Sanriku tsunami?

In a catastrophic tsunami that struck Sanriku on June 15, 1896, official accounts indicate that 27,122 people died. Additionally, 10,617 buildings were washed away, and 9,247 people were injured during this event.

How tall was the tsunami in Sanriku?

Following a weak ground earthquake, a massive tsunami impacted the Sanriku coast. The highest wave recorded reached an impressive 38.2 meters. This tsunami resulted in significant damage, claiming 22,066 lives and destroying 8,891 houses.

Where is the Sanriku coast located?

The Sanriku Coast, known locally as Sanriku Kaigan, is a scenic coastal region situated on the Pacific Ocean. It stretches from the southern part of Aomori Prefecture, through Iwate Prefecture, and into the northern reaches of Miyagi Prefecture, all located in the northeastern part of Honshu, Japan's main island.

What are some unique experiences on the Sanriku coast?

The Sanriku coast offers a wealth of unique experiences. Visitors can explore dramatic cliffs, enjoy fresh seafood, learn about the region's resilience through its recovery efforts, and witness the natural beauty of its rugged shoreline. It's an ideal destination for those seeking authentic Japanese coastal experiences.