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Kuma River

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Kuma River Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Kuma River year round climate

  • Spring (March–May): 11.5–19.1°C on average, mild and rainy; March to May experience heavier rainfall, so bring rain gear. Common activities: flower viewing, strolling along the Kuma River. Suggested attire: light jacket, long-sleeved shirt, raincoat or umbrella.
  • Summer (June–August): 22.8–27.2°C on average, hot and humid; June has the most rainfall, with July and August also experiencing heavier rainfall. Common activities: boating on the Kuma River, visiting summer resorts. Suggested attire: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): 18.6–25.5°C on average, comfortable and pleasant; rainfall gradually decreases. Common activities: hiking, enjoying autumn scenery. Suggested attire: light jacket, long-sleeved shirt.
  • Winter (December–February): 5.2–7.5°C on average, cold and dry; less rainfall. Common activities: onsen experience, indoor activities. Suggested attire: warm jacket, hat, gloves, scarf.

Kuma River climatological average

Annual average temperature: approx. 16.4°C / Annual rainfall: approx. 2609 mm / Summer humidity: 70%–80% / Rainiest month: June

Kuma River monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
5.2°C
49.4
February
7.5°C
132.8
March
11.5°C
208.4
April
16.3°C
294.9
May
19.1°C
245.4
June
22.8°C
511.2
July
27.1°C
438.5
August
27.2°C
191.7
September
25.5°C
243.8
October
18.6°C
127
November
13.5°C
101.8
December
5.8°C
64.6

Kuma River weather for the next seven days

6/3
Wednesday
Patchy rain nearby
27.2°C/16.8°C
6/4
Thursday
Heavy rain
21.6°C/16.4°C
6/5
Friday
Moderate rain
23.2°C/18.8°C
6/6
Saturday
Patchy rain nearby
28.1°C/17.2°C
6/7
Sunday
Heavy rain
18.8°C/17.4°C
6/8
Monday
Patchy rain nearby
24.3°C/15.6°C
6/9
Tuesday
Cloudy
25.9°C/13.6°C

Kuma River Frequently Asked Questions and Useful Information for Travel

What are the three major rivers of Japan?

The Mogami, the Fuji and the Kuma are regarded as the three most rapid rivers of Japan. Typical rivers of Japan rise from mountainous forests and cut out deep V-shaped valleys in their upper reaches, and form alluvial plains in their lower reaches which enable the Japanese to cultivate rice fields and to set up cities.

What makes the Kuma River a notable river in Japan?

The Kuma River is recognized as one of Japan's three most rapid rivers, characterized by its journey through mountainous forests and its carving of deep V-shaped valleys. These natural features contribute to its scenic beauty and the fertile alluvial plains it creates in its lower reaches, supporting rice cultivation and settlements.

Can you recommend activities along the Kuma River?

Exploring the gorges with spectacular views of the Kuma River is a must. Visitors can also enjoy hiking trails, relax in nearby hot springs, or experience the local culture by sipping tea at an idyllic café along its banks.

What is the geographical significance of the Kuma River?

The Kuma River originates in high mountainous areas and flows through deep V-shaped valleys in its upper reaches. In its lower reaches, it forms alluvial plains, which are crucial for the cultivation of rice fields and the establishment of cities, highlighting its importance to Japan's landscape and agriculture.

Is the Kuma River known for its water clarity or color?

While the Niyodo River is famously known for its cobalt blue "Niyodo Blue" water and clarity, the Kuma River's beauty lies more in its rapid flow, scenic gorges, and its role in shaping the surrounding landscape for agriculture and settlement.