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Tamagawa River

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Tamagawa River Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Tamagawa River year round climate

  • Spring (March–May): 9–17°C on average, mild climate but with relatively high rainfall, especially in April. Common activities: picnics, flower viewing. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): 21–27°C on average, hot and humid, with the most rainfall in June. Take precautions against heatstroke. Common activities: water activities, outdoor excursions (avoid rainy days). Recommended clothing: light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): 12–25°C on average, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: viewing autumn leaves, hiking. Recommended clothing: comfortable long-sleeved shirt, light jacket.
  • Winter (December–February): 3–9°C on average, cold and dry, with less rainfall. Common activities: hot springs, indoor activities. Recommended clothing: warm jacket, sweater, scarf and gloves.

Tamagawa River climatological average

Annual average temperature: approx. 15°C / Annual rainfall: approx. 1653 mm / Summer humidity: 70%–80% / Rainiest month: June

Tamagawa River monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
3.3°C
33.3
February
4.6°C
67.8
March
9°C
149
April
14.4°C
164.3
May
17.3°C
188.2
June
21.5°C
270.1
July
26.6°C
139.3
August
27.5°C
220.3
September
24.8°C
180.4
October
17.1°C
121
November
12.1°C
87.9
December
6°C
31.4

Tamagawa River weather for the next seven days

9/30
Wednesday
Light rain shower
18.8°C/17.7°C
10/1
Thursday
Patchy rain nearby
25.3°C/18.4°C
10/2
Friday
Patchy rain nearby
22.8°C/18°C
10/3
Saturday
Overcast
23.3°C/17.9°C
10/4
Sunday
Overcast
24.3°C/19.2°C
10/5
Monday
Light rain shower
20.5°C/17.4°C
10/6
Tuesday
Overcast
26.5°C/17.4°C

Tamagawa River Frequently Asked Questions and Useful Information for Travel

Can you swim in the Tamagawa River?

Visitors can enjoy refreshing swims in the calm pools formed by the Tamagawa River, which meanders through the canyon. The cool, clean water is perfect for a summer dip, and the natural rock formations create secluded spots ideal for a peaceful swim.

What is the Tamagawa River known for?

Near the outskirts of Tokyo, the Tamagawa River is a popular kayaking spot, with the Japan National Slalom Kayak competitions being held on the Tamagawa River where it passes through Mitake. This section of river is also a budding white water rafting and hydrospeeding destination being so accessible from Tokyo.

What are the best activities at Tamagawa River?

The Tamagawa River is renowned for its exciting water sports, including kayaking, white water rafting, and hydrospeeding. The river's natural beauty also makes it an ideal location for scenic hikes and relaxing by the water.

Is Tamagawa River accessible from Tokyo?

Yes, the Tamagawa River is easily accessible from Tokyo, making it a popular destination for day trips and weekend getaways for residents and tourists alike. Its proximity allows for quick access to outdoor adventures.

What kind of natural scenery can be found along the Tamagawa River?

The Tamagawa River is set amidst stunning natural landscapes, featuring picturesque canyons and lush greenery. The clear waters and surrounding rock formations create a serene and beautiful environment for visitors to enjoy.