Taking the bus in the morning gave me peace of mind, as the elderly and children could rest more on the bus. I'm very grateful to the driver for dropping us off at a place where we could reach our destination without getting wet in the rain, and for even showing us how to get there – he was so thoughtful!
Anonymous User
Family
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
7/16
Thursday
Partly Cloudy
35.7°C/27.3°C
7/17
Friday
Patchy rain nearby
30.1°C/25.6°C
7/18
Saturday
Patchy rain nearby
31°C/24.7°C
7/19
Sunday
Partly Cloudy
30.7°C/24.6°C
7/20
Monday
Partly Cloudy
32.8°C/24.7°C
7/21
Tuesday
Patchy rain nearby
34.3°C/26.1°C
7/22
Wednesday
Light rain shower
31.2°C/25.9°C
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