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Shimanto

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Best time to visit Shimanto

Data source：Meteostat
Last updated：2025-09

Weather in Shimanto throughout the year

  • Spring (March–May): Average 11.1–19.3°C, mild climate but with relatively high rainfall, especially in March and April. Common activities: enjoying the scenery, flower viewing. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 23.1–28.6°C, hot and humid with relatively high rainfall. Common activities: playing in streams, visiting summer resorts. Recommended clothing: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 18.9–25.9°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: viewing autumn leaves, hiking. Recommended clothing: comfortable long-sleeved shirts, jacket.
  • Winter (December–February): Average 5.9–8.3°C, cold and dry with less rainfall. Common activities: onsen experience, indoor activities. Recommended clothing: warm jacket, sweater, scarf.

Weather in Shimanto

Annual average temperature: approx. 17.2°C / Annual rainfall: approx. 1648 mm / Summer humidity: 70%–80% / Rainiest month: June

Shimanto weather by month

Month
Temperature (°C)
Rainfall (mm)
January
5.9°C
25
February
6.8°C
63.7
March
11.1°C
148.3
April
16.2°C
143.7
May
19.3°C
186.3
June
23.1°C
253.7
July
28.3°C
156.7
August
28.6°C
206.3
September
25.9°C
217
October
18.9°C
146.7
November
14.2°C
75.7
December
8.3°C
25.8

7-day weather forecast for Shimanto

11/14
Saturday
Smog
18.7°C/11.4°C
11/15
Sunday
Mist
15.6°C/13.1°C
11/16
Monday
Overcast
18.9°C/12.9°C
11/17
Tuesday
Patchy rain nearby
13.4°C/10.4°C
11/18
Wednesday
Light rain
14.2°C/10.1°C
11/19
Thursday
Sunny
16.9°C/10.1°C
11/20
Friday
Sunny
14.2°C/8.2°C

Shimanto travel FAQs and useful info

What is special about the Shimanto River?

The Shimanto River is special due to its pristine waters, being the longest river in Shikoku at 196 kilometers. It remains largely untouched by intense urban development, making it a prime destination for nature enthusiasts seeking unspoiled beauty.

What is the population of Shimanto?

Shimanto, located in southwestern Kōchi Prefecture, Japan, had an estimated population of 32,593 in 16,635 households as of July 31, 2022. The city covers a total area of 632.29 square kilometers with a population density of 52 persons per km2.

Can you swim in the Shimanto River?

Yes, you can swim in the Shimanto River. Its exceptionally clean waters make it a popular spot for nature lovers and families. Besides swimming and wading, canoeing is another highly recommended activity on the river.

What are the best ways to experience Shimanto?

To best experience Shimanto, explore its untouched natural beauty, particularly the Shimanto River, by canoe or by simply enjoying the serene surroundings. The city offers opportunities for hiking, cycling along its scenic paths, and immersing yourself in the local culture and way of life.

What kind of activities can one enjoy in Shimanto?

In Shimanto, you can enjoy a variety of activities centered around its natural environment. Popular options include canoeing and kayaking on the pristine Shimanto River, cycling along the riverbanks, exploring traditional villages, and appreciating the clear night skies due to minimal light pollution.