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Chikugo River

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Chikugo River Weather and climate

Data source：Meteostat
Update date：2025-09

Chikugo River year round climate
  • Spring (March–May): Average 11.2–19.5°C, mild and comfortable climate, but with relatively high rainfall and occasional overcast days. Common activities: picnics, flower viewing (e.g., azaleas), cycling along the Chikugo River. Recommended clothing: light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): Average 23.6–28.4°C, hot and humid with heavy rainfall, especially in July. Common activities: swimming and boating near the Chikugo River, or seeking indoor refuge from the heat. Recommended clothing: light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 18.3–26.0°C, comfortable and pleasant climate with reduced rainfall and abundant sunshine. Common activities: viewing autumn leaves, hiking, strolling along the Chikugo River. Recommended clothing: light jacket or long-sleeved shirt, comfortable shoes.
  • Winter (December–February): Average 4.7–6.5°C, cold and dry with little rainfall. Common activities: visiting hot springs, exploring indoor attractions. Recommended clothing: warm jacket, sweater, scarf, hat, gloves.
Chikugo River climatological average

Annual average temperature: approx. 16.5°C / Annual rainfall: approx. 1996 mm / Summer humidity: 70%–80% / Rainiest month: July

Chikugo River monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.7°C
65.4
February
6.5°C
84.5
March
11.2°C
152.2
April
16.2°C
167.7
May
19.5°C
192.9
June
23.6°C
270.5
July
28.1°C
500.2
August
28.4°C
221.5
September
26°C
129.8
October
18.3°C
86.9
November
13.4°C
89
December
5.9°C
36.1
Chikugo River weather for the next seven days
10/29
Wednesday
Sunny
17°C/6.8°C
10/30
Thursday
Partly Cloudy
20.4°C/8.2°C
10/31
Friday
Patchy rain nearby
17.2°C/11.6°C
11/1
Saturday
Patchy rain nearby
19.9°C/11.2°C
11/2
Sunday
Partly Cloudy
16.7°C/9.8°C
11/3
Monday
Sunny
16°C/7.3°C
11/4
Tuesday
Partly Cloudy
20°C/8.7°C

Chikugo River FAQ

What is the longest river in Kyushu?
The Chikugo River is the longest river in Kyushu. It has a length of 143 kilometers and flows through four prefectures: Oita, Kumamoto, Fukuoka, and Saga, before emptying into the Ariake Sea. The river begins its journey from the rim of Mount Aso and nourishes the land as it makes its way through the Chikugo plain.
Where does the Chikugo River originate and where does it flow?
The Chikugo River originates from the rim of Mount Aso. It then flows through four prefectures in Kyushu: Oita, Kumamoto, Fukuoka, and Saga. Finally, it empties into the Ariake Sea after traversing the Chikugo plain.
What is the significance of the Chikugo River?
The Chikugo River is significant as Kyushu's longest river, playing a vital role in irrigating the fertile Chikugo plain, which supports extensive rice cultivation and has enabled the establishment of cities in the region. It is a crucial waterway for the local economy and environment.
What natural features are associated with the Chikugo River?
The Chikugo River is characterized by its journey from the mountainous region around Mount Aso, carving out valleys in its upper reaches and forming alluvial plains in its lower course. The Chikugo plain is a notable feature, known for its agricultural productivity.
How long is the Chikugo River?
The Chikugo River is 143 kilometers long, making it the longest river in the Kyushu region of Japan.