Kōchi Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Kōchi, Shikoku, Japan. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.

Kōchi experiences significant rain/snowfall throughout the year, averaging 1838 mm (72 in) of precipitation annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Kōchi offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between July (223 mm (8.8 in)) and November (104 mm (4.1 in)) is not too significant, making the climate enjoyable for visitors and residents alike.

July, the wettest month, has a maximum daytime temperature of 26°C (79°F). The city receives 175 hours of sunshine in this period. During the driest month November you can expect a temperature of 11°C (52°F). For more detailed insights into the city's temperatures, visit our Kōchi Temperature page.

Kōchi's average annual precipitation is 1838 mm (72 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Mumbai, India, experiences a tropical monsoon climate with 1860 mm (73 in) of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
• Approximately 70% of lightning bolts strike land rather than oceans.
• A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

For more detailed information about Kōchi's weather, including sunshine hours, humidity levels, and temperature data, visit our Kōchi Climate page.