Kumejima Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Kumejima, Japan. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.

Kumejima has a notably wet climate with abundant precipitation, recording 2031 mm (80 in) of rainfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.

Monthly Precipitation Levels

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

While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 256 mm (10 in) of precipitation, spread over 19 rainy days.

In contrast, November experiences a drier climate, with about 120 mm (4.7 in) of rainfall spread across 20 rainy days.

June, the wettest month, has a maximum daytime temperature of 29°C (84°F). During the driest month November you can expect a temperature of 25°C (77°F). For more detailed insights into the city's temperatures, visit our Kumejima Temperature page.

Kumejima's average annual precipitation is 2031 mm (80 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

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.

Climate change is affecting precipitation patterns worldwide, including Kumejima:

• Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
• Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.

• 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 Kumejima's weather, including sunshine hours, humidity levels, and temperature data, visit our Kumejima Climate page.