Izu Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Izu. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Izu has a relatively rainy climate with high precipitation levels, averaging 2217 mm of rainfall annually.

Monthly Precipitation Levels

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

Izu can be quite wet during June, receiving approximately 275 mm of precipitation over 19 rainy days.

In contrast December, experiences much drier conditions, with 87 mm of rainfall, spread across 9 rainy days.

June, the city’s wettest month, has a maximum daytime temperature of 25°C and receives 124 hours of sunshine. During the driest month December you can expect a temperature of 13°C. For more detailed insights into the city’s temperatures, visit our Izu Temperature page.

Annual Precipitation in Japan

The map below shows the annual precipitation across Japan. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Izu’s average annual precipitation is 2217 mm. Let’s compare this to some popular worldwide tourist destinations:

The city of Rome, Italy, has an average annual precipitation of 832 mm, spread fairly evenly throughout the year.

In Shanghai, China, the annual average precipitation is 1347 mm, with a humid subtropical climate.

In Tokyo, Japan, the average annual precipitation is 1528 mm, with significant summer rains due to typhoon season.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

How is Precipitation Measured?

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.

Sea vs. Land Precipitation

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.

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