Izumo Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows both the average monthly rainfall and the number of rainy days in Izumo, Shimane, Japan. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.
Izumo has a notably wet climate with abundant precipitation, recording 1691 mm of rainfall per year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 208 mm of precipitation, spread over 17 rainy days.
In contrast, November experiences a drier climate, with about 102 mm of rainfall spread across 19 rainy days.
July, the wettest month, has a maximum daytime temperature of 29°C. During the driest month November you can expect a temperature of 17°C. For more detailed insights into the city’s temperatures, visit our Izumo 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.
heavy rainfall
high
moderate
low
almost none
Amsterdam Precipitation Compared World Wide
Izumo’s average annual precipitation is 1691 mm. Let’s compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm, evenly distributed across the year with no extreme wet or dry seasons.
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.
Interesting weather facts
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm wide and 20 cm thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters fell during the winter of 1972.
For more detailed information about Izumo’s weather, including sunshine hours, humidity levels, and temperature data, visit our Izumo Climate page.
Current rainfall in Izumo
