Itoigawa Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Itoigawa, Niigata Prefecture, Japan. These values are calculated using 30 years of data (1990–2020) to ensure accuracy. Now, let's break down all the details for a clearer picture.
Itoigawa experiences significant rain/snowfall throughout the year, averaging 2801 mm (110 in) of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The amount of precipitation varies moderately throughout the year. The wettest month, January, sees around 309 mm (12 in) of snow/rainfall, perfect for those who enjoy a bit of snow/rain now and then. The driest month, May, still receives a respectable 147 mm (5.8 in) of rainfall.
January, the wettest month, has a maximum daytime temperature of 4°C (39°F). The city receives 67 hours of sunshine in this period. During the driest month May you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Itoigawa Temperature page.
Annual Rainfall in Japan: City Comparison
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
Itoigawa vs World: Rainfall Compared
Itoigawa's average annual precipitation is 2801 mm (110 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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 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 Itoigawa's weather, including sunshine hours, humidity levels, and temperature data, visit our Itoigawa Climate page.
