Tokyo Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Tokyo, Tokyo Prefecture, Japan. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.
Tokyo is known for its substantial rain/snowfall, with annual precipitation reaching 1528 mm (60 in).
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, October receives substantial rainfall, averaging 211 mm (8.3 in) of precipitation, recorded across 17 rainy days.
In contrast, the driest month, December brings less rainfall, with 62 mm (2.4 in) over 9 rainy days.
October, the wettest month, has a maximum daytime temperature of 23°C (73°F). The city receives 129 hours of sunshine in this period. During the driest month December you can expect a temperature of 13°C (55°F). For more detailed insights into the city's temperatures, visit our Tokyo Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Tokyo's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Tokyo spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
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
Tokyo vs World: Rainfall Compared
Tokyo's average annual precipitation is 1528 mm (60 in). Let's compare this to some popular worldwide tourist destinations:
Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.
In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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 Tokyo's weather, including sunshine hours, humidity levels, and temperature data, visit our Tokyo Climate page.
