Tokyo Sunshine Hours by Month

Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Tokyo, Tokyo Prefecture, Japan. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Across the seasons, sunshine hours in Tokyo vary. From a high of 189 hours in January, to a low of 123 hours in June, the city offers a balanced mix of sunny and overcast days. The total annual sunshine amounts to 1925 hours.

Daily hours of sunshine

Enjoy up to 6.3 hours of daily sun in January, and experience slightly darker atmosphere in June, with about 4.1 hours of daily sunlight.

Average percent of sunshine

On average the sun shines 57% of the time during the day in January, the highest percentage of any month. June has the lowest percentage at 28%.

Tokyo enjoys an average of 1925 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

In Shanghai, China, the annual average sunshine is 1780 hours, with cloudier weather in summer.

Melbourne, Australia, has 2380 hours of sunshine annually, with its famous “four seasons in a day” weather pattern.

October, Tokyo’s wettest month, receives 116 mm (4.6 in) of rainfall and has a maximum daytime temperature of 23°C (73°F). During the driest month December you can expect a temperature of 13°C (55°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Tokyo Precipitation page.