Hachijojima Sunshine Hours by Month

In climate discussions, the hours of sunlight reveal much about a location. This page shows the total number of hours of direct sunlight per month and the average hours per day in Hachijojima, Japan. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in Hachijojima varies greatly throughout the year. The sunniest month, August, reaches an impressive 187 hours, while January, the darkest month, offers only 87 hours. The total annual amount of sun is 1474 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Hachijojima. While August receives considerable daily sunshine with up to 6.2 hours, January marks the darkest time of the year, where sunshine is scarce with only 2.9 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 48% of the time during the day in August, the highest percentage of any month. June has the lowest percentage at 25%.

Hachijojima enjoys an average of 1474 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, Brussels, Belgium, receives only about 1590 hours of sunshine per year, known for its frequently overcast and rainy skies.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 2520 hours of sunshine annually.

Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.

June, Hachijojima’s wettest month, receives 116 mm (4.6 in) of rainfall and has a maximum daytime temperature of 25°C (77°F). During the driest month August you can expect a temperature of 29°C (84°F).

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