Hachijo Sunshine Hours by Month

When exploring climate, sunlight hours tell an important story. This page shows the total number of hours of direct sunlight per month and the average hours per day in Hachijo, Japan. These averages rely on historical data collected over 30 years, from 1990 to 2020.

Monthly hours of sunshine

If you're visiting Hachijo, timing is key. In August, you can enjoy up to 187 hours of sunshine, while the shorter days of January provide just 87 hours. The total annual amount of sun is 1474 hours.

Daily hours of sunshine

For those who appreciate different seasons, Hachijo serves as an ideal destination. Expect longer, more sun-filled days in August with an average of 6.2 hours of sunshine daily, and embrace the darker days in January, offering only 2.9 hours of daily sunlight.

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%.

Hachijo enjoys an average of 1474 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, Reykjavík, Iceland, receives only about 1330 hours of sunshine per year, known for its frequently overcast and rainy skies.

In Seoul, South Korea, there are approximately 2133 hours of sunshine per year, mostly during spring and autumn.

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

June, Hachijo’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 Hachijo Precipitation page.