Rebun Island Temperature by Month

Rebun Island, Hokkaido, Japan has an average annual maximum temperature of 10°C (50°F), ranging from 0°C (32°F) in January to 22°C (72°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Rebun Island is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 19°C (66°F) in August to -4°C (25°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Rebun Island by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 165 hours of sunshine.

The chart below shows the average temperature throughout the year:

Rebun Island's average annual maximum temperature is 10°C (50°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Rebun Island's weather, including monthly rainfall, sunshine hours, and humidity, visit our Rebun Island climate page.