Rebun Island Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rebun Island.
Climate overview of Rebun Island
Rebun Island, located off the coast of Hokkaido in Japan, is known for its alpine flowers, coastal hikes, and untouched landscapes. The weather shifts significantly over the seasons. Summers are generally pleasant, while winters can be very cold with frequent snowfall and rain. The island’s green environment is shaped by its high precipitation levels. Let’s take a closer look at the climate to help you plan your visit.
Rebun Island Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rebun Island - and find the best time to visit.
Monthly Temperature in Rebun Island
Visitors to Rebun Island can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a pleasant 22°C (72°F) in August, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in August to around -4°C (25°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rebun Island
Rebun Island is known for its substantial rain/snowfall, with annual precipitation reaching 1221 mm (48 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives high snow/rainfall, averaging 135 mm (5.3 in) of precipitation, recorded across 25 snowy/rainy days. In contrast, the driest month April brings less rainfall, with 61 mm (2.4 in) over 16 rainy days. For more details, please visit our Rebun Island Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Rebun Island
Seasonal changes in sunshine hours are quite dramatic in Rebun Island. While May receives considerable daily sunshine with up to 6.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Rebun Island
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August and September
- Warmest weather: August and September
- Most sunshine: May and September
- Seasonal pattern: Pleasant summers and very cold winters
- Coldest conditions: January, with freezing nights around -4°C (25°F).
Frequently asked questions about the climate in Rebun Island
What is the best time to visit Rebun Island?
August and September typically offer the most optimal weather in Rebun Island. In contrast, January, February, March, April, May, November and December tend to have less optimal conditions. Rebun Island has pleasant summers and very cold winters.
What temperatures can I expect in Rebun Island?
Daytime highs range from 0°C (32°F) in January to 22°C (72°F) in August. Nighttime lows range from -4°C (25°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Rebun Island get?
Annual rainfall is around 1221 mm (48 in). December is the wettest month with 135 mm (5.3 in), while April is the driest with 61 mm (2.4 in). In the coldest months, precipitation may fall as snow/rain.
How sunny is Rebun Island?
Rebun Island receives around 1,507 hours of sunshine per year. May is the sunniest month with 186 hours, while December is the cloudiest with just 37 hours.
Rebun Island 3-Day Forecast
Rebun Island on the map
Rebun Island is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Osaka
32°C (90°F) Tokyo30°C (86°F) Naha
30°C (86°F) Kyoto31°C (88°F) Hakone28°C (82°F) Hakuba26°C (79°F) Sapporo24°C (75°F) Niseko24°C (75°F) 
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