Shunan Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Shunan.
Climate overview of Shunan
Temperatures in Shunan, Yamaguchi, Japan, vary greatly throughout the year. August is the hottest month at 31°C (88°F), while January is the coldest at 10°C (50°F).
The city receives considerable rainfall, with around 1779 mm (70 in) annually. June is the wettest month.
Shunan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Shunan — and find the best time to visit.
Monthly Temperature in Shunan
The climate in Shunan is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in August to a chilly 10°C (50°F) in the coolest month, January.
Nights vary from 25°C (77°F) in August to around 4°C (39°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Shunan
Shunan has a notably wet climate with abundant precipitation, recording 1779 mm (70 in) of rainfall per year. The climate in Shunan shows significant variation throughout the year. Expect heavy rainfall in June, the wettest month, with an average of 282 mm (11 in) of precipitation over 18 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 69 mm (2.7 in) of rainfall over 21 rainy days. For more details, please visit our Shunan Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Shunan
The wettest months are May, June, July, August and September, when precipitation is at its highest. Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
Frequently asked questions about the climate in Shunan
What is the best time to visit Shunan?
May, October and November typically offer the most optimal weather in Shunan. In contrast, January, June and July tend to have less optimal conditions.
What temperatures can I expect in Shunan?
Daytime highs range from 10°C (50°F) in January to 31°C (88°F) in August. Nighttime lows range from 4°C (39°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Shunan get?
Annual rainfall is around 1779 mm (70 in). June is the wettest month with 282 mm (11 in), while January is the driest with 69 mm (2.7 in).
Shunan 3-Day Forecast
Shunan 3-Day Forecast
Shunan on the map
Shunan 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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