Shirako Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Shirako.
Climate overview of Shirako
The climate in Shirako, Japan, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in August to 11°C (52°F) in January.
The city has a wet climate, receiving around 1667 mm (66 in) of rainfall per year. Despite the high annual total, it has very warm summers and cold winters. October is the wettest month. Sunshine peaks in January, when the city sees around 6.4 hours of sunshine per day.
Shirako Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Shirako - and find the best time to visit.
Monthly Temperature in Shirako
In Shirako, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 30°C (86°F) in August to a chilly 11°C (52°F) in January.
Nighttime temperatures range from 25°C (77°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Shirako
Shirako experiences significant rainfall throughout the year, averaging 1667 mm (66 in) of precipitation annually. The seasons in Shirako bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 224 mm (8.8 in) of precipitation. This rainfall is distributed across 17 rainy days.
In contrast, the driest month, December, experiences much less rainfall, totaling 87 mm (3.4 in) over 11 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Shirako 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 Shirako
Shirako enjoys sunny spells year-round. January sees up to 6.4 hours of daily sunshine, perfect for a sunny trip. June, the least sunny month, still offers a generous 4.1 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Shirako by Month
The relative humidity is high throughout the year in Shirako.
The city experiences its highest humidity in July, reaching 77%. In January, the humidity drops to its lowest level at 53%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Shirako
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and July
- Warmest weather: July and August
- Most sunshine: January and August
- Fewest rainy days: January, February and December
- Seasonal pattern: Very warm summers and cold winters
Frequently asked questions about the climate in Shirako
What is the best time to visit Shirako?
May and July typically offer the most optimal weather in Shirako. In contrast, February tends to have less optimal conditions. Shirako has very warm summers and cold winters.
What temperatures can I expect in Shirako?
Daytime highs range from 11°C (52°F) in January to 30°C (86°F) in August. Nighttime lows range from 5°C (41°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Shirako get?
Annual rainfall is around 1667 mm (66 in). October is the wettest month with 224 mm (8.8 in), while December is the driest with 87 mm (3.4 in).
How sunny is Shirako?
Shirako receives around 1,957 hours of sunshine per year. January is the sunniest month with 193 hours, while June is the cloudiest with just 124 hours.
Shirako 3-Day Forecast
Shirako on the map
Shirako is highlighted - select any city to see its climate.
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