Shiroishi Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Shiroishi.
Climate overview of Shiroishi
Temperatures in Shiroishi, Miyagi, Japan, vary greatly throughout the year. August is the hottest month at 28°C (82°F), while January is the coldest at 4°C (39°F).
The city receives considerable rain/snowfall, with around 1446 mm (57 in) annually. July is the wettest month. It has a distinct rainy season from July to September. April is the sunniest month, averaging 6.5 hours of sunshine per day.
Shiroishi Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Shiroishi — and find the best time to visit.
Monthly Temperature in Shiroishi
The climate in Shiroishi is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in August to a chilly 4°C (39°F) in the coolest month, January.
Nights vary from 21°C (70°F) in August to around -3°C (27°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Shiroishi
Shiroishi has a notably wet climate with abundant precipitation, recording 1446 mm (57 in) of rain/snowfall per year. The climate in Shiroishi shows significant variation throughout the year. Expect heavy rainfall in July, the wettest month, with an average of 195 mm (7.7 in) of precipitation over 21 rainy days.
In contrast, the driest month February offers drier and sunnier days, with around 72 mm (2.8 in) of snow/rainfall over 24 snowy/rainy days. For more details, please visit our Shiroishi 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 Shiroishi
Shiroishi offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between April (6.5 hours daily) and July (4.1 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Shiroishi by Month
The relative humidity is high throughout the year in Shiroishi.
The city experiences its highest humidity in July, reaching 84%. In March, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Shiroishi
The wettest months are 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 Shiroishi
What is the best time to visit Shiroishi?
May, June, August and September typically offer the most optimal weather in Shiroishi. In contrast, January, February, March and December tend to have less optimal conditions. Shiroishi has a distinct rainy season from July to September.
What temperatures can I expect in Shiroishi?
Daytime highs range from 4°C (39°F) in January to 28°C (82°F) in August. Nighttime lows range from -3°C (27°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Shiroishi get?
Annual rainfall is around 1446 mm (57 in). July is the wettest month with 195 mm (7.7 in), while February is the driest with 72 mm (2.8 in).
How sunny is Shiroishi?
Shiroishi receives around 1,843 hours of sunshine per year. April is the sunniest month with 195 hours, while July is the cloudiest with just 124 hours.
Shiroishi 3-Day Forecast
Shiroishi 3-Day Forecast
Shiroishi on the map
Shiroishi 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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