Shiroishi Weather in August
What's the weather like in Shiroishi (Miyagi) in August 2025?
The climate in Shiroishi during August can be summarized as hot, humid and wet.
August is in the summer in Shiroishi and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 19°C (67°F) is normal.
| Daytime temperature | 27.8°C 82°F |
|---|---|
| Nightly temperature | 19.4°C 66.9°F |
| Average temperature | 23.6°C 74.5°F |
| Daily sunshine | 5.9 hrs |
| Avg rainfall | 167 mm 6.6 ins |
| Rainy days | 19 days |
| Sea temperature | 24.5°C 76.2°F |
| Humidity | 79% |
| Windspeed | 7.9kph 5 mph |
On average August is the wettest month of the year in Shiroishi with around 167mm 6.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
August temperatures in Shiroishi
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Shiroishi in August 2025.
Other monthly averages
Best places to visit in August
Shiroishi weather stats
| Hottest month: | August | 27.6°C 81.7°F |
|---|---|---|
| Driest month: | December | 50mm 2ins |
| Sunniest month: | April | 6.6hrs |
| Coldest month: | January | 1.9°C 35.4°F |
| Wettest month: | August | 167mm 6.6ins |
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