August weather forecastShiroi, Japan
August
Weather in August
The last month of the summer, August, is a hot month in Shiroi, Japan, with an average temperature varying between 31°C (87.8°F) and 24.6°C (76.3°F).Temperature
August is the month when Shiroi's temperatures reach their peak, with averages of 31°C (87.8°F) and lows of 24.6°C (76.3°F).Heat index
August's heat index is appraised at a blisteringly hot 40°C (104°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In August, the average relative humidity in Shiroi is 76%.Rainfall
In Shiroi, in August, during 12.7 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Shiroi, Japan, during the entire year, the rain falls for 144.3 days and collects up to 423mm (16.65") of precipitation.Snowfall
April through December are months without snowfall in Shiroi.Daylight
The average length of the day in August in Shiroi is 13h and 29min.On the first day of the month, sunrise is at 04:47 and sunset at 18:44. On the last day of August, sunrise is at 05:11 and sunset at 18:09 JST.
Sunshine
With an average of 9.9h of sunshine, August has the most sunshine of the year in Shiroi.UV index
In Shiroi, Japan, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Fend off overexposure. Sun protection is vital. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Shiroi, Japan
- Average high temperature in August: 31°C
The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in August: 24.6°C
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in August
Shiroi, Japan
- Average pressure in August: 1010.2mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in August
Shiroi, Japan
- Average wind speed in August: 12km/h
The windiest month (with the highest average wind speed) is April (14.6km/h).
The calmest month (with the lowest average wind speed) is November (11.3km/h).
Average humidity in August
Shiroi, Japan
- Average humidity in August: 76%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (61%).
Average rainfall in August
Shiroi, Japan
- Average rainfall in August: 31mm
The wettest month (with the highest rainfall) is October (58mm).
The driest month (with the least rainfall) is January (18mm).
Average rainfall days in August
Shiroi, Japan
- Average rainfall days in August: 12.7 days
The month with the highest number of rainy days is October (15.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in August
Shiroi, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is February (28mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in August
Shiroi, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Shiroi, Japan
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in August
Shiroi, Japan
- Average sunshine days in August: 16.1 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is September (12.7 days).
Average UV index in August
Shiroi, Japan
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in August
Shiroi, Japan
- Average cloud cover in August: 37
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 30).
Average visibility in August
Shiroi, Japan
- Average visibility in August: 9km
The months with the highest visibility are January, February, March, April, May, September, October, November and December (10km).
The months with the lowest visibility are June, July and August (9km).





