August weather forecastSunomiya, Japan
August
Weather in August
The last month of the summer, August, is another warm month in Sunomiya, Japan, with an average temperature fluctuating between 28°C (82.4°F) and 25.8°C (78.4°F).Temperature
August, on average, is the warmest month, registering a high temperature of 28°C (82.4°F) and a low of 25.8°C (78.4°F).Heat index
The heat index in August is estimated at a tropical 33°C (91.4°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Observations indicate that the heat index values are for shady locations with light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Humidity
In August, the average relative humidity is 83%.Rainfall
In Sunomiya, in August, during 12.8 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Sunomiya, during the entire year, the rain falls for 157.4 days and collects up to 525mm (20.67") of precipitation.Snowfall
In Sunomiya, snow does not fall in March through December.Daylight
In August, the average length of the day is 13h and 27min.On the first day of the month, sunrise is at 04:50 and sunset at 18:43. On the last day of August, in Sunomiya, sunrise is at 05:12 and sunset at 18:09 JST.
Sunshine
August has the most sunshine of the year in Sunomiya, with an average of 10.5h of sunshine.UV index
In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In August, a regular UV index of 6 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Sunomiya, Japan
- Average high temperature in August: 28°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in August: 25.8°C
The month with the highest average low temperature is August (25.8°C).
The coldest months (with the lowest average low temperature) are January and February (7.2°C).
Average pressure in August
Sunomiya, Japan
- Average pressure in August: 1010mbar
The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in August
Sunomiya, Japan
- Average wind speed in August: 19.2km/h
The windiest month (with the highest average wind speed) is March (25.7km/h).
The calmest month (with the lowest average wind speed) is June (18.8km/h).
Average humidity in August
Sunomiya, Japan
- Average humidity in August: 83%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (62%).
Average rainfall in August
Sunomiya, Japan
- Average rainfall in August: 33mm
The wettest month (with the highest rainfall) is June (70mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in August
Sunomiya, Japan
- Average rainfall days in August: 12.8 days
The months with the highest number of rainy days are September and October (15.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in August
Sunomiya, Japan
- Average snowfall in August: 0mm
The months with the highest snowfall are January and February (1mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in August
Sunomiya, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Sunomiya, Japan
- Average daylight in August: 13h and 24min
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 54min).
- Average sunshine in August: 10h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Sunomiya, Japan
- Average sunshine days in August: 14.9 days
The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in August
Sunomiya, Japan
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in August
Sunomiya, Japan
- Average cloud cover in August: 32
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Sunomiya, Japan
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





