August weather forecastYachiyo, Japan
August
Weather in August
August, the last month of the summer in Yachiyo, is a tropical month, with an average temperature fluctuating between 30.9°C (87.6°F) and 24.7°C (76.5°F).Temperature
August, characterized by an average high temperature of 30.9°C (87.6°F) and a low temperature of 24.7°C (76.5°F), is generally the warmest month.Heat index
For August, the heat index is calculated to be a scorching 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In August, the average relative humidity in Yachiyo is 77%.Rainfall
In Yachiyo, in August, during 9 rainfall days, 15mm (0.59") of precipitation is typically accumulated. In Yachiyo, during the entire year, the rain falls for 98.7 days and collects up to 190mm (7.48") of precipitation.Snowfall
March through December are months without snowfall.Daylight
In Yachiyo, the average length of the day in August is 13h and 29min.On the first day of August in Yachiyo, sunrise is at 04:47 and sunset at 18:44. On the last day of the month, sunrise is at 05:10 and sunset at 18:08 JST.
Sunshine
With an average of 10.2h of sunshine, August has the most sunshine of the year.UV index
In Yachiyo, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 6 during August translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Yachiyo, Japan
- Average high temperature in August: 30.9°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in August: 24.7°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in August
Yachiyo, Japan
- Average pressure in August: 1010.2mbar
The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in August
Yachiyo, Japan
- Average wind speed in August: 12.1km/h
The windiest month (with the highest average wind speed) is April (14.8km/h).
The calmest months (with the lowest average wind speed) are June and November (11.7km/h).
Average humidity in August
Yachiyo, Japan
- Average humidity in August: 77%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (61%).
Average rainfall in August
Yachiyo, Japan
- Average rainfall in August: 15mm
The wettest month (with the highest rainfall) is October (25mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in August
Yachiyo, Japan
- Average rainfall days in August: 9 days
The month with the highest number of rainy days is June (10.9 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in August
Yachiyo, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in August
Yachiyo, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
Yachiyo, 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: 10h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in August
Yachiyo, Japan
- Average sunshine days in August: 19.7 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is June (16.1 days).
Average UV index in August
Yachiyo, 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
Yachiyo, Japan
- Average cloud cover in August: 35
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 29).
Average visibility in August
Yachiyo, Japan
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (10km).
The months with the lowest visibility are June and July (9km).





