August weather forecastYanai, Japan
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Yanai, Japan, with an average temperature varying between 29.1°C (84.4°F) and 24.3°C (75.7°F).Temperature
With its high average temperature of 29.1°C (84.4°F) and a low of 24.3°C (75.7°F), August is regarded as the warmest month.Heat index
The heat index value during August is appraised at a fiery hot 35°C (95°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Consider that heat index readings are for situations in the shade and light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
The average relative humidity in August in Yanai is 81%.Rainfall
In August, in Yanai, the rain falls for 18.2 days. Throughout August, 113mm (4.45") of precipitation is accumulated. In Yanai, during the entire year, the rain falls for 168 days and collects up to 1163mm (45.79") of precipitation.Snowfall
March through November are months without snowfall.Sea temperature
The month with the warmest seawater is August, with an average sea temperature of 26.8°C (80.2°F).Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.
Daylight
In Yanai, Japan, the average length of the day in August is 13h and 24min.On the first day of the month, sunrise is at 05:23 and sunset at 19:12. On the last day of August, in Yanai, sunrise is at 05:44 and sunset at 18:39 JST.
Sunshine
August has the most sunshine of the year, with an average of 10.7h of sunshine.UV index
In August, the average daily maximum UV index in Yanai, Japan, is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 6 during August leads to these instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Yanai, Japan
- Average high temperature in August: 29.1°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in August: 24.3°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (4.3°C).
Average pressure in August
Yanai, Japan
- Average pressure in August: 1009mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in August
Yanai, Japan
- Average wind speed in August: 8.5km/h
The windiest month (with the highest average wind speed) is January (14.5km/h).
The calmest month (with the lowest average wind speed) is June (8km/h).
Average humidity in August
Yanai, Japan
- Average humidity in August: 81%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall in August
Yanai, Japan
- Average rainfall in August: 113mm
The wettest month (with the highest rainfall) is July (213mm).
The driest month (with the least rainfall) is January (39mm).
Average rainfall days in August
Yanai, Japan
- Average rainfall days in August: 18.2 days
The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is October (10.5 days).
Average snowfall in August
Yanai, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in August
Yanai, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in August
Yanai, Japan
- Average sea temperature in August: 26.8°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is February (12.9°C).
Average daylight in August /
Average sunshine in August
Yanai, Japan
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 10h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in August
Yanai, Japan
- Average sunshine days in August: 10.2 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in August
Yanai, 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 and December (UV index 2).
Average cloud cover in August
Yanai, Japan
- Average cloud cover in August: 32
The months with the most cloud cover are January and June (Cloud cover 43).
The months with the least cloud cover are August, October and November (Cloud cover 32).
Average visibility in August
Yanai, Japan
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).





