August weather forecastUmusa, Japan
August
Weather in August
The last month of the summer, August, is another warm month in Umusa, Japan, with temperature in the range of an average high of 29.4°C (84.9°F) and an average low of 27.8°C (82°F).Temperature
August is the month when Umusa experiences its warmest temperatures, averaging a high of 29.4°C (84.9°F) and a low of 27.8°C (82°F).Heat index
The heat index in August is evaluated at a sweltering 36°C (96.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In August, the average relative humidity is 81%.Rainfall
In Umusa, Japan, in August, it is raining for 21.3 days, with typically 177mm (6.97") of accumulated precipitation. Throughout the year, there are 229.8 rainfall days, and 1512mm (59.53") of precipitation is accumulated.Daylight
The average length of the day in August is 13h and 4min.On the first day of August, sunrise is at 05:53 and sunset at 19:15. On the last day of the month, sunrise is at 06:07 and sunset at 18:49 JST.
Sunshine
In Umusa, Japan, the average sunshine in August is 9.1h.UV index
June through September, with an average maximum UV index of 7, are months with the highest UV index in Umusa. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In August, a regular UV index of 7 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Umusa, Japan
- Average high temperature in August: 29.4°C
The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (18.6°C).
- Average low temperature in August: 27.8°C
The month with the highest average low temperature is August (27.8°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).
Average pressure in August
Umusa, Japan
- Average pressure in August: 1006.7mbar
The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is August (1006.7mbar).
Average wind speed in August
Umusa, Japan
- Average wind speed in August: 20.7km/h
The windiest month (with the highest average wind speed) is December (25.7km/h).
The calmest month (with the lowest average wind speed) is May (18.4km/h).
Average humidity in August
Umusa, Japan
- Average humidity in August: 81%
The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is January (72%).
Average rainfall in August
Umusa, Japan
- Average rainfall in August: 177mm
The wettest month (with the highest rainfall) is June (228mm).
The driest month (with the least rainfall) is January (63mm).
Average rainfall days in August
Umusa, Japan
- Average rainfall days in August: 21.3 days
The month with the highest number of rainy days is June (22.6 days).
The month with the least rainy days is November (16.2 days).
Average daylight in August /
Average sunshine in August
Umusa, Japan
- Average daylight in August: 13h and 6min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in August: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Umusa, Japan
- Average sunshine days in August: 6.3 days
The month with the most sunshine days is May (11.1 days).
The month with the least sunshine days is June (5.4 days).
Average UV index in August
Umusa, Japan
- Average UV index in August: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in August
Umusa, Japan
- Average cloud cover in August: 37
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in August
Umusa, Japan
- Average visibility in August: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
