August weather forecastOmitama, Japan
August
Weather in August
The last month of the summer, August, is a tropical month in Omitama, Japan, with an average temperature ranging between max 30°C (86°F) and min 23.8°C (74.8°F).Temperature
In Omitama, the month of August is known for its highest average temperatures, reaching a high of 30°C (86°F) and a low of 23.8°C (74.8°F).Heat index
August's heat index is calculated to be a very hot 37°C (98.6°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
The average relative humidity in August is 79%.Rainfall
In Omitama, in August, it is raining for 16.8 days, with typically 66mm (2.6") of accumulated precipitation. Throughout the year, there are 156.4 rainfall days, and 728mm (28.66") of precipitation is accumulated.Snowfall
April through December are months without snowfall.Daylight
In Omitama, Japan, the average length of the day in August is 13h and 31min.On the first day of August, sunrise is at 04:45 and sunset at 18:44. On the last day of the month, sunrise is at 05:09 and sunset at 18:08 JST.
Sunshine
With an average of 10h of sunshine, August has the most sunshine of the year in Omitama.UV index
The average daily maximum UV index in August in Omitama is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 6 in August leads to these recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Omitama, Japan
- Average high temperature in August: 30°C
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (8.1°C).
- Average low temperature in August: 23.8°C
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in August
Omitama, Japan
- Average pressure in August: 1010.2mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in August
Omitama, Japan
- Average wind speed in August: 11.1km/h
The windiest month (with the highest average wind speed) is March (14.4km/h).
The calmest months (with the lowest average wind speed) are June and July (10.9km/h).
Average humidity in August
Omitama, Japan
- Average humidity in August: 79%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (62%).
Average rainfall in August
Omitama, Japan
- Average rainfall in August: 66mm
The wettest month (with the highest rainfall) is October (99mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in August
Omitama, Japan
- Average rainfall days in August: 16.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in August
Omitama, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is February (31mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in August
Omitama, 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
Omitama, Japan
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are February and November (Average sunshine: 5h and 36min).
Average sunshine days in August
Omitama, Japan
- Average sunshine days in August: 12.1 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is June (10 days).
Average UV index in August
Omitama, 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
Omitama, Japan
- Average cloud cover in August: 38
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 29).
Average visibility in August
Omitama, Japan
- Average visibility in August: 9km
The months with the highest visibility are January, February, March, April, October, November and December (10km).
The months with the lowest visibility are May, June, July, August and September (9km).





