Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The warmest period tends to be August, when average temperatures fluctuate between a high of 30.8°C (87.4°F) and a low of 22.9°C (73.2°F).Heat index
Throughout August, the heat index is appraised at a blisteringly hot 40°C (104°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
In August, the average relative humidity is 78%.Rainfall
In August, the rain falls for 12.3 days. Throughout August, 36mm (1.42") of precipitation is accumulated. In Onomichi, during the entire year, the rain falls for 118.5 days and collects up to 329mm (12.95") of precipitation.Snowfall
In Onomichi, Japan, snow does not fall in March through November.Sea temperature
With an average sea temperature of 27.2°C (81°F), August is the month with the warmest seawater.Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.
Daylight
In Onomichi, the average length of the day in August is 13h and 25min.On the first day of August in Onomichi, Japan, sunrise is at 05:17 and sunset at 19:09. On the last day of the month, sunrise is at 05:39 and sunset at 18:35 JST.
Sunshine
The month with the most sunshine is August, with an average of 10.6h of sunshine.UV index
In Onomichi, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During August, 6 as the daily maximum UV index converts into the following advice:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Notice! Sand and water reflections contribute to a stronger UV exposure.
Frequently asked questions
What time of the year is the hottest in Onomichi?
How hot does it get in Onomichi in August?
What is the average humidity in August in Onomichi?
How much does it rain in Onomichi in August?
When it does not snow in Onomichi?
What month is the sea warmest in Onomichi?
How warm is the water in August in Onomichi?
How many hours of daylight does Onomichi have in August?
What time are sunrise and sunset in August in Onomichi?
What month has the most sunshine in Onomichi?
How long on average sun shines in August in Onomichi?
What is the UV index reading in August in Onomichi?
Average temperature in August
Onomichi, Japan
- Average high temperature in August: 30.8°C
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in August: 22.9°C
The month with the highest average low temperature is August (22.9°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in August
Onomichi, Japan
- Average pressure in August: 1009mbar
The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in August
Onomichi, Japan
- Average wind speed in August: 7.4km/h
The windiest month (with the highest average wind speed) is January (10.5km/h).
The calmest month (with the lowest average wind speed) is June (6.9km/h).
Average humidity in August
Onomichi, Japan
- Average humidity in August: 78%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is May (71%).
Average rainfall in August
Onomichi, Japan
- Average rainfall in August: 36mm
The wettest month (with the highest rainfall) is July (69mm).
The driest month (with the least rainfall) is January (11mm).
Average rainfall days in August
Onomichi, Japan
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in August
Onomichi, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in August
Onomichi, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in August
Onomichi, Japan
- Average sea temperature in August: 27.2°C
The best month for swimming (with the highest average sea temperature) is August (27.2°C).
The coldest month (with the lowest average sea temperature) is February (13.7°C).
Average daylight in August /
Average sunshine in August
Onomichi, Japan
- Average daylight in August: 13h and 2min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in August
Onomichi, Japan
- Average sunshine days in August: 17.4 days
The month with the most sunshine days is May (21.6 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in August
Onomichi, 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 2).
Average cloud cover in August
Onomichi, Japan
- Average cloud cover in August: 32
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Onomichi, Japan
- Average visibility in August: 9km
The month with the highest visibility is January (10km).
The months with the lowest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
Onomichi, Japan
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