August weather forecast
Itoman, Japan

The last month of the summer, August, is also a moderately hot month in Itoman, Japan, with an average temperature fluctuating between 28.3°C (82.9°F) and 29.4°C (84.9°F).

Temperature

In Itoman, the highest average temperatures are observed in August, with a high of 29.4°C (84.9°F) and a low of 28.3°C (82.9°F).

Heat index

Throughout August, the heat index is estimated at a torrid 36°C (96.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. 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 highly critical to babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. 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. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August is 81%.

Rainfall

In Itoman, during August, the rain falls for 20.8 days and regularly aggregates up to 169mm (6.65") of precipitation. In Itoman, during the entire year, the rain falls for 226.7 days and collects up to 1392mm (54.8") of precipitation.

Sea temperature

August is the month with the warmest seawater, with an average sea temperature of 28.7°C (83.7°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

In Itoman, Japan, the average length of the day in August is 13h and 2min.
On the first day of August in Itoman, sunrise is at 05:55 and sunset at 19:16. On the last day of the month, sunrise is at 06:09 and sunset at 18:50 JST.

Sunshine

In Itoman, the average sunshine in August is 9h.

UV index

June through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 7 suggests this advice:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Warning! The Sun's UV rays intensify with reflections from sand and water.