August weather forecast
Onaga, Japan

The last month of the summer, August, is another warm month in Onaga, Japan, with an average temperature ranging between min 28.3°C (82.9°F) and max 29.4°C (84.9°F).

Temperature

The month of August sees the highest average temperatures, reaching 29.4°C (84.9°F) at the peak and 28.3°C (82.9°F) at the low.

Heat index

During August, the heat index is evaluated at a very hot 36°C (96.8°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Heat index determinations are made taking into account the shade and light air movements. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In August, the average relative humidity is 81%.

Rainfall

In August, in Onaga, the rain falls for 20.8 days. Throughout August, 169mm (6.65") of precipitation is accumulated. Throughout the year, there are 227.4 rainfall days, and 1405mm (55.31") of precipitation is accumulated.

Daylight

In Onaga, the average length of the day in August is 13h and 3min.
On the first day of August, sunrise is at 05:54 and sunset at 19:16. On the last day of the month, sunrise is at 06:08 and sunset at 18:49 JST.

Sunshine

In August, the average sunshine is 9h.

UV index

The months with the highest UV index are June through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.