August weather forecast
Shimabuku, Japan

August, the last month of the summer in Shimabuku, is another warm month, with temperature in the range of an average low of 28.2°C (82.8°F) and an average high of 29.5°C (85.1°F).

Temperature

The warmest month is August, with an average high-temperature of 29.5°C (85.1°F) and an average low-temperature of 28.2°C (82.8°F).

Heat index

For August, the heat index is calculated to be a torrid 36°C (96.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in 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. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In August, the average relative humidity is 81%.

Rainfall

In Shimabuku, during August, the rain falls for 19.1 days and regularly aggregates up to 149mm (5.87") of precipitation. Throughout the year, in Shimabuku, there are 215.5 rainfall days, and 1300mm (51.18") of precipitation is accumulated.

Daylight

The average length of the day in August in Shimabuku is 13h and 3min.
On the first day of August, sunrise is at 05:54 and sunset at 19:15. On the last day of the month, sunrise is at 06:08 and sunset at 18:49 JST.

Sunshine

The average sunshine in August in Shimabuku is 9.1h.

UV index

The months with the highest UV index in Shimabuku are June through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in August transforms into this advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.