May weather forecastJepang, Indonesia

Weather in May

May, the last month of the autumn in Jepang, is another tropical month, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 23.4°C (74.1°F).

Temperature

As May takes hold, the average high-temperature is a still hot 30.9°C (87.6°F), nearly mirroring that of the previous month. Jepang's average low-temperature in the month of May is recorded at a warm 23.4°C (74.1°F).

Heat index

The heat index value for May is estimated at a scorching 41°C (105.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. 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. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In Jepang, during May, the rain falls for 20.7 days and regularly aggregates up to 91mm (3.58") of precipitation. Throughout the year, there are 256 rainfall days, and 1649mm (64.92") of precipitation is accumulated.

Daylight

In Jepang, the average length of the day in May is 11h and 49min.
On the first day of May in Jepang, sunrise is at 05:37 and sunset at 17:29. On the last day of the month, sunrise is at 05:41 and sunset at 17:26 WIB.

Sunshine

In May, the average sunshine is 8.6h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.