June introduces the onset of summer monsoons in
Cheongju, with high humidity and a boom in rain showers. Despite the diminished sunshine hours as compared to
May, the city experiences the year's highest temperatures. Compared to May, temperature lows rise dramatically to 17.6°C (63.7°F). With considerably long days, there's ample time for residents to enjoy the warmth of the sun. June stands as a testament to the city's humid and rainy summer season.
Temperature
In Cheongju, stepping into June brings a gentle temperature nudge, moving slightly up from May's 24.4°C (75.9°F) to a still warm 27.9°C (82.2°F). Throughout the June nights, Cheongju encounters a low-temperature of 17.6°C (63.7°F).
Heat index
June's average heat index is estimated at a tropical 30°C (86°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
The average relative humidity in June is 68%.
Rainfall
In Cheongju, in June, it is raining for 9.6 days, with typically 144mm (5.67") of accumulated precipitation. In Cheongju, during the entire year, the rain falls for 113.1 days and collects up to 1239mm (48.78") of precipitation.
Daylight
June has the longest days of the year, with an average of 14h and 36min of daylight.
On the first day of the month, sunrise is at 05:12 and sunset at 19:43. On the last day of June, sunrise is at 05:14 and sunset at 19:52 KST.
Sunshine
The average sunshine in June is 6.5h.
UV index
The average daily maximum UV index in June is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 9 in June translates into this advice:
Always safeguard yourself; without protection, skin and eyes can get damaged instantly. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Boost your sun resistance with garments that are densely woven yet spacious. Avoid direct sun exposure for long periods, especially if prone to burns. Always apply a sunscreen with at least a 30 SPF.