South Korea is experiencing strong early-summer heat and high ultraviolet radiation during the solar term known as Ha Ji today [1].
This period represents a critical window for public health as the combination of peak sunlight and rising temperatures increases the risk of skin damage and heat-related illness. The intensification of radiation during this specific solar term requires immediate preventative measures for those outdoors.
Weather caster Lee Hye-min said the heat is becoming more prevalent as the country observes Ha Ji, the point in the year when the sun is at its highest altitude and days are longest [1]. According to Lee, this period marks the beginning of the season where heat begins to build up significantly [1].
Forecasts indicate that the nationwide UV index will be at a "very high" level [1]. Conditions are expected to be more severe in the southern regions of the country, where the UV index is projected to reach the "danger" level [1].
Health officials said the intensity of the sun is such that skin damage can occur within tens of minutes of exposure [1]. To mitigate these risks, residents are advised to use protective gear, including hats, and sunglasses, to shield themselves from the direct rays.
An anchor for YTN News said that under the strong sunlight of the solar term, early-summer heat is currently prevailing [1]. The weather segment emphasized the need for vigilance as the country transitions into the more oppressive temperatures of mid-summer.
“The nationwide UV index will be at the "very high" level”
The arrival of Ha Ji signals a seasonal shift in the Korean peninsula, moving from spring volatility to sustained summer heat. Because the sun reaches its highest solar altitude during this term, the angle of incidence maximizes UV penetration, making the 'danger' levels in southern regions a significant short-term public health concern rather than a general seasonal trend.
