August weather forecast
Seoul, South Korea

August maintains the peak of summer in Seoul, with sultry weather and intense rain showers. It is a typical sight to see locals sipping on cold buckwheat noodles to keep cool. Outdoor enthusiasts will relish in the magnificent sunsets along the Han River despite the high humidity. It is the city's hottest month, with the highest mean temperature reaching up to 29.6°C (85.3°F). As September approaches, signs of autumn begin to peek through the summer haze.

Temperature

August, with an average high of 29.6°C (85.3°F) and a low of 22.4°C (72.3°F), signifies the warmest month of the year.

Heat index

For most parts of August, the heat index is computed to be a torrid 35°C (95°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In August, the average relative humidity in Seoul is 75.6%.

Rainfall

In Seoul, in August, it is raining for 14.6 days, with typically 364mm (14.33") of accumulated precipitation. In Seoul, during the entire year, the rain falls for 108.8 days and collects up to 1451mm (57.13") of precipitation.

Daylight

In August, the average length of the day in Seoul is 13h and 35min.
On the first day of the month, sunrise is at 05:36 and sunset at 19:40. On the last day of August, in Seoul, sunrise is at 06:01 and sunset at 19:03 KST.

Sunshine

The average sunshine in August is 4.9h.

UV index

In August, the average daily maximum UV index in Seoul is 9. A UV Index reading of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 9 translates into these guidelines:
Always be careful, as unprotected skin and eyes might burn in no time. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Even when it's cloudy, ensure the generous application and frequent reapplication of a sunscreen with at least 30 SPF, particularly post swim or outdoor activity.