The average temperature in Seoul in April is quite mild at 11.8 °C (53.24 °F). Afternoons can be very mild with average high temperatures reaching 17 °C (62.6 °F). Overnight temperatures are generally cool with an average low of 5 °C (41 °F). The mean diurnal temperature range/ variation in April is 12 °C (21.6 °F). The weather in April is hardly arid with periodic rain. Circa 93.9mm (3.7in) of water precipitates during on average 6 days. The skies in Seoul are a little sunny with an average of a welcome 7:21 of intense solar radiation per day.