In July, Seongnam-si typically sees daytime highs of 28.3°C and overnight lows around 21.1°C. Compared to the annual average high of 16.1°C, July runs +12.2°C.
July in Seongnam-si averages a daytime high of 28.3°C and an overnight low of 21.1°C.
July runs +12.2°C compared to Seongnam-si's annual average high of 16.1°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.3°C and cooler evenings around 21.1°C.