September in İskenderun averages a daily high of 31°C with nights around 24.5°C. Expect roughly 7.2 wet days totalling 62.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit İskenderun is April–June.
Based on ISKENDERUN, TU (2.3km), 1995–2024. 21 years of September data.