September in Muar averages a daily high of 31.9°C with nights around 23.7°C. Expect roughly 15 wet days totalling 171.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Muar is June–August.
Based on MALACCA, MY (42.8km), 1995–2024. 14 years of September data.