September in Ooty averages a daily high of 32.5°C with nights around 22.5°C. Expect roughly 8.3 wet days totalling 126.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ooty is December–January.
Based on COIMBATORE PEELAMED, IN (57.3km), 1995–2024. 20 years of September data.