September in Neyveli averages a daily high of 34.6°C with nights around 25.3°C. Expect roughly 7 wet days totalling 57.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Neyveli is December–February.
Based on CUDDALORE, IN (34km), 1995–2024. 19 years of September data.