October in Arrah averages a daily high of 32.4°C with nights around 22°C. Expect roughly 3.8 wet days totalling 28.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Arrah is December–February.
Based on PATNA, IN (44.1km), 1995–2024. 10 years of October data.