The pleasant window runs roughly October to June. April to June is peak season, with warm days (around 20-25C), busy roads, and the annual Summer Festival and flower show at the Botanical Gardens in May, so book accommodation weeks ahead. September to November is the sweet spot: green hills after the monsoon, fewer crowds, and cool but comfortable weather. Nights are chilly year-round (often 5-10C in winter), so pack layers whatever the month. The southwest monsoon brings heavy rain and landslide-prone roads roughly June to August, when travel can be disrupted.

The nearest major airport is Coimbatore (about 85 km, 3 to 4 hours by road via the Nilgiri ghat), and the most scenic arrival is the Nilgiri Mountain Railway from Mettupalayam to Ooty (about 5 hours, reserve well ahead). By road, taxis and the winding NH181 with its 36 hairpin bends connect you from Coimbatore, Mysuru, and Bengaluru. Within Ooty, the compact center around Charing Cross is walkable, but hills are steep; use metered autorickshaws (agree the fare first), local taxis, or ride-hailing where available. Traffic and parking are painful during peak season, so avoid self-driving into the town center on weekends.