How far in advance should I book accommodation in Varanasi for Dev Deepawali?

At least 4–6 weeks in advance, ideally longer. Guesthouses and hotels near the ghats (Assi Ghat area, Bengali Tola, Godaulia lanes) are among the most popular and fill up first. If you are visiting in a group or require specific accommodation, book 2–3 months ahead. Arrive in Varanasi a day before Kartik Purnima to avoid travel-day stress.