Oct to Jan.. and best part of Tarkarli is Scuba Diving.. avoid to visit in Rainy season as they might be close during rainy season, also you can visit tsunami island which is famous for water sports.
Winter is the best season for visiting Tarkarli. The months from October to March is when Tarkarli becomes an ideal holiday destination. Monsoons can also be a favourable time for planning a trip, although the heavy rainfall might ruin your plans.