Thanjavur has a tropical climate with hot summers, wet monsoons and pleasant winters. The town which is called the Granary of South India, lies in the Cauvery Delta region, with a luxuriantly rich fertile soil where paddy is grown in abundance. There are a number of places you ought to visit in Thanjavur and you will have a good time if you choose the spot on season to travel so you can indulge in unrestricted sightseeing.

The best months and weather to visit Thanjavur would be from December to March, when it is winter.

Summers are typically hot and dry. The onset of summer i.e. the month of March is quite good for travel, though the months of April and May are peak summer months and generally considered off season. There may be sporadic mango showers. Keep an umbrella handy. Visit the Sherbet shop in Keezhavaasal for their special summer drinks. Bite into a luscious, juicy Cucumber fruit that hits the market once summer dawns on Thanjavur.  The average temperature is 26°C to 37°C.

The southwest monsoon rains and particularly the northeast monsoon are quite heavy in Thanjavur. November is the wettest month of the year. Heavy rains might cause flooding in low lying areas and occasional cyclonic thunderstorms. Thanjavur and its neighbourhood have many a number of monuments that need a relaxed tour and not make you dash for cover over a sudden downpour. Hence monsoon may not be a recommended season to go sightseeing in Thanjavur. The average temperature is 25°C-34°C.

Winter months are the most ideal to visit Thanjavur. The days are warm, though not humid and nights are cool. Thanjavur has a lush abundance of greenery and winter is the best period to photoshoot the most amazing natural wonders of the region. Temperature averages between 21°C-31°C. The Delta region is a haven for birds migrating in for winter. If you are visiting Thanjavur during winter months, do check out the sanctuaries and the wetlands for the birds!