October to February is the ideal period with pleasant weather, lower humidity, and comfortable temperatures (15-28°C). This season aligns with major festivals including Durga Puja (September-October) and Kolkata Book Fair (January-February). March to May experiences high temperatures (28-38°C) and is less comfortable for sightseeing. June to September brings monsoon rains, making outdoor activities challenging but offering lush green landscapes.
Peak Tourist Season: October-November sees maximum visitors when weather is optimal and festivals occur. Book accommodations in advance during this period.