The best time to visit Itanagar is in winters as the atmosphere of the place becomes really pleasant. Summer lasts between March and June and temperature hovers between 15°C and 30°C. Monsoon arrives in July and stays till September. The place experiences heavy rainfall during this season and prefer to avoid the season. Winter starts in October and remains up to February. The climate is cool and pleasant and the temperature remains between 24°C and 5°C. The best months for Itanagar vacation are the months of October to March. These months experience presence of cool breeze coming from the foothills of Himalayan.