The best time to visit Toshima is during the spring (late March to May) and autumn (October to November) months.
Spring offers mild temperatures, typically ranging from 15°C to 20°C, and the island's natural landscapes are particularly beautiful as flowers bloom. It's a great time for outdoor activities like hiking and exploring the coastline.
Autumn also provides comfortable weather, with temperatures similar to spring, often between 15°C and 22°C. The humidity is generally lower than in the summer, making it pleasant for walking and enjoying the island's serene environment.