The best time to go to Nigei Island is during the summer months, specifically from June to September, when the weather is at its most pleasant.
During this period, you can expect warmer temperatures and less rainfall, which is ideal for enjoying the island's outdoor activities. The days are longer, allowing for extended exploration of the coastline, forests, and wildlife. This is particularly appealing for couples and families looking to make the most of their time outdoors.
The shoulder seasons of late May and early October can also be good, offering fewer crowds and potentially lower prices, though the weather can be more unpredictable. For those who prioritize a tranquil experience and don't mind cooler temperatures, these months can be a good option.