Island Climatic Types

There are four climatic types of islands in the Grand Line: Winter Islands, Summer Islands, Spring Islands, and Fall Islands. Each of these islands have their own seasons according to their namesakes, and will not change throughout the entire year. The Red Line is composed of such islands grouped together.

Winter Island
A Winter Island is an island with cold climate. On Winter Islands even in the summer snow is normally seen.
 * Drum Island
 * Karakuri
 * Yukiryuu Island (in New World)
 * Unknown island belonging to Kaido (in New World)
 * Hyoukaidou (anime only)

Summer Island
A Summer Island has hot and dry climate.
 * Arabasta

Spring Island
A Spring Island is blooming with plant life and has nice warm weather.
 * Jaya
 * Unknown island where the On Air Pirates are (in New World)

Fall Island
So far, no Fall Island has been introduced.

Special cases

 * Rusukaina is a forty-eight season island whose climate changes every week.