noun
seasonal variation
Refers to changes that occur depending on the season, often used in scientific or descriptive contexts.
この地域では、気温の季節変異が大きい。
In this region, the seasonal variation in temperature is large.
動植物の行動には季節変異が見られる。
Seasonal variation can be observed in the behavior of plants and animals.
Compound of 季節 (season) and 変異 (variation, change).