Linked from
The 19 pages that link to Thermal inertia, each with the reason it gives.
EctothermyRelated: Large body size or water exposure can slow ectotherms' temperature changes.
HibernationRelated: Body size and insulation affect how quickly a hibernator cools and warms.
SeasonsRelated: Land and ocean heat slowly, so temperature seasons lag behind daylight seasons.
Comet nucleusRelated: It influences how quickly the nucleus warms and where activity develops.
Issyk-KulRelated: The lake stores summer heat, helping keep its surface from freezing in winter.