Weather and perfume
Why does perfume smell different in summer
A perfume can seem different in summer because your wearing context changes: warmth, activity, application and time spent indoors may all differ. The observation does not by itself prove the bottle has changed.
A HUME Fragrance buying guide
Check the routine
Note whether you used the same exact product and applicator. Different versions or amounts complicate the comparison.
Describe the difference
Brighter, sweeter or less noticeable are separate observations. Write what changed instead of recording only that summer ruined the scent.
Review storage separately
Bottle care is different from wear. Follow storage guidance and avoid prolonged heat or direct light rather than diagnosing damage from one trial.
Try this before you buy
Compare your summer routine with an earlier wear before deciding whether the fragrance itself has altered.