Question:
I like G Man's recommendation, wear it for those (John Travolta Style)SUUUUUMMMMMEEEEEEER... NIIIIIIIIIIIIIIIIIIIIIIIIIIIIIGHTS.
- Rich

Answer:
It's not suited to warm weather for two reasons. 1) it is not a warm weather scent and 2) it is too aggressive of a scent. If one of the statements was not true, you could try it in warm weather - otherwise you will offend.

Answer:
I'm a big fan of the "anything can be worn at any temperature in proper dosages" mindset.
With Egoiste, "proper dosage" in summer means one spray shared between both wrists. But then the basenotes are barely detectable. It's tricky to apply in summer so that the topnotes don't knock you flat and the basenotes are still there after 4 hours. Splitting the difference with a fragrance that transforms so completely is nearly impossible.