Hot-weather choices
Perfume oil for hot weather
Perfume oil can be evaluated for warm weather, but an oil carrier alone does not make it cooling, sun-protective or automatically suitable for your intended use. Follow the finished product's directions and choose by actual comfort.
A HUME Fragrance buying guide

Check the intended application
Use a labelled personal perfume oil rather than a raw or home-scent material. Read the specific areas and conditions of use stated by the maker.
Test texture and scent separately
Application feel and fragrance preference are different observations. A smooth carrier does not prove the smell will remain quiet in a warm shared space.
Plan storage while out
Secure the closure and follow storage guidance. Avoid leaving the product in direct sun or a hot vehicle while treating it as a convenient portable format.
Try this before you buy
Record application feel, scent enjoyment and presence as separate parts of your warm-weather test.