Probably best to stay away from big sweet fragrances built around vanilla, amber, or heavy florals etc. Also combinations of patchouli with florals become nose killers in heat. I like light green fragrances and dry woods the very best in hot weather.
Green examples: Mugler Cologne,Eau de Sisley Campagne, Angelique Sous La Plui, SL Encens et Lavande, Hinoki, Guerlain Aqua Allegoria (whole series), Signoricci, Live Jazz, Erolfa, Hermes Gentian Blanche, and Pamplemouse Rose, Acqua di Bella Baraja, TF Grey Vetiver, CdG Vetiveru, Paul Smith Story.
Dry Woods: Ulrich Lang Nightscape, Kenzo Air, CdG Jaisalmer, Kyoto, Cartier Declaration Essence, HeWood, MPG Bois d' Iles (its a gourmand, but has very dry woods so it works in heat) TF Oud Woods,
There are hundreds like this, basically yes to dry woods and dry green or citrus. No to sweet and heavy elements that cause a fragrance to scream in hot weather. Stay away from sweet vanillas, amber, leather, big patchouli, sweet florals etc.- No.