For warmer weather definitely check out the Guerlain Homme line. They're not your stereotypical summer fragrances as they are not aquatics. I own Guerlain Homme Intense and its great for summer nights. While Guerlain Homme has a nice mojito accord (lime, mint, rum) Guerlain Homme Intense sheds more light on the booziness and vetiver with some (slight) sweetness while still having that minty, green vibe. I've heard good things of Guerlain Homme L'Eau as well (grapefruit, mint).