It’s common knowledge that a pair of swim shorts goes far better with the summer season than a suit. However, that’s not to say the warmer months don’t cater to the man who needs to dress with a touch of formality. The trick to staying cool when the weather’s not isn’t just in choosing the right type of suit, but the right textiles. Tightly woven fabrics such as twill and artificial fibers may be less prone to creasing, but they restrict the amount of air that can circulate through the garment, making ultra-lightweight open-weave linen, seersucker or hopsack a far better choice. It’s also wise to pay attention to construction. Slightly relaxed-cut, unstructured jackets not only remove the sweat-inducing insulation of padding and linings, but they also speak more to the Riviera spirit of summer, as do earth and pastel tones, which never fail to look good next to tanned skin.