Summer business casual is all about finding the perfect balance between staying cool and looking professional. The key lies in choosing lightweight fabrics like linen, cotton, and breathable blends that keep you comfortable without sacrificing polish. Opt for neutral or muted tones such as white, beige, and soft blues that reflect sunlight while maintaining a professional appearance. The right fit is crucial – think tailored but not tight, with flowy blouses, straight-leg pants, and A-line skirts that allow for airflow and ease of movement.