Meek CL, Devoy B, Simmons D, et al. - Via identifying a retrospect cohort of 23,735 women consecutively delivering singleton, live-born term infants in a single tertiary obstetrics centre in the UK (2004–2008), experts aspired to explore if the neonatal and delivery outcomes of gestational diabetes vary seasonally in the context of a relatively cool temperate climate. In total, 985 met the diagnostic criteria for gestational diabetes. Findings revealed that gestational diabetes incidence differed by 30% from peak incidence to lowest incidence. Even in a relatively cool temperate climate, a substantial seasonal variation was noted in gestational diabetes incidence and maternal-fetal outcomes. The highest average birth weight and highest risk of cesarean emergency delivery occurs in women who deliver during the spring months. Recognizing seasonal variation in neonatal and delivery outcomes offers a new opportunity to individualize approaches to gestational diabetes management.