Background: The incidence of reduction mammoplasty has been steadily increasing over recent decades. Surgical site infections (SSIs) represent a common yet preventable complication across surgical disciplines. Studies across various surgical specialties have indicated a seasonal influence on SSIs, primarily correlated with higher temperatures and humidity. However, there remains a scarcity of clear data regarding the seasonal effects on complications specifically in breast surgery. Methods: We conducted a retrospective review encompassing all patients who underwent primary bilateral reduction mammoplasties at our institution between 1 June 2016, and 1 September 2019. The data collected included patient demographics, surgical details, and postoperative complications. The rates of SSIs and wound healing disturbances (WHDs) were correlated with local meteorological data at the time of surgery. Results: A total of 808 patients (1616 breasts) met the inclusion criteria. The mean age was 41 ± 14.8 years, with a mean BMI of 28.9 ± 5.2 kg/m2 and a mean follow-up duration of 8.9 ± 9.8 months. Nineteen cases (2.35%) of surgical site infections and 77 cases (9.52%) of wound healing disturbances were reported. No statistically significant increase in the risk of SSIs (p = 0.928) or WHDs (p = 0.078) was observed during the warmer months of the year. Although no specific risk factors were identified for surgical site infections, both resection weight (p < 0.001) and diabetes mellitus (p = 0.001) demonstrated increased risks for wound healing disturbances. Conclusions: While seasonal temperature variations have been shown to impact SSIs and WHDs in body contouring procedures, our findings suggest that breast reduction surgery may not be similarly affected.
