The annual mean temperature is 26.8 °C (80.2 °F); monthly mean temperatures are 19–30 °C (66–86 °F). Summers (March–June) are hot and humid, with temperatures in the low 30s Celsius; during dry spells, maximum temperatures sometime exceed 40 °C (104 °F) in May and June.[78] Winter lasts for roughly two-and-a-half months, with seasonal lows dipping to 9–11 °C (48–52 °F) in December and January.