Lagos has a tropical wet and dry climate (Köppen climate classification Aw) that borders on a tropical monsoon climate (Köppen climate classification Am). Lagos experiences two rainy seasons, with the heaviest rains falling from April to July and a weaker rainy season in October and November. There is a brief relatively dry spell in August and September and a longer dry season from December to March. Monthly rainfall between May and July averages over 400 mm (15.7 in), while in August and September it is down to 200 mm (7.9 in) and in December as low as 25 mm (1.0 in). The main dry season is accompanied by harmattan winds from the Sahara Desert, which between December and early February can be quite strong. The highest maximum temperature ever recorded in Lagos was 37.3 degrees Celsius and the minimum 13.9 degrees Celsius
