5 天之前 · Macau lies just within the tropics, and it has a monsoonal (wet-dry) climate. Four-fifths of its total average annual rainfall of 83 inches (2,120 mm) falls within the summer rainy season (April–September), when the southwest monsoon blows. Temperatures reach 84 °F (29 °C) in the summer and fall to 59 °F (15 °C) in winter.