Burkina Faso's climate is sunny, hot, dry, and dusty. The hot season is from mid-February to June, when maximum temperatures exceed 104°F in the shade. The rainy season typically lasts from June to September. The first rains, called the mango rains, usually begin in May/June and provide some relief from the heat and dust. Annual rainfall ranges from about 10 inches in the extreme north to nearly 40 inches in the south. Temperatures begin to moderate in late September/early October as the rainy season winds down. Mid-November to mid-February is the cool season with high temperatures in the 80s and lows in the 60s. The Harmattan, a hot, dust-laden wind from the Sahara, often blows in January and February, leading to reduced visibility and temporarily unpleasant living conditions.