The climate is constantly mild, with average daytime temperatures around 16 °C (61 °F) in winter and around 20 °C (68 °F) in summer, South Africa's climatic conditions generally range from Mediterranean in the southwestern corner of South Africa to temperate in the interior plateau, and subtropical in the northeast. A small area in the northwest has a desert climate. Most of the country has warm, sunny days and cool nights. Summer is the rainy season from November to March.