The equatorial and monsoon sub-equatorial, with high humidity. Average temperature everywhere exceeds +25 C. In the north of the hottest months - March-June, in the south - in April, when the temperature is +30-32 C. Most rainy and "cool" month - August. Most rain falls in the Niger Delta (up to 4000 mm. Per year), in the central part of the country - 1000-1400 mm. And in the extreme north-east - only 500 mm. The driest period - the winter when the northeast harmattan wind blows, bringing out the desert regions of the continent daytime heat and the sharp daily fluctuations of temperatures (daytime air warms up to +40 C or more, and at night the temperature drops to +10 C).