Ibadan, one of Nigeria's largest cities, sits inland in the southwest of the country, spread across a range of low hills in the forest belt at approximately 7.38°N, 3.95°E. It has a tropical savanna climate (Köppen Aw) — warm and humid — with the double rainy season characteristic of southwestern Nigeria and a distinct dry season.

There is little seasonal change in temperature: it stays warm year-round, with highs around 30–33°C, hottest in February and March before the rains. The main rainy season runs from March to July, with heavy afternoon thunderstorms; a short dry break follows in August, and a second, weaker wet spell comes in September and October.

There is no true winter, but the dry season from November to February brings warm, sunny days and cooler nights, with lower humidity and little rain. The Harmattan, a dry, dusty wind off the Sahara, reaches Ibadan between December and February, hazing the sky and briefly bringing welcome relief from the year-round humidity.

Ibadan receives on the order of 1,200–1,400 mm of rain a year, in a double-peaked pattern typical of southwest Nigeria — a main rainy season from March to July and a secondary one in September and October, separated by a short drier August. Live rainfall, humidity, and pressure readings for the city are shown in the panels above.

Ibadan's double rainy season, split by the short 'August break', is characteristic of southwestern Nigeria's forest belt. Its inland position makes it slightly less humid than coastal Lagos, and the Harmattan haze of midwinter brings the only genuinely dry air of the year to this sprawling hill city.

To follow any single measurement in Ibadan more closely, use our live instruments: the online barometer for atmospheric pressure, the thermometer for temperature, the hygrometer for humidity, the anemometer for wind speed, the wind vane for wind direction, and the rain gauge for rainfall.