Weather in Ibadan

March is the warmest month (average 26.9°C, high 30.7°C) and August is the coolest (average 24.6°C, low 21.4°C). That 2.3°C swing in monthly averages is the first thing to plan around in Ibadan.

Rain is the monsoon runs from April to October, inside an annual total of 1674 mm. The wettest month is September at 310 mm; the driest is December at 19 mm. Ibadan is in Nigeria at 7.4°N. The 2001–2020 NASA POWER daily record describes a monsoon climate with a sharp wet-dry split. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are December, January, and February.

When Ibadan gets wet

The monsoon in Ibadan starts in April and ends in October (April, May, June, July, August, September, and October). September is the core of it at 310 mm. December is the other extreme, with 19 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. September averages 30 such days; December averages 4.

Temperature through the year

Ibadan has a 2.3°C gap between its coolest monthly average (24.6°C in August) and its warmest (26.9°C in March). That is a northern-hemisphere pattern.

Mean high across all twelve months is 29.4°C and mean low is 21.9°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

What stands out month by month

March is the warmest month. Afternoon highs average 30.7°C and nights settle near 23.2°C, with 66 mm of rain. The monsoon opens in April. Expect 126 mm and 24 rainy days, with nights around 23.4°C. May stands apart from the months beside it: 29.3°C / 23.2°C and 180 mm. June: 28.4°C high, 22.4°C low, 242 mm rain, 90% humidity. The year bottoms out in August. Plan for 21.4°C at night and 27.9°C in the afternoon.

September is the wettest month — 310 mm and 30 rainy days, with 90% humidity. October closes the monsoon: 211 mm over 28 rainy days, then the calendar dries. November brings 54 mm and 13 rainy days; temperatures run from 22.0°C to 29.7°C. December is the driest month, averaging only 19 mm across 4 rainy days. Highs sit near 30.1°C.

Best months to visit Ibadan

The three months with the highest comfort score are December, January, and February: December (25.0°C average, 19 mm, 76% humidity); January (24.8°C average, 23 mm, 73% humidity); February (26.5°C average, 26 mm, 80% humidity). Those months sit across the year end, so they are listed in season order rather than January-to-December. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the monsoon itself — fewer crowds, greener landscape, heavier rain — aim at April–October instead of the score.

How Ibadan compares inside Nigeria

Lagos is about 117 km away: Ibadan is 1.0°C cooler than Lagos in its hottest month and 127 mm wetter over the year than Lagos. Lagos’s wettest month is September (245 mm) versus September here.

Benin City is about 222 km away: Ibadan is about as warm as Benin City at the hot peak and 52 mm drier over the year than Benin City. Benin City’s wettest month is September (301 mm) versus September here.

Onitsha is about 346 km away: Ibadan is about as warm as Onitsha at the hot peak and a similar annual rainfall (1705 mm in Onitsha). Onitsha’s wettest month is September (315 mm) versus September here.