Planning for the weather is a good way to make your trip to Oyo relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and February, with an average temperature of 27°C, while the coldest months are November and October, with an average of 26°C. The rainiest months in Oyo are October, November, April and December, with each month seeing an average of 198 mm of rainfall.