With a population of around 20,600, Oyo sits in Cuvette, Republic of the Congo. The city operates in the Africa/Brazzaville time zone.
Recent weather here gives a sense of typical conditions: in 2025, Oyo recorded a mean annual temperature of 78°F, ranging from 66°F lows in July to 95°F highs in March, with about 64 inches of precipitation across the year.