OWERRI, NIGERIA

Tropical monsoon climate, occasionally also known as a tropical wet climate or tropical monsoon and trade-wind littoral climate in climate classification, is a relatively rare type of climate. Tropical monsoon climates have monthly mean temperatures above 18°C (64°F) in every month of the year and feature wet and dry seasons, as Tropical savanna climates do. Unlike tropical savanna climates however, a tropical monsoon climate's driest month sees less than 60 mm (2.36 in) of precipitation. Also a tropical monsoon climate tends to see less variance in temperatures during the course of the year than a tropical savanna climate. This climate has a driest month which nearly always occurs at or soon after the "winter" solstice for that side of the equator.

The Köppen Climate Classification subtype for this climate is "Am". (Tropical Monsoon Climate).

The average temperature for the year in Owerri is 79.2°F (26.2°C). The warmest month, on average, is March with an average temperature of 82.0°F (27.8°C). The coolest month on average is July, with an average temperature of 77.0°F (25°C).

The average amount of precipitation for the year in Owerri is 88.7" (2253 mm). The month with the most precipitation on average is September with 14.3" (363.2 mm) of precipitation. The month with the least precipitation on average is December with an average of 0.7" (17.8 mm). There are an average of 136.6 days of precipitation, with the most precipitation occurring in September with 20.4 days and the least precipitation occurring in January with 2.0 days.