PORTO VELHO, RONDONIA

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 Porto Velho is 78.1°F (25.6°C). The warmest month, on average, is September with an average temperature of 79.2°F (26.2°C). The coolest month on average is July, with an average temperature of 76.3°F (24.6°C).

The highest recorded temperature in Porto Velho is 105.6°F (40.9°C), which was recorded in August. The lowest recorded temperature in Porto Velho is 45.3°F (7.4°C), which was recorded in July.

There are an average of 106.0 days of precipitation, with the most precipitation occurring in January with 16.0 days and the least precipitation occurring in July with 1.0 days.

In terms of liquid precipitation, there are an average of 106.0 days of rain, with the most rain occurring in January with 16.0 days of rain, and the least rain occurring in July with 1.0 days of rain.