Other facts from our historical weather data: Does Navojoa have a dry season? Yes, the months of January, February, March, April, May and June are very dry. Which is the hottest month in Navojoa? June has an average maximum temperature of 39°C (102°F) and is the hottest month of the year. Which is the coolest month in Navojoa? The coolest month is January with an average maximum temperature of 28°C (82°F). Which is the wettest month in Navojoa? August tops the wettest month list with 117mm (4.6 in) of rainfall. Which is the driest month in Navojoa? May is the driest month with 1mm (0 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.