Other facts from our historical weather data: Which months have the greatest rainfall in Barra de Chapagua? Most rainfall (rainy season) is seen in January, October, November and December. Which is the hottest month in Barra de Chapagua? September has an average maximum temperature of 32°C (90°F) and is the hottest month of the year. Which is the coolest month in Barra de Chapagua? The coolest month is January with an average maximum temperature of 28°C (82°F). Which is the wettest month in Barra de Chapagua? October tops the wettest month list with 274mm (10.8 in) of rainfall. Which is the driest month in Barra de Chapagua? April is the driest month with 43mm (1.7 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.