Other facts from our historical weather data: When is summer in Pacasmayo?The hottest season / summer takes place in January, February, March and April. Which is the warmest month in Pacasmayo? February has an average maximum temperature of 26°C (79°F) and is the warmest month of the year. Which is the coldest month in Pacasmayo? The coldest month is September with an average maximum temperature of 20°C (68°F). Which is the wettest month in Pacasmayo? February tops the wettest month list with 40mm (1.6 in) of rainfall. Which is the driest month in Pacasmayo? July is the driest month with 3mm (0.1 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.