If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Lae: The hottest months are usually January and February, with an average temperature of 25°C, while the coldest months are July and August, with an average of 23°C. The rainiest months in Lae are April, March, June and December, with each month seeing an average of 657 mm of rainfall.