If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Oromocto: The hottest months are usually July and August with an average temp of 63°F, while the coldest months are January and February with an average of 23°F. The snowiest months in Oromocto are March, January, April, and October, with each month seeing an average of 11 inches of snowfall.