Planning for the weather is a good way to make your trip to Paramaribo relaxing and enjoyable, especially when you're splurging. The hottest months are usually September and October with an average temp of 81°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Paramaribo are May, June, July, and April, with each month seeing an average of 12 inches of rainfall.