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 Uluberiya: The hottest months are usually April and May, with an average temperature of 31°C, while the coldest months are January and December, with an average of 23°C. The rainiest months in Uluberiya are August, July, September and June, with each month seeing an average of 279 mm of rainfall.