Planning for the weather is an important factor for making your trip to Herceg Novi a success, especially when you’re splurging. The hottest months are usually August and July, with an average temperature of 23°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Herceg Novi are November, January, December and March, with each month seeing an average of 256 mm of rainfall.