Planning for the weather is a good way to make your trip to Dubrovnik relaxing and enjoyable, especially when you’re splurging. The hottest months are usually August and July, with an average temperature of 24°C, while the coldest months are January and February, with an average of 10°C. The rainiest months in Dubrovnik are November, December, October and January, with each month seeing an average of 202 mm of rainfall.