Overview: RovinjRovinj (Croatia) in general has a mild climate. Temperatures during the day are in the range from 8 °C (46 °F) in January to 29 °C (84 °F) in July. The driest month is July with just 6 days of rain, on the contrary, the month when it rains the most is November with 10 days of rain. Sea temperatures are in the following range: 10 °C (50 °F) in February to 25 °C (77 °F) in August. The highest night temperatures could be experienced in July with 21 °C (69 °F), the lowest in February with 3 °C (37 °F).