The maximum temperature in Rønne is on average 11°C over the year, with values generally ranging between 3°C in February and 19°C in August. About 795 mm of precipitation falls per year, with a minimum of 30 mm in April and a maximum of 108 mm in August.
The climate is suitable for a trip to Rønne in: June, July, August, September and October. Nevertheless, the months when the weather is really pleasant are June, July, August and September.
For swimming, the most favorable period for water temperature is July and August, with a water temperature above 16.9°C.
However, the best time to fully enjoy the beach and swimming is June, July and August.
In terms of crowd levels, the quietest periods are in January, February and March, while crowding is high in May, June, August, September and July.