Climate - Rønne (Denmark)

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The climate of Rønne is Baltic, that is to say, relatively continental, with cold winters and mild to pleasantly warm summers.
The city is located on the island of Bornholm, which lies to the east of the main islands of Denmark, and to the south-east of Sweden, and has a relatively dry and sunny microclimate.
Given the latitude (55°06'N), the white nights, in which the sun sets but it does not get completely dark even at midnight, occur from June 9 to July 3.
Although winter is not very cold for the latitude, it is often humid, windy and rainy. Snow is quite frequent, although generally not abundant. Even in spring, until April or the first half of May, there is often cold and unstable weather.
Occasionally, there may be cold waves in winter, in which the temperature can drop below -10 °C (14 °F). During the coldest winters, the temperature dropped to -15 °C (-4 °F) in March 1987 and January 2003.
In summer, short hot periods are possible. The temperature reached 32 °C (89.5 °F) in July 1994 and 31 °C (88 °F) in August 2014.
The average temperature of the coldest month (February) is of 0.9 °C (34 °F), that of the warmest month (July) is of 18.2 °C (65 °F). Here are the average temperatures.

Precipitation amounts to 485 millimeters (19.1 inches) per year: it is therefore quite scarce. It ranges from 25 mm (1 in) in the driest month (February) to 55 mm (2.2 in) in the wettest (September). Here is the average precipitation.

On average, there are around 1,800 sunshine hours per year. In summer, also due to the length of the days, the sunshine amount is quite good. Here are the average sunshine hours per day.

The sea temperature ranges between 3 °C (37 °F) and 18 °C (64 °F). So, it never becomes warm for swimming (if not for Northern Europeans). Here are the average sea temperatures.

Best Time

The best time to visit Rønne is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.