Sønderborg
City in Denmark
Sønderborg is a city in Denmark with a population of about 27,600. It is located 196 kilometers from Copenhagen. Visitors come to the area to see historic sites such as Sønderborg Castle and Gråsten Palace.
What to see
The city and its surroundings feature notable historic landmarks. Sønderborg Castle is located within the city. A short distance away is Gråsten Palace.
When to go
The warmest weather occurs from June through August, with daily highs ranging between 18 °C and 21 °C. These months generally see 11 to 14 days of rain. Spring, specifically April and May, offers milder temperatures between 11 °C and 15 °C with less frequent rain than the summer months. Autumn and winter bring cooler conditions, with daily highs dropping to 3 °C in January. November and October are the wettest months, experiencing rain on about 16 to 17 days.
Getting there
Sønderborg Airport is the nearest facility, located 6 kilometers from the city. For further travel options, Odense Hans Christian Andersen Airport is 71 kilometers away.
Top sights in Sønderborg
Weather by month
The warmest month is July, with an average high of 21 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 3 | 4 | 7 | 11 | 15 | 18 | 21 | 21 | 17 | 12 | 7 | 4 |
| Average low, °C | 0 | 0 | 1 | 4 | 8 | 11 | 14 | 14 | 12 | 8 | 4 | 1 |
| Rainfall, mm | 69 | 51 | 57 | 37 | 55 | 66 | 75 | 74 | 70 | 81 | 65 | 64 |
| Rainy days | 15 | 12 | 11 | 10 | 10 | 11 | 14 | 13 | 12 | 16 | 17 | 15 |
Temperatures and rainfall: 1981–2010 averages for Sønderborg (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.