Sønderborg Castle
Sønderborg Castle is a castle and museum that is part of Museum Sønderjylland. It is a monument on the Kulturstyrelsen register and is one of the 34 sights in Denmark featured on this site.
Planning a visit
The castle is 196 km from Copenhagen. For travelers flying in, Sønderborg Airport is 6 km away, while Odense Hans Christian Andersen Airport is 72 km from the site. Visitors can combine a trip here with visits to Gråsten Palace, which is 12 km away, Glücksburg Castle at 17.5 km, or Hedeby, located 48 km away.
Weather in Sønderborg varies throughout the year. The warmest months are July and August, with daily highs of 21 °C and 20 °C. The coldest period is from December to March, when daily highs range between 3 °C and 6 °C. Rainfall is highest in October with about 81 mm and lowest in April with 37 mm. The castle is open most days from 10:00 to 16:00, though hours extend to 17:00 from June to September. Fees are required for entry, and the site provides wheelchair access.
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 this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
