Sønderborg weather by month & the best time to visit
🇩🇰 Denmark · seaside town · oceanic / maritime climate
The best time to visit Sønderborg is July — its sunniest month (Sunshine Score 74/100), with August close behind. Sønderborg averages about 1,559 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 76 mm of rain in July.
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- Sun hours / year
- 1,559
- Sunniest month
- July
- Peak score
- 74/100
- Rain / year
- 730 mm
- Snow / year
- ≈32 cm
- Midday UV at peak
- 5 (moderate)
- Sea at warmest
- 19°C / 66°F
- Population
- 28k
- Elevation
- 6 m
When is the best time to visit Sønderborg?
For sunshine, the best time to visit Sønderborg is July, then August. The dullest month is January (0/100, 63 mm of rain). The full month-by-month picture is in the table below.
How sunny is Sønderborg?
Sønderborg isn't a sunny place by world standards: about 1,559 hours of sunshine a year. 74 Sunshine Score points separate July (74) from January (0), so the month you pick matters. It ranks #11 of 11 destinations in Denmark for annual sunshine, below the national median of 1,688 hours. The year's 730 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | 0° / 32°F | 63 mm | 0 | 4° / 39°F |
| February | 0 | 3° / 37°F | 0° / 32°F | 51 mm | 1 | 4° / 39°F |
| March | 0 | 6° / 43°F | 1° / 34°F | 46 mm | 1 | 5° / 41°F |
| April | 13 | 10° / 50°F | 4° / 39°F | 36 mm | 3 | 8° / 46°F |
| May | 46 | 15° / 59°F | 8° / 46°F | 50 mm | 4 | 13° / 55°F |
| June | 62 | 18° / 64°F | 12° / 54°F | 69 mm | 5 | 18° / 64°F |
| July | 74 | 21° / 70°F | 14° / 57°F | 76 mm | 4 | 19° / 66°F |
| August | 72 | 21° / 70°F | 15° / 59°F | 82 mm | 4 | 19° / 66°F |
| September | 57 | 17° / 63°F | 12° / 54°F | 60 mm | 3 | 18° / 64°F |
| October | 31 | 13° / 55°F | 8° / 46°F | 69 mm | 1 | 14° / 57°F |
| November | 0 | 8° / 46°F | 5° / 41°F | 63 mm | 0 | 9° / 48°F |
| December | 0 | 4° / 39°F | 1° / 34°F | 65 mm | 0 | 6° / 43°F |
Sea temperature in Sønderborg by month
The sea off Sønderborg is warmest in July at around 19°C / 66°F, and coolest in January at 4°C / 39°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Sønderborg on the interactive sunshine globe →
Nearby places for sunshine
- Billund Denmark · 95 km · best in Jul · 1,625 h sun/yr
- Hamburg Germany · 149 km · best in Jun · 1,579 h sun/yr
- Aarhus Denmark · 158 km · best in Jul · 1,688 h sun/yr
- Copenhagen Denmark · 195 km · best in Jul · 1,702 h sun/yr
- Bremen Germany · 223 km · best in Jun · 1,575 h sun/yr
- Malmö Sweden · 236 km · best in Jul · 1,701 h sun/yr
Nearest destinations
- Odense Denmark · 66 km · 1,677 h sun/yr · best in Jul
- Sylt Germany · 93 km · 1,558 h sun/yr · best in Aug
- Esbjerg Denmark · 100 km · 1,623 h sun/yr · best in Jul
- Heide Germany · 107 km · 1,552 h sun/yr · best in Jul
- Lübeck Germany · 142 km · 1,584 h sun/yr · best in Jun
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