Denmark in September: where is it warmest?
In September, Odense is the warmest place with 18 °C by day, Ringkøbing the coolest with 16 °C. 4 of 19 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Odense | 74 | 18° | 16° | 6 h | 10 |
| Kolding | 16 | 18° | 16° | 5 h | 11 |
| Aabenraa | 16 | 18° | 16° | 5 h | 12 |
| Copenhagen | 71 | 17° | 16° | 5 h | 10 |
| Aarhus | 70 | 17° | 16° | 5 h | 10 |
| Tønder | 67 | 17° | – | 5 h | 13 |
| Roskilde | 21 | 17° | 16° | 6 h | 10 |
| Sønderborg | 19 | 17° | 16° | 5 h | 10 |
| Helsingør | 19 | 17° | 16° | 6 h | 10 |
| Aalborg | 18 | 17° | 16° | 5 h | 11 |
| Fredericia | 17 | 17° | 16° | 5 h | 11 |
| Vejle | 16 | 17° | 16° | 5 h | 12 |
| Ribe | 13 | 17° | 16° | 5 h | 13 |
| Esbjerg | 13 | 17° | 17° | 5 h | 13 |
| Skagen | 19 | 16° | 16° | 6 h | 11 |
| Frederikshavn | 19 | 16° | 16° | 6 h | 11 |
| Hirtshals | 19 | 16° | 16° | 6 h | 11 |
| Hvide Sande | 13 | 16° | 16° | 5 h | 14 |
| Ringkøbing | 13 | 16° | 16° | 5 h | 14 |
Denmark in September: quick answers
Denmark in September: where is it warmest?
The warmest places in September are Odense (18 °C), Kolding (18 °C) and Aabenraa (18 °C).
Denmark in September: where is the sea warmest?
The sea is warmest at Esbjerg (17 °C), Odense (16 °C) and Kolding (16 °C).
Denmark in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Odense, Copenhagen and Aarhus.
Denmark month by month
Denmark: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences