Denmark
Denmark in September
Where it is warm, dry and good for swimming in Denmark in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Denmark in September?
- Odense is the warmest of the 16 destinations compared, with highs of 17°C (63°F) in September; Elsinore is the coolest at 16°C (60°F).
- Can you swim in the sea in Denmark in September?
- Hardly: even the warmest water, at Esbjerg (16°C (61°F)), stays below 21 °C.
Warmest
17°
Odense
Coolest
16°
Elsinore
Driest
57 mm
Odense
Warmest sea
16°
Esbjerg
Odense is the warm end of Denmark in September (17°C (63°F)); Elsinore the cool end (16°C (60°F)). On average it is 4 °C (7 °F) cooler than August. Some destinations see regular rain. Best bets this month: Copenhagen, Aarhus, and Odense.
Best places in Denmark in September
51 
Copenhagen
Capital Region · Denmark
17° / 10° 67 mm Sep
48
Aarhus
Central Jutland · Denmark
16° / 10° 65 mm Sep
54
Odense
South Denmark · Denmark
17° / 10° 57 mm Sep
47
Aalborg
North Denmark · Denmark
16° / 9° 70 mm Sep
48
Roskilde
Zealand · Denmark
16° / 10° 57 mm Sep
49
Rønne
Capital Region · Denmark
16° / 11° 62 mm Sep
52
Kalundborg
Zealand · Denmark
17° / 11° 56 mm Sep
47
Esbjerg
South Denmark · Denmark
17° / 11° 93 mm Sep
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Odense | 17° | 10° | 57 mm | — | 54 |
| Copenhagen | 17° | 10° | 67 mm | 15° | 51 |
| Inner City of Copenhagen | 17° | 10° | 67 mm | 15° | 51 |
| Rønne | 16° | 11° | 62 mm | 16° | 49 |
| Aarhus | 16° | 10° | 65 mm | 15° | 48 |
| Roskilde | 16° | 10° | 57 mm | — | 48 |
| Sønderborg | 16° | 11° | 73 mm | — | 48 |
| Aalborg | 16° | 9° | 70 mm | — | 47 |
| Esbjerg | 17° | 11° | 93 mm | 16° | 47 |
| Elsinore | 16° | 10° | 65 mm | — | 47 |
| Frederikshavn | 16° | 10° | 70 mm | 15° | 47 |
| Horsens | 16° | 10° | 65 mm | — | 47 |
| Billund | 16° | 8° | 90 mm | — | 45 |
| Ribe | 17° | 10° | 86 mm | 16° | 45 |
| Thisted | 16° | 9° | 88 mm | — | 45 |
| Fjerritslev | 16° | 9° | 81 mm | 16° | 45 |
Frequently asked questions
What is the weather like in Denmark in September?
Average daytime highs range from 16° in Elsinore to 17° in Odense.
Can you swim in Denmark in September?
The sea is cool: the warmest water is around Esbjerg at about 16°.