Lake Esrum vs Lake Vättern

Lake Esrum is the warmer swim right now at about 19.7°C. They are roughly 298 km apart in Denmark and Sweden.

Lake Esrum

North Zealand

19.7°C

mild · modelled estimate

September average
19.7°C
Warmest month
August · 21.0°C
Coldest month
2.0°C
Swim season
July–September

Lake Esrum in North Zealand, Denmark is swimmable in high summer, brisk either side of it, and freezes or near-freezes in winter.

Lake Vättern

Jönköping

16.9°C

mild · modelled estimate

September average
16.9°C
Warmest month
August · 18.0°C
Coldest month
2.0°C
Swim season
August–August

Deep, exceptionally clear Swedish lake — cold, but a bucket-list swim.

Month by month

LakeJanFebMarAprMayJunJulAugSepOctNovDec
Lake Esrum3.3°C2.0°C3.3°C6.8°C11.5°C16.3°C19.7°C21.0°C19.7°C16.3°C11.5°C6.8°C
Lake Vättern3.1°C2.0°C3.1°C6.0°C10.0°C14.0°C16.9°C18.0°C16.9°C14.0°C10.0°C6.0°C

Monthly values are modelled from each lake's long-term winter and summer envelope, then refined with today's forecast air temperature for the headline reading.

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