Lake Ossiach vs Wörthersee

Wörthersee is the warmer swim right now at about 20.5°C. They are roughly 14 km apart in Austria.

Lake Ossiach

Carinthia

20.0°C

warm · modelled estimate

October average
20.0°C
Warmest month
August · 25.0°C
Coldest month
5.0°C
Swim season
June–October

Lake Ossiach in Carinthia, Austria warms into the mid-20s °C for reliable summer swimming, and drops close to single digits in winter.

Wörthersee

Carinthia

20.5°C

warm · modelled estimate

October average
20.5°C
Warmest month
August · 26.0°C
Coldest month
4.0°C
Swim season
June–October

Austria's warmest large lake — Carinthian water regularly tops 25°C.

Month by month

LakeJanFebMarAprMayJunJulAugSepOctNovDec
Lake Ossiach6.3°C5.0°C6.3°C10.0°C15.0°C20.0°C23.7°C25.0°C23.7°C20.0°C15.0°C10.0°C
Wörthersee5.5°C4.0°C5.5°C9.5°C15.0°C20.5°C24.5°C26.0°C24.5°C20.5°C15.0°C9.5°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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