Lake Biwa vs Lake Inari

Lake Biwa is the warmer swim right now at about 23°C. They are roughly 7055 km apart in Japan and Finland.

Lake Biwa

Shiga

23.0°C

warm · modelled estimate

October average
23.0°C
Warmest month
August · 28.0°C
Coldest month
8.0°C
Swim season
May–November

Japan's largest lake, with white-sand swim beaches on the west shore.

Lake Inari

Lapland

10.8°C

cool · modelled estimate

October average
10.8°C
Warmest month
August · 14.0°C
Coldest month
1.0°C
Swim season
no month averages above 18°C — a wetsuit lake year-round

Lake Inari in Lapland, Finland stays cold all year; expect a wetsuit or a very quick dip, and freezes or near-freezes in winter.

Month by month

LakeJanFebMarAprMayJunJulAugSepOctNovDec
Lake Biwa9.3°C8.0°C9.3°C13.0°C18.0°C23.0°C26.7°C28.0°C26.7°C23.0°C18.0°C13.0°C
Lake Inari1.9°C1.0°C1.9°C4.3°C7.5°C10.8°C13.1°C14.0°C13.1°C10.8°C7.5°C4.3°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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