Windermere vs Llyn Brenig

Windermere is the warmer swim right now at about 18.1°C. They are roughly 149 km apart in United Kingdom.

Windermere

Lake District

18.1°C

mild · modelled estimate

September average
18.1°C
Warmest month
August · 19.0°C
Coldest month
5.0°C
Swim season
July–September

England's largest lake and the heart of UK open-water swimming.

Llyn Brenig

Wales

16.1°C

mild · modelled estimate

September average
16.1°C
Warmest month
August · 17.0°C
Coldest month
4.0°C
Swim season
no month averages above 18°C — a wetsuit lake year-round

Llyn Brenig in Wales, United Kingdom stays cool even at its August peak — a short-swim lake, and drops close to single digits in winter.

Month by month

LakeJanFebMarAprMayJunJulAugSepOctNovDec
Windermere5.9°C5.0°C5.9°C8.5°C12.0°C15.5°C18.1°C19.0°C18.1°C15.5°C12.0°C8.5°C
Llyn Brenig4.9°C4.0°C4.9°C7.3°C10.5°C13.8°C16.1°C17.0°C16.1°C13.8°C10.5°C7.3°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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