Grasmere vs Ullswater
Grasmere is the warmer swim right now at about 18.1°C. They are roughly 17 km apart in United Kingdom.
Grasmere
Cumbria
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
Grasmere in Cumbria, United Kingdom is swimmable in high summer, brisk either side of it, and drops close to single digits in winter.
Ullswater
Lake District
16.2°C
mild · modelled estimate
- September average
- 16.2°C
- Warmest month
- August · 17.0°C
- Coldest month
- 5.0°C
- Swim season
- no month averages above 18°C — a wetsuit lake year-round
Fell-ringed lake with easy shore access at Glenridding and Pooley Bridge.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grasmere | 5.9°C | 5.0°C | 5.9°C | 8.5°C | 12.0°C | 15.5°C | 18.1°C | 19.0°C | 18.1°C | 15.5°C | 12.0°C | 8.5°C |
| Ullswater | 5.8°C | 5.0°C | 5.8°C | 8.0°C | 11.0°C | 14.0°C | 16.2°C | 17.0°C | 16.2°C | 14.0°C | 11.0°C | 8.0°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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