Grève de Penn al Lann Sea Water Temperature
A temperate beach on the Celtic Sea, warmest around August at about 15.6°C. Today's reading, 7-day forecast, and monthly averages below.
Grève de Penn al Lann water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Grève de Penn al Lann Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Grève de Penn al Lann occurs inJuly, August, September, October — peaking at15.6°C (60.1°F) in August.
Year-Round Water Temperature Curve (°C / °F)
Hover a bar for detailsFull 12-month data table — min / avg / max & swimming comfort
| Month | Min Water Temp | Average Water Temp | Max Water Temp | Swimming Comfort |
|---|---|---|---|---|
| January | 9.6°C | 11°C | 12.9°C | Very Cold (< 16°C) |
| February | 8.4°C | 10.4°C | 11.2°C | Very Cold (< 16°C) |
| March | 8.9°C | 10.3°C | 11.4°C | Very Cold (< 16°C) |
| April | 10.1°C | 11.1°C | 12.7°C | Very Cold (< 16°C) |
| May | 10.9°C | 12.7°C | 14.7°C | Very Cold (< 16°C) |
| June | 13°C | 14.1°C | 15.6°C | Very Cold (< 16°C) |
| July | 13.6°C | 15.3°C | 17.5°C | Very Cold (< 16°C) |
| August | 13.8°C | 15.6°C | 17.8°C | Very Cold (< 16°C) |
| SeptemberCurrent | 13.4°C | 15.3°C | 16.7°C | Very Cold (< 16°C) |
| October | 13.5°C | 14.6°C | 16.8°C | Very Cold (< 16°C) |
| November | 12.3°C | 13.7°C | 15.3°C | Very Cold (< 16°C) |
| December | 11°C | 12.3°C | 13.5°C | Very Cold (< 16°C) |
Swimming FAQs for Grève de Penn al Lann
Is the sea warm enough to swim in Grève de Penn al Lann today?
Typical sea surface temperature in Grève de Penn al Lann this time of year is 15.3°C (59.5°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.
What are the warmest months for swimming in Grève de Penn al Lann?
The highest water temperatures in Grève de Penn al Lann typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Grève de Penn al Lann in September?
Historically in September, water temperatures in Grève de Penn al Lann average around15.3°C (59.5°F), fluctuating between a recorded minimum of 13.4°C and a maximum of 16.7°C.