Fontenelle Bay Sea Water Temperature
A temperate beach on the Celtic Sea, warmest around September at about 16.8°C. Today's reading, 7-day forecast, and monthly averages below.
Fontenelle Bay water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Fontenelle Bay Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Fontenelle Bay occurs inJuly, August, September, October — peaking at16.8°C (62.2°F) in September.
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 | 9.5°C | 10.8°C | 12.4°C | Very Cold (< 16°C) |
| February | 8.4°C | 10°C | 11.3°C | Very Cold (< 16°C) |
| March | 8.4°C | 9.6°C | 10.7°C | Very Cold (< 16°C) |
| April | 9.1°C | 10.1°C | 11.4°C | Very Cold (< 16°C) |
| May | 10°C | 11.5°C | 13.5°C | Very Cold (< 16°C) |
| June | 11.9°C | 13.5°C | 15°C | Very Cold (< 16°C) |
| July | 13.7°C | 15.3°C | 17.8°C | Very Cold (< 16°C) |
| August | 15.7°C | 16.6°C | 18.4°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 16.1°C | 16.8°C | 17.7°C | Cool / Refreshing (16°C – 20°C) |
| October | 14.6°C | 16.1°C | 17.3°C | Cool / Refreshing (16°C – 20°C) |
| November | 11.7°C | 14.2°C | 16.1°C | Very Cold (< 16°C) |
| December | 11°C | 12.3°C | 13.9°C | Very Cold (< 16°C) |
Swimming FAQs for Fontenelle Bay
Is the sea warm enough to swim in Fontenelle Bay today?
Typical sea surface temperature in Fontenelle Bay this time of year is 16.8°C (62.2°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.
What are the warmest months for swimming in Fontenelle Bay?
The highest water temperatures in Fontenelle Bay typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Fontenelle Bay in September?
Historically in September, water temperatures in Fontenelle Bay average around16.8°C (62.2°F), fluctuating between a recorded minimum of 16.1°C and a maximum of 17.7°C.