Port Saint-Julien Sea Water Temperature
A temperate beach on the Cantabrian Sea, warmest around August at about 18.5°C. Today's reading, 7-day forecast, and monthly averages below.
Port Saint-Julien water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Port Saint-Julien Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Port Saint-Julien occurs inJune, July, August, September — peaking at18.5°C (65.3°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 | 7.7°C | 10.4°C | 12.3°C | Very Cold (< 16°C) |
| February | 8.2°C | 9.7°C | 11.6°C | Very Cold (< 16°C) |
| March | 7.9°C | 10°C | 11.6°C | Very Cold (< 16°C) |
| April | 10.4°C | 11.8°C | 15°C | Very Cold (< 16°C) |
| May | 11.5°C | 14.2°C | 17.5°C | Very Cold (< 16°C) |
| June | 14.2°C | 16.5°C | 18.2°C | Cool / Refreshing (16°C – 20°C) |
| July | 14.5°C | 18°C | 20.5°C | Cool / Refreshing (16°C – 20°C) |
| August | 16.8°C | 18.5°C | 21.4°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 15.2°C | 17.7°C | 19.1°C | Cool / Refreshing (16°C – 20°C) |
| October | 14.6°C | 16.3°C | 19°C | Cool / Refreshing (16°C – 20°C) |
| November | 11.9°C | 14.1°C | 16.3°C | Very Cold (< 16°C) |
| December | 11°C | 12.1°C | 13.7°C | Very Cold (< 16°C) |
Swimming FAQs for Port Saint-Julien
Is the sea warm enough to swim in Port Saint-Julien today?
Typical sea surface temperature in Port Saint-Julien this time of year is 17.7°C (63.9°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 Port Saint-Julien?
The highest water temperatures in Port Saint-Julien typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Port Saint-Julien in September?
Historically in September, water temperatures in Port Saint-Julien average around17.7°C (63.9°F), fluctuating between a recorded minimum of 15.2°C and a maximum of 19.1°C.