Plage de Port-Vieux Water Temperature & Swim Forecast
Sheltered old-Biarritz swim cove.
Pleasant water with a light chop and a light breeze — good swimming conditions.
Model estimate · modelled, not a buoy measurement. How accurate is this?
Location
Plage de Port-Vieux on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Shorty 2mm
At 21.8°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Recommendation tuned for Plage de Port-Vieux's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Plage de Port-Vieux swimming conditions summary
- Water temperature
- 21.8°C
- Water feels
- Pleasant
- Swimmable today
- Yes — comfortable for most swimmers
- Swim conditions score
- 84/100 · Excellent
- Wetsuit needed
- Shorty 2mm
- Air temperature
- —
- Waves
- —
- Wind
- —
- UV index
- —
- Average sea temperature (September)
- 22.0 °C
- Warmest months to swim
- July, August, September
At 21.8°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene. Model estimate. Water, wave, wind and UV values are Open-Meteo marine/weather model estimates, refreshed hourly — not buoy measurements.
Frequently asked questions
Can I swim at Plage de Port-Vieux right now?
The sea at Plage de Port-Vieux is currently 21.8°C — good swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.
What will the sea temperature be at Plage de Port-Vieux next week?
Based on long-term September averages and the latest marine model, expect the sea around Plage de Port-Vieux to sit close to 19.9°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.
When is the best month to swim at Plage de Port-Vieux?
July – August – September are typically the warmest months to swim at Plage de Port-Vieux, with sea temperatures at their seasonal peak.
Do I need a wetsuit at Plage de Port-Vieux?
With water currently at 21.8°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.
Can I swim at Plage de Port-Vieux today?
The sea is currently 21.8°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in Aquitaine, France (Bay of Biscay).
- • Family friendly with calm, accessible water.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Plage de Port-Vieux
The sea in Plage de Port-Vieux peaks in August, when the water averages around 24°C.
The main swimming season runs from June – September, when surface temperatures stay comfortable for extended sessions.
On average, 4 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like May and October are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 13°C, when cold-water swimmers dominate the coast.
Plage de Port-Vieux sea temperature history
Long-term climatology for Plage de Port-Vieux shows an annual mean sea temperature of 17°C, ranging from 13°C in winter to 24°C at the summer peak.
The seasonal swing is roughly 11°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Plage de Port-Vieux, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Plage de Port-Vieux sea temperature: frequently asked questions
What is the warmest month to swim in Plage de Port-Vieux?
August is the warmest month in Plage de Port-Vieux, when the sea averages about 24°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Plage de Port-Vieux?
The coldest month in Plage de Port-Vieux is typically January, when the water averages around 13°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Plage de Port-Vieux without a wetsuit?
The main swimming season in Plage de Port-Vieux runs from June – September — about 4 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Plage de Port-Vieux?
Outside peak summer the water in Plage de Port-Vieux drops toward 15°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Plage de Port-Vieux?
The long-term annual mean sea temperature in Plage de Port-Vieux is about 17°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Plage de Port-Vieux?
The live reading at the top of this page shows the current sea temperature in Plage de Port-Vieux, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jun – Jul – Aug – Sep
| Month | Sea | Comfort |
|---|---|---|
| Jan | 13°C | Cold |
| Feb | 13°C | Cold |
| Mar | 13°C | Cold |
| Apr | 14°C | Bracing |
| May | 17°C | Bracing |
| Jun | 20°C | Pleasant |
| Jul | 23°C | Warm |
| Aug ⭐ | 24°C | Warm |
| Sep | 22°C | Warm |
| Oct | 19°C | Pleasant |
| Nov | 16°C | Bracing |
| Dec | 14°C | Bracing |
Nearby beaches
The closest coastline, with live water temperatures.