Water temperature in La Plaine-sur-Mer
Sea surface temperature · updated today, Thursday, October 29, at 12:05 am (CET)- Today
- 57.6–57.7 °F
- Air today
- 47 / 61 °F
- Wed 4
- 56.1 °F
- Wetsuit
- 4/3 mm
Today the water in La Plaine-sur-Mer is 57.7 °F and ranges 57.6–57.7 °F through the day, with the air between 47 °F and 61 °F. It cools over the next few days: about 56.1 °F by Wednesday 4.
Measured by satellite
This is the temperature satellites measured 2 days ago in the water just below the surface, at the nearest point of sea to La Plaine-sur-Mer (1.2 mi away), from NASA's MUR analysis, which sees the water in 1 km detail. It isn't a forecast: the big figure above is what a model gives for right now. On sunny afternoons the top of the water can be a little warmer.
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
The water over the next few days
- Today
- Fri 30
- Sat 31
- Sun 1
- Mon 2
- Tue 3
- Wed 4
- Thu 5
- Fri 6
- Sat 7
Water over the last 60 days
Over these days it has dropped 12.6 °F (from August 30).
Over the next few weeks the water looks a bit below normal (−1.3 °F), according to ECMWF 46-day.
Daily average and its range (low and high). The dotted line is the forecast.
Water temperature by month vs. normal
The water off La Plaine-sur-Mer is colder than normal for late October today (−1.0 °F).
- 49.2° 49°JanJ
- 48.5° 48°FebF
- 49.9° 50°MarM
- 53.2° 53°AprA
- 57.5° 58°MayM
- 61.9° 62°JunJ
- 64.4° 64°JulJ
- 65.3° 65°AugA
- 63.2° 63°SepS
- 60.5° 60°OctO
- 56.4° 56°NovN
- 51.8° 52°DecD
- Monthly normal
- Today
- Best time
The best time to swim in La Plaine-sur-Mer is from July to August, when the water averages 64.4–65.3 °F.
The water is warmest in August (65.3 °F on average) and coldest in February (48.5 °F).
Monthly averages for 1991–2020 (NOAA OISST, from satellites and buoys; nearest data point 3.9 mi away). Right by the shore, the water can be a little colder or warmer. Sources and licenses
Water and air, day by day
| Day | Water | Air | Max wave |
|---|---|---|---|
| Today | 57.6–57.7 °F | 47 / 61 °F | 3.8 ft |
| Fri 30 | 57.2–57.6 °F | 43 / 60 °F | 2.4 ft |
| Sat 31 | 57.0–57.2 °F | 46 / 55 °F | 2.8 ft |
| Sun 1 | 56.7–57.2 °F | 46 / 55 °F | 2.4 ft |
| Mon 2 | 56.8–57.0 °F | 45 / 57 °F | 2.0 ft |
| Tue 3 | 56.3–56.8 °F | 44 / 55 °F | 2.0 ft |
| Wed 4 | 55.9–56.3 °F | 41 / 50 °F | 2.4 ft |
Which wetsuit to wear
| Water | Wetsuit | How it feels |
|---|---|---|
| < 52 °F | 6/5 mm with hood, booties and gloves | Very cold: full kit only |
| 52°–57 °F | 5/4 mm with booties | Cold: takes your breath away |
| 57°–63 °F | 4/3 mm | Cool |
| 63°–66 °F | 3/2 mm | Mild |
| 66°–72 °F | Shorty (springsuit) | Pleasant |
| 72°–75 °F | Rash guard or top | Very pleasant |
| > 75 °F | No wetsuit | Warm |
A rough guide: it depends on the wind, how long you stay in and each person.
Fish are cold-blooded: the water sets their activity. Sudden temperature changes usually put them off the bite; with steady water, activity is more regular.
Previous days
The water over the last 60 days.
| Day | Water | Low / high |
|---|---|---|
| Wed 28 | 58.1 °F | 57.7–58.5 °F |
| Tue 27 | 58.6 °F | 58.5–58.6 °F |
| Mon 26 | 58.5 °F | 58.3–58.6 °F |
| Sun 25 | 58.6 °F | 58.5–58.6 °F |
| Sat 24 | 58.5 °F | 58.5–58.8 °F |
| Fri 23 | 59.2 °F | 58.8–59.7 °F |
| Thu 22 | 60.1 °F | 59.7–60.4 °F |
Show all 60 days
| Day | Water | Low / high |
|---|---|---|
| Wed 21 | 60.8 °F | 60.4–61.3 °F |
| Tue 20 | 61.2 °F | 61.0–61.5 °F |
| Mon 19 | 61.9 °F | 61.7–62.2 °F |
| Sun 18 | 62.6 °F | 62.4–63.1 °F |
| Sat 17 | 63.5 °F | 63.1–64.2 °F |
| Fri 16 | 64.6 °F | 64.2–64.6 °F |
| Thu 15 | 64.4 °F | 64.0–64.8 °F |
| Wed 14 | 64.2 °F | 63.9–64.4 °F |
| Tue 13 | 64.0 °F | 63.9–64.4 °F |
| Mon 12 | 63.9 °F | 63.7–63.9 °F |
| Sun 11 | 64.0 °F | 63.9–64.2 °F |
| Sat 10 | 64.4 °F | 64.2–64.6 °F |
| Fri 9 | 64.8 °F | 64.6–65.1 °F |
| Thu 8 | 65.7 °F | 65.3–66.4 °F |
| Wed 7 | 66.9 °F | 66.6–67.5 °F |
| Tue 6 | 67.3 °F | 66.7–67.8 °F |
| Mon 5 | 66.9 °F | 66.6–67.3 °F |
| Sun 4 | 66.9 °F | 66.6–67.1 °F |
| Sat 3 | 67.3 °F | 67.1–67.5 °F |
| Fri 2 | 67.5 °F | 67.3–67.8 °F |
| Thu 1 | 67.8 °F | 67.6–68.2 °F |
| Wed 30 | 68.4 °F | 68.2–68.7 °F |
| Tue 29 | 68.2 °F | 67.8–68.7 °F |
| Mon 28 | 67.8 °F | 67.6–68.4 °F |
| Sun 27 | 67.6 °F | 67.3–67.8 °F |
| Sat 26 | 67.6 °F | 67.5–67.8 °F |
| Fri 25 | 67.6 °F | 66.9–68.0 °F |
| Thu 24 | 67.6 °F | 67.1–68.4 °F |
| Wed 23 | 67.5 °F | 66.9–68.4 °F |
| Tue 22 | 67.3 °F | 66.9–67.8 °F |
| Mon 21 | 67.5 °F | 66.9–68.4 °F |
| Sun 20 | 67.1 °F | 66.6–67.5 °F |
| Sat 19 | 66.9 °F | 66.7–67.1 °F |
| Fri 18 | 67.1 °F | 66.9–67.3 °F |
| Thu 17 | 67.6 °F | 67.3–68.0 °F |
| Wed 16 | 68.4 °F | 68.2–69.4 °F |
| Tue 15 | 69.4 °F | 69.1–69.8 °F |
| Mon 14 | 69.4 °F | 68.9–70.0 °F |
| Sun 13 | 69.3 °F | 68.9–69.8 °F |
| Sat 12 | 69.1 °F | 68.7–69.4 °F |
| Fri 11 | 68.9 °F | 68.5–69.1 °F |
| Thu 10 | 68.9 °F | 68.5–69.1 °F |
| Wed 9 | 69.3 °F | 68.7–70.3 °F |
| Tue 8 | 70.7 °F | 70.5–71.1 °F |
| Mon 7 | 70.9 °F | 70.7–71.1 °F |
| Sun 6 | 70.7 °F | 70.2–71.2 °F |
| Sat 5 | 70.5 °F | 70.0–71.4 °F |
| Fri 4 | 70.2 °F | 70.0–70.5 °F |
| Thu 3 | 70.0 °F | 69.6–70.3 °F |
| Wed 2 | 69.8 °F | 69.4–70.5 °F |
| Tue 1 | 70.3 °F | 70.0–70.7 °F |
| Mon 31 | 70.2 °F | 70.0–70.5 °F |
| Sun 30 | 70.7 °F | 70.5–71.1 °F |
It's the daily analysis from Météo-France / Copernicus Marine (satellites, buoys and model), not a buoy reading at this spot.
Questions about the water in La Plaine-sur-MerQuestions
What's the water temperature today in La Plaine-sur-Mer?
57.7 °F; through the day it ranges 57.6–57.7 °F.
Will the water get warmer or colder?
It cools over the next few days: about 56.1 °F by Wednesday 4.
Which wetsuit do I need today?
With the water as it is today, 4/3 mm (cool). It's a rough guide: it depends on the wind and each person.
How warm is the water in La Plaine-sur-Mer in October?
In October, the water in La Plaine-sur-Mer averages 60.5 °F (1991–2020). For a long swim: 4/3 mm (cool).
How warm is the water in La Plaine-sur-Mer in August?
In August, the water in La Plaine-sur-Mer averages 65.3 °F (1991–2020), the warmest of the year. For a long swim: 3/2 mm (mild).
When is the best time to swim in La Plaine-sur-Mer?
The best time to swim in La Plaine-sur-Mer is from July to August, when the water averages 64.4–65.3 °F. The water is warmest in August (65.3 °F on average) and coldest in February (48.5 °F).
Is the water warmer or colder than normal?
The water off La Plaine-sur-Mer is colder than normal for late October today (−1.0 °F).
More about La Plaine-sur-Mer today
Water temperature near La Plaine-sur-Mer
- Pornic 57.6 °F · 4.4 mi
- Noirmoutier-en-l'Île 58.3 °F · 9.5 mi
- Corsept 57.4 °F · 11 mi
- Le Pouliguen 57.7 °F · 15 mi
- Saint-Molf 57.0 °F · 21 mi
- Notre-Dame-de-Monts 58.1 °F · 21 mi
Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.
Learn more
Sea surface temperature: Open-Meteo with Météo-France / Copernicus Marine, CC BY 4.0; grid point 1.1 mi away. Near the shore, in coves and estuaries, the water can be a little colder or warmer.
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 12:05 am (local time).
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