Water temperature in Château-d'Olonne
Sea surface temperature · updated today, Thursday, October 29, at 8:32 am (CET)- Today
- 58.5–58.6 °F
- Air today
- 46 / 62 °F
- Wed 4
- 57.2 °F
- Wetsuit
- 4/3 mm
Today the water in Château-d'Olonne is 58.5 °F and ranges 58.5–58.6 °F through the day, with the air between 46 °F and 62 °F. It cools over the next few days: about 57.2 °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 Château-d'Olonne (2.1 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 11.9 °F (from August 30).
Daily average and its range (low and high). The dotted line is the forecast.
Water temperature by month vs. normal
The water off Château-d'Olonne is colder than normal for late October today (−1.5 °F).
- 50.7° 51°JanJ
- 49.4° 49°FebF
- 50.3° 50°MarM
- 53.5° 54°AprA
- 58.0° 58°MayM
- 62.7° 63°JunJ
- 65.7° 66°JulJ
- 66.9° 67°AugA
- 64.8° 65°SepS
- 61.8° 62°OctO
- 57.7° 58°NovN
- 53.3° 53°DecD
- Monthly normal
- Today
- Best time
The best time to swim in Château-d'Olonne is from July to August, when the water averages 65.7–66.9 °F.
The water is warmest in August (66.9 °F on average) and coldest in February (49.4 °F).
Monthly averages for 1991–2020 (NOAA OISST, from satellites and buoys; nearest data point 11 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 | 58.5–58.6 °F | 46 / 62 °F | 7.2 ft |
| Fri 30 | 58.5–58.5 °F | 42 / 64 °F | 3.9 ft |
| Sat 31 | 58.3–58.3 °F | 40 / 58 °F | 4.4 ft |
| Sun 1 | 58.1–58.3 °F | 43 / 56 °F | 4.2 ft |
| Mon 2 | 57.7–58.1 °F | 44 / 56 °F | 3.3 ft |
| Tue 3 | 57.4–57.7 °F | 45 / 54 °F | 2.2 ft |
| Wed 4 | 57.0–57.4 °F | 43 / 50 °F | 3.0 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 | 58.8 °F | 58.6–58.8 °F |
| Tue 27 | 59.0 °F | 58.8–59.0 °F |
| Mon 26 | 58.8 °F | 58.8–59.0 °F |
| Sun 25 | 59.0 °F | 58.8–59.0 °F |
| Sat 24 | 59.0 °F | 59.0–59.2 °F |
| Fri 23 | 59.5 °F | 59.2–59.9 °F |
| Thu 22 | 60.1 °F | 60.1–60.3 °F |
Show all 60 days
| Day | Water | Low / high |
|---|---|---|
| Wed 21 | 60.6 °F | 60.3–61.3 °F |
| Tue 20 | 61.3 °F | 61.3–61.5 °F |
| Mon 19 | 61.7 °F | 61.5–62.2 °F |
| Sun 18 | 62.6 °F | 62.2–63.3 °F |
| Sat 17 | 63.9 °F | 63.3–64.6 °F |
| Fri 16 | 64.9 °F | 64.8–65.1 °F |
| Thu 15 | 64.8 °F | 64.4–65.3 °F |
| Wed 14 | 64.6 °F | 64.2–64.9 °F |
| Tue 13 | 64.2 °F | 64.0–64.4 °F |
| Mon 12 | 63.7 °F | 63.5–64.0 °F |
| Sun 11 | 63.7 °F | 63.5–63.9 °F |
| Sat 10 | 64.2 °F | 63.9–64.6 °F |
| Fri 9 | 65.1 °F | 64.6–65.5 °F |
| Thu 8 | 66.0 °F | 65.5–66.7 °F |
| Wed 7 | 67.3 °F | 66.9–67.5 °F |
| Tue 6 | 67.5 °F | 67.1–67.6 °F |
| Mon 5 | 67.5 °F | 66.7–68.2 °F |
| Sun 4 | 66.9 °F | 66.7–67.3 °F |
| Sat 3 | 66.9 °F | 66.7–67.1 °F |
| Fri 2 | 67.3 °F | 66.9–67.5 °F |
| Thu 1 | 67.5 °F | 67.3–67.5 °F |
| Wed 30 | 67.5 °F | 67.5–67.6 °F |
| Tue 29 | 67.3 °F | 67.1–67.6 °F |
| Mon 28 | 67.5 °F | 66.9–68.4 °F |
| Sun 27 | 67.1 °F | 66.6–67.6 °F |
| Sat 26 | 66.9 °F | 66.6–67.3 °F |
| Fri 25 | 67.1 °F | 66.6–67.6 °F |
| Thu 24 | 66.9 °F | 66.2–67.8 °F |
| Wed 23 | 66.7 °F | 66.0–67.6 °F |
| Tue 22 | 66.4 °F | 66.0–66.9 °F |
| Mon 21 | 66.7 °F | 66.0–67.6 °F |
| Sun 20 | 66.6 °F | 66.0–66.9 °F |
| Sat 19 | 66.4 °F | 66.0–66.9 °F |
| Fri 18 | 66.4 °F | 65.8–66.6 °F |
| Thu 17 | 66.7 °F | 66.6–67.3 °F |
| Wed 16 | 67.6 °F | 67.3–68.7 °F |
| Tue 15 | 69.3 °F | 68.9–69.8 °F |
| Mon 14 | 69.6 °F | 68.9–70.5 °F |
| Sun 13 | 69.4 °F | 68.7–70.2 °F |
| Sat 12 | 69.3 °F | 68.7–69.8 °F |
| Fri 11 | 69.1 °F | 68.7–69.3 °F |
| Thu 10 | 69.1 °F | 68.7–69.3 °F |
| Wed 9 | 69.3 °F | 69.1–70.0 °F |
| Tue 8 | 70.7 °F | 70.2–71.2 °F |
| Mon 7 | 71.1 °F | 70.7–71.4 °F |
| Sun 6 | 71.1 °F | 70.3–72.0 °F |
| Sat 5 | 70.9 °F | 70.2–71.8 °F |
| Fri 4 | 70.5 °F | 70.0–70.9 °F |
| Thu 3 | 70.3 °F | 69.6–71.1 °F |
| Wed 2 | 70.0 °F | 69.6–70.7 °F |
| Tue 1 | 70.7 °F | 70.3–71.1 °F |
| Mon 31 | 70.7 °F | 70.5–70.9 °F |
| Sun 30 | 70.7 °F | 70.5–70.9 °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 Château-d'OlonneQuestions
What's the water temperature today in Château-d'Olonne?
58.5 °F; through the day it ranges 58.5–58.6 °F.
Will the water get warmer or colder?
It cools over the next few days: about 57.2 °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 Château-d'Olonne in October?
In October, the water in Château-d'Olonne averages 61.8 °F (1991–2020). For a long swim: 4/3 mm (cool).
How warm is the water in Château-d'Olonne in August?
In August, the water in Château-d'Olonne averages 66.9 °F (1991–2020), the warmest of the year. For a long swim: shorty (springsuit) (pleasant).
When is the best time to swim in Château-d'Olonne?
The best time to swim in Château-d'Olonne is from July to August, when the water averages 65.7–66.9 °F. The water is warmest in August (66.9 °F on average) and coldest in February (49.4 °F).
Is the water warmer or colder than normal?
The water off Château-d'Olonne is colder than normal for late October today (−1.5 °F).
More about Château-d'Olonne today
Water temperature near Château-d'Olonne
- Jard-sur-Mer 59.0 °F · 9.9 mi
- Bretignolles-sur-Mer 58.5 °F · 10 mi
- Givrand 58.5 °F · 13 mi
- La Tranche-sur-Mer 59.2 °F · 18 mi
- Saint-Martin-de-Ré 59.5 °F · 27 mi
- Notre-Dame-de-Monts 57.9 °F · 29 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 4.0 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 8:32 am (local time).
Spotted a mistake? Tell us · Where the weather and sea data come from