Water temperature in Locoal-Mendon
Sea surface temperature · updated today, Thursday, October 29, at 3:57 am (CET)- Today
- 56.5–56.8 °F
- Air today
- 42 / 60 °F
- Wed 4
- 54.7 °F
- Wetsuit
- 5/4 mm with booties
Today the water in Locoal-Mendon is 56.7 °F and ranges 56.5–56.8 °F through the day, with the air between 42 °F and 60 °F. It cools over the next few days: about 54.7 °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 Locoal-Mendon (1.1 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 12.2 °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 Locoal-Mendon is colder than normal for late October today (−2.7 °F).
- 50.4° 50°JanJ
- 49.3° 49°FebF
- 49.9° 50°MarM
- 52.9° 53°AprA
- 56.9° 57°MayM
- 61.1° 61°JunJ
- 63.7° 64°JulJ
- 64.9° 65°AugA
- 63.0° 63°SepS
- 60.4° 60°OctO
- 56.9° 57°NovN
- 53.2° 53°DecD
- Monthly normal
- Today
- Best time
The best time to swim in Locoal-Mendon is from July to August, when the water averages 63.7–64.9 °F.
The water is warmest in August (64.9 °F on average) and coldest in February (49.3 °F).
Monthly averages for 1991–2020 (NOAA OISST, from satellites and buoys; nearest data point 5.3 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 | 56.5–56.8 °F | 42 / 60 °F | 2.9 ft |
| Fri 30 | 56.1–56.5 °F | 42 / 60 °F | 1.8 ft |
| Sat 31 | 55.8–56.1 °F | 42 / 57 °F | 1.9 ft |
| Sun 1 | 55.6–55.8 °F | 41 / 59 °F | 1.6 ft |
| Mon 2 | 55.2–55.6 °F | 42 / 60 °F | 1.2 ft |
| Tue 3 | 54.9–55.2 °F | 48 / 57 °F | 1.2 ft |
| Wed 4 | 54.5–54.9 °F | 41 / 52 °F | 1.3 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 | 57.0 °F | 56.8–57.0 °F |
| Tue 27 | 57.2 °F | 57.0–57.2 °F |
| Mon 26 | 57.0 °F | 56.8–57.2 °F |
| Sun 25 | 57.2 °F | 56.8–57.2 °F |
| Sat 24 | 57.4 °F | 57.2–57.7 °F |
| Fri 23 | 58.3 °F | 57.9–58.6 °F |
| Thu 22 | 58.8 °F | 58.6–59.0 °F |
Show all 60 days
| Day | Water | Low / high |
|---|---|---|
| Wed 21 | 59.4 °F | 59.0–60.3 °F |
| Tue 20 | 60.3 °F | 60.1–60.4 °F |
| Mon 19 | 60.6 °F | 60.4–60.8 °F |
| Sun 18 | 61.2 °F | 61.0–61.3 °F |
| Sat 17 | 61.7 °F | 61.5–61.9 °F |
| Fri 16 | 62.2 °F | 62.1–62.4 °F |
| Thu 15 | 62.4 °F | 61.9–62.8 °F |
| Wed 14 | 62.2 °F | 61.9–63.0 °F |
| Tue 13 | 63.0 °F | 62.8–63.1 °F |
| Mon 12 | 63.0 °F | 62.8–63.0 °F |
| Sun 11 | 63.1 °F | 63.1–63.5 °F |
| Sat 10 | 63.5 °F | 63.5–63.9 °F |
| Fri 9 | 63.9 °F | 63.9–64.2 °F |
| Thu 8 | 64.4 °F | 64.2–64.9 °F |
| Wed 7 | 65.3 °F | 64.9–65.8 °F |
| Tue 6 | 65.8 °F | 65.5–66.0 °F |
| Mon 5 | 65.7 °F | 65.1–66.2 °F |
| Sun 4 | 65.5 °F | 65.3–65.7 °F |
| Sat 3 | 65.7 °F | 65.7–66.0 °F |
| Fri 2 | 66.0 °F | 65.7–66.2 °F |
| Thu 1 | 66.0 °F | 65.8–66.2 °F |
| Wed 30 | 66.2 °F | 66.0–66.4 °F |
| Tue 29 | 66.0 °F | 65.7–66.4 °F |
| Mon 28 | 65.8 °F | 65.5–66.0 °F |
| Sun 27 | 65.8 °F | 65.7–66.0 °F |
| Sat 26 | 66.0 °F | 65.7–66.2 °F |
| Fri 25 | 65.8 °F | 65.5–66.2 °F |
| Thu 24 | 65.7 °F | 65.1–66.2 °F |
| Wed 23 | 65.3 °F | 64.8–66.2 °F |
| Tue 22 | 64.9 °F | 64.2–65.5 °F |
| Mon 21 | 64.9 °F | 64.4–65.7 °F |
| Sun 20 | 64.8 °F | 64.4–65.1 °F |
| Sat 19 | 64.8 °F | 64.6–64.9 °F |
| Fri 18 | 65.1 °F | 64.9–65.5 °F |
| Thu 17 | 66.0 °F | 65.7–66.6 °F |
| Wed 16 | 66.9 °F | 66.6–67.6 °F |
| Tue 15 | 67.8 °F | 67.6–68.2 °F |
| Mon 14 | 68.0 °F | 67.3–68.7 °F |
| Sun 13 | 67.6 °F | 67.3–68.0 °F |
| Sat 12 | 67.5 °F | 67.1–67.8 °F |
| Fri 11 | 67.5 °F | 67.1–67.8 °F |
| Thu 10 | 67.5 °F | 67.3–67.6 °F |
| Wed 9 | 68.0 °F | 67.5–68.9 °F |
| Tue 8 | 69.3 °F | 69.1–69.4 °F |
| Mon 7 | 69.3 °F | 69.1–69.6 °F |
| Sun 6 | 69.1 °F | 68.7–69.8 °F |
| Sat 5 | 68.9 °F | 68.5–69.4 °F |
| Fri 4 | 68.7 °F | 68.5–69.1 °F |
| Thu 3 | 68.5 °F | 68.4–68.9 °F |
| Wed 2 | 68.5 °F | 68.0–69.1 °F |
| Tue 1 | 68.9 °F | 68.5–69.3 °F |
| Mon 31 | 68.9 °F | 68.7–69.3 °F |
| Sun 30 | 69.3 °F | 69.1–69.4 °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 Locoal-MendonQuestions
What's the water temperature today in Locoal-Mendon?
56.7 °F; through the day it ranges 56.5–56.8 °F.
Will the water get warmer or colder?
It cools over the next few days: about 54.7 °F by Wednesday 4.
Which wetsuit do I need today?
With the water as it is today, 5/4 mm with booties (cold: takes your breath away). It's a rough guide: it depends on the wind and each person.
How warm is the water in Locoal-Mendon in October?
In October, the water in Locoal-Mendon averages 60.4 °F (1991–2020). For a long swim: 4/3 mm (cool).
How warm is the water in Locoal-Mendon in August?
In August, the water in Locoal-Mendon averages 64.9 °F (1991–2020), the warmest of the year. For a long swim: 3/2 mm (mild).
When is the best time to swim in Locoal-Mendon?
The best time to swim in Locoal-Mendon is from July to August, when the water averages 63.7–64.9 °F. The water is warmest in August (64.9 °F on average) and coldest in February (49.3 °F).
Is the water warmer or colder than normal?
The water off Locoal-Mendon is colder than normal for late October today (−2.7 °F).
More about Locoal-Mendon today
Water temperature near Locoal-Mendon
- Belz 56.7 °F · 3.5 mi
- Plouharnel 56.1 °F · 7.4 mi
- Saint-Pierre-Quiberon 55.4 °F · 13 mi
- Larmor-Plage 55.8 °F · 13 mi
- Arradon 56.5 °F · 14 mi
- Séné 56.5 °F · 18 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 0.8 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 3:57 am (local time).
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