TidePlanet

Water temperature in Loon Bay

Sea surface temperature · updated today, Wednesday, October 28, at 9:53 pm (GMT-2:30)
Water now 44.2 °F
Today
44.2–45.3 °F
Air today
33 / 38 °F
Tue 3
42.4 °F
Wetsuit
6/5 mm with hood, booties and gloves

Today the water in Loon Bay is 44.2 °F and ranges 44.2–45.3 °F through the day, with the air between 33 °F and 38 °F. It cools over the next few days: about 42.4 °F by Tuesday 3.

Measured by satellite

Yesterday, 1.0 mi from Loon Bay 45.1 °F

This is the temperature satellites measured yesterday in the water just below the surface, at the nearest point of sea to Loon Bay (1.0 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

Water over the last 60 days

Over these days it has dropped 22.7 °F (from August 29).

Over the next few weeks the water looks a bit below normal (−0.9 °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 Loon Bay is about normal for late October today.

In Loon Bay the water is cold all year: it is warmest in August (56.0 °F on average). For a long swim, wear a wetsuit.

The water is warmest in August (56.0 °F on average) and coldest in March (30.9 °F).

Monthly averages for 1991–2020 (NOAA OISST, from satellites and buoys; nearest data point 26 mi away). Right by the shore, the water can be a little colder or warmer. Sources and licenses

Water and air, day by day

DayWaterAirMax wave
Today 44.2–45.3 °F 33 / 38 °F 3.7 ft
Thu 29 43.7–44.1 °F 36 / 45 °F 2.4 ft
Fri 30 43.5–43.9 °F 41 / 57 °F 2.2 ft
Sat 31 43.7–43.9 °F 35 / 40 °F 3.0 ft
Sun 1 43.2–43.7 °F 33 / 37 °F 3.1 ft
Mon 2 42.8–43.2 °F 33 / 43 °F 2.2 ft
Tue 3 41.9–42.8 °F 28 / 37 °F 2.4 ft

Which wetsuit to wear

WaterWetsuitHow it feels
< 52 °F6/5 mm with hood, booties and glovesVery cold: full kit only
52°–57 °F5/4 mm with bootiesCold: takes your breath away
57°–63 °F4/3 mmCool
63°–66 °F3/2 mmMild
66°–72 °FShorty (springsuit)Pleasant
72°–75 °FRash guard or topVery pleasant
> 75 °FNo wetsuitWarm

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.

DayWaterLow / high
Tue 27 45.7 °F45.3–46.0 °F
Mon 26 46.0 °F46.0–46.0 °F
Sun 25 46.2 °F46.0–46.6 °F
Sat 24 46.4 °F46.2–46.6 °F
Fri 23 46.9 °F46.8–46.9 °F
Thu 22 47.1 °F46.8–47.3 °F
Wed 21 47.5 °F47.3–47.5 °F
Show all 60 days
DayWaterLow / high
Tue 20 47.5 °F47.3–47.5 °F
Mon 19 47.8 °F47.7–48.0 °F
Sun 18 48.4 °F48.0–48.7 °F
Sat 17 48.9 °F48.7–49.1 °F
Fri 16 49.6 °F49.1–50.4 °F
Thu 15 50.5 °F50.4–50.7 °F
Wed 14 51.1 °F50.9–51.6 °F
Tue 13 52.2 °F51.6–52.5 °F
Mon 12 52.9 °F52.7–53.2 °F
Sun 11 53.6 °F53.2–53.8 °F
Sat 10 54.1 °F54.0–54.1 °F
Fri 9 54.3 °F54.1–54.5 °F
Thu 8 54.3 °F54.1–54.5 °F
Wed 7 54.9 °F54.5–55.2 °F
Tue 6 55.4 °F55.4–55.6 °F
Mon 5 55.6 °F55.6–55.8 °F
Sun 4 55.8 °F55.6–55.9 °F
Sat 3 55.9 °F55.9–56.1 °F
Fri 2 55.9 °F55.8–55.9 °F
Thu 1 55.8 °F55.6–55.9 °F
Wed 30 55.6 °F55.4–56.1 °F
Tue 29 55.4 °F55.4–55.8 °F
Mon 28 55.8 °F55.4–56.3 °F
Sun 27 55.8 °F55.6–55.9 °F
Sat 26 55.9 °F55.6–56.1 °F
Fri 25 55.9 °F55.8–56.5 °F
Thu 24 56.1 °F55.9–56.3 °F
Wed 23 56.5 °F56.3–56.7 °F
Tue 22 56.8 °F56.7–57.0 °F
Mon 21 57.0 °F56.8–57.2 °F
Sun 20 57.9 °F57.4–58.8 °F
Sat 19 59.9 °F59.0–60.4 °F
Fri 18 60.6 °F60.4–60.8 °F
Thu 17 60.8 °F60.6–61.2 °F
Wed 16 60.8 °F60.3–61.5 °F
Tue 15 60.3 °F60.1–60.4 °F
Mon 14 60.1 °F60.1–60.4 °F
Sun 13 60.6 °F60.4–61.0 °F
Sat 12 61.3 °F61.0–61.9 °F
Fri 11 62.2 °F62.1–62.2 °F
Thu 10 62.6 °F62.4–62.8 °F
Wed 9 63.1 °F62.8–63.9 °F
Tue 8 64.4 °F64.0–64.8 °F
Mon 7 65.1 °F64.8–65.5 °F
Sun 6 66.0 °F65.5–66.7 °F
Sat 5 66.9 °F66.7–67.1 °F
Fri 4 67.5 °F67.1–68.0 °F
Thu 3 67.8 °F67.5–68.4 °F
Wed 2 68.0 °F67.3–68.4 °F
Tue 1 67.3 °F67.1–67.6 °F
Mon 31 68.0 °F67.8–68.0 °F
Sun 30 68.2 °F68.0–68.4 °F
Sat 29 68.4 °F68.4–68.7 °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 Loon BayQuestions

What's the water temperature today in Loon Bay?

44.2 °F; through the day it ranges 44.2–45.3 °F.

Will the water get warmer or colder?

It cools over the next few days: about 42.4 °F by Tuesday 3.

Which wetsuit do I need today?

With the water as it is today, 6/5 mm with hood, booties and gloves (very cold: full kit only). It's a rough guide: it depends on the wind and each person.

How warm is the water in Loon Bay in October?

In October, the water in Loon Bay averages 46.0 °F (1991–2020). For a long swim: 6/5 mm with hood, booties and gloves (very cold: full kit only).

How warm is the water in Loon Bay in August?

In August, the water in Loon Bay averages 56.0 °F (1991–2020), the warmest of the year. For a long swim: 5/4 mm with booties (cold: takes your breath away).

When is the best time to swim in Loon Bay?

In Loon Bay the water is cold all year: it is warmest in August (56.0 °F on average). For a long swim, wear a wetsuit. The water is warmest in August (56.0 °F on average) and coldest in March (30.9 °F).

Is the water warmer or colder than normal?

The water off Loon Bay is about normal for late October today.

More about Loon Bay today

Water temperature near Loon Bay

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 7.7 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 9:53 pm (local time).

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