Deer Isle Water Temperature

(Today) 2024

6.9°C / 44.5°F

The water will feel very cold. For the hardcore only. The water is now dangerously cold and most people will risk hypothermia if not equipped with a thick, 6/5mm wetsuit along with boots and a hood

*Live data from Buoy FPenobscot Bay: 7.3°C / 45.1°F

Current weather

13°C / 55°F
(overcast clouds)
Partly cloudy
Wind
49 mph
Humidity
94%

The measurements for the water temperature in Deer Isle, Maine are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Deer Isle water temperature derived from many years of historical sea surface temperature data.

Deer Isle average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Deer Isle
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 2.2 1.7 3.1 5 7.4 11.1 12.2 11.8 9.4 7.4 5
Max °C 6.4 4.5 4.4 5.9 8.7 12.9 16 16.4 14.8 13.2 10.4 8.7
Min °F 38.8 36.8 36.1 38.7 42.4 47.5 53.9 55.6 54.4 50.4 46.5 42.4
Max °F 42.2 39.1 38.8 41.5 46.1 53 58.8 59.8 57.4 54.2 49.5 46.1

The warmest water temperature is in August with an average around 57.7°F / 14.3°C. The coldest month is March with an average water temperature of 37.4°F / 3.0°C.

7 day tide forecast for Deer Isle

ThuFriSatSunMonTueWed
  • Low 1:16am
    (0.03m)
  • High 7:35am
    (3.58m)
  • Low 2:02pm
    (-0.24m)
  • High 8:15pm
    (3.16m)
  • Low 2:12am
    (0m)
  • High 8:30am
    (3.71m)
  • Low 2:58pm
    (-0.39m)
  • High 9:12pm
    (3.2m)
  • Low 3:06am
    (-0.02m)
  • High 9:22am
    (3.79m)
  • Low 3:52pm
    (-0.47m)
  • High 10:06pm
    (3.22m)
  • Low 3:57am
    (-0.02m)
  • High 10:13am
    (3.81m)
  • Low 4:43pm
    (-0.49m)
  • High 10:58pm
    (3.2m)
  • Low 4:48am
    (0.01m)
  • High 11:03am
    (3.77m)
  • Low 5:33pm
    (-0.44m)
  • High 11:48pm
    (3.15m)
  • Low 5:38am
    (0.08m)
  • High 11:53am
    (3.67m)
  • Low 6:22pm
    (-0.34m)
  • High 12:38am
    (3.08m)
  • Low 6:28am
    (0.17m)
  • High 12:42pm
    (3.52m)
  • Low 7:11pm
    (-0.2m)
7 day tide times for Deer Isle

*These tide times are estimates based on the nearest accurate location (Northwest Harbor, Deer Isle, Penobscot Bay, Maine) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.