Portland Water Temperature

(Today) 2024

16.3°C / 61.3°F

The water will feel medium. The water will feel a bit chilly in just bathers / swimming costume. If you plan on wearing a wetsuit 4/3mm should be thick enough.

*Live data from Portland, ME: 16.6°C / 61.9°F

Current weather

15°C / 59°F
(clear sky)
Partly cloudy
Wind
3 mph
Humidity
92%

The measurements for the water temperature in Portland, 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 Portland water temperature derived from many years of historical sea surface temperature data.

Portland average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Portland
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3.3 2.2 1.8 3.3 5 9.8 14.3 16.3 14 9.7 8 5.2
Max °C 6.5 5.1 4.7 7 10.7 15.4 19 19.4 18.2 15.9 11.2 9.3
Min °F 39.2 37.1 36.4 39.4 43.2 51.9 59.6 62.5 58.9 51.9 47.7 43
Max °F 42.4 40 39.3 43.1 48.9 57.5 64.3 65.6 63.1 58.1 50.9 47.1

The warmest water temperature is in August with an average around 64°F / 17.8°C. The coldest month is March with an average water temperature of 37.8°F / 3.2°C.

7 day tide forecast for Portland

SatSunMonTueWedThuFri
  • Low 4:49am
    (0.05m)
  • High 11:02am
    (2.58m)
  • Low 4:48pm
    (0.33m)
  • High 11:04pm
    (3.15m)
  • Low 5:35am
    (-0.09m)
  • High 11:48am
    (2.71m)
  • Low 5:37pm
    (0.21m)
  • High 11:52pm
    (3.26m)
  • Low 6:20am
    (-0.21m)
  • High 12:34pm
    (2.83m)
  • Low 6:26pm
    (0.09m)
  • High 12:41am
    (3.33m)
  • Low 7:06am
    (-0.28m)
  • High 1:21pm
    (2.95m)
  • Low 7:17pm
    (0m)
  • High 1:31am
    (3.34m)
  • Low 7:53am
    (-0.31m)
  • High 2:09pm
    (3.05m)
  • Low 8:09pm
    (-0.05m)
  • High 2:23am
    (3.29m)
  • Low 8:41am
    (-0.28m)
  • High 2:59pm
    (3.12m)
  • Low 9:04pm
    (-0.07m)
  • High 3:17am
    (3.18m)
  • Low 9:32am
    (-0.2m)
  • High 3:51pm
    (3.16m)
  • Low 10:02pm
    (-0.05m)
7 day tide times for Portland

*These tide times are estimates based on the nearest accurate location (Portland, 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.