Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

52.2°F 11.2°C
Cold Thermal Gear Required
52.2°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Wednesday, November 11, 2026, 6:42 AM EST

Temperature Locations

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Local Points of Interest

Fore River; Portland Harbor; Port of Portland; Bug Light Park; Fort Allen Park

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Gulf of Maine

Station Name: Portland
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 26 feet

Sensor Depth: -8 feet

Nearest Address:
98 Ocean Gateway Pier
Portland, ME 04101
Cumberland County

GPS Coordinates: 43.65806, -70.24417

Nearby Water Temperatures

Gulf of Maine, Cape Elizabeth, ME (10.6 mi)
Gulf of Maine, Monhegan, ME (44.6 mi)
Piscataqua River, Kittery, ME (47.1 mi)
Sheepscot River, Whitefield, ME (50.7 mi)
Gulf of Maine, Gloucester, NH (59.4 mi)
Wild River, Gilead, ME (62.4 mi)
Ducktrap River, Lincolnville, ME (74.9 mi)
Atlantic Ocean, Scituate, MA (93 mi)
Shawsheen River, Bedford, MA (97.3 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (98.8 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (98.9 mi)
Hobbs Brook, Lincoln, MA (99 mi)
Fresh Pond, Cambridge, MA (99.1 mi)
Cambridge Reservoir Tributary 3, Waltham, MA (99.7 mi)
Cambridge Reservoir, Lincoln, MA (99.9 mi)

Weather for Portland, Maine

Current Weather

41°F
Mainly Sunny
Conditions: Mainly Sunny
Humidity: 76%
Feels Like: 35.1°F
Wind: NNW 6 mph
Wind Gusts: 13.4 mph
Pressure: 29.86 in
Precipitation: 0 in
Cloud Cover: 21%
Visibility: 12.2 mi
UV Index: 0.1

Weather Forecast

Overcast
Wed
H: 52°F
L: 38°F
Light Drizzle
Thu
H: 45°F
L: 38°F
Heavy Snow
Fri
H: 39°F
L: 33°F
Light Snow
Sat
H: 42°F
L: 35°F
Overcast
Sun
H: 46°F
L: 33°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
2.5 μg/m³
Good
PM10
2.5 μg/m³
Good
Ozone (O3)
50 μg/m³
Photochemical
NO2
5.6 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
189 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 50m daylight
Sunrise 6:30 AM
Solar Noon 11:25 AM
Sunset 4:20 PM
Moon
New • 2%
Moonrise 9:09 AM
Transit 1:18 PM
Moonset 5:27 PM

Best Times for Fishing or Hunting

Major Periods

12:23 AM - 2:53 AM
12:48 PM - 3:18 PM

Minor Periods

8:39 AM - 10:09 AM
4:57 PM - 6:27 PM
Action Rating:
Good Action 3/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 45°F
Average Humidity: 65%
Chance of Rain: 8%
Wind: 8.8 mph
UV Index: 2.4

Air Quality

EPA Index 1 • Good
PM2.5
2.8 μg/m³
Good
PM10
2.9 μg/m³
Good
Ozone (O3)
55 μg/m³
Photochemical
NO2
6.6 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
194.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 50m daylight
Sunrise 6:30 AM
Solar Noon 11:25 AM
Sunset 4:20 PM
Moon
New • 2%
Moonrise 9:09 AM
Transit 1:18 PM
Moonset 5:27 PM

Best Times for Fishing or Hunting

Major Periods

12:23 AM - 2:53 AM
12:48 PM - 3:18 PM

Minor Periods

8:39 AM - 10:09 AM
4:57 PM - 6:27 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 41.7°F
Average Humidity: 69%
Chance of Rain: 79%
Wind: 14.9 mph
UV Index: 1.8

Air Quality

EPA Index 1 • Good
PM2.5
5.3 μg/m³
Good
PM10
5.7 μg/m³
Good
Ozone (O3)
53.1 μg/m³
Photochemical
NO2
12.5 μg/m³
Nitrogen Dioxide
SO2
1.2 μg/m³
Sulfur Dioxide
CO
152.4 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 47m daylight
Sunrise 6:32 AM
Solar Noon 11:25 AM
Sunset 4:19 PM
Moon
Waxing Crescent • 6%
Moonrise 10:03 AM
Transit 2:10 PM
Moonset 6:19 PM

Best Times for Fishing or Hunting

Major Periods

1:14 AM - 3:44 AM
1:40 PM - 4:10 PM

Minor Periods

9:33 AM - 11:03 AM
5:49 PM - 7:19 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Heavy Snow
Average Temperature: 35.1°F
Average Humidity: 98%
Chance of Rain: 81%
Wind: 15.2 mph
UV Index: 0.6

Air Quality

EPA Index 1 • Good
PM2.5
1.6 μg/m³
Good
PM10
1.7 μg/m³
Good
Ozone (O3)
60.7 μg/m³
Photochemical
NO2
3.6 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
133.2 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 45m daylight
Sunrise 6:33 AM
Solar Noon 11:25 AM
Sunset 4:18 PM
Moon
Waxing Crescent • 13%
Moonrise 10:48 AM
Transit 3:01 PM
Moonset 7:17 PM

Best Times for Fishing or Hunting

Major Periods

2:05 AM - 4:35 AM
2:31 PM - 5:01 PM

Minor Periods

10:18 AM - 11:48 AM
6:47 PM - 8:17 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Light Snow
Average Temperature: 37.6°F
Average Humidity: 87%
Chance of Rain: 37%
Wind: 8.4 mph
UV Index: 2

Air Quality

EPA Index 1 • Good
PM2.5
1.1 μg/m³
Good
PM10
1.2 μg/m³
Good
Ozone (O3)
57.5 μg/m³
Photochemical
NO2
3.2 μg/m³
Nitrogen Dioxide
SO2
0.8 μg/m³
Sulfur Dioxide
CO
131.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 43m daylight
Sunrise 6:34 AM
Solar Noon 11:25 AM
Sunset 4:17 PM
Moon
Waxing Crescent • 21%
Moonrise 11:25 AM
Transit 3:49 PM
Moonset 8:20 PM

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
3:19 PM - 5:49 PM

Minor Periods

10:55 AM - 12:25 PM
7:50 PM - 9:20 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 39.6°F
Average Humidity: 69%
Chance of Rain: 3%
Wind: 9.7 mph
UV Index: 2.8

Air Quality

EPA Index 1 • Good
PM2.5
1 μg/m³
Good
PM10
1 μg/m³
Good
Ozone (O3)
58.7 μg/m³
Photochemical
NO2
3.8 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
172.1 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 40m daylight
Sunrise 6:35 AM
Solar Noon 11:25 AM
Sunset 4:16 PM
Moon
Waxing Crescent • 31%
Moonrise 11:55 AM
Transit 4:36 PM
Moonset 9:25 PM

Best Times for Fishing or Hunting

Major Periods

3:43 AM - 6:13 AM
4:06 PM - 6:36 PM

Minor Periods

11:25 AM - 12:55 PM
8:55 PM - 10:25 PM
Action Rating:
Very Good 4/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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