Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

39.7°F

Measurement Time: Tuesday, March 31, 2026, 5:54 PM EDT

Today's Tides

Low: March 31, 4:36 AM, 0.0 ft
 High: March 31, 10:50 AM, 9.9 ft
Low: March 31, 5:01 PM, -0.2 ft
 High: March 31, 11:14 PM, 9.9 ft

Temperature Locations

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Local Points of Interest

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

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

41.4°F
Overcast
Overcast
35.6°F
40.3°F
93%
ENE 9.4 mph
12.8 mph
36.5°F
37.5°F
0 in
100%
9 mi
1015 mbar
0

Five Day Weather Forecast

Moderate rain
Tue
H: 44°F
L: 37°F
Moderate rain
Wed
H: 46°F
L: 37°F
Patchy rain nearby
Thu
H: 35°F
L: 34°F
Mist
Fri
H: 46°F
L: 36°F
Sunny
Sat
H: 49°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 12.65 μg/m3
PM10: 13.35 μg/m3
Carbon Monoxide: 228.85 μg/m3
Nitrogen Dioxide: 11.05 μg/m3
Sulphur Dioxide: 2.65 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:54 PM
Moon Transit: 12:00 AM
Moonset: 5:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:53 PM - 4:23 PM

Minor Periods

5:24 PM - 6:54 PM
5:09 AM - 6:39 AM

Action Rating: 4 out of 5

Tuesday, March 31, 2026

Weather Forecast

Moderate rain
43.5°F
37.4°F
41.6°F
84%
0.48 in
88%
0%
12.3 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 12.24 μg/m3
PM10: 14.08 μg/m3
Carbon Monoxide: 206.81 μg/m3
Nitrogen Dioxide: 7.54 μg/m3
Sulphur Dioxide: 3.56 μg/m3
Ozone: 79.44 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 12 hrs 42 mins
Moonrise: 5:54 PM
Moon Transit: 12:00 AM
Moonset: 5:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:53 PM - 4:23 PM

Minor Periods

5:24 PM - 6:54 PM
5:09 AM - 6:39 AM

Action Rating: 4 out of 5

Wednesday, April 1, 2026

Weather Forecast

Moderate rain
46°F
37°F
40.7°F
87%
0.51 in
88%
0%
10.3 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 7 μg/m3
PM10: 7.41 μg/m3
Carbon Monoxide: 198.17 μg/m3
Nitrogen Dioxide: 9.01 μg/m3
Sulphur Dioxide: 2.76 μg/m3
Ozone: 64.76 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:00 AM
Sunset: 7:08 PM
Daylight: 12 hrs 45 mins
Moonrise: 7:01 PM
Moon Transit: 12:02 AM
Moonset: 5:58 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:35 PM - 5:05 PM

Minor Periods

6:31 PM - 8:01 PM
5:28 AM - 6:58 AM

Action Rating: 3 out of 5

Thursday, April 2, 2026

Weather Forecast

Patchy rain nearby
35.1°F
34.2°F
35.7°F
84%
0.15 in
85%
0%
13.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 2.35 μg/m3
PM10: 2.62 μg/m3
Carbon Monoxide: 170.01 μg/m3
Nitrogen Dioxide: 3.81 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 84.04 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:44 AM
Sunset: 7:09 PM
Daylight: 12 hrs 48 mins
Moonrise: 8:08 PM
Moon Transit: 12:44 AM
Moonset: 6:17 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:14 AM - 2:44 AM
3:18 PM - 5:48 PM

Minor Periods

7:38 PM - 9:08 PM
5:47 AM - 7:17 AM

Action Rating: 4 out of 5

Friday, April 3, 2026

Weather Forecast

Mist
46.3°F
36.1°F
41.7°F
93%
0 in
0%
0%
15 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 5.61 μg/m3
PM10: 7.07 μg/m3
Carbon Monoxide: 165.03 μg/m3
Nitrogen Dioxide: 5.45 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 81.76 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 12:44 AM
Sunset: 7:10 PM
Daylight: 12 hrs 51 mins
Moonrise: 9:15 PM
Moon Transit: 1:27 AM
Moonset: 6:37 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

12:57 AM - 3:27 AM
4:02 PM - 6:32 PM

Minor Periods

8:45 PM - 10:15 PM
6:07 AM - 7:37 AM

Action Rating: 4 out of 5

Saturday, April 4, 2026

Weather Forecast

Sunny
49.3°F
38.8°F
45.6°F
66%
0 in
0%
0%
15.4 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 6.95 μg/m3
PM10: 7.04 μg/m3
Carbon Monoxide: 200.9 μg/m3
Nitrogen Dioxide: 6.79 μg/m3
Sulphur Dioxide: 2.7 μg/m3
Ozone: 82.15 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:43 AM
Sunset: 7:11 PM
Daylight: 12 hrs 54 mins
Moonrise: 10:22 PM
Moon Transit: 2:11 AM
Moonset: 7:00 AM
Moon Phase: Full
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
4:47 PM - 7:17 PM

Minor Periods

9:52 PM - 11:22 PM
6:30 AM - 8:00 AM

Action Rating: 5 out of 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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