Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

59.4°F

Measurement Time: Tuesday, July 28, 2026, 10:48 AM EDT

Today's Tides

Low: July 28, 5:17 AM, 0.6 ft
 High: July 28, 11:28 AM, 8.3 ft
Low: July 28, 5:12 PM, 1.5 ft
 High: July 28, 11:28 PM, 9.7 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

69.8°F
Overcast
Overcast
69.8°F
68.5°F
83%
SSE 9.2 mph
11.5 mph
68.5°F
65.1°F
0 in
100%
10 mi
1006 mbar
4.5

Five Day Weather Forecast

Sunny
Tue
H: 69°F
L: 60°F
Partly Cloudy
Wed
H: 72°F
L: 64°F
Moderate rain
Thu
H: 64°F
L: 60°F
Patchy rain nearby
Fri
H: 70°F
L: 63°F
Partly Cloudy
Sat
H: 69°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 17.7 μg/m3
PM10: 21.2 μg/m3
Carbon Monoxide: 146 μg/m3
Nitrogen Dioxide: 4.9 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:47 AM
Sunset: 8:09 PM
Daylight: 14 hrs 43 mins
Moonrise: 7:58 PM
Moon Transit: 12:00 AM
Moonset: 4:04 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:19 PM - 4:49 PM

Minor Periods

7:28 PM - 8:58 PM
3:34 AM - 5:04 AM

Action Rating: 4 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
68.5°F
60.4°F
64.5°F
93%
0 in
23%
0%
11.9 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 12.04 μg/m3
PM10: 15.23 μg/m3
Carbon Monoxide: 115.46 μg/m3
Nitrogen Dioxide: 4.84 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 90 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:47 AM
Sunset: 8:09 PM
Daylight: 14 hrs 43 mins
Moonrise: 7:58 PM
Moon Transit: 12:00 AM
Moonset: 4:04 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:19 PM - 4:49 PM

Minor Periods

7:28 PM - 8:58 PM
3:34 AM - 5:04 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Partly Cloudy
72°F
63.9°F
67.8°F
84%
0 in
24%
0%
11.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.81 μg/m3
PM10: 11.12 μg/m3
Carbon Monoxide: 95.33 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 64.92 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:47 AM
Sunset: 8:07 PM
Daylight: 14 hrs 41 mins
Moonrise: 8:26 PM
Moon Transit: 12:30 AM
Moonset: 5:10 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
3:07 PM - 5:37 PM

Minor Periods

7:56 PM - 9:26 PM
4:40 AM - 6:10 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Moderate rain
64.1°F
60.3°F
62.6°F
94%
1.61 in
92%
0%
22.1 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 4.11 μg/m3
PM10: 5.66 μg/m3
Carbon Monoxide: 101.75 μg/m3
Nitrogen Dioxide: 2.71 μg/m3
Sulphur Dioxide: 0.54 μg/m3
Ozone: 70.71 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 12:47 AM
Sunset: 8:06 PM
Daylight: 14 hrs 38 mins
Moonrise: 8:48 PM
Moon Transit: 1:17 AM
Moonset: 6:18 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:47 AM - 3:17 AM
3:52 PM - 6:22 PM

Minor Periods

8:18 PM - 9:48 PM
5:48 AM - 7:18 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Patchy rain nearby
69.5°F
62.5°F
65.3°F
91%
0.09 in
78%
0%
15.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 2.61 μg/m3
PM10: 3.3 μg/m3
Carbon Monoxide: 131.93 μg/m3
Nitrogen Dioxide: 3.63 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 76.75 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:47 AM
Sunset: 8:05 PM
Daylight: 14 hrs 36 mins
Moonrise: 9:08 PM
Moon Transit: 2:01 AM
Moonset: 7:25 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:31 AM - 4:01 AM
4:36 PM - 7:06 PM

Minor Periods

8:38 PM - 10:08 PM
6:55 AM - 8:25 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Partly Cloudy
69.4°F
61°F
64.6°F
90%
0 in
22%
0%
8.9 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 2.49 μg/m3
PM10: 2.86 μg/m3
Carbon Monoxide: 231.22 μg/m3
Nitrogen Dioxide: 3.92 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 67.89 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:47 AM
Sunset: 8:04 PM
Daylight: 14 hrs 34 mins
Moonrise: 9:27 PM
Moon Transit: 2:45 AM
Moonset: 8:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
5:19 PM - 7:49 PM

Minor Periods

8:57 PM - 10:27 PM
8:03 AM - 9:33 AM

Action Rating: 3 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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