Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

57.7°F

Measurement Time: Tuesday, July 21, 2026, 10:06 AM EDT

Today's Tides

 High: July 21, 5:15 AM, 8.9 ft
Low: July 21, 11:20 AM, 0.9 ft
 High: July 21, 5:41 PM, 9.5 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

66°F
Overcast
Overcast
66°F
64.8°F
84%
S 10.3 mph
16.1 mph
64.8°F
57.7°F
0 in
100%
9 mi
1015 mbar
3.5

Five Day Weather Forecast

Sunny
Tue
H: 71°F
L: 60°F
Patchy rain nearby
Wed
H: 74°F
L: 63°F
Sunny
Thu
H: 73°F
L: 60°F
Sunny
Fri
H: 70°F
L: 56°F
Sunny
Sat
H: 72°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 9.5 μg/m3
PM10: 12.9 μg/m3
Carbon Monoxide: 125 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:47 AM
Sunset: 8:16 PM
Daylight: 14 hrs 57 mins
Moonrise: 1:42 PM
Moon Transit: 6:45 PM
Moonset: 12:16 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
6:15 PM - 8:45 PM

Minor Periods

1:12 PM - 2:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
71.1°F
59.9°F
64.8°F
80%
0.25 in
69%
0%
16.1 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 9.38 μg/m3
PM10: 11.83 μg/m3
Carbon Monoxide: 121.79 μg/m3
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 84.13 μg/m3

Astronomical

Sunrise: 5:19 AM
Sun Transit: 12:47 AM
Sunset: 8:16 PM
Daylight: 14 hrs 57 mins
Moonrise: 1:42 PM
Moon Transit: 6:45 PM
Moonset: 12:16 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
6:15 PM - 8:45 PM

Minor Periods

1:12 PM - 2:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 22, 2026

Weather Forecast

Patchy rain nearby
73.5°F
63.2°F
67.8°F
90%
0.25 in
85%
0%
18.1 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 3.63 μg/m3
PM10: 4.3 μg/m3
Carbon Monoxide: 133.33 μg/m3
Nitrogen Dioxide: 3.06 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 90.04 μg/m3

Astronomical

Sunrise: 5:20 AM
Sun Transit: 12:47 AM
Sunset: 8:15 PM
Daylight: 14 hrs 55 mins
Moonrise: 2:49 PM
Moon Transit: 7:30 PM
Moonset: 12:39 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:20 AM - 11:50 AM
7:00 PM - 9:30 PM

Minor Periods

2:19 PM - 3:49 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
73.4°F
59.6°F
66.2°F
60%
0 in
4%
0%
13.9 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 1.49 μg/m3
PM10: 1.53 μg/m3
Carbon Monoxide: 139.42 μg/m3
Nitrogen Dioxide: 2.15 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 62.58 μg/m3

Astronomical

Sunrise: 5:21 AM
Sun Transit: 12:47 AM
Sunset: 8:14 PM
Daylight: 14 hrs 53 mins
Moonrise: 3:55 PM
Moon Transit: 8:18 PM
Moonset: 12:05 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:07 AM - 12:37 AM
7:48 PM - 10:18 PM

Minor Periods

3:25 PM - 4:55 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
69.7°F
55.9°F
63.3°F
67%
0 in
5%
0%
11.4 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 5.75 μg/m3
PM10: 6.52 μg/m3
Carbon Monoxide: 140.44 μg/m3
Nitrogen Dioxide: 4.61 μg/m3
Sulphur Dioxide: 0.34 μg/m3
Ozone: 67.92 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 12:47 AM
Sunset: 8:13 PM
Daylight: 14 hrs 51 mins
Moonrise: 4:57 PM
Moon Transit: 9:08 PM
Moonset: 12:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

10:56 AM - 1:26 PM
8:38 PM - 11:08 PM

Minor Periods

4:27 PM - 5:57 PM
12:08 AM - 1:38 AM

Action Rating: 3 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
71.6°F
57.8°F
64.5°F
73%
0 in
7%
0%
11 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 7.57 μg/m3
PM10: 8.81 μg/m3
Carbon Monoxide: 187.22 μg/m3
Nitrogen Dioxide: 8.04 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 57.89 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:47 AM
Sunset: 8:12 PM
Daylight: 14 hrs 49 mins
Moonrise: 5:54 PM
Moon Transit: 10:00 PM
Moonset: 1:16 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

11:47 AM - 2:17 PM
12:00 AM - 12:00 AM

Minor Periods

5:24 PM - 6:54 PM
12:46 AM - 2:16 AM

Action Rating: 2 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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