Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

47.5°F

Measurement Time: Thursday, May 14, 2026, 10:48 PM EDT

Today's Tides

Low: May 14, 3:17 AM, 0.1 ft
 High: May 14, 9:28 AM, 9.3 ft
Low: May 14, 3:29 PM, 0.3 ft
 High: May 14, 9:45 PM, 10.6 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

50.4°F
Light rain
Light rain
45.3°F
49°F
100%
E 14.1 mph
21.6 mph
41.9°F
48.2°F
0.32 in
100%
3 mi
1008 mbar
0

Five Day Weather Forecast

Heavy rain
Thu
H: 53°F
L: 47°F
Heavy rain
Fri
H: 50°F
L: 48°F
Sunny
Sat
H: 66°F
L: 47°F
Sunny
Sun
H: 74°F
L: 58°F
Sunny
Mon
H: 61°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 123.85 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:37 AM
Sunset: 7:58 PM
Daylight: 14 hrs 42 mins
Moonrise: 3:36 AM
Moon Transit: 10:29 AM
Moonset: 5:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
9:59 AM - 12:29 AM

Minor Periods

5:09 PM - 6:39 PM
3:06 AM - 4:36 AM

Action Rating: 2 out of 5

Thursday, May 14, 2026

Weather Forecast

Heavy rain
53.4°F
46.9°F
49.6°F
93%
1.29 in
80%
0%
15.4 mph
3.2


Air Quality

AQI: 1 - Good
PM2.5: 9.48 μg/m3
PM10: 13.4 μg/m3
Carbon Monoxide: 135.29 μg/m3
Nitrogen Dioxide: 3.79 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 93.2 μg/m3

Astronomical

Sunrise: 5:17 AM
Sun Transit: 12:37 AM
Sunset: 7:58 PM
Daylight: 14 hrs 42 mins
Moonrise: 3:36 AM
Moon Transit: 10:29 AM
Moonset: 5:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
9:59 AM - 12:29 AM

Minor Periods

5:09 PM - 6:39 PM
3:06 AM - 4:36 AM

Action Rating: 2 out of 5

Friday, May 15, 2026

Weather Forecast

Heavy rain
50.4°F
48°F
48.9°F
97%
1.31 in
92%
0%
14.3 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 5.54 μg/m3
Carbon Monoxide: 139.73 μg/m3
Nitrogen Dioxide: 4.14 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 77.16 μg/m3

Astronomical

Sunrise: 5:16 AM
Sun Transit: 12:37 AM
Sunset: 8:00 PM
Daylight: 14 hrs 44 mins
Moonrise: 4:02 AM
Moon Transit: 11:23 AM
Moonset: 7:02 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
10:53 AM - 1:23 PM

Minor Periods

6:32 PM - 8:02 PM
3:32 AM - 5:02 AM

Action Rating: 5 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
66.1°F
46.5°F
56.7°F
76%
0 in
0%
0%
11.4 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 3.95 μg/m3
PM10: 4.47 μg/m3
Carbon Monoxide: 168.59 μg/m3
Nitrogen Dioxide: 3.91 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 82.92 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:37 AM
Sunset: 8:01 PM
Daylight: 14 hrs 46 mins
Moonrise: 4:34 AM
Moon Transit: 12:23 AM
Moonset: 8:27 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

2:07 AM - 4:37 AM
11:53 AM - 2:23 PM

Minor Periods

7:57 PM - 9:27 PM
4:04 AM - 5:34 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Sunny
74.3°F
57.6°F
64.8°F
61%
0 in
0%
0%
13.2 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 6.47 μg/m3
PM10: 6.86 μg/m3
Carbon Monoxide: 175.86 μg/m3
Nitrogen Dioxide: 4.08 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 90.32 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:37 AM
Sunset: 8:02 PM
Daylight: 14 hrs 48 mins
Moonrise: 5:16 AM
Moon Transit: 1:27 PM
Moonset: 9:47 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
12:57 AM - 3:27 PM

Minor Periods

9:17 PM - 10:47 PM
4:46 AM - 6:16 AM

Action Rating: 5 out of 5

Monday, May 18, 2026

Weather Forecast

Sunny
61.1°F
52.7°F
56.6°F
68%
0 in
0%
0%
13.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 2.3 μg/m3
PM10: 2.32 μg/m3
Carbon Monoxide: 147.47 μg/m3
Nitrogen Dioxide: 3.67 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 55.77 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:37 AM
Sunset: 8:03 PM
Daylight: 14 hrs 50 mins
Moonrise: 6:12 AM
Moon Transit: 2:34 PM
Moonset: 10:58 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

4:16 AM - 6:46 AM
2:04 PM - 4:34 PM

Minor Periods

10:28 PM - 11:58 PM
5:42 AM - 7:12 AM

Action Rating: 4 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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