Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

46.2°F

Measurement Time: Thursday, April 30, 2026, 11:48 PM EDT

Today's Tides

Low: April 30, 5:05 AM, -0.1 ft
 High: April 30, 11:16 AM, 9.2 ft
Low: April 30, 5:14 PM, 0.7 ft
 High: April 30, 11:25 PM, 10.0 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

46.9°F
Partly cloudy
Partly cloudy
44.4°F
45.2°F
97%
NNW 5.4 mph
8.1 mph
42.2°F
43.9°F
0 in
75%
9 mi
1006 mbar
0

Five Day Weather Forecast

Moderate rain
Thu
H: 47°F
L: 44°F
Sunny
Fri
H: 55°F
L: 44°F
Patchy rain nearby
Sat
H: 46°F
L: 43°F
Moderate rain
Sun
H: 52°F
L: 42°F
Sunny
Mon
H: 58°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 2.45 μg/m3
PM10: 2.45 μg/m3
Carbon Monoxide: 157.85 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:38 AM
Sunset: 7:42 PM
Daylight: 14 hrs 8 mins
Moonrise: 7:03 PM
Moon Transit: 12:00 AM
Moonset: 4:42 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:58 PM - 4:28 PM

Minor Periods

6:33 PM - 8:03 PM
4:12 AM - 5:42 AM

Action Rating: 5 out of 5

Thursday, April 30, 2026

Weather Forecast

Moderate rain
46.8°F
43.5°F
45.6°F
98%
0.63 in
88%
0%
8.3 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 5.47 μg/m3
PM10: 7.23 μg/m3
Carbon Monoxide: 143.81 μg/m3
Nitrogen Dioxide: 5.33 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 82.92 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:38 AM
Sunset: 7:42 PM
Daylight: 14 hrs 8 mins
Moonrise: 7:03 PM
Moon Transit: 12:00 AM
Moonset: 4:42 AM
Moon Phase: Full
Moon Illumination: 99.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:58 PM - 4:28 PM

Minor Periods

6:33 PM - 8:03 PM
4:12 AM - 5:42 AM

Action Rating: 5 out of 5

Friday, May 1, 2026

Weather Forecast

Sunny
55.1°F
44.2°F
49.2°F
68%
0 in
0%
0%
7.8 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 3.38 μg/m3
PM10: 3.53 μg/m3
Carbon Monoxide: 159.69 μg/m3
Nitrogen Dioxide: 6.55 μg/m3
Sulphur Dioxide: 1.62 μg/m3
Ozone: 71.88 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 12:38 AM
Sunset: 7:43 PM
Daylight: 14 hrs 10 mins
Moonrise: 8:10 PM
Moon Transit: 12:07 AM
Moonset: 5:04 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:43 PM - 5:13 PM

Minor Periods

7:40 PM - 9:10 PM
4:34 AM - 6:04 AM

Action Rating: 4 out of 5

Saturday, May 2, 2026

Weather Forecast

Patchy rain nearby
46.4°F
43.4°F
44.9°F
81%
0.13 in
87%
0%
6.3 mph
3.9


Air Quality

AQI: 1 - Good
PM2.5: 8.6 μg/m3
PM10: 9.67 μg/m3
Carbon Monoxide: 182.85 μg/m3
Nitrogen Dioxide: 10.37 μg/m3
Sulphur Dioxide: 2.14 μg/m3
Ozone: 66.8 μg/m3

Astronomical

Sunrise: 5:32 AM
Sun Transit: 12:37 AM
Sunset: 7:45 PM
Daylight: 14 hrs 13 mins
Moonrise: 9:16 PM
Moon Transit: 12:53 AM
Moonset: 5:29 AM
Moon Phase: Full
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:23 AM - 2:53 AM
3:30 PM - 6:00 PM

Minor Periods

8:46 PM - 10:16 PM
4:59 AM - 6:29 AM

Action Rating: 3 out of 5

Sunday, May 3, 2026

Weather Forecast

Moderate rain
52.3°F
41.7°F
45.3°F
79%
0.48 in
79%
0%
15.7 mph
3.4


Air Quality

AQI: 1 - Good
PM2.5: 8.87 μg/m3
PM10: 9.27 μg/m3
Carbon Monoxide: 166.4 μg/m3
Nitrogen Dioxide: 8.04 μg/m3
Sulphur Dioxide: 2.14 μg/m3
Ozone: 76.56 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:37 AM
Sunset: 7:46 PM
Daylight: 14 hrs 16 mins
Moonrise: 10:19 PM
Moon Transit: 1:41 AM
Moonset: 6:01 AM
Moon Phase: Full
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

1:11 AM - 3:41 AM
4:19 PM - 6:49 PM

Minor Periods

9:49 PM - 11:19 PM
5:31 AM - 7:01 AM

Action Rating: 4 out of 5

Monday, May 4, 2026

Weather Forecast

Sunny
58°F
41.3°F
50.1°F
65%
0 in
0%
0%
15 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 175.82 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 67.15 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:37 AM
Sunset: 7:47 PM
Daylight: 14 hrs 18 mins
Moonrise: 11:17 PM
Moon Transit: 2:30 AM
Moonset: 6:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

2:00 AM - 4:30 AM
5:10 PM - 7:40 PM

Minor Periods

12:00 AM - 12:00 AM
6:10 AM - 7:40 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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