Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

38.5°F

Measurement Time: Sunday, December 14, 2025, 11:00 PM EST

Today's Tides

Low: December 14, 12:27 AM, 1.19 ft
 High: December 14, 6:47 AM, 8.98 ft
Low: December 14, 1:10 PM, 1.06 ft
 High: December 14, 7:18 PM, 8.16 ft

Temperature Locations

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Local Points of Interest

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

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Gulf of Maine

Station Name: Portland
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 26 feet / 8 meters

Sensor Depth: -8.1 feet / -2.5 meters

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 (93.0 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 (99.0 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

19.9°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 52%
Feels Like: 5.1°F
Wind: NNW 17.4 mph
Wind Gusts: 23 mph
Pressure: 29.91 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Light freezing rain
Sun
H: 33°F
L: 20°F
Sunny
Mon
H: 26°F
L: 15°F
Partly Cloudy
Tue
H: 36°F
L: 23°F
Overcast
Wed
H: 41°F
L: 31°F
Partly Cloudy
Thu
H: 40°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 3.45 μg/m3
PM10: 3.55 μg/m3
Carbon Monoxide: 167.85 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 11:35 AM
Sunset: 4:05 PM
Daylight: 8 hrs 58 mins
Moonrise: 1:57 AM
Moon Transit: 7:24 AM
Moonset: 12:43 AM
Moon Phase: Last Quarter
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
12:00 AM - 12:00 AM

Minor Periods

12:13 AM - 1:43 PM
1:27 AM - 2:57 AM

Action Rating: 3 out of 5

Sunday, December 14, 2025

Weather Forecast

Conditions: Light freezing rain
Average Temperature: 28.3°F
Average Humidity: 72%
Chance of Rain: 88%
Wind: 17.4 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 9.62 μg/m3
PM10: 9.67 μg/m3
Carbon Monoxide: 220.25 μg/m3
Nitrogen Dioxide: 12.65 μg/m3
Sulphur Dioxide: 4.06 μg/m3
Ozone: 53.52 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 11:35 AM
Sunset: 4:05 PM
Daylight: 8 hrs 58 mins
Moonrise: 1:57 AM
Moon Transit: 7:24 AM
Moonset: 12:43 AM
Moon Phase: Last Quarter
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
12:00 AM - 12:00 AM

Minor Periods

12:13 AM - 1:43 PM
1:27 AM - 2:57 AM

Action Rating: 3 out of 5

Monday, December 15, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 20.4°F
Average Humidity: 63%
Chance of Rain: 0%
Wind: 17.9 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.96 μg/m3
PM10: 3.04 μg/m3
Carbon Monoxide: 169.93 μg/m3
Nitrogen Dioxide: 4.56 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 67.28 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 11:36 AM
Sunset: 4:05 PM
Daylight: 8 hrs 57 mins
Moonrise: 3:01 AM
Moon Transit: 8:06 AM
Moonset: 1:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.7%

Best Times for Fishing or Hunting

Major Periods

7:36 AM - 10:06 AM
12:00 AM - 12:00 AM

Minor Periods

12:34 AM - 2:04 PM
2:31 AM - 4:01 AM

Action Rating: 3 out of 5

Tuesday, December 16, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 28.3°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 14.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 4.49 μg/m3
PM10: 4.6 μg/m3
Carbon Monoxide: 197.25 μg/m3
Nitrogen Dioxide: 7.22 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 67.32 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 11:36 AM
Sunset: 4:05 PM
Daylight: 8 hrs 57 mins
Moonrise: 4:06 AM
Moon Transit: 8:50 AM
Moonset: 1:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

8:20 AM - 10:50 AM
12:00 AM - 12:00 AM

Minor Periods

12:58 AM - 2:28 PM
3:36 AM - 5:06 AM

Action Rating: 2 out of 5

Wednesday, December 17, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 35.9°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 22.1 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 13.16 μg/m3
PM10: 13.39 μg/m3
Carbon Monoxide: 253.8 μg/m3
Nitrogen Dioxide: 17.41 μg/m3
Sulphur Dioxide: 5.75 μg/m3
Ozone: 48.44 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 11:37 AM
Sunset: 4:05 PM
Daylight: 8 hrs 56 mins
Moonrise: 5:11 AM
Moon Transit: 9:37 AM
Moonset: 1:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

1:28 PM - 2:58 PM
4:41 AM - 6:11 AM

Action Rating: 2 out of 5

Thursday, December 18, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 37.4°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 21.7 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 14.1 μg/m3
PM10: 14.38 μg/m3
Carbon Monoxide: 259.78 μg/m3
Nitrogen Dioxide: 12.62 μg/m3
Sulphur Dioxide: 2.66 μg/m3
Ozone: 50.08 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 11:37 AM
Sunset: 4:06 PM
Daylight: 8 hrs 56 mins
Moonrise: 6:15 AM
Moon Transit: 10:26 AM
Moonset: 2:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:56 AM - 12:26 AM

Minor Periods

2:06 PM - 3:36 PM
5:45 AM - 7:15 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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