Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

57.9°F

Measurement Time: Wednesday, October 7, 2026, 1:54 AM EDT

Today's Tides

Low: October 7, 2:49 AM, 0.1 ft
 High: October 7, 9:05 AM, 9.3 ft
Low: October 7, 3:09 PM, 0.5 ft
 High: October 7, 9:25 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

46.8°F
Clear
Conditions: Clear
Humidity: 55%
Feels Like: 43.9°F
Wind: W 6 mph
Wind Gusts: 7.2 mph
Pressure: 30.03 in
Precipitation: 0 in
Cloud Cover: 2%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Wed
H: 59°F
L: 45°F
Sunny
Thu
H: 67°F
L: 55°F
Sunny
Fri
H: 62°F
L: 51°F
Sunny
Sat
H: 60°F
L: 46°F
Overcast
Sun
H: 65°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 2.6 μg/m3
PM10: 3.1 μg/m3
Carbon Monoxide: 139 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:28 AM
Sunset: 6:11 PM
Daylight: 11 hrs 25 mins
Moonrise: 3:15 AM
Moon Transit: 10:07 AM
Moonset: 4:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:16 PM - 5:46 PM
2:45 AM - 4:15 AM

Action Rating: 3 out of 5

Freeze Warning issued October 6 at 1:12PM EDT until October 7 at 8:00AM EDT by NWS Gray ME

Effective: Tue October 6, 2026, 1:12 PM
Expires: Wed October 7, 2026, 1:15 AM

* WHAT...Sub-freezing temperatures as low as 25F expected. * WHERE...Central Interior Cumberland and Androscoggin Counties. * WHEN...From midnight tonight to 8 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.
Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 52.4°F
Average Humidity: 57%
Chance of Rain: 4%
Wind: 19 mph
UV Index: 3.7

Air Quality

AQI: 1 - Good
PM2.5: 4.49 μg/m3
PM10: 5.56 μg/m3
Carbon Monoxide: 141.58 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 66.79 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:28 AM
Sunset: 6:11 PM
Daylight: 11 hrs 25 mins
Moonrise: 3:15 AM
Moon Transit: 10:07 AM
Moonset: 4:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:16 PM - 5:46 PM
2:45 AM - 4:15 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 59.3°F
Average Humidity: 70%
Chance of Rain: 36%
Wind: 17.2 mph
UV Index: 3.5

Air Quality

AQI: 1 - Good
PM2.5: 6.25 μg/m3
PM10: 6.62 μg/m3
Carbon Monoxide: 177.08 μg/m3
Nitrogen Dioxide: 5.79 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 75.88 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:28 AM
Sunset: 6:10 PM
Daylight: 11 hrs 22 mins
Moonrise: 4:28 AM
Moon Transit: 10:53 AM
Moonset: 5:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
10:23 AM - 12:53 AM

Minor Periods

4:36 PM - 6:06 PM
3:58 AM - 5:28 AM

Action Rating: 3 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 56.3°F
Average Humidity: 58%
Chance of Rain: 3%
Wind: 20.6 mph
UV Index: 3.3

Air Quality

AQI: 1 - Good
PM2.5: 1.18 μg/m3
PM10: 1.2 μg/m3
Carbon Monoxide: 135.54 μg/m3
Nitrogen Dioxide: 2.97 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 61.29 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 12:28 AM
Sunset: 6:08 PM
Daylight: 11 hrs 20 mins
Moonrise: 5:39 AM
Moon Transit: 11:38 AM
Moonset: 5:25 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
11:08 AM - 1:38 PM

Minor Periods

4:55 PM - 6:25 PM
5:09 AM - 6:39 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 53.1°F
Average Humidity: 59%
Chance of Rain: 3%
Wind: 10.5 mph
UV Index: 3.6

Air Quality

AQI: 1 - Good
PM2.5: 3.06 μg/m3
PM10: 3.61 μg/m3
Carbon Monoxide: 150.66 μg/m3
Nitrogen Dioxide: 6.22 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 53.04 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:27 AM
Sunset: 6:06 PM
Daylight: 11 hrs 17 mins
Moonrise: 6:49 AM
Moon Transit: 12:22 AM
Moonset: 5:46 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

2:13 AM - 4:43 AM
11:52 AM - 2:22 PM

Minor Periods

5:16 PM - 6:46 PM
6:19 AM - 7:49 AM

Action Rating: 3 out of 5

Sunday, October 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 59.1°F
Average Humidity: 71%
Chance of Rain: 17%
Wind: 16.3 mph
UV Index: 4

Air Quality

AQI: 1 - Good
PM2.5: 7.39 μg/m3
PM10: 7.91 μg/m3
Carbon Monoxide: 226.33 μg/m3
Nitrogen Dioxide: 10.7 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 49.56 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:27 AM
Sunset: 6:04 PM
Daylight: 11 hrs 14 mins
Moonrise: 7:59 AM
Moon Transit: 1:08 PM
Moonset: 6:09 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
12:38 AM - 3:08 PM

Minor Periods

5:39 PM - 7:09 PM
7:29 AM - 8:59 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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