Water Temperature of the Gulf of Maine in Portland, ME

Current Water Temperature

59.4°F

Measurement Time: Tuesday, July 7, 2026, 7:06 AM EDT

Today's Tides

 High: July 7, 4:34 AM, 9.1 ft
Low: July 7, 10:47 AM, 0.5 ft
 High: July 7, 5:06 PM, 9.5 ft
Low: July 7, 11:20 PM, 0.8 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

61°F
Overcast
Overcast
61°F
60.3°F
100%
ESE 3.8 mph
5.5 mph
60.3°F
60.3°F
0 in
100%
8 mi
1022 mbar
0.3

Five Day Weather Forecast

Fog
Tue
H: 69°F
L: 60°F
Sunny
Wed
H: 73°F
L: 58°F
Sunny
Thu
H: 84°F
L: 64°F
Sunny
Fri
H: 78°F
L: 66°F
Sunny
Sat
H: 78°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 8.5 μg/m3
PM10: 11.9 μg/m3
Carbon Monoxide: 143 μg/m3
Nitrogen Dioxide: 5.8 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 53 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:46 AM
Sunset: 8:25 PM
Daylight: 15 hrs 18 mins
Moonrise: 12:40 AM
Moon Transit: 6:12 AM
Moonset: 12:59 AM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

5:42 AM - 8:12 AM
8:49 PM - 11:19 PM

Minor Periods

12:29 AM - 1:59 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Small Craft Advisory issued July 6 at 2:43PM EDT until July 8 at 2:00AM EDT by NWS Gray ME

Effective: Mon July 6, 2026, 2:43 PM
Expires: Tue July 7, 2026, 5:30 AM

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and seas 1 to 4 ft expected. * WHERE...Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM. * WHEN...From 8 AM Tuesday to 2 AM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued July 7 at 2:58AM EDT until July 8 at 2:00AM EDT by NWS Gray ME

Effective: Tue July 7, 2026, 2:58 AM
Expires: Tue July 7, 2026, 5:00 PM

* WHAT...Seas 2 to 5 ft expected. * WHERE...Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM. * WHEN...From 8 AM this morning to 2 AM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Tuesday, July 7, 2026

Weather Forecast

Fog
68.9°F
59.9°F
62.5°F
94%
0.03 in
66%
0%
9.8 mph
5.1


Air Quality

AQI: 1 - Good
PM2.5: 9.63 μg/m3
PM10: 13 μg/m3
Carbon Monoxide: 140.75 μg/m3
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 65.25 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:46 AM
Sunset: 8:25 PM
Daylight: 15 hrs 18 mins
Moonrise: 12:40 AM
Moon Transit: 6:12 AM
Moonset: 12:59 AM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

5:42 AM - 8:12 AM
8:49 PM - 11:19 PM

Minor Periods

12:29 AM - 1:59 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 8, 2026

Weather Forecast

Sunny
73.1°F
57.7°F
66.2°F
76%
0 in
11%
0%
11.2 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 9.08 μg/m3
PM10: 11.28 μg/m3
Carbon Monoxide: 136 μg/m3
Nitrogen Dioxide: 3.08 μg/m3
Sulphur Dioxide: 0.51 μg/m3
Ozone: 67.25 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:24 PM
Daylight: 15 hrs 17 mins
Moonrise: 12:02 AM
Moon Transit: 7:00 AM
Moonset: 2:13 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
12:00 AM - 12:00 AM

Minor Periods

1:43 PM - 3:13 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Sunny
84.3°F
63.6°F
74.8°F
65%
0 in
5%
0%
8.7 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 8.16 μg/m3
PM10: 9.11 μg/m3
Carbon Monoxide: 167.38 μg/m3
Nitrogen Dioxide: 3.79 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 94.88 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:24 PM
Daylight: 15 hrs 16 mins
Moonrise: 12:27 AM
Moon Transit: 7:51 AM
Moonset: 3:31 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:21 AM - 9:51 AM
12:00 AM - 12:00 AM

Minor Periods

3:01 PM - 4:31 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
77.8°F
66.3°F
70.1°F
84%
0.67 in
81%
0%
8.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 9.08 μg/m3
PM10: 9.91 μg/m3
Carbon Monoxide: 176.5 μg/m3
Nitrogen Dioxide: 4.31 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 103.04 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 12:46 AM
Sunset: 8:23 PM
Daylight: 15 hrs 14 mins
Moonrise: 12:58 AM
Moon Transit: 8:47 AM
Moonset: 4:52 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:17 AM - 10:47 AM
12:00 AM - 12:00 AM

Minor Periods

4:22 PM - 5:52 PM
12:28 AM - 1:58 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Sunny
77.7°F
61.4°F
69.7°F
64%
0 in
5%
0%
9.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 8.69 μg/m3
PM10: 9.13 μg/m3
Carbon Monoxide: 260.78 μg/m3
Nitrogen Dioxide: 5.36 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 80.11 μg/m3

Astronomical

Sunrise: 5:10 AM
Sun Transit: 12:46 AM
Sunset: 8:23 PM
Daylight: 15 hrs 13 mins
Moonrise: 1:39 AM
Moon Transit: 9:50 AM
Moonset: 6:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:20 AM - 11:50 AM

Minor Periods

5:40 PM - 7:10 PM
1:09 AM - 2:39 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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