Nearby Harbors
42.8188’ N, 70.8100’ W

Merrimack River Entrance, MA

51°
H -°
L 51°
NNE
10mph
Low tide
6:59 am
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Merrimack River Entrance, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Oct 11 		Showers -º / 51º 60% NNE 10 mph 92%
Mon
Oct 12 		AM Clouds/PM Sun
View Hourly 		70º / 51º 19% NW 7 mph 77%
3am Showers 51º 49% NNE 10 mph 96%
4am Showers 51º 35% NNE 10 mph 96%
5am Cloudy 51º 5% NNE 9 mph 93%
6am Cloudy 53º 15% N 7 mph 93%
7am Cloudy 52º 15% N 6 mph 96%
8am Cloudy 52º 15% NNW 6 mph 96%
9am Mostly Cloudy 54º 17% NNW 5 mph 92%
10am Partly Cloudy 56º 20% NNW 4 mph 87%
11am Partly Cloudy 59º 18% NW 4 mph 81%
12pm Mostly Sunny 62º 4% WNW 3 mph 76%
1pm Sunny 65º 3% WNW 3 mph 71%
2pm Mostly Sunny 66º 3% WNW 4 mph 68%
3pm Sunny 68º 2% WNW 5 mph 65%
4pm Sunny 68º 1% WNW 6 mph 64%
5pm Sunny 68º 2% WNW 7 mph 65%
6pm Mostly Sunny 65º 3% NW 6 mph 69%
7pm Partly Cloudy 63º 3% NW 6 mph 74%
8pm Mostly Cloudy 61º 5% NW 6 mph 78%
9pm Mostly Cloudy 60º 6% NNW 6 mph 80%
10pm Cloudy 59º 6% N 6 mph 84%
11pm Cloudy 58º 14% NNE 9 mph 86%
Tue
Oct 13 		Light Rain
View Hourly 		58º / 56º 73% ESE 12 mph 88%
12am Cloudy 57º 17% NE 11 mph 86%
1am Few Showers 55º 33% NE 13 mph 89%
2am Showers 55º 36% ENE 14 mph 90%
3am Few Showers 53º 33% ENE 14 mph 88%
4am Few Showers 53º 31% ENE 14 mph 89%
5am Cloudy 52º 19% ENE 13 mph 88%
6am Cloudy 52º 22% ENE 13 mph 87%
7am Cloudy 52º 24% ENE 12 mph 87%
8am Cloudy 52º 24% ENE 12 mph 86%
9am Light Rain 53º 65% ENE 11 mph 85%
10am Showers 54º 57% E 11 mph 87%
11am Light Rain 55º 65% E 11 mph 87%
12pm Light Rain 55º 74% ESE 11 mph 87%
1pm Light Rain 55º 68% ESE 10 mph 88%
2pm Light Rain 56º 74% ESE 10 mph 88%
3pm Light Rain 56º 66% SE 10 mph 89%
4pm Light Rain 57º 68% SE 10 mph 90%
5pm Rain 57º 71% SE 9 mph 90%
6pm Light Rain 57º 73% SSE 9 mph 92%
7pm Showers 57º 56% SSE 9 mph 95%
8pm Cloudy 57º 24% SSE 8 mph 96%
9pm Showers 57º 57% SSE 8 mph 95%
10pm Showers 57º 53% S 8 mph 97%
11pm Rain 58º 68% S 9 mph 95%
Wed
Oct 14 		Mostly Cloudy
View Hourly 		67º / 50º 13% WNW 10 mph 79%
12am Showers 59º 56% SSW 9 mph 94%
1am Cloudy 59º 20% SSW 8 mph 92%
2am Cloudy 59º 19% SW 8 mph 93%
Thu
Oct 15 		Partly Cloudy 60º / 47º 6% NNW 10 mph 55%
Fri
Oct 16 		Rain 58º / 41º 91% S 13 mph 83%
Sat
Oct 17 		Partly Cloudy/Wind 49º / 35º 8% NW 22 mph 48%
Sun
Oct 18 		Mostly Sunny 54º / 42º 9% WNW 12 mph 52%

Weather Radar for Merrimack River Entrance, MA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Merrimack River Entrance, MA

Columbus Day
High : 68ºF
Variable winds 5 kt or less. Areas of fog before 10am. Seas 1 ft or less.
Monday Night
Low : 51ºF
NE wind 5 to 8 kt becoming ENE 7 to 10 kt after midnight. Winds could gust as high as 20 kt. A chance of showers, mainly after 4am. Areas of fog after 2am. Seas 1 ft or less.
Tuesday
High : 61ºF
ENE wind around 10 kt becoming SE in the afternoon. Rain, mainly after 1pm. Areas of fog before 8am. Seas 1 ft or less.
Tuesday Night
Low : 57ºF
S wind around 10 kt becoming SW after midnight. Rain, mainly before 2am. Seas 1 ft or less.
Wednesday
High : 67ºF
WNW wind 5 to 10 kt. Mostly sunny. Seas 1 ft or less.
Wednesday Night
Low : 52ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Thursday
High : 61ºF
NNW wind 5 to 10 kt. Sunny. Seas 1 ft or less.
Thursday Night
Low : 47ºF
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Friday
High : 61ºF
SSE wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. Winds could gust as high as 20 kt. Showers. Seas 1 ft or less.

NOAA Buoy Data Near Merrimack River Entrance, MA See Map

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    Wind Speed Forecast for Merrimack River Entrance, MA

    MondayTuesdayWednesday
    Wind Speed (MPH) 10645691412111099
    7am11am3pm7pm11pm3am7am11am3pm7pm11pm3am
    MPH 10645691412111099
    DIR NNENNWWNWNWNNEENEENEESESSES

    Current Weather Conditions In Merrimack River Entrance, MA

    As Of: 19 minutes ago

    • 51ºF
    • 48ºF
    • 10mph
    • 0º (NNE)
    • 10mph
    • Showers
    • 4mi
    • 29.85"
    • 96%
    • 0ºF

    The weather right now in Merrimack River Entrance, MA is Showers. The current temperature is 51°F, and the expected high and low for today, Monday, October 12, 2026, are -° high temperature and 51°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the North Northeast. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 48° Fahrenheit. Expected precipitation is 49 percent, with current humidity at 96 percent, and air pressure at 29.85 in. Visibility is 4 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:14am Mon Oct 12 2026

    ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 2 PM EDT WEDNESDAY...

    WHAT: East winds 10 to 20 kt with gusts up to 30 kt and seas
    3 to 6 ft expected.

    WHERE: Coastal Waters from Stonington, ME to Port Clyde, ME
    out 25 NM, Coastal Waters from Port Clyde, ME to Cape
    Elizabeth, ME out 25 NM and Coastal Waters from Cape
    Elizabeth, ME to Merrimack River, MA out 25 NM.

    WHEN: From 8 PM this evening to 2 PM EDT Wednesday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

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

    &&

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