L-36.com
Top   Marine   7-Day   Tide   NWS   Buoy   Airport   Map   GEOS   Radar   TAF  

Marine Weather and Tide Forecast for Newburyport, MA

April 29, 2025 2:29 PM EDT (18:29 UTC)
Change Location 
Sunrise 5:38 AM   Sunset 7:43 PM
Moonrise 6:27 AM   Moonset 10:45 PM 
Print  Help   Reset   Save   Recall   News  Map
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
Edit   Hide   Help

NOTE: Zones were updated 3/20/2025
ANZ251 Massachusetts Bay And Ipswich Bay- 103 Pm Edt Tue Apr 29 2025

.small craft advisory in effect through Wednesday morning - .

This afternoon - SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to 3 ft. Wave detail: S 3 ft at 4 seconds and E 2 ft at 9 seconds.

Tonight - SW winds 10 to 15 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave detail: sw 4 ft at 4 seconds and E 1 foot at 10 seconds.

Wed - NW winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 4 seconds and E 1 foot at 10 seconds.

Wed night - NW winds 5 to 10 kt. Seas around 2 ft. Wave detail: nw 2 ft at 3 seconds and E 1 foot at 9 seconds.

Thu - NE winds around 5 kt, becoming se in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: nw 1 foot at 3 seconds and ne 1 foot at 7 seconds, becoming S 1 foot at 3 seconds and ne 1 foot at 7 seconds.

Thu night - S winds 10 to 15 kt. Seas around 2 ft. Wave detail: se 2 ft at 3 seconds and E 1 foot at 8 seconds.

Fri - S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers.

Fri night - S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers.

Sat and Sat night - S winds 10 to 15 kt with gusts up to 20 kt, becoming w. Seas around 2 ft. Showers likely.
seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 103 Pm Edt Tue Apr 29 2025

Synopsis for massachusetts and rhode island coastal waters - High pres moves off the mid-atlantic coast today and tonight as a cold front approaches from the northwest. This will bring gusty southwest winds later today and tonight along with very choppy seas. Winds shift to the nw by daybreak Wed behind tonight/s cold front. High pres then builds in from the west Wed into Thu. This high shifts east of the waters Fri and Sat as low pres and associated cold front approach from the west.

7 Day Forecast for Marine Location Near Newburyport, MA
   
Edit   Hide   Help   Map    ←NEW

NEW! Add second zone forecast

Tide / Current for Newburyport, Merrimack River, Massachusetts
  
Edit   Weekend Mode (on/off)   Hide   Help
Newburyport
Click for Map
Tue -- 01:00 AM EDT     10.07 feet High Tide
Tue -- 05:40 AM EDT     Sunrise
Tue -- 06:27 AM EDT     Moonrise
Tue -- 07:53 AM EDT     -1.65 feet Low Tide
Tue -- 01:36 PM EDT     8.67 feet High Tide
Tue -- 07:42 PM EDT     Sunset
Tue -- 08:04 PM EDT     -0.40 feet Low Tide
Tue -- 10:44 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Newburyport, Merrimack River, Massachusetts does not exist in database. Press Edit above and select a valid nearby location.

Newburyport, Merrimack River, Massachusetts, Tide feet
12
am
9.3
1
am
10.1
2
am
9.4
3
am
7.7
4
am
5.3
5
am
2.7
6
am
0.4
7
am
-1.2
8
am
-1.6
9
am
-0.8
10
am
1.4
11
am
4.3
12
pm
6.9
1
pm
8.4
2
pm
8.6
3
pm
7.6
4
pm
5.8
5
pm
3.7
6
pm
1.7
7
pm
0.2
8
pm
-0.4
9
pm
0.1
10
pm
1.9
11
pm
4.7

Tide / Current for Newburyport (Merrimack River), Massachusetts Current
  
Edit   Hide   Help
Newburyport (Merrimack River)
Click for Map
Tue -- 01:36 AM EDT     -0.00 knots Slack
Tue -- 04:19 AM EDT     -1.85 knots Max Ebb
Tue -- 05:40 AM EDT     Sunrise
Tue -- 06:27 AM EDT     Moonrise
Tue -- 08:01 AM EDT     0.00 knots Slack
Tue -- 11:38 AM EDT     1.86 knots Max Flood
Tue -- 02:04 PM EDT     -0.00 knots Slack
Tue -- 04:39 PM EDT     -1.62 knots Max Ebb
Tue -- 07:42 PM EDT     Sunset
Tue -- 08:13 PM EDT     0.00 knots Slack
Tue -- 10:44 PM EDT     Moonset
Tue -- 11:56 PM EDT     1.88 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Newburyport (Merrimack River), Massachusetts Current does not exist in database. Press Edit above and select a valid nearby location.

Newburyport (Merrimack River), Massachusetts Current, knots
12
am
1.7
1
am
0.8
2
am
-0.5
3
am
-1.4
4
am
-1.8
5
am
-1.8
6
am
-1.4
7
am
-1
8
am
-0
9
am
1
10
am
1.5
11
am
1.8
12
pm
1.8
1
pm
1.2
2
pm
0.1
3
pm
-0.9
4
pm
-1.5
5
pm
-1.6
6
pm
-1.3
7
pm
-0.9
8
pm
-0.2
9
pm
0.8
10
pm
1.5
11
pm
1.8

Area Discussion for Boston, MA
   Hide   Help   
NOTE: mouseover dotted underlined text for definition
FXUS61 KBOX 291524 AFDBOX

Area Forecast Discussion National Weather Service Boston/Norton MA 1124 AM EDT Tue Apr 29 2025

SYNOPSIS
Plenty of sunshine and becoming quite breezy and unseasonably warm today with highs in the upper 70s to 80+ away from the south coast
A cold front crosses the region tonight
but nothing more than brief scattered showers are possible across parts of interior southern New England as the activity rapidly weakens as it moves east. Dry weather with pleasant temperatures is on tap for Wednesday and Thursday. Next chance for showers arrives early Friday with a few rounds of showers possible Friday and another round of rain for Saturday. Temperatures trend slightly above normal. Cold front moves in late Saturday bringing cooler temperatures for Sunday.

NEAR TERM /UNTIL 6 PM THIS EVENING/
Key Messages...

* Sunshine today & becoming quite breezy with wind gusts of 25-35 mph * Highs today upper 70s to 80+ away from the south coast

Details...

Adjusted dewpoints and RH down to align better with observations and increased mixing. Otherwise, the rest of the forecast remains on track.

High pressure will continue to move east and away from the mid- Atlantic coast today
At the same time
a cold front will be dropping south into northern New England. The increasing gradient will allow for a modest southwest LLJ of 40-50+ knots to develop during the afternoon and especially by early evening. This will result in southwest wind gusts increasing to between 25 and 35 mph with perhaps a few brief gusts near 40 mph. 925T will rise to between +15C to +17C should allow for an unseasonably warm afternoon. Highs should top out in the upper 70s to 80+ away from the south with plenty of sunshine and just some thin high clouds at times. The gusty SW winds off the ocean will result in cooler high temps in the 60s to near 70 near the immediate south coast.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/
Key Messages...

* Brief scattered showers possible across interior southern new England tonight but uncertain how far east activity survives

* Otherwise...quite breezy and unseasonably mild for much of tonight ahead of the approaching cold front

* Sunny & breezy Wed with highs mainly in the middle 60s to lower 70s

Details...

Tonight...

The southwest LLJ will persist tonight ahead of the approaching cold front...so it will remain quite breezy. This cold front will be associated with showers and thunderstorms with severe weather likely across upstate NY and parts of PA
However
mid level ridging in southern New England coupled with diminishing diurnal instability will result in the activity weakening significantly as it pushes southeast towards our region. The guidance differs on how well the activity holds together with the HRRR being the most aggressive in allowing showers to impact much of the region. The other guidance is not quite sold on that with the activity weakening faster.
Overall...thinking we may see a brief round of scattered showers in parts of interior southern New England with the greatest risk in northwest MA where a brief downpour or two is possible. Activity will continue to rapidly weaken as it moves southeast with nothing more than perhaps a brief sprinkle or two probably survives onto the Boston to Providence corridor if even that. Later shifts may need to make adjustments on the POPS...especially if it appears the more aggressive HRRR starts to get support from other guidance later today.

It will remain unseasonably mild tonight with temps only dropping into the 60s this evening away from the south coast. Most locations will see temps down into the 50s by daybreak Wed as NW winds usher in somewhat cooler air behind the cold front.

Wednesday...

A very pleasant post-frontal airmass will be ushered into the region on Wed. Plenty of sunshine and a bit of a northwest breeze especially during the first part of the day. While we will see cool advection working in aloft...the mild start coupled with the strong late April sun angle will result in highs mainly in the middle 60s to the lower 70s with the coolest of those readings mainly in the high terrain.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/
Key Messages:

* Dry and seasonable temperatures for Thursday.

* Slightly above normal temperatures Friday and Saturday. Chance for showers Friday and another round of rain for Saturday.

* Dry with seasonable temperatures Sunday.

Details...

Wednesday Night through Thursday:

An upper level ridge begins to build in Wednesday night, setting up Thursday to be another dry and pleasant day. A surface high positioned to the east will support light wind patterns with light northerly flow turning southerly for Thursday afternoon.
Temperatures will be more seasonable Thursday with highs in the 60s for most spots and upper 50s/low 60s for the immediate coast, Cape, and Islands.

Friday through Sunday:

Pattern becomes more unsettled by early Friday, with ensembles indicating almost 200 percent PWAT anomalies across southern New England ahead of a slow moving upper level trough. Ensemble guidance shows a weak shortwave trough moving through Friday, followed by another wave moving through sometime Saturday. This will bring a few rounds of showers late Thursday night through Friday. Temperatures for Friday look to be above normal with guidance suggesting mid to high 70s for the interior and 60s for the Cape/Islands.

Saturday is going to be a little tricky, as timing on the next wave is still quite uncertain
However
confident there'll be another round of rainfall Saturday. Expect breezy SW to W winds during the day Saturday with gusts 20-25 mph. Temperatures lean above normal in the mid 60s to low 70s. Conditions gradually dry out Saturday night with a cold frontal passage.

Sunday trends drier with breezy northwest winds as a the main axis of the upper trough slides across southern New England. Cooler airmass behind the front will support highs around normal in the 60s. Residual moisture may support a few spot showers around during the day.

AVIATION /16Z TUESDAY THROUGH SATURDAY/
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

12z TAF Update...

Today...High Confidence.

VFR with SW wind gusts of 25 to 35 knots developing by mid afternoon.

Tonight...High Confidence.

VFR conditions dominate...but a cold front may bring weakening brief scattered showers into interior southern New England tonight. Greatest risk for a few downpours will be in northwest MA with nothing more than perhaps a sprinkle or two reaching the I-95 corridor. SW wind gusts of 20 to 30 knots with a few gusts near 35 knots possible towards the Cape. LLWS will also develop too and are included in many of the TAFS.

Wednesday...High Confidence.

VFR. NW wind gusts of 20 to 25 knots with the strongest of the winds through mid-afternoon.

KBOS TAF...High Confidence in TAF.

KBDL TAF...High Confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night through Thursday: VFR.

Thursday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SHRA.

Friday: Mainly VFR, with local IFR possible. Breezy. Chance SHRA, isolated TSRA.

Friday Night: Mainly VFR, with local MVFR possible. Breezy.
Chance SHRA.

Saturday: Mainly MVFR, with areas VFR possible. SHRA likely.

MARINE
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

Today and tonight...High Confidence.

High pressure moves off the mid-Atlantic coast as a cold front approaches from the northwest later today and tonight. The result will be a modest LLJ allowing for SW wind gusts of 25 to 35 knots to develop this afternoon and persist into tonight. We went with strong small craft advisories for most waters...but did go with Gale Warnings for Buzzards Bay/MVY sound and Cape Cod Bay where where excellent mixing nearshore should allow for 35 knot wind gusts at times. Seas will become quite choppy this afternoon and continue into tonight.

Wednesday...High Confidence.

Winds shift to the NW by daybreak Wed behind the cold front. We may have some marginal morning small craft northwest wind gusts near shore across eastern MA. While these winds should diminish some during the afternoon...lingering swell will result in the need for continuation of small craft advisories for seas across our southern waters.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Winds less than 25 kt. Seas locally approaching 5 ft.

Thursday: Winds less than 25 kt.

Thursday Night: Winds less than 25 kt. Slight chance of rain showers.

Friday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Slight chance of rain showers.

Friday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers, isolated thunderstorms.

Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft. Rain showers likely.

FIRE WEATHER
After collaboration with our surrounding WFO/s and Fire Weather Partners...an SPS remains in effect today for the potential of elevated Fire Spread. This is for the combination of minimum afternoon relative humidity values dropping to between 25 and 35 percent with SW wind gusts on the order of 25 to 35 mph later today.

As for Wednesday...winds will not be quite as strong but some NW 25+ mph wind gusts will be possible especially during the first part of the day. Minimum relative humidity values will be lower on the order of 15 to 30 percent with drier NW flow behind the cold front. We will be reaching out to the Fire Weather partners for the potential of additional statements.

TIDES/COASTAL FLOODING
Despite very quiet weather...King tides will result in the potential for splashover or very minor coastal flooding again during the early Wednesday morning high tide along parts of the eastern MA coast. The MLLW Astro tide at BOS is 12.0 feet shortly before 130 AM Wed morning. We may need another coastal flood statement for some minor splashover...but really not looking at any real impacts especially given the time of occurrence.

BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until noon EDT Wednesday for ANZ230-232- 235-237-251.
Gale Warning until 2 AM EDT Wednesday for ANZ231-233-234.
Small Craft Advisory until 8 AM EDT Wednesday for ANZ236.
Small Craft Advisory until 8 AM EDT Wednesday for ANZ250.
Small Craft Advisory until 4 PM EDT Wednesday for ANZ254>256.


Weather Reporting Stations
   Edit   Hide   Help
Stations Dist Age Wind AirWater WavesinHgDewPt
BGXN3 - Great Bay Reserve, NH 17 mi104 minSW 7 78°F 42°F
IOSN3 - Isle of Shoals, NH 17 mi89 minS 14G17 62°F 29.9831°F
SEIM1 20 mi71 min 75°F 45°F29.9737°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 26 mi145 minS 9.7G12 53°F 2 ft30.02
BHBM3 - 8443970 - Boston, MA 33 mi71 min 75°F 29.99
44013 - BOSTON 16 NM East of Boston, MA 34 mi59 minSSW 14G16 61°F 47°F30.0142°F
44030 - Buoy B0102 - Western Maine Shelf 35 mi145 minS 16G18 51°F 46°F2 ft29.98
44098 - Jeffrey's Ledge, NH (160) 37 mi63 min 46°F3 ft
WEXM1 - Wells Reserve, ME 40 mi89 minS 5.1 62°F 44°F


Wind History for No Ports station near this location
(wind in knots)    Edit   Hide   Help
toggle option: (graph/table)

No data

Airport Reports
   
Edit   Hide   Help   Click EDIT to display multiple airports. Follow links for more data.
*
AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KLWM LAWRENCE MUNI,MA 15 sm35 minSSW 12G2410 smClear79°F39°F24%29.96
KPSM PORTSMOUTH INTL AT PEASE,NH 19 sm34 minSSW 1210 smMostly Cloudy81°F39°F23%29.91

Weather Map
   Hide   Help

GEOS Local Image of Northeast  
Edit   Hide

Boston, MA,





NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE