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Surf Forecasts:

Marconis Beach surfForecast / Massachusetts / USA

information circle12 Day Weather and Surf, issued 7 am Friday 19 Sep 2025 EDT
Forecast update in hr  min  s Forecast update imminent
Marconis Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marconis Beach sea temperature is
18.7° C
 (Which is 1.1°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Marconis Beach this week:

The surf forecast for Marconis Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 24) at 5AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.6m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marconis Beach in the next 12 days are 1.1m 9s and forecast to arrive on Wednesday (Sep 24) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Thursday (Sep 25) at 5AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 24th Sep)2.5ft (0.7m) 9s
Best Surf 5AM (Wed 24th Sep)2.5ft (0.7m) 9s
Most Powerful 5PM (Wed 24th Sep)3.5ft (1.1m) 9s

Table - best surf conditions forecast for Marconis Beach over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 20°C on Fri morning, min 13°C on Sat afternoon). Mainly fresh winds.

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Tue night. Warm (max 22°C on Tue afternoon, min 16°C on Mon morning). Winds increasing (light winds from the ESE on Mon morning, fresh winds from the ENE by Wed night).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
ESE
0.3
ESE
0.3
ESE
0.9
NE
0.7
NE
0.4
ENE
0.6
E
0.7
ESE
0.3
ESE
0.4
ESE
0.4
ESE
0.6
ESE
0.6
ESE
0.6
ESE
0.7
SE
0.6
E
1.1
NE
1.4
NE
1.2
NE
0.9
ENE
0.7
ENE
Period(s) (?)667555131211111110101110996667
Wave
Graph
(?)Metric surfscale
Energy kJ (?)148104225912515224403975779596631881351026548
Wind
(km/h)
20
NNW
10
ESE
30
NE
25
NE
15
ENE
15
ESE
20
ESE
20
ESE
15
SE
10
ESE
15
SE
20
SW
20
SW
30
SW
30
SW
15
NNE
25
NE
30
NE
40
ENE
35
NE
20
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
on		cross-
on		cross-
on		cross-
on		ononcross-
on		cross-
on		oncross-
on		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
10:32AM
3.01
10:46PM
3.29
11:17AM
3.11
11:32PM
3.30
11:58AM
3.19
12:14AM
3.28
12:34PM
3.23
12:54AM
3.22
1:10PM
3.25
1:33AM
3.14
1:45PM
3.23
2:12AM
3.03
2:22PM
3.18
2:53AM
2.91
Low Tide
/ height (m)
4:43PM
0.26
5:18AM
0.06
5:32PM
0.16
5:59AM
0.05
6:16PM
0.10
6:38AM
0.08
6:57PM
0.06
7:14AM
0.14
7:37PM
0.06
7:51AM
0.23
8:16PM
0.10
8:29AM
0.33
8:57PM
0.18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Sunrise6:22--6:24--6:24--6:26--6:26--6:28--6:28--
Sunset-6:43--6:40--6:38--6:37--6:36--6:34--6:31-
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
mod rain
cloud
cloud
cloud
cloud
part cloud
part cloud
Rain (mm)
--------------10------
Temp. °C201920151414151516171717202220191716161616
Feels °C (?)1717188910101114171616182017201512101011
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Massachusetts

  1. weather stationWind Update The wind is still cross-off at Marconis Beach (light winds from the NW at Chatham Airport 25 km from Marconis Beach). 0.5m 7s swell from the ESE to make surfable waves.

    2 hours 27 minutes ago Marconis Beach
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25 km away, 2 h 27 min ago

15 km/h
NW
0.0
18.7
Air / Water (°C)
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marconis Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Marconis Beach at:
surf-forecast.com

Information about the Marconis Beach Surf forecast

The above surf forecast table for Marconis Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Marconis Beach can be found by selecting the local surf guide option on the grey menu. Our Marconis Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Marconis Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Marconis Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Marconis Beach is 18 km (11 miles) from Brewster. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Brewster. Brewster has rooms for a wide range of budgets as well as car hire and transport links.

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