
Surf Forecasts:
Nantasket Beach surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 8PM (local time) - 5.5ft (1.7m), 7s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 20 Sep, 8PM (local time) - 5.5ft (1.7m), 7s period, ENE swell with 289 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 8PM (local time) - 5.5ft (1.7m), 7s period with ENE swell.
Best Forecast Surf Conditions for Nantasket Beach this week:
The surf forecast for Nantasket Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 8PM. The primary swell is predicted to be 1.7m and 7s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nantasket Beach in the next 16 days are 1.7m 7s and forecast to arrive on Sunday (Sep 20) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Sep 14) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 20th Sep) | 5.5ft (1.7m) 7s |
| Best Surf | 8PM (Sun 20th Sep) | 5.5ft (1.7m) 7s |
| Most Powerful | 8PM (Sun 20th Sep) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s get into it.
We’re looking at Nantasket Beach and, honestly, it’s a tough stretch ahead. For the first week and a half, there’s just nothing doing. The surf is flat or tiny, with weak, short-period slop. We’ve got a gap from now all the way through to the morning of Sunday, September 20th, where the recommendations are basically zero. Winds are messy or onshore, and the energy is pathetic – we’re talking single-digit combined energy values like 8 or 10, which is basically lake status. You’d be better off taking a nap.
Sunday, September 20th finally sees a little pulse of life. The morning brings a 3ft swell from the NNE, but it’s short-period at 5 seconds, and the wind is a cross-shore breeze. Combined energy is 60 – weak. Not worth getting excited about. The afternoon gets a bit bigger, with 5ft from the NE, period 6 seconds, and the combined energy bumps to 187 (moderate). But it’s still cross-onshore wind, so it’ll be bumpy. This is still in the “poor surf” category.
Monday, September 21st keeps the moderate energy going (172 in the morning), but with a 4ft swell from the ENE and a gentle cross-onshore, it’s not clean. The wave comment tells the story: poor surf conditions.
The real standout, if you can call it that, is the window on Thursday, September 24th. The morning is a write-off with heavy rain and a strong cross-shore wind, but the afternoon flips. We get a 5ft swell from the east, period 8 seconds, combined energy of 319 (strong). And the wind goes light, cross-off from the WNW. That’s the cleanest wind we’ve seen all forecast. The wave comment even says “expect good surf conditions” for that afternoon window. The swell direction (E) is not the optimum NE, but with that clean wind, it’s the best bet. It’s still a beach break, so with 5ft, it’s approachable for strong intermediates, but beginners might find it a handful. Crowds are possible here on a clean day, so be ready for company.
After that, it fades fast. Friday the 25th drops back to poor conditions with onshore wind, and the weekend goes straight into the toilet with rain, strong winds, and tiny swell. The combined energy plummets to 19 by Sunday the 27th, and we’ve got a 25 mph wind making a mess of things.
So, the only true standout in this 16-day stretch is the afternoon of Thursday, September 24th at Nantasket Beach. That’s your window. It’s a long way out, so keep an eye on it, but if the wind holds, it’s the only time the ocean gives us something real to work with. Otherwise, it’s a long, dry spell.
Stay patient. Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 13°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Sat night. Warm (max 22°C on Fri afternoon, min 15°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 9 | N 4 | NE 5 | NE 5 | ENE 5 | ENE 5 | E 6 | E 8 | ESE 7 | E 12 | ESE 7 | ESE 7 | ESE 7 | E 12 | E 12 | E 12 | ESE 7 | SE 4 | NNE 5 | NE 6 | ENE 8 |
Wave Graph | |||||||||||||||||||||
6 | 11 | 30 | 37 | 17 | 15 | 6 | 5 | 17 | 12 | 17 | 9 | 9 | 11 | 11 | 11 | 9 | 7 | 46 | 183 | 226 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-on | on | off | cross | cross-on | cross-on | cross-on | on | cross-off | cross | cross-on | cross-off |
High Tide | 2:08PM3.07m | 2:36AM2.80m | 2:49PM2.97m | 3:22AM2.64m | 3:33PM2.86m | 4:12AM2.49m | 4:21PM2.74m | 5:06AM2.36m | 5:15PM2.64m | 6:03AM2.28m | 6:12PM2.58m | 7:00AM2.26m | 7:09PM2.57m | ||||||||
Low Tide | 8:24PM-0.01m | 8:37AM0.21m | 9:10PM0.10m | 9:21AM0.37m | 9:58PM0.23m | 10:08AM0.52m | 10:50PM0.36m | 10:59AM0.64m | 11:47PM0.45m | 11:55AM0.70m | 00:44AM0.50m | 12:52PM0.72m | 1:42AM0.50m | ||||||||
6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | |
— | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:50 | — | — | 6:47 | — | — | 6:45 | — | — | 6:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 22 | 2 | — | — |
Temp °C | 19 | 21 | 19 | 14 | 15 | 14 | 18 | 25 | 23 | 19 | 20 | 19 | 21 | 22 | 20 | 17 | 17 | 20 | 15 | 16 | 15 |
Feels °C | 14 | 16 | 15 | 12 | 13 | 11 | 16 | 23 | 22 | 18 | 20 | 20 | 20 | 21 | 20 | 15 | 16 | 19 | 12 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | E 9 | ESE 8 | ESE 8 | NE 5 | ENE 5 | ENE 5 | E 6 | E 4 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | E 7 | ESE 7 | SE 4 | ESE 7 | E 11 | ENE 8 |
6 | 7 | 7 | 37 | 17 | 15 | 6 | 2 | 17 | 10 | 17 | 9 | 9 | 8 | 4 | 8 | 9 | 7 | 4 | 2 | 226 | |
Swell 2 Height (m) Direction Period (s) | SE 6 | ESE 6 | — | ESE 9 | E 9 | E 9 | ENE 5 | E 8 | E 13 | E 13 | E 12 | NNE 4 | NE 4 | E 12 | E 6 | E 12 | E 11 | E 7 | E 11 | E 9 | — |
2 | 4 | — | 8 | 7 | 2 | 2 | 5 | 3 | 3 | 3 | 1 | 1 | 11 | 3 | 11 | 2 | 4 | 9 | 2 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 15 | E 15 | E 14 | E 9 | — | — | E 12 | E 12 | E 12 | E 12 | E 9 | E 12 | E 8 | — | E 11 | E 8 | — | — |
— | — | — | 4 | 4 | 4 | 2 | — | — | 12 | 3 | 3 | 3 | 2 | 11 | 1 | — | 2 | 1 | — | — | |
Wind waves Height (m) Direction Period (s) | N 3 | N 4 | NE 5 | — | — | — | — | SSE 3 | SSW 3 | NNE 3 | NNE 4 | — | — | NE 4 | — | — | — | SW 2 | NNE 5 | NE 6 | — |
5 | 11 | 30 | — | — | — | — | 3 | 1 | 1 | 2 | — | — | 1 | — | — | — | 1 | 46 | 183 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 282 | 67 | 108 | 531 | 653 | 653 | 1230 | 1230 | 181 | 81 | 890 | 549 | 181 | 213 | 815 | 850 | 655 | 782 | 117 | 17 | 0 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Nantasket Beach Surf forecast
The above surf forecast table for Nantasket Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nantasket Beach can be found by selecting the local surf guide option on the grey menu. Our Nantasket 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 (Nantasket 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 Nantasket 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.
Nantasket Beach is 8 km (5 miles) from the city of Hingham. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Hingham. Hingham has rooms for a wide range of budgets as well as car hire and transport links.










