Surf Forecasts:
Nantasket Beach surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 11AM (local time) - 7ft (2.2m), 7s period, NNE swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 8ft (2.5m), 8s period, NE swell with 689 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 11AM (local time) - 7ft (2.2m), 7s period with NNE 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 11AM. The primary swell is predicted to be 2.2m and 7s period with a secondary swell of 0.1m and 11s. Another secondary swell of 0.1m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Nantasket Beach in the next 16 days are 2.5m 8s and forecast to arrive on Sunday (Sep 20) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Sep 14) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 20th Sep) | 7ft (2.2m) 7s |
| Best Surf | 11AM (Sun 20th Sep) | 7ft (2.2m) 7s |
| Most Powerful | 2PM (Sun 20th Sep) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about Nantasket Beach.
Right now, we’ve got a long stretch of flatness and frustration ahead. There’s nothing worth paddling out for from now until nearly the end of next week. The models are showing a big, empty gap of tiny, weak waves and poor conditions for days on end. It’s a tough run for the area, with almost no consistency to work with. But hang tight—there’s a flicker of hope on the horizon.
The first real chance of anything comes on Sunday the 20th. We’re looking at a morning push of 7ft swell from the NNE, with a period of 7 seconds. It’s not the cleanest groundswell, but the combined energy jumps up to 443 (moderate wave energy), and we’ve got a moderate offshore wind from the W. That offshore breeze is a big positive, meaning the waves should be peeling pretty clean. This is the standout session of the whole forecast. By the afternoon, the swell nudges up to 8ft from the NE with a period of 8 seconds, and energy cranks to 617 (moderate wave energy), but the wind switches to a cross-offshore from the NNW. It’s still clean, but the wave quality gets a bit more marginal. This size is pushing into expert territory—over 8ft is only for the experienced crew, so keep that in mind.
Monday the 21st sees the swell drop back to 5ft from the ENE (7 seconds, energy at 263), with a cross-shore wind from the north. It’s a step down, but there might be a few for the intermediates. By Tuesday the 22nd, we’re back to small, weak stuff around 3ft, and it’s pretty much done after that. There’s a little pulse of 3ft from the east on Friday the 25th, with a clean offshore wind from the west, but it’s very ordinary—surfable, but nothing to get excited about.
Overall, the only true standout is Sunday the 20th, especially the morning session. The rest of the two weeks is a mix of small, weak waves and long flat spells. The water temp is sitting at 66° for the first session, which is about normal for this time of year.
Stay patient, keep an eye on the sky, and don’t waste your energy on the flat days.
Rusty.
Short Range ForecastHeavy rain (total 48mm), heaviest during Sun afternoon. Warm (max 22°C on Mon afternoon, min 14°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 24°C on Wed afternoon, min 16°C on Thu afternoon). Wind will be generally light. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 10 | E 9 | E 9 | N 4 | NE 6 | NE 5 | NE 5 | ENE 5 | E 6 | E 13 | E 7 | E 7 | E 7 | E 7 | NE 4 | E 12 | E 12 | E 12 | ESE 7 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 7 | 6 | 12 | 50 | 41 | 27 | 16 | 3 | 4 | 9 | 17 | 16 | 14 | 7 | 12 | 11 | 11 | 9 | 9 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-off | cross-off | glassy | cross |
High Tide | 1:52AM2.95m | 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 | ||||||||
Low Tide | 7:39PM-0.09m | 7:55AM0.06m | 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 | |||||||
 |  |  | |  | | | |  | | | |  | | | | | |  |  | |
 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — |
 | 6:57 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:50 | — | — | 6:47 | — | — | 6:45 | — |
mm | 48 | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — | 4 |
Temp °C | 19 | 20 | 20 | 22 | 19 | 14 | 15 | 14 | 19 | 24 | 22 | 19 | 16 | 17 | 17 | 18 | 17 | 21 | 24 | 20 |
Feels °C | 20 | 21 | 16 | 17 | 14 | 11 | 13 | 11 | 17 | 23 | 21 | 19 | 16 | 19 | 16 | 17 | 16 | 21 | 24 | 19 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 4 | E 9 | ESE 8 | ESE 9 | NE 5 | NE 5 | ENE 5 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | ENE 4 | ENE 5 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 7 | 5 | 6 | 7 | 8 | 41 | 27 | 16 | 3 | 3 | 9 | 17 | 16 | 14 | 4 | 12 | 9 | 9 | 9 | 5 |
Swell 2 Height (m) Direction Period (s) | SSE 4 | SE 5 | ESE 7 | ESE 6 | — | ESE 9 | E 9 | E 9 | ENE 5 | E 9 | E 13 | E 13 | NNE 3 | E 12 | E 6 | E 7 | ESE 6 | ENE 5 | NE 4 | E 11 |
| kJ | 2 | 4 | 4 | 4 | — | 8 | 2 | 2 | 2 | 2 | 3 | 3 | 1 | 3 | 3 | 4 | 8 | 2 | 1 | 9 |
Swell 3 Height (m) Direction Period (s) | — | E 9 | — | — | — | E 15 | E 15 | E 14 | E 9 | E 13 | — | — | E 12 | — | E 12 | E 12 | E 12 | E 12 | E 11 | E 8 |
| kJ | — | 7 | — | — | — | 4 | 4 | 4 | 2 | 4 | — | — | 3 | — | 3 | 11 | 11 | 11 | 2 | 1 |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | NNW 3 | N 4 | NE 6 | — | — | — | — | — | — | — | — | NNE 3 | NE 4 | — | — | — | — | SSE 2 |
| kJ | 3 | — | 3 | 12 | 50 | — | — | — | — | — | — | — | — | 1 | 7 | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 90 | 58 | 523 | 181 | 75 | 660 | 653 | 655 | 653 | 1230 | 531 | 549 | 67 | 345 | 531 | 653 | 531 | 160 | 1237 | 58 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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.
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