Surf Forecasts:
Nantasket Beach surf forecast from 16 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 8PM (local time) - 1.5ft (0.5m), 8s period, E swell with 33 kJ wave energy.
Best Forecast Surf Conditions for Nantasket Beach this week:
The most powerful waves expected at Nantasket Beach in the next 16 days are 0.5m 8s and forecast to arrive on Tuesday (Aug 18) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Monday (Aug 17) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Tue 18th Aug) | 1.5ft (0.5m) 8s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, I’m gonna level with you – the next 16 days at Nantasket Beach are going to be a tough slog. The only real pulse comes at the very end, and it’s nothing to write home about. Let’s go through it, day by day.
Starting Sunday the 16th through the end of the first week, it’s a total flat spell. The swell is 0.3ft to 1ft, all short-period windswell from the east or east-southeast. Combined energy is in the single digits and low teens, basically a ripple. Winds are all over the place, and water temp is 69°F, about normal for the season. No surf.
Then there’s a big gap from Sunday the 23rd afternoon through the morning of Tuesday the 26th. Nothing.
On Wednesday the 26th, we finally get a pulse. The morning shows 4ft from the northeast with a 5-second period and combined energy of 76 (weak). The afternoon is a bit better: 4ft from the northeast, still 5 seconds, and energy of 125 (moderate). Winds go offshore from the west-northwest, so it’ll be clean. But it’s a short-period windswell, junky and unshaped. Surfable, but very ordinary. Water temp is still 69°F.
Thursday the 27th has 3ft to 4ft from the east-northeast, but the period is still 6 seconds, and winds are cross or cross-on, making it choppy. Energy hits 151 on the afternoon, but it’s messy. Friday the 28th drops to 2ft, and then it’s back to tiny, onshore junk through the end of the month.
So, the only real mention is Wednesday the 26th afternoon – a clean, offshore wind with moderate energy, but it’s a short-period windswell that’s more interesting for kite surfers than paddle surfers. For everyone else, it’s a long stretch of nothing.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Warm (max 25°C on Sun afternoon, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 30°C on Wed afternoon, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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 | E 9 | SSE 4 | E 9 | E 9 | ESE 5 | ESE 5 | E 5 | E 7 | E 6 | E 6 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 3 | 2 | 2 | 8 | 7 | 14 | 22 | 11 | 11 | 5 | 17 | 16 | 15 | 9 | 8 | 21 | 19 | 11 | 11 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | glassy | cross | glassy | cross-off | off | cross | cross-off | cross-on | on | cross-on | cross-on | on | cross-off |
High Tide | 2:42PM3.06m | 3:04AM2.92m | 3:27PM2.98m | 3:54AM2.73m | 4:15PM2.89m | 4:47AM2.55m | 5:05PM2.78m | 5:44AM2.40m | 5:58PM2.69m | 6:41AM2.30m | 6:52PM2.64m | 7:41AM2.26m | 7:49PM2.62m | ||||||||
Low Tide | 8:28AM-0.10m | 8:52PM0.01m | 9:12AM0.06m | 9:42PM0.11m | 9:59AM0.24m | 10:35PM0.22m | 10:48AM0.41m | 11:31PM0.33m | 11:40AM0.55m | 00:28AM0.41m | 12:35PM0.65m | 1:27AM0.45m | 1:31PM0.69m | 2:27AM0.45m | |||||||
 |  |  |  | |  |  | |  | | | | |  | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — |
mm | — | — | — | 1 | 4 | 4 | — | — | — | — | — | — | 4 | 1 | — | — | — | — | — | — | — |
Temp °C | 22 | 25 | 22 | 20 | 20 | 20 | 20 | 21 | 19 | 24 | 30 | 27 | 19 | 24 | 23 | 20 | 20 | 19 | 19 | 20 | 20 |
Feels °C | 22 | 23 | 19 | 20 | 22 | 22 | 21 | 22 | 21 | 25 | 31 | 27 | 21 | 24 | 23 | 20 | 21 | 20 | 18 | 19 | 20 |
Swell 1 Height (m) Direction Period (s) | — | — | E 9 | SE 4 | E 9 | ESE 5 | ESE 5 | ESE 8 | E 7 | E 6 | E 6 | E 5 | E 7 | E 7 | E 7 | E 7 | E 7 | ESE 8 | ESE 8 | ESE 7 | ESE 7 |
| kJ | — | — | 1 | 1 | 2 | 8 | 7 | 13 | 22 | 11 | 11 | 5 | 17 | 16 | 15 | 9 | 8 | 21 | 19 | 11 | 11 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | — | E 9 | — | E 9 | ESE 9 | ESE 8 | E 9 | E 8 | ESE 6 | ESE 6 | NE 3 | SE 6 | — | E 9 | E 8 | ENE 3 | E 13 | E 13 | — |
| kJ | 2 | 2 | — | 2 | — | 2 | 7 | 14 | 6 | 1 | 4 | 4 | 2 | 1 | — | 6 | 6 | 1 | 3 | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ESE 9 | ESE 8 | E 8 | — | — | E 15 | E 15 | E 14 | E 14 | — | — | E 13 |
| kJ | — | — | — | — | — | — | — | — | — | 7 | 7 | 5 | — | — | 4 | 4 | 4 | 4 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | SSE 4 | — | SSE 2 | — | — | E 5 | — | — | — | — | — | — | — | NNE 3 | NE 3 | — | — | — | — |
| kJ | — | — | 3 | — | 1 | — | — | 14 | — | — | — | — | — | — | — | 2 | 3 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1240 | 3478 | 2499 | 282 | 225 | 90 | 98 | 90 | 26 | 58 | 58 | 58 | 653 | 523 | 181 | 531 | 618 | 523 | 844 | 581 | 58 |
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)
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 Nantasket 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.
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.
Nearest