Surf Forecasts:
Nantasket Beach surf forecast from 11 Aug 2026:
- Most powerful swell: Monday 17 Aug, 2PM (local time) - 0.5ft (0.1m), 19s period, E swell with 7 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 0.1m 19s and forecast to arrive on Monday (Aug 17) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 14) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 17th Aug) | 0.5ft (0.1m) 19s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, let’s take a look at the next couple of weeks here.
Honestly, mate, it’s a flat spell. There’s really nothing pumping for the next 16 days. We’re looking at a long stretch of small, weak surf and poor conditions. For about the first week and a half, we’re talking tiny dribbles – most days showing just 0.3 to 1 foot of swell with very weak energy. The southeast to east wind is often cross-on or onshore, adding chop into the mix. It’s not a good time to be loading the board on the car.
The only spot on offer is Nantasket Beach. This place is usually consistent, but even it’s struggling. The water temp is around 71°, which is about normal for this time of year, no big anomaly.
We get a tiny bump around the 15th of August Saturday morning – a 1 foot north-northeast swell, but with a super short period of just 4 seconds, it’s weak and choppy. That’s not going to hold up.
Things do look slightly less terrible from the 18th of August Tuesday onward. We start to see a little more energy, with wave energy climbing to around 42-53, still very weak. On Thursday the 20th, we finally get a clean 1 foot east-southeast swell with a 12-second period and cross-offshore winds – that’s about the best we’ve got, but it’s tiny. There’s a brief window on the 24th of August Monday morning with flat calm, glassy conditions, but again, only a 0.7 foot east swell.
From the 21st of August, the swell sticks around 1 feet, but the wind gets messy again. The very end of the outlook, on the 25th of August Tuesday, shows a 2 foot swell – the biggest of the whole run – but it comes with onshore easterly winds and a period of 5 seconds, meaning it’ll be junky.
There are no standouts. No quality waves to get excited about. If you’re desperate, the cleanest, least-ugly moment is Thursday the 20th of August morning with that small, clean 1 foot swell, but it’s really not worth the drive. This is a classic flat spell for the area – sometimes it just happens. Forecasts can change, but as it stands, I’d give the board a rest.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Tue afternoon, min 21°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu night. Warm (max 28°C on Thu afternoon, min 17°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 10 | E 9 | E 9 | E 9 | E 15 | E 9 | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | N 4 | N 4 | E 12 | SE 9 | E 9 | E 11 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2 | 2 | 2 | 2 | 2 | 4 | 1 | 4 | 4 | 4 | 3 | 4 | 3 | 5 | 5 | 3 | 3 | 1 | 2 | 2 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | cross-off | cross-off | cross-off | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | on | off | cross-off | cross-on | cross-off |
High Tide | 9:50PM3.23m | 10:34AM2.78m | 10:48PM3.30m | 11:28AM2.90m | 11:43PM3.33m | 12:20PM3.00m | 00:36AM3.31m | 1:10PM3.07m | 1:27AM3.23m | 1:57PM3.08m | 2:16AM3.09m | 2:42PM3.06m | 3:04AM2.92m | |||||||
Low Tide | 3:30PM0.19m | 4:21AM-0.16m | 4:29PM0.08m | 5:15AM-0.25m | 5:25PM-0.02m | 6:07AM-0.30m | 6:20PM-0.08m | 6:56AM-0.29m | 7:12PM-0.10m | 7:43AM-0.22m | 8:03PM-0.07m | 8:28AM-0.10m | 8:52PM0.01m | |||||||
 |  | | | | |  | | | |  | | |  | | | | | |  | |
 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — |
 | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 28 | 31 | 27 | 25 | 26 | 25 | 25 | 28 | 25 | 22 | 25 | 23 | 21 | 23 | 22 | 23 | 25 | 23 |
Feels °C | 29 | 26 | 25 | 27 | 26 | 23 | 23 | 24 | 25 | 27 | 26 | 16 | 21 | 19 | 17 | 21 | 20 | 21 | 24 | 20 |
Swell 1 Height (m) Direction Period (s) | — | — | E 8 | E 8 | E 8 | E 8 | — | E 8 | E 10 | E 10 | SE 4 | SE 10 | E 10 | E 9 | E 9 | NNE 4 | NE 4 | — | E 9 | SE 4 |
| kJ | — | — | 1 | 1 | 1 | 1 | — | 1 | 2 | 2 | 1 | 4 | 2 | 2 | 2 | 3 | 1 | — | 2 | 1 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 8 | E 11 | E 14 | E 13 | E 10 | E 13 | E 13 | E 12 | E 12 | E 9 | SE 9 | E 9 | — | E 9 |
| kJ | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 4 | 4 | 2 | 3 | 3 | 3 | 3 | 2 | 3 | 1 | — | 2 |
Swell 3 Height (m) Direction Period (s) | E 10 | E 10 | — | — | — | E 15 | E 9 | E 14 | E 7 | E 7 | E 13 | E 13 | E 13 | — | — | E 12 | — | — | E 11 | — |
| kJ | 2 | 2 | — | — | — | 4 | 1 | 4 | 1 | 1 | 3 | 3 | 3 | — | — | 3 | — | — | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 2 | WNW 3 | — | NNE 3 | — | — | — | S 3 | — | NW 3 | NW 3 | N 4 | N 4 | — | — | — | — | SSW 2 |
| kJ | — | — | 1 | 1 | — | 1 | — | — | — | 2 | — | 2 | 2 | 5 | 5 | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 531 | 523 | 181 | 2511 | 655 | 653 | 3499 | 165 | 655 | 2683 | 67 | 890 | 3546 | 987 | 523 | 523 | 213 | 534 | 1232 | 108 |
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)
Latest 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 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