Surf Forecasts:
Nantasket Beach surf forecast from 19 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 5AM (local time) - 2.5ft (0.8m), 5s period, E swell with 36 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 0.8m 5s and forecast to arrive on Sunday (Aug 23) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Thursday (Aug 20) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 23rd Aug) | 2.5ft (0.8m) 5s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta level with you right off the bat: the next 16 days at Nantasket Beach are lookin’ flat as a pancake. There’s zero rideable surf on the menu from now until the end of the forecast period on the 3rd of September. That’s a solid two-week stretch with nothin’ to get excited about.
Let’s break it down. The first few days – Wednesday the 19th through to Monday the 24th – we’re seein’ tiny dribbles of swell, mostly around 0.6 ft to 1 ft, with a weak combined energy that never cracks 50 (topping out at just 48). The wind’s all over the place, sometimes clean-ish, but the swell just doesn’t have the grunt to push anything rideable. It’s basically a lake out there for a paddle.
Tuesday the 25th has a moment where the wind goes dead calm – glassy as a mirror – but the swell is only 0.6 ft with a long period of 11 seconds. That long-period groundswell energy (22) is just spread too thin to wrap into Nantasket. It’s a pretty sight, but not a surfin’ one.
From there it gets worse. By Thursday the 27th and into the end of the month, the wind cranks up to 15 to 18 mph from the northeast, tearin’ the ocean up and keepin’ any tiny bump of swell just completely chopped out. Even the longer-period pulses that sneak in around the 1st of September (periods up to 14-17 seconds) are only pushin’ 0.3 ft to 0.6 ft of height – barely a ripple.
Honestly, nothin’ here stands out as a go. If you’re itchin’ for a paddle, Tuesday morning the 25th will be the most peaceful paddle of your life, but you won’t catch a wave. This stretch is a total write-off for surf. If the wind was stronger and the swell a bit bigger, you might be lookin’ at kite conditions, but right now it’s just a blank run for a beach that can sometimes deliver. Forecasts change, but for now, take the wetsuit off.
Stay salty, Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 31°C on Wed afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Mon afternoon, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | ESE 7 | ESE 6 | SE 6 | SE 6 | ESE 8 | ESE 7 | ESE 8 | ESE 8 | NE 5 | ESE 8 | E 8 | E 7 | E 5 | E 5 | ENE 5 | E 12 | ESE 6 | E 11 | E 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 9 | 8 | 10 | 9 | 11 | 11 | 19 | 13 | 13 | 20 | 18 | 10 | 25 | 32 | 17 | 11 | 13 | 10 | 9 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-off | on | cross-on | on | cross-on | cross-on | cross-off | cross-off | off | off |
High Tide | 4:47AM2.55m | 5:05PM2.78m | 5:44AM2.40m | 5:58PM2.69m | 6:41AM2.30m | 6:52PM2.64m | 7:41AM2.26m | 7:49PM2.62m | 8:40AM2.27m | 8:46PM2.66m | 9:34AM2.33m | 9:38PM2.73m | |||||||
Low Tide | 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 | 2:28PM0.67m | 3:22AM0.40m | 3:21PM0.60m | 4:08AM0.32m | ||||||
 |  | | |  |  |  | | | |  | | | | | | | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:39 | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:30 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 26 | 31 | 27 | 26 | 22 | 21 | 22 | 23 | 21 | 21 | 21 | 17 | 18 | 21 | 21 | 24 | 27 | 25 |
Feels °C | 23 | 27 | 30 | 26 | 26 | 22 | 19 | 19 | 19 | 18 | 18 | 18 | 16 | 18 | 21 | 22 | 23 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 6 | SE 6 | SE 6 | ESE 8 | ESE 7 | ESE 8 | ESE 8 | NE 5 | ESE 8 | E 8 | E 7 | E 7 | E 5 | ENE 5 | E 4 | ESE 6 | E 7 | ESE 6 |
| kJ | 9 | 8 | 10 | 9 | 11 | 11 | 19 | 13 | 10 | 20 | 18 | 10 | 10 | 32 | 17 | 9 | 13 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 8 | E 8 | E 8 | — | E 9 | E 9 | E 15 | ESE 8 | ENE 4 | E 13 | E 13 | E 13 | E 7 | E 7 | E 12 | E 12 | ESE 6 | E 11 |
| kJ | 2 | 7 | 6 | 5 | — | 2 | 2 | 4 | 13 | 3 | 3 | 3 | 3 | 4 | 8 | 11 | 11 | 4 | 9 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | — | — | — | — | — | — | — | E 14 | E 14 | — | — | — | E 12 | E 12 | — | NE 4 | E 11 | S 3 |
| kJ | 8 | — | — | — | — | — | — | — | 4 | 4 | — | — | — | 12 | 11 | — | 1 | 10 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 3 | — | — | — | NE 4 | — | — | ESE 3 | ESE 4 | E 5 | — | — | — | — | WSW 2 | — |
| kJ | — | — | — | 1 | — | — | — | 8 | — | — | 1 | 2 | 25 | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 55 | 58 | 55 | 64 | 58 | 58 | 58 | 67 | 893 | 58 | 660 | 549 | 560 | 93 | 160 | 55 | 55 | 64 | 64 |
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