Surf Forecasts:
Nantasket Beach surf forecast from 7 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 8PM (local time) - 1.5ft (0.4m), 4s period, SE swell with 5 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 0.4m 4s and forecast to arrive on Thursday (Aug 13) 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 0.4m 3s period and expected on Saturday (Aug 08) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Thu 13th Aug) | 1.5ft (0.4m) 4s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, let’s talk about Nantasket Beach in feet and miles per hour.
First off, I’ve gotta be honest with you: the next couple of weeks are looking pretty flat and weak. The first ten days are full of tiny, ankle-biters with poor surf conditions. You’ll be looking at a lot of flat, wind-chopped nothing.
The water temp is about 67°, which is a couple of degrees colder than normal for this time of year. Not a huge deal, but you’ll notice it.
Things start to pick up a little on Wednesday, August 19th. The morning brings a 2ft wave from the ESE with a clean offshore breeze. It’s surfable, but the combined energy is weak (75). Nothing to write home about.
Thursday, August 20th sees the swell build, but the wind ruins it. The morning is 3ft from the E with a moderate cross-onshore, making it choppy. By the afternoon, the swell hits 6ft from the E, period short at 7 seconds, and the energy is moderate (250). The wind is still messy—this is a kite day, not a paddle day.
The one true standout is Friday, August 21st, early morning. The swell is 4ft from the E, period at 8 seconds, and the wind is glassy—dead calm, perfect conditions. The combined energy is strong (295). That’s the best we’ve got: clean, chest-high waves with some punch. The sea breeze ruins the afternoon, so get out there early or don’t bother.
Saturday, August 22nd, the swell drops to 4ft from the ENE, with a cross-off breeze that gets stronger through the day. It’s surfable, but nothing special.
Bottom line: The first two weeks are mostly flat and poor. The only real highlight is the morning of Friday, August 21st. If you can make it, you’ll get some clean, glassy waves at Nantasket Beach. Otherwise, it’s a lot of waiting.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri night. Warm (max 33°C on Sun afternoon, min 22°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 31°C on Mon afternoon, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 | E 8 | SE 8 | E 9 | E 8 | E 8 | E 9 | SE 9 | E 9 | E 10 | E 10 | E 9 | E 9 | E 9 | NE 3 | SE 8 | E 14 | E 14 | E 14 | SE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 3 | 2 | 2 | 1 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | 4 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | glassy | on | cross-off | off | off | cross-off | cross-on | cross-off | cross-off | off | cross-off | off | off | off | glassy | cross | cross-on | glassy |
High Tide | 6:40PM3.05m | 7:23AM2.52m | 7:41PM3.08m | 8:30AM2.55m | 8:47PM3.14m | 9:35AM2.65m | 9:50PM3.23m | 10:34AM2.78m | 10:48PM3.30m | 11:28AM2.90m | 11:43PM3.33m | 12:20PM3.00m | 00:36AM3.31m | ||||||||
Low Tide | 12:20PM0.28m | 1:11AM0.09m | 1:20PM0.30m | 2:17AM0.03m | 2:25PM0.27m | 3:21AM-0.05m | 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 | ||||||||
 |  |  |  | | | | |  | | |  | | | | | | |  | | | |
 | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — |
 | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — |
mm | — | — | 4 | 2 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 29 | 31 | 28 | 25 | 29 | 23 | 29 | 33 | 29 | 27 | 31 | 28 | 28 | 31 | 29 | 26 | 31 | 26 | 18 | 20 | 18 |
Feels °C | 32 | 33 | 31 | 28 | 31 | 27 | 30 | 33 | 27 | 28 | 30 | 27 | 28 | 30 | 29 | 26 | 28 | 25 | 18 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | E 8 | SE 8 | E 9 | E 8 | E 8 | E 9 | E 8 | E 8 | E 8 | SSE 4 | E 8 | E 8 | E 7 | NE 3 | — | E 7 | E 7 | E 7 | SE 4 |
| kJ | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | — | 1 | 1 | 1 | 4 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | SE 8 | E 8 | SE 8 | — | SE 7 | SE 7 | SE 9 | E 9 | E 10 | E 8 | SE 5 | E 9 | E 9 | E 7 | E 7 | E 8 | E 10 | E 10 | E 10 |
| kJ | 2 | 1 | 3 | 1 | 2 | — | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 9 | SE 7 | — | — | E 10 | E 9 | S 6 | — | E 8 | SE 8 | E 14 | E 14 | E 14 | E 7 |
| kJ | — | — | — | — | — | — | — | 2 | 2 | — | — | 2 | 2 | 1 | — | 1 | 3 | 4 | 4 | 4 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 3 | — | — | WNW 2 | — | — | SSE 3 | — | — | — | — | — | — | — | — | SE 3 | — |
| kJ | — | — | — | — | 1 | — | — | 1 | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 1120 | 228 | 160 | 346 | 110 | 113 | 336 | 113 | 660 | 531 | 108 | 160 | 961 | 181 | 181 | 2691 | 531 | 181 | 165 | 213 |
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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