Surf Forecasts:
Nantasket Beach surf forecast from 18 Aug 2026:
- Most powerful swell: Saturday 22 Aug, 11PM (local time) - 2.5ft (0.8m), 5s period, E swell with 34 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 Saturday (Aug 22) at 11PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 22nd 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 with a look at what's on offer for Nantasket Beach. I gotta be straight with you – this stretch of coastline is looking pretty flat for most of the next two weeks. It's a tough one.
Right out of the gate, we're looking at a long, dry spell. From now until the start of September, it's a whole lot of nothing. We're talking 13 days of tiny, weak, and messy conditions. The combined swell energy barely gets into double figures most days, sitting around a measly 14 to 89 (weak). There's a few mornings with glassy conditions on the 19th and the 30th of August, but with waves barely reaching 1 ft, there's just no push to get excited about.
The water temp is about average for this time of year, nothing wild.
There might be a faint glimmer for the absolute die-hards, but even then, it's a tough sell. On the morning of Monday the 31st of August and Tuesday the 1st of September, we see a bit of a bump. The swell picks up to 5-5 ft from the ENE, with the energy climbing into the moderate range (180-233). The problem is the wind. It's a cross-offshore breeze on the 31st morning keeping things clean, but the swell period is a short 6 to 7 seconds. That means weak, wind-affected lumps. It might be surfable, but it's far from good.
The 1st of September morning looks the best of a bad bunch. Glassy conditions with a 4 ft swell from the NE. A rare window of clean, manageable waves. But it's still just a short-period swell, so don't expect any gems.
For the experienced surfers who know this spot, keep an eye on that 1st of September window. For less experienced surfers, the 5+ ft swells on the 31st are right at the limit of what's comfortable. Honestly, with such a long run of poor quality, flat conditions and a short window of ordinary surf, this is one to skip. Don't bother.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 20°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 57mm), heaviest during Sun morning. Warm (max 22°C on Sat afternoon, min 17°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 | ESE 8 | ESE 9 | ESE 9 | ESE 7 | ESE 6 | ESE 6 | ESE 8 | ESE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 5 | E 5 | E 6 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 2 | 7 | 16 | 8 | 15 | 14 | 13 | 12 | 11 | 18 | 21 | 12 | 11 | 10 | 16 | 27 | 31 | 22 | 17 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-off | cross-on | on | off | on | on | on | cross-on | cross | cross-off |
High Tide | 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 | 8:40AM2.27m | 8:46PM2.66m | |||||||
Low Tide | 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 | 2:28PM0.67m | 3:22AM0.40m | ||||||
 |  | |  |  | | | |  |  |  | | | | | |  | | | |
 | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | 7:42 | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — |
mm | — | — | — | — | — | — | — | — | — | 5 | 2 | — | — | — | — | 2 | 43 | 5 | 1 |
Temp °C | 21 | 22 | 22 | 21 | 26 | 29 | 28 | 22 | 23 | 20 | 19 | 21 | 20 | 21 | 22 | 19 | 19 | 19 | 19 |
Feels °C | 22 | 23 | 23 | 22 | 27 | 29 | 28 | 22 | 22 | 22 | 20 | 22 | 21 | 22 | 21 | 20 | 19 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | ESE 4 | E 8 | E 4 | ENE 4 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 5 | E 12 | E 6 | E 6 |
| kJ | 2 | 1 | 5 | 3 | 15 | 14 | 13 | 7 | 11 | 18 | 21 | 12 | 11 | 10 | 10 | 27 | 12 | 22 | 17 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 8 | ESE 9 | ESE 7 | ESE 9 | ESE 8 | E 8 | ESE 8 | — | — | E 15 | E 14 | ESE 5 | E 13 | E 13 | E 8 | — | E 12 | E 12 |
| kJ | 2 | 7 | 16 | 4 | 7 | 7 | 1 | 12 | — | — | 4 | 4 | 5 | 3 | 3 | 5 | — | 11 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | ESE 9 | ENE 4 | — | — | — | — | E 15 | — | E 14 | NE 4 | — | — | E 13 | — | E 8 | ESE 12 |
| kJ | — | — | — | 8 | 2 | — | — | — | — | 4 | — | 4 | 3 | — | — | 3 | — | 1 | 14 |
Wind waves Height (m) Direction Period (s) | — | E 4 | — | — | — | — | — | — | NNE 2 | — | ENE 3 | ENE 4 | — | E 4 | E 5 | — | E 6 | NNE 4 | — |
| kJ | — | 6 | — | — | — | — | — | — | 1 | — | 2 | 6 | — | 6 | 16 | — | 31 | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 117 | 98 | 113 | 12 | 58 | 55 | 58 | 165 | 2511 | 58 | 383 | 558 | 58 | 481 | 549 | 372 | 26 | 67 | 18 |
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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