Surf Forecasts:
Nantasket Beach surf forecast from 21 Jul 2026:
- Most powerful swell: Tuesday 21 Jul, 11PM (local time) - 3.5ft (1.1m), 5s period, SE swell with 67 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 1.1m 5s and forecast to arrive on Tuesday (Jul 21) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Jul 22) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Tue 21st Jul) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get honest about what’s cookin’ for Nantasket Beach over the next couple of weeks.
To be straight with you, this is a tough stretch. The whole 16-day window looks pretty bleak. From Tuesday the 21st of July all the way through to Wednesday the 5th of August, every single session is marked by poor surf conditions. That’s a solid two weeks where the ocean just isn’t playing ball. There’s no real standout, nothing to get excited about. It’s one of those blank runs that feels like it’s never gonna end, but in this area, it’s not that unusual. Forecasts can change, but right now, it’s a hard pass.
We’ve got some tiny energy on the 21st, with a weak 0.3ft easterly swell (combined energy of just 7), but it’s messy with a cross-shore wind. By Wednesday afternoon the 22nd, we get a brief window of clean conditions—offshore wind from the WNW—but the swell is still a pathetic 1ft from the ESE with a period of just 7 seconds. That’s a short-period, weak windswell with no push. You’d be floating around on a lake.
The only time things get even close to glassy is on the morning of Wednesday the 29th of July. The wind goes totally calm, glassy as a mirror, but the swell is a measly 1ft from the east, period of 6 seconds with combined energy of just 19. It’s so small it’s barely surfable, even for a longboard. Then again on the afternoon of the 30th we get flat calm conditions, but again, it’s only 0.7ft.
For the most part, the wind is either onshore, cross-shore, or just creating chop. The winds are light to moderate, but the swell is just never there. Heights rarely get above 1ft, and the combined energy stays in the low double digits, mostly under 40. There’s nothing with any grunt.
With the swell so small and the quality so poor, this is more of a quiet time for the beach than for any real surfing. The water temperature is about average for this time of year, nothing unusual there. Honestly, if you’re a surfer, don’t bother paddling out. The break setup is a beach, and with the combo of weak swell and poor wind, it’s not even interesting for the kite crowd. Just a flat spell, plain and simple.
Stay patient, and keep an eye on the charts. Things can turn around.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Tue night. Warm (max 28°C on Wed afternoon, min 16°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Fri afternoon, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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 12 | E 12 | SE 4 | ESE 6 | SE 7 | ESE 7 | ESE 10 | ESE 10 | ESE 9 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 3 | 3 | 16 | 22 | 23 | 18 | 42 | 38 | 32 | 21 | 15 | 10 | 11 | 11 | 11 | 10 | 11 | 19 | 19 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | off | off | cross-off | on | off | cross-on | cross-on | cross-off | cross-on | on | cross-off | cross-on | on | cross-off |
High Tide | 5:24AM2.64m | 5:49PM2.83m | 6:22AM2.49m | 6:41PM2.78m | 7:20AM2.38m | 7:33PM2.73m | 8:21AM2.33m | 8:28PM2.72m | 9:18AM2.32m | 9:21PM2.74m | 10:09AM2.36m | 10:09PM2.79m | |||||||
Low Tide | 11:13PM0.23m | 11:30AM0.29m | 00:11AM0.30m | 12:22PM0.44m | 1:09AM0.34m | 1:15PM0.55m | 2:08AM0.36m | 2:09PM0.62m | 3:06AM0.35m | 3:03PM0.63m | 3:57AM0.30m | 3:53PM0.59m | 4:41AM0.26m | ||||||
 |  | |  | |  | | | |  | | |  | | | | | | | |
 | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | 8:15 | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — |
mm | — | — | — | 20 | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 26 | 22 | 25 | 28 | 25 | 20 | 22 | 19 | 22 | 24 | 21 | 21 | 22 | 19 | 20 | 21 | 19 |
Feels °C | 18 | 20 | 22 | 21 | 25 | 28 | 23 | 17 | 19 | 17 | 21 | 21 | 18 | 18 | 19 | 17 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 11 | ESE 6 | SE 7 | ESE 7 | ESE 10 | ESE 10 | ESE 9 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 1 | 1 | 2 | 22 | 23 | 18 | 42 | 38 | 32 | 21 | 15 | 10 | 11 | 11 | 11 | 10 | 11 | 19 | 19 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | — | E 11 | ESE 8 | — | — | — | — | — | — | — | — | — | — | ESE 4 | — | — | — |
| kJ | 3 | 3 | — | 2 | 7 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | SE 3 | SE 4 | S 3 | SW 3 | SSW 3 | — | — | — | — | — | — | — | — | SE 3 | — | — | — | — |
| kJ | 1 | 3 | 16 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | 5 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 653 | 1230 | 1230 | 1230 | 26 | 12 | 12 | 55 | 131 | 55 | 117 | 653 | 55 | 578 | 805 | 58 | 117 | 742 | 58 |
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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