Surf Forecasts:
Nantasket Beach surf forecast from 18 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 8PM (local time) - 2.5ft (0.7m), 10s period, SE swell with 102 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 0.7m 10s and forecast to arrive on Wednesday (Jul 22) at 8PM. 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 Sunday (Jul 19) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Wed 22nd Jul) | 2.5ft (0.7m) 10s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer down at Nantasket Beach. I’m gonna be straight with you – the next week and a half is pretty grim. We’re staring down a long, dry spell with barely a ripple. The first decent bump doesn’t show its face until Monday the 27th of July, and even then, it’s nothing to write home about at first.
For the first eight days, from Saturday the 18th through to Sunday the 26th, it’s a write-off. We’re talking tiny little slop, mostly under 2ft, with weak, short-period windswell. The combined energy is in the single or low double digits (6 to 86), which is just pathetic. The wind is a mixed bag of cross-off and cross, but it doesn’t matter because there’s no swell to work with. A couple of glassy mornings on Monday the 20th and Saturday the 25th are the only tease, but with wave heights of 0.3ft to 1ft, you’re just floating. Save the petrol.
Finally, on Monday the 27th of July, things start to stir. A NE swell pushes in, hitting about 5ft early morning with a short period of 6 seconds. The combined energy jumps to 163 (moderate), and the wind goes glassy from the NNW. The waves are there, but they’re a bit weak and messy. It’s surfable, but it’s ordinary. This is better for the experienced crew who don’t mind a lacklustre session.
Now, Tuesday the 28th of July is the one standout in this whole outlook. The morning is your best bet. We’re looking at a NE swell of 6ft, still a short period of 7 seconds, but the combined energy rockets up to 485 (strong wave energy). The wind is light and offshore from the SW, keeping it clean. This is solid, punchy beach break stuff. It’s got a bit of grunt, so it’s not for the groms, but for any intermediate or above, this is the session to target. The crowds are described as “sometimes,” so you might have some company, but it’s worth it. The afternoon brings a risk of thunderstorms and a drop in quality, so get on it early.
The swell drops off fast after that. Wednesday the 29th is back to small, weak leftovers, and the rest of the run into August is a repeat of the flat spell. The water temp is about 67°F, which is bang on average for the time of year, so no need for a thick wetsuit.
If you’re a paddle surfer, your window is Tuesday morning, the 28th of July. That’s the one. For the rest, it’s a waiting game.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat afternoon. Warm (max 29°C on Sat afternoon, min 18°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue night. Warm (max 27°C on Wed morning, min 17°C on Wed night). Winds decreasing (fresh winds from the S on Tue night, light winds from the W by Thu afternoon). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 14 | S 4 | SE 6 | E 13 | N 4 | N 4 | E 12 | E 12 | E 12 | E 12 | SE 4 | ESE 5 | E 7 | SE 9 | ESE 10 | ESE 10 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 9 | 13 | 4 | 4 | 1 | 3 | 3 | 3 | 3 | 13 | 46 | 15 | 86 | 40 | 39 | 23 | 21 | 10 | 11 | 20 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-off | cross | cross | cross-on | cross-off | cross-off | off | off | off | cross | cross-on | cross-on | cross-off |
High Tide | 3:14PM3.01m | 3:31AM3.02m | 4:05PM2.96m | 4:26AM2.83m | 4:57PM2.90m | 5:24AM2.64m | 5:49PM2.83m | 6:22AM2.49m | 6:41PM2.78m | 7:20AM2.38m | 7:33PM2.73m | 8:21AM2.33m | 8:28PM2.72m | ||||||||
Low Tide | 8:57AM-0.20m | 9:18PM0.06m | 9:47AM-0.05m | 10:14PM0.15m | 10:38AM0.12m | 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 | |||||||
 |  |  |  | |  | | | | |  |  |  | |  | | | | | | | |
 | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — |
mm | — | 3 | 2 | — | — | — | — | — | — | — | — | 7 | 1 | — | 2 | — | — | — | — | — | — |
Temp °C | 26 | 29 | 22 | 23 | 27 | 25 | 25 | 26 | 22 | 23 | 25 | 22 | 27 | 27 | 24 | 22 | 26 | 24 | 19 | 20 | 19 |
Feels °C | 24 | 25 | 21 | 18 | 23 | 22 | 23 | 22 | 18 | 21 | 22 | 23 | 26 | 26 | 25 | 19 | 24 | 22 | 16 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 13 | SE 6 | ESE 6 | SE 6 | N 4 | — | E 9 | SE 4 | E 12 | E 11 | E 11 | SE 6 | SE 9 | ESE 10 | ESE 10 | — | ESE 7 | ESE 7 | ESE 8 | ESE 8 |
| kJ | 4 | 3 | 13 | 4 | 1 | 1 | — | 2 | 2 | 3 | 2 | 2 | 12 | 86 | 40 | 39 | — | 21 | 10 | 11 | 20 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 13 | E 13 | E 12 | SE 6 | E 12 | E 12 | E 12 | E 8 | E 8 | — | E 7 | — | SE 6 | SE 8 | — | — | — | NNE 3 | — |
| kJ | 1 | 1 | 3 | 3 | 3 | 1 | 3 | 3 | 3 | 1 | 1 | — | 15 | — | 10 | 10 | — | — | — | 1 | — |
Swell 3 Height (m) Direction Period (s) | E 8 | — | — | — | E 8 | E 8 | SE 6 | E 12 | E 8 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | — | 1 | 1 | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 4 | SW 3 | NNW 3 | N 4 | — | — | ESE 2 | — | SE 4 | SE 4 | ESE 5 | SSW 3 | SSW 2 | — | — | ESE 8 | — | ENE 2 | — | — |
| kJ | — | 9 | 1 | 3 | 4 | — | — | 1 | — | 3 | 13 | 46 | 1 | 1 | — | — | 23 | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 961 | 478 | 467 | 67 | 91 | 85 | 113 | 131 | 69 | 1630 | 1230 | 587 | 332 | 131 | 7 | 12 | 12 | 67 | 91 | 128 | 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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