Surf Forecasts:
Nantasket Beach surf forecast from 13 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 8AM (local time) - 2.5ft (0.7m), 5s period, NNE swell with 23 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 5s and forecast to arrive on Saturday (Aug 15) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Monday (Aug 17) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 15th Aug) | 2.5ft (0.7m) 5s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be straight with you – this Nantasket Beach outlook is a tough one. We're looking at a long stretch of minimal waves ahead.
We've got a 16-day window that starts off with a whole lot of nothing. From Thursday, August 13th, all the way through Wednesday, August 19th, the surf is basically flat. We're talking wave heights of 0.3ft to 1ft with almost no energy in the water. The wind is messy or cross-off shore, but there's just no swell to work with. This is a blank run we have to sit through.
Thursday morning, August 21st, sees a slight pulse of life. Swell bumps up to 2ft from the NE. The wind is light from the SE, so it'll be a little bumpy on the surface. It's not what you'd call good, but it's the first real chance to get wet and mess around on a longboard. Friday afternoon is a write-off with stronger winds.
The standouts – and I use the term loosely – appear on Saturday morning, August 23rd. We get a clean, cross-offshore wind from the NNW at 12 mph and a consistent-looking 0.7ft easterly swell. The water temperature is about 70°, which is pretty much normal for this time of year. The best on offer is actually Nantasket Beach, and that's because it's literally the only option. On Sunday morning, August 24th, with a light NW wind, it'll be glassy clean, but still ankle-high at best. Crowds are "sometimes" a problem here, and on a tiny clean day like that, the lineup will feel packed.
Forget about the end of the window. Thursday, August 27th, sees the swell pick up to 4ft from the ENE. But the period is a short and choppy 6 seconds, the wind is onshore from the ENE, and the quality will be poor – junk, really. Wait... that's the biggest surf of the whole forecast? Honestly, it looks more interesting for kite surfing than paddle surfing with that onshore wind and short-period chop.
So, in short: we are in a flat spell. It tends not to stay this poor for long around here, but this forecast gives us nothing to get excited about. The best you'll do is a tiny, clean wave on the 24th. Keep an eye on the forecasts.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Thu morning. Warm (max 27°C on Thu afternoon, min 17°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sun night. Warm (max 24°C on Sun morning, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 | E 13 | E 13 | E 13 | E 13 | N 4 | NNE 5 | NE 4 | E 9 | E 9 | SSE 3 | SSE 5 | SE 8 | SE 8 | ESE 5 | ESE 5 | E 13 | E 12 | ESE 11 | SSE 4 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 3 | 3 | 3 | 3 | 9 | 9 | 5 | 2 | 2 | 4 | 18 | 9 | 3 | 3 | 3 | 3 | 3 | 11 | 10 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | off | cross-off | cross-off | cross-off | cross-on | on | cross-off | cross-off | cross-off | cross | cross-off | on | glassy | cross-on | on | cross | glassy | cross | off |
High Tide | 12:20PM3.00m | 00:36AM3.31m | 1:10PM3.07m | 1:27AM3.23m | 1:57PM3.08m | 2:16AM3.09m | 2:42PM3.06m | 3:04AM2.92m | 3:27PM2.98m | 3:54AM2.73m | 4:15PM2.89m | 4:47AM2.55m | 5:05PM2.78m | ||||||||
Low Tide | 6:20PM-0.08m | 6:56AM-0.29m | 7:12PM-0.10m | 7:43AM-0.22m | 8:03PM-0.07m | 8:28AM-0.10m | 8:52PM0.01m | 9:12AM0.06m | 9:42PM0.11m | 9:59AM0.24m | 10:35PM0.22m | 10:48AM0.41m | 11:31PM0.33m | ||||||||
 |  |  |  | |  | | | | | |  | |  | | | | | | | | |
 | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — |
mm | 10 | — | — | — | — | — | — | — | — | — | — | 14 | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 27 | 24 | 24 | 27 | 24 | 20 | 22 | 22 | 24 | 24 | 19 | 23 | 24 | 21 | 21 | 22 | 20 | 24 | 29 | 27 |
Feels °C | 23 | 28 | 24 | 21 | 23 | 21 | 17 | 20 | 19 | 22 | 20 | 18 | 23 | 25 | 22 | 20 | 22 | 19 | 27 | 30 | 26 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | N 4 | E 9 | NNE 5 | NE 4 | NE 4 | E 9 | E 9 | E 9 | SE 8 | SE 5 | ESE 5 | NNE 4 | NE 4 | — | SE 6 | ESE 10 | ESE 9 |
| kJ | 2 | 2 | 2 | 2 | 1 | 2 | 9 | 5 | 1 | 2 | 2 | 2 | 9 | 1 | 2 | 1 | 2 | — | 1 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | E 14 | — | — | E 13 | E 10 | — | E 9 | E 9 | E 9 | — | E 11 | — | — | N 3 | SE 8 | ESE 5 | E 8 | SE 6 | ESE 11 | — | — |
| kJ | 4 | — | — | 3 | 2 | — | 2 | 2 | 2 | — | 2 | — | — | 1 | 3 | 3 | 1 | 1 | 11 | — | — |
Swell 3 Height (m) Direction Period (s) | E 7 | E 13 | E 13 | E 10 | E 13 | E 9 | E 12 | — | — | — | — | — | — | SE 8 | — | SE 8 | E 13 | E 12 | — | — | — |
| kJ | 1 | 3 | 3 | 2 | 3 | 2 | 3 | — | — | — | — | — | — | 3 | — | 3 | 3 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | N 4 | — | N 4 | — | — | — | — | SSE 3 | SSE 5 | NNW 2 | — | — | — | ESE 6 | — | — | SSE 4 | S 3 |
| kJ | — | — | — | 2 | — | 9 | — | — | — | — | 4 | 18 | 1 | — | — | — | 3 | — | — | 10 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2519 | 181 | 2508 | 950 | 3546 | 655 | 987 | 534 | 1828 | 1679 | 2511 | 336 | 67 | 102 | 108 | 117 | 210 | 108 | 160 | 466 | 55 |
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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