Surf Forecasts:
Nantasket Beach surf forecast from 11 Aug 2026:
- Most powerful swell: Monday 17 Aug, 5AM (local time) - 2.5ft (0.7m), 5s period, SSE swell with 21 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 Monday (Aug 17) at 5AM. 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 Monday (Aug 17) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 17th Aug) | 2.5ft (0.7m) 5s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, grab a coffee, because I’ve been staring at the charts for Nantasket Beach, and honestly, it’s a tough one. We’re looking at a full 16 days, and I’ve got to be straight with you – the swell is almost non-existent for the entire run. The water temp is sitting at a pretty normal 70°F for this time of year, so that’s not the issue, but the wave energy is just a whisper.
Right from the get-go, Tuesday August 11th, we’re looking at a flat 0.3ft of swell from the east with a period of 9 seconds. The combined energy is a measly 3, so that’s about as weak as it gets. The wind is offshore from the west at 9 mph, which would make it clean, but it’s on a flat lake. There’s nothing to surf. This flat spell just drags on. A few days, like Thursday morning August 13th, go glassy with a 0.3ft wave, but it’s still just a ripple. We get a tiny bump on Saturday August 15th with a 2ft swell from the northeast, but the period is a dismal 5 seconds, and it’s cross-onshore, making it choppy. The energy is still weak at 22. Useless.
The pattern stays the same. We get a few more little pulses, like on Monday August 17th with a 2ft swell from the southeast, period 6 seconds, but the wind is clean and cross-offshore. The energy is still only 18. It’s just not enough to get excited about. The same story repeats through the rest of the week and into the next. There’s no standout day, no moment where the swell and wind align. The entire 16-day window is a write-off for surf. The only thing that might get a look-in is the kite gear if the wind is howling, because the wave quality is just not there for paddling.
So, I’m calling it. Nantasket is flat. There are no good surf options in this 16-day window. Sometimes the forecast just gives you a blank, and this is one of those times. Keep your eyes peeled, because it can change, but for now, find something else to do.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Tue afternoon, min 20°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 27°C on Sun afternoon, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 9 | E 15 | E 9 | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | E 9 | NE 5 | NE 5 | NE 4 | E 9 | E 9 | SSE 3 | SE 6 | ESE 8 | N 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 2 | 4 | 1 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 17 | 14 | 3 | 2 | 2 | 2 | 18 | 6 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-on | cross-on | off | glassy | cross-on | off | cross-off | on | cross-off | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross |
High Tide | 10:34AM2.78m | 10:48PM3.30m | 11:28AM2.90m | 11:43PM3.33m | 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 | |||||||
Low Tide | 4:29PM0.08m | 5:15AM-0.25m | 5:25PM-0.02m | 6:07AM-0.30m | 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 | ||||||||
 |  |  | | | | |  | | | |  | | | | | |  | |  | | |
 | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — |
 | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 2 | — |
Temp °C | 28 | 31 | 28 | 24 | 26 | 24 | 26 | 26 | 26 | 23 | 25 | 23 | 20 | 22 | 21 | 24 | 27 | 22 | 26 | 26 | 24 |
Feels °C | 26 | 29 | 27 | 22 | 24 | 23 | 26 | 26 | 26 | 19 | 23 | 23 | 17 | 19 | 19 | 21 | 23 | 19 | 28 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 8 | E 8 | E 8 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | NE 5 | NE 4 | NE 4 | NE 4 | E 9 | SE 6 | ESE 5 | ESE 5 |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 14 | 3 | 1 | 1 | 1 | 18 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | — | E 11 | E 14 | E 13 | SE 5 | E 13 | — | — | E 12 | E 9 | E 9 | E 9 | E 9 | — | — | ESE 8 | ESE 9 |
| kJ | 2 | 2 | 2 | 1 | — | 2 | 4 | 3 | 1 | 3 | — | — | 3 | 2 | 2 | 2 | 2 | — | — | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | S 6 | — | — | E 15 | E 9 | E 14 | E 7 | E 7 | E 13 | — | E 13 | — | — | E 12 | — | — | — | — | — | — | — |
| kJ | 1 | — | — | 4 | 1 | 4 | 1 | 1 | 3 | — | 3 | — | — | 3 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | — | — | — | — | — | — | — | — | NE 5 | — | — | — | — | SSE 3 | WSW 3 | — | N 4 |
| kJ | — | — | — | 1 | — | — | — | — | — | — | — | — | 17 | — | — | — | — | 2 | 1 | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3546 | 2511 | 653 | 2519 | 3546 | 523 | 100 | 410 | 181 | 523 | 523 | 523 | 653 | 662 | 655 | 1240 | 2735 | 64 | 55 | 67 | 67 |
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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