Surf Forecasts:
Nantasket Beach surf forecast from 8 Aug 2026:
- Most powerful swell: Friday 14 Aug, 8AM (local time) - 1.5ft (0.5m), 4s period, NNE swell with 10 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 0.5m 4s and forecast to arrive on Friday (Aug 14) at 8AM. 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 Tuesday (Aug 11) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Fri 14th Aug) | 1.5ft (0.5m) 4s |
Table - best surf conditions forecast for Nantasket Beach over the next 16 days.
The Lowdown
Alright, grab your wetsuit, Rusty here. The outlook for Nantasket Beach over the next 16 days is a quiet one. We’re looking at a long stretch of tiny, weak surf with a real gap of almost nothing for over a week.
Saturday, August 8th – nothing. A 0.1ft southeasterly slop with only 3 combined energy units. The water temp is about average for this time of year, nothing special. Sunday and Monday are the same story – flat and messy.
Through the middle of the week, from Tuesday, August 12th to Thursday, August 14th, we get a few glassy moments, but the swell is still flat at 0.1ft to 0.4ft. The wind is clean, but there’s no power. The best you can hope for on Thursday afternoon, August 14th is a weak 0.3ft bump from the NE with a combined energy of 8. It’s not enough.
The worst day is Sunday, August 16th – rain and a 15 mph southerly wind will ruin even the tiny 0.3ft swell. Stay home.
There’s a flicker of life on Thursday, August 20th. A 0.8ft NE swell shows up, and the combined energy climbs to 70. The wind is offshore from the W at 15 mph, cleaning it up. The period is short at 5 seconds, so it’ll be a bit fat and bumpy, but it’s surfable. It’s the best of a bad bunch.
The final weekend, Saturday, August 22nd and Sunday, August 23rd, sees the energy finally tick up. On Sunday, August 23rd we get 0.6ft from the E with a 13-second period – that’s a proper long period groundswell. The combined energy hits 125 – moderate. The wind is cross-off from the WSW at 9 mph, so it’ll be clean. This is the standout of the whole outlook. Because it’s long period and a beach break, it might be a bit straight and sectiony, but it’ll have more push. Crowds are “sometimes,” so you might see a few other heads out. It’s a long way off, so keep an eye on it.
Bottom line: nearly two weeks of flat, then a small window of clean, surfable waves on the 20th, and the best shot on the 23rd. It’s been a dry spell, but it won’t stay this way forever.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Warm (max 33°C on Sun afternoon, min 22°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Thu afternoon. Warm (max 31°C on Tue afternoon, min 18°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 8 | SE 8 | E 9 | E 8 | E 8 | E 9 | E 9 | E 9 | S 3 | E 10 | E 9 | E 9 | E 9 | E 8 | E 8 | E 14 | E 14 | E 10 | E 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 2 | 3 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | cross-off | off | cross-off | cross-off | cross-on | cross-off | cross-off | off | glassy | cross | glassy | cross-on | cross-off | glassy | off | off |
High Tide | 7:23AM2.52m | 7:41PM3.08m | 8:30AM2.55m | 8:47PM3.14m | 9:35AM2.65m | 9:50PM3.23m | 10:34AM2.78m | 10:48PM3.30m | 11:28AM2.90m | 11:43PM3.33m | 12:20PM3.00m | 00:36AM3.31m | |||||||
Low Tide | 1:11AM0.09m | 1:20PM0.30m | 2:17AM0.03m | 2:25PM0.27m | 3:21AM-0.05m | 3:30PM0.19m | 4:21AM-0.16m | 4:29PM0.08m | 5:15AM-0.25m | 5:25PM-0.02m | 6:07AM-0.30m | 6:20PM-0.08m | |||||||
 |  | |  |  | |  | | | | | | | | |  | |  | | |
 | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — |
 | 7:55 | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — |
mm | 1 | — | — | 8 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | 4 | 2 |
Temp °C | 31 | 28 | 31 | 24 | 30 | 33 | 29 | 27 | 31 | 26 | 30 | 31 | 24 | 24 | 25 | 23 | 23 | 25 | 19 |
Feels °C | 32 | 30 | 33 | 26 | 30 | 32 | 26 | 27 | 30 | 27 | 30 | 31 | 27 | 24 | 24 | 23 | 22 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | E 8 | SE 8 | E 9 | SE 5 | E 8 | E 9 | E 8 | E 8 | SSE 3 | — | E 8 | E 8 | E 8 | — | E 8 | E 7 | E 7 | NNE 3 | E 10 |
| kJ | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | 2 |
Swell 2 Height (m) Direction Period (s) | — | E 8 | SE 8 | E 8 | SE 7 | SE 7 | — | E 9 | E 8 | E 8 | SE 5 | E 9 | — | E 8 | — | SE 8 | E 10 | E 10 | E 6 |
| kJ | — | 1 | 2 | 1 | 2 | 2 | — | 2 | 1 | 1 | 1 | 2 | — | 1 | — | 3 | 2 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | SE 8 | — | — | SE 7 | — | E 9 | E 9 | — | E 10 | E 10 | E 9 | — | E 9 | SE 8 | SE 8 | E 14 | E 14 | E 7 | E 13 |
| kJ | 3 | — | — | 2 | — | 2 | 2 | — | 2 | 2 | 2 | — | 2 | 3 | 3 | 4 | 4 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 3 | — | — | — | — | — | — | — | NNE 3 | — | NNE 2 |
| kJ | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | 1 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 165 | 160 | 346 | 100 | 113 | 336 | 117 | 660 | 531 | 165 | 165 | 2511 | 160 | 128 | 210 | 181 | 531 | 2674 | 655 |
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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