Surf Forecasts:
Nahant Beach surf forecast from 9 Aug 2026:
- Most powerful swell: Monday 10 Aug, 8PM (local time) - 2.5ft (0.7m), 4s period, SSE swell with 13 kJ wave energy.
Best Forecast Surf Conditions for Nahant Beach this week:
The most powerful waves expected at Nahant Beach in the next 16 days are 0.7m 4s and forecast to arrive on Monday (Aug 10) 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 0.8m 4s period and expected on Saturday (Aug 15) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 10th Aug) | 2.5ft (0.7m) 4s |
Table - best surf conditions forecast for Nahant Beach over the next 16 days.
The Lowdown
Alright, grab a coffee and listen up. Rusty here.
To be straight with you, the first week and a half is a total write-off. From now until around the 18th of August, Nahant Beach is basically flat. We're talking ankle-sloshers at best, with combined energy readings barely hitting the mid-20s (24 at best). The water temp is sitting at a warm 69.6°, which is about normal for this time of year, but there's no swell to enjoy it in. You'll see some glassy mornings on the 12th and 17th, but there is literally nothing for a wave to stand up on. It’s a long, quiet stretch.
Now, things finally get interesting on Tuesday the 18th. The morning session is the standout of the whole outlook. A fresh pulse of swell rolls in overnight, pushing up to about 5ft from the ENE. The period is short at 6 seconds, so it'll be a bit choppy and fat, but the combined energy is a solid 147 (moderate). The real kicker? The wind is glassy, dead calm. That means clean, smooth faces, even if the waves aren't perfect. It’s surfable and looking way better than anything we've seen for over a week.
The afternoon of the 18th gets messy as the wind swings onshore from the SE, bumping the swell up to about 6ft but making it choppy. The 19th is a write-off with onshore wind. Wednesday the 22nd morning shows another small window with glassy conditions and a 3.6ft NNE swell (energy 142), but the period is short at 5 seconds, so it’ll be weak and soft.
So here it is: for the next 16 days, the only window that’s worth getting wet for is the morning of Tuesday the 18th of August. The swell direction from the ENE is right on the money for what Nahant needs, and glassy winds are a gift. It won't be epic, but after all that stillness, it'll feel like a grommet's Christmas morning.
Short Range ForecastMostly dry. Warm (max 33°C on Sun afternoon, min 21°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Warm (max 27°C on Thu afternoon, min 14°C on Fri night). Winds increasing (calm on Wed morning, fresh winds from the WNW by Fri afternoon). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 10 | SE 10 | SE 3 | SE 4 | SE 9 | SE 9 | SE 9 | SE 8 | SE 3 | SSE 4 | SSE 4 | SE 5 | SSE 7 | ESE 10 | ESE 9 | SE 9 | E 12 | E 12 | E 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 2 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 5 | 12 | 7 | 5 | 9 | 8 | 3 | 3 | 3 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-on | cross-on | off | cross-off | cross-on | cross-off | glassy | cross | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 8:33AM2.54m | 8:49PM3.12m | 9:36AM2.62m | 9:51PM3.21m | 10:36AM2.74m | 10:50PM3.28m | 11:31AM2.86m | 11:45PM3.32m | 12:23PM2.97m | 00:38AM3.30m | 1:11PM3.03m | 1:28AM3.22m | 1:57PM3.05m | 2:17AM3.09m | |||||||
Low Tide | 2:31PM0.27m | 3:23AM-0.08m | 3:33PM0.18m | 4:21AM-0.18m | 4:31PM0.06m | 5:16AM-0.27m | 5:28PM-0.04m | 6:07AM-0.31m | 6:21PM-0.11m | 6:55AM-0.30m | 7:12PM-0.13m | 7:41AM-0.23m | 8:02PM-0.10m | ||||||||
 | |  | | | | |  | | | |  |  | | | | | | | | | |
 | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 30 | 33 | 29 | 27 | 30 | 29 | 27 | 30 | 27 | 24 | 25 | 23 | 25 | 27 | 24 | 20 | 23 | 19 | 21 | 25 | 21 |
Feels °C | 29 | 31 | 27 | 27 | 30 | 28 | 27 | 31 | 24 | 23 | 22 | 22 | 25 | 25 | 19 | 15 | 17 | 14 | 15 | 20 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | — | SE 10 | SE 10 | SE 4 | SE 9 | SE 9 | SE 9 | SE 8 | E 8 | SE 8 | SE 4 | SE 5 | SSE 7 | ESE 10 | ESE 9 | SE 9 | SE 9 | SE 9 | SE 9 |
| kJ | 2 | 2 | — | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 6 | 7 | 5 | 9 | 8 | 3 | 3 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | SE 10 | SE 4 | E 8 | E 7 | E 8 | E 14 | E 11 | E 14 | E 10 | E 10 | E 13 | E 13 | — | E 12 | E 12 | E 12 |
| kJ | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | 4 | 2 | 4 | 2 | 2 | 3 | 3 | — | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | E 10 | — | — | E 8 | E 8 | SE 6 | S 6 | — | E 11 | E 14 | E 10 | E 13 | E 13 | — | E 13 | — | — | — | — |
| kJ | 2 | 2 | 2 | — | — | 1 | 1 | 1 | 1 | — | 2 | 4 | 2 | 4 | 3 | — | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 2 | — | SE 3 | SW 2 | WNW 2 | SSE 2 | N 3 | — | SE 3 | SSE 4 | SSE 4 | WNW 2 | NW 4 | W 3 | WNW 3 | WNW 4 | NW 4 | NW 3 | NNW 3 |
| kJ | — | — | 1 | — | 3 | 1 | 1 | 1 | 1 | — | 4 | 5 | 12 | 1 | 12 | 6 | 5 | 14 | 11 | 6 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 169 | 342 | 190 | 651 | 529 | 97 | 190 | 249 | 190 | 652 | 673 | 97 | 853 | 853 | 236 | 993 | 127 | 956 | 993 | 1957 | 520 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Nahant Beach Surf forecast
The above surf forecast table for Nahant Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nahant Beach can be found by selecting the local surf guide option on the grey menu. Our Nahant 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 (Nahant 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 Nahant 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.
Nahant Beach is 7 km (4 miles) from Lynn. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Lynn. Lynn has rooms for a wide range of budgets as well as car hire and transport links.
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